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diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil-5.6.1.dist-info/INSTALLER b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil-5.6.1.dist-info/INSTALLER
new file mode 100644
index 00000000..a1b589e3
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil-5.6.1.dist-info/INSTALLER
@@ -0,0 +1 @@
+pip
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil-5.6.1.dist-info/LICENSE b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil-5.6.1.dist-info/LICENSE
new file mode 100644
index 00000000..e91b1359
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil-5.6.1.dist-info/LICENSE
@@ -0,0 +1,27 @@
+psutil is distributed under BSD license reproduced below.
+
+Copyright (c) 2009, Jay Loden, Dave Daeschler, Giampaolo Rodola'
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+ * Neither the name of the psutil authors nor the names of its contributors
+   may be used to endorse or promote products derived from this software without
+   specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil-5.6.1.dist-info/METADATA b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil-5.6.1.dist-info/METADATA
new file mode 100644
index 00000000..55332fbd
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil-5.6.1.dist-info/METADATA
@@ -0,0 +1,522 @@
+Metadata-Version: 2.1
+Name: psutil
+Version: 5.6.1
+Summary: Cross-platform lib for process and system monitoring in Python.
+Home-page: https://github.com/giampaolo/psutil
+Author: Giampaolo Rodola
+Author-email: g.rodola@gmail.com
+License: BSD
+Keywords: ps,top,kill,free,lsof,netstat,nice,tty,ionice,uptime,taskmgr,process,df,iotop,iostat,ifconfig,taskset,who,pidof,pmap,smem,pstree,monitoring,ulimit,prlimit,smem,performance,metrics,agent,observability
+Platform: Platform Independent
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Environment :: Console
+Classifier: Environment :: Win32 (MS Windows)
+Classifier: Intended Audience :: Developers
+Classifier: Intended Audience :: Information Technology
+Classifier: Intended Audience :: System Administrators
+Classifier: License :: OSI Approved :: BSD License
+Classifier: Operating System :: MacOS :: MacOS X
+Classifier: Operating System :: Microsoft :: Windows :: Windows NT/2000
+Classifier: Operating System :: Microsoft
+Classifier: Operating System :: OS Independent
+Classifier: Operating System :: POSIX :: BSD :: FreeBSD
+Classifier: Operating System :: POSIX :: BSD :: NetBSD
+Classifier: Operating System :: POSIX :: BSD :: OpenBSD
+Classifier: Operating System :: POSIX :: BSD
+Classifier: Operating System :: POSIX :: Linux
+Classifier: Operating System :: POSIX :: SunOS/Solaris
+Classifier: Operating System :: POSIX
+Classifier: Programming Language :: C
+Classifier: Programming Language :: Python :: 2
+Classifier: Programming Language :: Python :: 2.6
+Classifier: Programming Language :: Python :: 2.7
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.4
+Classifier: Programming Language :: Python :: 3.5
+Classifier: Programming Language :: Python :: 3.6
+Classifier: Programming Language :: Python :: 3.7
+Classifier: Programming Language :: Python :: Implementation :: CPython
+Classifier: Programming Language :: Python :: Implementation :: PyPy
+Classifier: Programming Language :: Python
+Classifier: Topic :: Software Development :: Libraries :: Python Modules
+Classifier: Topic :: Software Development :: Libraries
+Classifier: Topic :: System :: Benchmark
+Classifier: Topic :: System :: Hardware
+Classifier: Topic :: System :: Monitoring
+Classifier: Topic :: System :: Networking :: Monitoring
+Classifier: Topic :: System :: Networking
+Classifier: Topic :: System :: Operating System
+Classifier: Topic :: System :: Systems Administration
+Classifier: Topic :: Utilities
+Requires-Python: >=2.6, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*
+
+.. image:: https://pepy.tech/badge/psutil/month
+    :target: https://pepy.tech/project/psutil
+    :alt: Downloads
+
+.. image:: https://img.shields.io/travis/giampaolo/psutil/master.svg?maxAge=3600&label=Linux%20/%20macOS
+    :target: https://travis-ci.org/giampaolo/psutil
+    :alt: Linux tests (Travis)
+
+.. image:: https://img.shields.io/appveyor/ci/giampaolo/psutil/master.svg?maxAge=3600&label=Windows
+    :target: https://ci.appveyor.com/project/giampaolo/psutil
+    :alt: Windows tests (Appveyor)
+
+.. image:: https://coveralls.io/repos/github/giampaolo/psutil/badge.svg?branch=master
+    :target: https://coveralls.io/github/giampaolo/psutil?branch=master
+    :alt: Test coverage (coverall.io)
+
+.. image:: https://readthedocs.org/projects/psutil/badge/?version=latest
+    :target: http://psutil.readthedocs.io/en/latest/?badge=latest
+    :alt: Documentation Status
+
+.. image:: https://img.shields.io/pypi/v/psutil.svg?label=pypi
+    :target: https://pypi.org/project/psutil
+    :alt: Latest version
+
+.. image:: https://img.shields.io/github/stars/giampaolo/psutil.svg
+    :target: https://github.com/giampaolo/psutil/
+    :alt: Github stars
+
+.. image:: https://img.shields.io/pypi/l/psutil.svg
+    :target: https://pypi.org/project/psutil
+    :alt: License
+
+
+Quick links
+===========
+
+- `Home page <https://github.com/giampaolo/psutil>`_
+- `Install <https://github.com/giampaolo/psutil/blob/master/INSTALL.rst>`_
+- `Documentation <http://psutil.readthedocs.io>`_
+- `Download <https://pypi.org/project/psutil/#files>`_
+- `Forum <http://groups.google.com/group/psutil/topics>`_
+- `StackOverflow <https://stackoverflow.com/questions/tagged/psutil>`_
+- `Blog <http://grodola.blogspot.com/search/label/psutil>`_
+- `Development guide <https://github.com/giampaolo/psutil/blob/master/docs/DEVGUIDE.rst>`_
+- `What's new <https://github.com/giampaolo/psutil/blob/master/HISTORY.rst>`_
+
+
+Summary
+=======
+
+psutil (process and system utilities) is a cross-platform library for
+retrieving information on **running processes** and **system utilization**
+(CPU, memory, disks, network, sensors) in Python.
+It is useful mainly for **system monitoring**, **profiling and limiting process
+resources** and **management of running processes**.
+It implements many functionalities offered by UNIX command line tools such as:
+ps, top, lsof, netstat, ifconfig, who, df, kill, free, nice, ionice, iostat,
+iotop, uptime, pidof, tty, taskset, pmap.
+psutil currently supports the following platforms:
+
+- **Linux**
+- **Windows**
+- **macOS**
+- **FreeBSD, OpenBSD**, **NetBSD**
+- **Sun Solaris**
+- **AIX**
+
+...both **32-bit** and **64-bit** architectures. Supported Python versions are **2.6**, **2.7** and **3.4+**. `PyPy <http://pypy.org/>`__ is also known to work.
+
+
+Author
+======
+
+psutil was created and is maintained by
+`Giampaolo Rodola <http://grodola.blogspot.com/p/about.html>`__ and it
+received many useful `contributions <https://github.com/giampaolo/psutil/blob/master/CREDITS>`__
+over the years.
+A lot of time and effort went into making psutil as it is right now.
+If you feel psutil is useful to you or your business and want to support its
+future development consider making a small donation:
+
+.. image:: http://www.paypal.com/en_US/i/btn/x-click-but04.gif
+    :target: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A9ZS7PKKRM3S8
+    :alt: Donate via PayPal
+
+Don't want to donate money? Then maybe you could `write me a recommendation on Linkedin <https://www.linkedin.com/in/grodola>`_.
+
+
+Example applications
+====================
+
++------------------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------+
+| .. image:: https://github.com/giampaolo/psutil/blob/master/docs/_static/procinfo-small.png     | .. image:: https://github.com/giampaolo/psutil/blob/master/docs/_static/top-small.png      |
+|    :target: https://github.com/giampaolo/psutil/blob/master/docs/_static/procinfo.png          |     :target: https://github.com/giampaolo/psutil/blob/master/docs/_static/top.png          |
++------------------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------+
+| .. image:: https://github.com/giampaolo/psutil/blob/master/docs/_static/procsmem-small.png     | .. image:: https://github.com/giampaolo/psutil/blob/master/docs/_static/pmap-small.png     |
+|     :target: https://github.com/giampaolo/psutil/blob/master/docs/_static/procsmem.png         |     :target: https://github.com/giampaolo/psutil/blob/master/docs/_static/pmap.png         |
++------------------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------+
+
+Also see `scripts directory <https://github.com/giampaolo/psutil/tree/master/scripts>`__
+and `doc recipes <http://psutil.readthedocs.io/#recipes/>`__.
+
+Projects using psutil
+=====================
+
+psutil has roughly the following monthly downloads:
+
+.. image:: https://pepy.tech/badge/psutil/month
+    :target: https://pepy.tech/project/psutil
+    :alt: Downloads
+
+There are over
+`10.000 open source projects <https://libraries.io/pypi/psutil/dependent_repositories?page=1>`__
+on github which depend from psutil.
+Here's some I find particularly interesting:
+
+- https://github.com/google/grr
+- https://github.com/facebook/osquery/
+- https://github.com/nicolargo/glances
+- https://github.com/Jahaja/psdash
+- https://github.com/ajenti/ajenti
+- https://github.com/home-assistant/home-assistant/
+
+
+Portings
+========
+
+- Go: https://github.com/shirou/gopsutil
+- C: https://github.com/hamon-in/cpslib
+- Node: https://github.com/christkv/node-psutil
+- Rust: https://github.com/borntyping/rust-psutil
+- Ruby: https://github.com/spacewander/posixpsutil
+- Nim: https://github.com/johnscillieri/psutil-nim
+
+
+Example usages
+==============
+
+This represents pretty much the whole psutil API.
+
+CPU
+---
+
+.. code-block:: python
+
+    >>> import psutil
+    >>>
+    >>> psutil.cpu_times()
+    scputimes(user=3961.46, nice=169.729, system=2150.659, idle=16900.540, iowait=629.59, irq=0.0, softirq=19.42, steal=0.0, guest=0, nice=0.0)
+    >>>
+    >>> for x in range(3):
+    ...     psutil.cpu_percent(interval=1)
+    ...
+    4.0
+    5.9
+    3.8
+    >>>
+    >>> for x in range(3):
+    ...     psutil.cpu_percent(interval=1, percpu=True)
+    ...
+    [4.0, 6.9, 3.7, 9.2]
+    [7.0, 8.5, 2.4, 2.1]
+    [1.2, 9.0, 9.9, 7.2]
+    >>>
+    >>> for x in range(3):
+    ...     psutil.cpu_times_percent(interval=1, percpu=False)
+    ...
+    scputimes(user=1.5, nice=0.0, system=0.5, idle=96.5, iowait=1.5, irq=0.0, softirq=0.0, steal=0.0, guest=0.0, guest_nice=0.0)
+    scputimes(user=1.0, nice=0.0, system=0.0, idle=99.0, iowait=0.0, irq=0.0, softirq=0.0, steal=0.0, guest=0.0, guest_nice=0.0)
+    scputimes(user=2.0, nice=0.0, system=0.0, idle=98.0, iowait=0.0, irq=0.0, softirq=0.0, steal=0.0, guest=0.0, guest_nice=0.0)
+    >>>
+    >>> psutil.cpu_count()
+    4
+    >>> psutil.cpu_count(logical=False)
+    2
+    >>>
+    >>> psutil.cpu_stats()
+    scpustats(ctx_switches=20455687, interrupts=6598984, soft_interrupts=2134212, syscalls=0)
+    >>>
+    >>> psutil.cpu_freq()
+    scpufreq(current=931.42925, min=800.0, max=3500.0)
+    >>>
+
+Memory
+------
+
+.. code-block:: python
+
+    >>> psutil.virtual_memory()
+    svmem(total=10367352832, available=6472179712, percent=37.6, used=8186245120, free=2181107712, active=4748992512, inactive=2758115328, buffers=790724608, cached=3500347392, shared=787554304)
+    >>> psutil.swap_memory()
+    sswap(total=2097147904, used=296128512, free=1801019392, percent=14.1, sin=304193536, sout=677842944)
+    >>>
+
+Disks
+-----
+
+.. code-block:: python
+
+    >>> psutil.disk_partitions()
+    [sdiskpart(device='/dev/sda1', mountpoint='/', fstype='ext4', opts='rw,nosuid'),
+     sdiskpart(device='/dev/sda2', mountpoint='/home', fstype='ext, opts='rw')]
+    >>>
+    >>> psutil.disk_usage('/')
+    sdiskusage(total=21378641920, used=4809781248, free=15482871808, percent=22.5)
+    >>>
+    >>> psutil.disk_io_counters(perdisk=False)
+    sdiskio(read_count=719566, write_count=1082197, read_bytes=18626220032, write_bytes=24081764352, read_time=5023392, write_time=63199568, read_merged_count=619166, write_merged_count=812396, busy_time=4523412)
+    >>>
+
+Network
+-------
+
+.. code-block:: python
+
+    >>> psutil.net_io_counters(pernic=True)
+    {'eth0': netio(bytes_sent=485291293, bytes_recv=6004858642, packets_sent=3251564, packets_recv=4787798, errin=0, errout=0, dropin=0, dropout=0),
+     'lo': netio(bytes_sent=2838627, bytes_recv=2838627, packets_sent=30567, packets_recv=30567, errin=0, errout=0, dropin=0, dropout=0)}
+    >>>
+    >>> psutil.net_connections()
+    [sconn(fd=115, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=addr(ip='10.0.0.1', port=48776), raddr=addr(ip='93.186.135.91', port=80), status='ESTABLISHED', pid=1254),
+     sconn(fd=117, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=addr(ip='10.0.0.1', port=43761), raddr=addr(ip='72.14.234.100', port=80), status='CLOSING', pid=2987),
+     ...]
+    >>>
+    >>> psutil.net_if_addrs()
+    {'lo': [snicaddr(family=<AddressFamily.AF_INET: 2>, address='127.0.0.1', netmask='255.0.0.0', broadcast='127.0.0.1', ptp=None),
+            snicaddr(family=<AddressFamily.AF_INET6: 10>, address='::1', netmask='ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff', broadcast=None, ptp=None),
+            snicaddr(family=<AddressFamily.AF_LINK: 17>, address='00:00:00:00:00:00', netmask=None, broadcast='00:00:00:00:00:00', ptp=None)],
+     'wlan0': [snicaddr(family=<AddressFamily.AF_INET: 2>, address='192.168.1.3', netmask='255.255.255.0', broadcast='192.168.1.255', ptp=None),
+               snicaddr(family=<AddressFamily.AF_INET6: 10>, address='fe80::c685:8ff:fe45:641%wlan0', netmask='ffff:ffff:ffff:ffff::', broadcast=None, ptp=None),
+               snicaddr(family=<AddressFamily.AF_LINK: 17>, address='c4:85:08:45:06:41', netmask=None, broadcast='ff:ff:ff:ff:ff:ff', ptp=None)]}
+    >>>
+    >>> psutil.net_if_stats()
+    {'lo': snicstats(isup=True, duplex=<NicDuplex.NIC_DUPLEX_UNKNOWN: 0>, speed=0, mtu=65536),
+     'wlan0': snicstats(isup=True, duplex=<NicDuplex.NIC_DUPLEX_FULL: 2>, speed=100, mtu=1500)}
+    >>>
+
+Sensors
+-------
+
+.. code-block:: python
+
+    >>> import psutil
+    >>> psutil.sensors_temperatures()
+    {'acpitz': [shwtemp(label='', current=47.0, high=103.0, critical=103.0)],
+     'asus': [shwtemp(label='', current=47.0, high=None, critical=None)],
+     'coretemp': [shwtemp(label='Physical id 0', current=52.0, high=100.0, critical=100.0),
+                  shwtemp(label='Core 0', current=45.0, high=100.0, critical=100.0)]}
+    >>>
+    >>> psutil.sensors_fans()
+    {'asus': [sfan(label='cpu_fan', current=3200)]}
+    >>>
+    >>> psutil.sensors_battery()
+    sbattery(percent=93, secsleft=16628, power_plugged=False)
+    >>>
+
+Other system info
+-----------------
+
+.. code-block:: python
+
+    >>> import psutil
+    >>> psutil.users()
+    [suser(name='giampaolo', terminal='pts/2', host='localhost', started=1340737536.0, pid=1352),
+     suser(name='giampaolo', terminal='pts/3', host='localhost', started=1340737792.0, pid=1788)]
+    >>>
+    >>> psutil.boot_time()
+    1365519115.0
+    >>>
+
+Process management
+------------------
+
+.. code-block:: python
+
+    >>> import psutil
+    >>> psutil.pids()
+    [1, 2, 3, 4, 5, 6, 7, 46, 48, 50, 51, 178, 182, 222, 223, 224, 268, 1215, 1216, 1220, 1221, 1243, 1244,
+     1301, 1601, 2237, 2355, 2637, 2774, 3932, 4176, 4177, 4185, 4187, 4189, 4225, 4243, 4245, 4263, 4282,
+     4306, 4311, 4312, 4313, 4314, 4337, 4339, 4357, 4358, 4363, 4383, 4395, 4408, 4433, 4443, 4445, 4446,
+     5167, 5234, 5235, 5252, 5318, 5424, 5644, 6987, 7054, 7055, 7071]
+    >>>
+    >>> p = psutil.Process(7055)
+    >>> p
+    psutil.Process(pid=7055, name='python', started='09:04:44')
+    >>> p.name()
+    'python'
+    >>> p.exe()
+    '/usr/bin/python'
+    >>> p.cwd()
+    '/home/giampaolo'
+    >>> p.cmdline()
+    ['/usr/bin/python', 'main.py']
+    >>>
+    >>> p.pid
+    7055
+    >>> p.ppid()
+    7054
+    >>> p.children(recursive=True)
+    [psutil.Process(pid=29835, name='python2.7', started='11:45:38'),
+     psutil.Process(pid=29836, name='python2.7', started='11:43:39')]
+    >>>
+    >>> p.parent()
+    psutil.Process(pid=4699, name='bash', started='09:06:44')
+    >>> p.parents()
+    [psutil.Process(pid=4699, name='bash', started='09:06:44'),
+     psutil.Process(pid=4689, name='gnome-terminal-server', started='0:06:44'),
+     psutil.Process(pid=1, name='systemd', started='05:56:55')]
+    >>>
+    >>> p.status()
+    'running'
+    >>> p.username()
+    'giampaolo'
+    >>> p.create_time()
+    1267551141.5019531
+    >>> p.terminal()
+    '/dev/pts/0'
+    >>>
+    >>> p.uids()
+    puids(real=1000, effective=1000, saved=1000)
+    >>> p.gids()
+    pgids(real=1000, effective=1000, saved=1000)
+    >>>
+    >>> p.cpu_times()
+    pcputimes(user=1.02, system=0.31, children_user=0.32, children_system=0.1)
+    >>> p.cpu_percent(interval=1.0)
+    12.1
+    >>> p.cpu_affinity()
+    [0, 1, 2, 3]
+    >>> p.cpu_affinity([0, 1])  # set
+    >>> p.cpu_num()
+    1
+    >>>
+    >>> p.memory_info()
+    pmem(rss=10915840, vms=67608576, shared=3313664, text=2310144, lib=0, data=7262208, dirty=0)
+    >>> p.memory_full_info()  # "real" USS memory usage (Linux, macOS, Win only)
+    pfullmem(rss=10199040, vms=52133888, shared=3887104, text=2867200, lib=0, data=5967872, dirty=0, uss=6545408, pss=6872064, swap=0)
+    >>> p.memory_percent()
+    0.7823
+    >>> p.memory_maps()
+    [pmmap_grouped(path='/lib/x8664-linux-gnu/libutil-2.15.so', rss=32768, size=2125824, pss=32768, shared_clean=0, shared_dirty=0, private_clean=20480, private_dirty=12288, referenced=32768, anonymous=12288, swap=0),
+     pmmap_grouped(path='/lib/x8664-linux-gnu/libc-2.15.so', rss=3821568, size=3842048, pss=3821568, shared_clean=0, shared_dirty=0, private_clean=0, private_dirty=3821568, referenced=3575808, anonymous=3821568, swap=0),
+     pmmap_grouped(path='[heap]',  rss=32768, size=139264, pss=32768, shared_clean=0, shared_dirty=0, private_clean=0, private_dirty=32768, referenced=32768, anonymous=32768, swap=0),
+     pmmap_grouped(path='[stack]', rss=2465792, size=2494464, pss=2465792, shared_clean=0, shared_dirty=0, private_clean=0, private_dirty=2465792, referenced=2277376, anonymous=2465792, swap=0),
+     ...]
+    >>>
+    >>> p.io_counters()
+    pio(read_count=478001, write_count=59371, read_bytes=700416, write_bytes=69632, read_chars=456232, write_chars=517543)
+    >>>
+    >>> p.open_files()
+    [popenfile(path='/home/giampaolo/svn/psutil/setup.py', fd=3, position=0, mode='r', flags=32768),
+     popenfile(path='/var/log/monitd', fd=4, position=235542, mode='a', flags=33793)]
+    >>>
+    >>> p.connections()
+    [pconn(fd=115, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=addr(ip='10.0.0.1', port=48776), raddr=addr(ip='93.186.135.91', port=80), status='ESTABLISHED'),
+     pconn(fd=117, family=<AddressFamily.AF_INET: 2>, type=<SocketType.SOCK_STREAM: 1>, laddr=addr(ip='10.0.0.1', port=43761), raddr=addr(ip='72.14.234.100', port=80), status='CLOSING')]
+    >>>
+    >>> p.num_threads()
+    4
+    >>> p.num_fds()
+    8
+    >>> p.threads()
+    [pthread(id=5234, user_time=22.5, system_time=9.2891),
+     pthread(id=5237, user_time=0.0707, system_time=1.1)]
+    >>>
+    >>> p.num_ctx_switches()
+    pctxsw(voluntary=78, involuntary=19)
+    >>>
+    >>> p.nice()
+    0
+    >>> p.nice(10)  # set
+    >>>
+    >>> p.ionice(psutil.IOPRIO_CLASS_IDLE)  # IO priority (Win and Linux only)
+    >>> p.ionice()
+    pionice(ioclass=<IOPriority.IOPRIO_CLASS_IDLE: 3>, value=0)
+    >>>
+    >>> p.rlimit(psutil.RLIMIT_NOFILE, (5, 5))  # set resource limits (Linux only)
+    >>> p.rlimit(psutil.RLIMIT_NOFILE)
+    (5, 5)
+    >>>
+    >>> p.environ()
+    {'LC_PAPER': 'it_IT.UTF-8', 'SHELL': '/bin/bash', 'GREP_OPTIONS': '--color=auto',
+    'XDG_CONFIG_DIRS': '/etc/xdg/xdg-ubuntu:/usr/share/upstart/xdg:/etc/xdg',
+     ...}
+    >>>
+    >>> p.as_dict()
+    {'status': 'running', 'num_ctx_switches': pctxsw(voluntary=63, involuntary=1), 'pid': 5457, ...}
+    >>> p.is_running()
+    True
+    >>> p.suspend()
+    >>> p.resume()
+    >>>
+    >>> p.terminate()
+    >>> p.wait(timeout=3)
+    0
+    >>>
+    >>> psutil.test()
+    USER         PID %CPU %MEM     VSZ     RSS TTY        START    TIME  COMMAND
+    root           1  0.0  0.0   24584    2240            Jun17   00:00  init
+    root           2  0.0  0.0       0       0            Jun17   00:00  kthreadd
+    ...
+    giampaolo  31475  0.0  0.0   20760    3024 /dev/pts/0 Jun19   00:00  python2.4
+    giampaolo  31721  0.0  2.2  773060  181896            00:04   10:30  chrome
+    root       31763  0.0  0.0       0       0            00:05   00:00  kworker/0:1
+    >>>
+
+Further process APIs
+--------------------
+
+.. code-block:: python
+
+    >>> import psutil
+    >>> for proc in psutil.process_iter(attrs=['pid', 'name']):
+    ...     print(proc.info)
+    ...
+    {'pid': 1, 'name': 'systemd'}
+    {'pid': 2, 'name': 'kthreadd'}
+    {'pid': 3, 'name': 'ksoftirqd/0'}
+    ...
+    >>>
+    >>> psutil.pid_exists(3)
+    True
+    >>>
+    >>> def on_terminate(proc):
+    ...     print("process {} terminated".format(proc))
+    ...
+    >>> # waits for multiple processes to terminate
+    >>> gone, alive = psutil.wait_procs(procs_list, timeout=3, callback=on_terminate)
+    >>>
+
+Popen wrapper:
+
+.. code-block:: python
+
+    >>> import psutil
+    >>> from subprocess import PIPE
+    >>> p = psutil.Popen(["/usr/bin/python", "-c", "print('hello')"], stdout=PIPE)
+    >>> p.name()
+    'python'
+    >>> p.username()
+    'giampaolo'
+    >>> p.communicate()
+    ('hello\n', None)
+    >>> p.wait(timeout=2)
+    0
+    >>>
+
+Windows services
+----------------
+
+.. code-block:: python
+
+    >>> list(psutil.win_service_iter())
+    [<WindowsService(name='AeLookupSvc', display_name='Application Experience') at 38850096>,
+     <WindowsService(name='ALG', display_name='Application Layer Gateway Service') at 38850128>,
+     <WindowsService(name='APNMCP', display_name='Ask Update Service') at 38850160>,
+     <WindowsService(name='AppIDSvc', display_name='Application Identity') at 38850192>,
+     ...]
+    >>> s = psutil.win_service_get('alg')
+    >>> s.as_dict()
+    {'binpath': 'C:\\Windows\\System32\\alg.exe',
+     'description': 'Provides support for 3rd party protocol plug-ins for Internet Connection Sharing',
+     'display_name': 'Application Layer Gateway Service',
+     'name': 'alg',
+     'pid': None,
+     'start_type': 'manual',
+     'status': 'stopped',
+     'username': 'NT AUTHORITY\\LocalService'}
+
+
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil-5.6.1.dist-info/RECORD b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil-5.6.1.dist-info/RECORD
new file mode 100644
index 00000000..9d0dcf51
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil-5.6.1.dist-info/RECORD
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+psutil/tests/test_unicode.py,sha256=HfAcnHHSZOYQVzwdKIRZeO_uIDwsWfH456SVon6RiCo,13115
+psutil/tests/test_windows.py,sha256=ZxU5eL_8woLRHAO7_RbC0hxsib6VZXk-vQO-15soua0,33680
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil-5.6.1.dist-info/WHEEL b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil-5.6.1.dist-info/WHEEL
new file mode 100644
index 00000000..bb93ff5e
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil-5.6.1.dist-info/WHEEL
@@ -0,0 +1,5 @@
+Wheel-Version: 1.0
+Generator: bdist_wheel (0.33.1)
+Root-Is-Purelib: false
+Tag: cp37-cp37m-win32
+
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil-5.6.1.dist-info/top_level.txt b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil-5.6.1.dist-info/top_level.txt
new file mode 100644
index 00000000..a4d92cc0
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil-5.6.1.dist-info/top_level.txt
@@ -0,0 +1 @@
+psutil
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/__init__.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/__init__.py
new file mode 100644
index 00000000..bd0d5e4d
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/__init__.py
@@ -0,0 +1,2489 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""psutil is a cross-platform library for retrieving information on
+running processes and system utilization (CPU, memory, disks, network,
+sensors) in Python. Supported platforms:
+
+ - Linux
+ - Windows
+ - macOS
+ - FreeBSD
+ - OpenBSD
+ - NetBSD
+ - Sun Solaris
+ - AIX
+
+Works with Python versions from 2.6 to 3.4+.
+"""
+
+from __future__ import division
+
+import collections
+import contextlib
+import datetime
+import errno
+import functools
+import os
+import signal
+import subprocess
+import sys
+import threading
+import time
+try:
+    import pwd
+except ImportError:
+    pwd = None
+
+from . import _common
+from ._common import deprecated_method
+from ._common import memoize
+from ._common import memoize_when_activated
+from ._common import wrap_numbers as _wrap_numbers
+from ._compat import long
+from ._compat import PY3 as _PY3
+
+from ._common import STATUS_DEAD
+from ._common import STATUS_DISK_SLEEP
+from ._common import STATUS_IDLE
+from ._common import STATUS_LOCKED
+from ._common import STATUS_PARKED
+from ._common import STATUS_RUNNING
+from ._common import STATUS_SLEEPING
+from ._common import STATUS_STOPPED
+from ._common import STATUS_TRACING_STOP
+from ._common import STATUS_WAITING
+from ._common import STATUS_WAKING
+from ._common import STATUS_ZOMBIE
+
+from ._common import CONN_CLOSE
+from ._common import CONN_CLOSE_WAIT
+from ._common import CONN_CLOSING
+from ._common import CONN_ESTABLISHED
+from ._common import CONN_FIN_WAIT1
+from ._common import CONN_FIN_WAIT2
+from ._common import CONN_LAST_ACK
+from ._common import CONN_LISTEN
+from ._common import CONN_NONE
+from ._common import CONN_SYN_RECV
+from ._common import CONN_SYN_SENT
+from ._common import CONN_TIME_WAIT
+from ._common import NIC_DUPLEX_FULL
+from ._common import NIC_DUPLEX_HALF
+from ._common import NIC_DUPLEX_UNKNOWN
+
+from ._common import AIX
+from ._common import BSD
+from ._common import FREEBSD  # NOQA
+from ._common import LINUX
+from ._common import MACOS
+from ._common import NETBSD  # NOQA
+from ._common import OPENBSD  # NOQA
+from ._common import OSX  # deprecated alias
+from ._common import POSIX  # NOQA
+from ._common import SUNOS
+from ._common import WINDOWS
+
+if LINUX:
+    # This is public API and it will be retrieved from _pslinux.py
+    # via sys.modules.
+    PROCFS_PATH = "/proc"
+
+    from . import _pslinux as _psplatform
+
+    from ._pslinux import IOPRIO_CLASS_BE  # NOQA
+    from ._pslinux import IOPRIO_CLASS_IDLE  # NOQA
+    from ._pslinux import IOPRIO_CLASS_NONE  # NOQA
+    from ._pslinux import IOPRIO_CLASS_RT  # NOQA
+    # Linux >= 2.6.36
+    if _psplatform.HAS_PRLIMIT:
+        from ._psutil_linux import RLIM_INFINITY  # NOQA
+        from ._psutil_linux import RLIMIT_AS  # NOQA
+        from ._psutil_linux import RLIMIT_CORE  # NOQA
+        from ._psutil_linux import RLIMIT_CPU  # NOQA
+        from ._psutil_linux import RLIMIT_DATA  # NOQA
+        from ._psutil_linux import RLIMIT_FSIZE  # NOQA
+        from ._psutil_linux import RLIMIT_LOCKS  # NOQA
+        from ._psutil_linux import RLIMIT_MEMLOCK  # NOQA
+        from ._psutil_linux import RLIMIT_NOFILE  # NOQA
+        from ._psutil_linux import RLIMIT_NPROC  # NOQA
+        from ._psutil_linux import RLIMIT_RSS  # NOQA
+        from ._psutil_linux import RLIMIT_STACK  # NOQA
+        # Kinda ugly but considerably faster than using hasattr() and
+        # setattr() against the module object (we are at import time:
+        # speed matters).
+        from . import _psutil_linux
+        try:
+            RLIMIT_MSGQUEUE = _psutil_linux.RLIMIT_MSGQUEUE
+        except AttributeError:
+            pass
+        try:
+            RLIMIT_NICE = _psutil_linux.RLIMIT_NICE
+        except AttributeError:
+            pass
+        try:
+            RLIMIT_RTPRIO = _psutil_linux.RLIMIT_RTPRIO
+        except AttributeError:
+            pass
+        try:
+            RLIMIT_RTTIME = _psutil_linux.RLIMIT_RTTIME
+        except AttributeError:
+            pass
+        try:
+            RLIMIT_SIGPENDING = _psutil_linux.RLIMIT_SIGPENDING
+        except AttributeError:
+            pass
+
+elif WINDOWS:
+    from . import _pswindows as _psplatform
+    from ._psutil_windows import ABOVE_NORMAL_PRIORITY_CLASS  # NOQA
+    from ._psutil_windows import BELOW_NORMAL_PRIORITY_CLASS  # NOQA
+    from ._psutil_windows import HIGH_PRIORITY_CLASS  # NOQA
+    from ._psutil_windows import IDLE_PRIORITY_CLASS  # NOQA
+    from ._psutil_windows import NORMAL_PRIORITY_CLASS  # NOQA
+    from ._psutil_windows import REALTIME_PRIORITY_CLASS  # NOQA
+    from ._pswindows import CONN_DELETE_TCB  # NOQA
+
+elif MACOS:
+    from . import _psosx as _psplatform
+
+elif BSD:
+    from . import _psbsd as _psplatform
+
+elif SUNOS:
+    from . import _pssunos as _psplatform
+    from ._pssunos import CONN_BOUND  # NOQA
+    from ._pssunos import CONN_IDLE  # NOQA
+
+    # This is public writable API which is read from _pslinux.py and
+    # _pssunos.py via sys.modules.
+    PROCFS_PATH = "/proc"
+
+elif AIX:
+    from . import _psaix as _psplatform
+
+    # This is public API and it will be retrieved from _pslinux.py
+    # via sys.modules.
+    PROCFS_PATH = "/proc"
+
+else:  # pragma: no cover
+    raise NotImplementedError('platform %s is not supported' % sys.platform)
+
+
+__all__ = [
+    # exceptions
+    "Error", "NoSuchProcess", "ZombieProcess", "AccessDenied",
+    "TimeoutExpired",
+
+    # constants
+    "version_info", "__version__",
+
+    "STATUS_RUNNING", "STATUS_IDLE", "STATUS_SLEEPING", "STATUS_DISK_SLEEP",
+    "STATUS_STOPPED", "STATUS_TRACING_STOP", "STATUS_ZOMBIE", "STATUS_DEAD",
+    "STATUS_WAKING", "STATUS_LOCKED", "STATUS_WAITING", "STATUS_LOCKED",
+    "STATUS_PARKED",
+
+    "CONN_ESTABLISHED", "CONN_SYN_SENT", "CONN_SYN_RECV", "CONN_FIN_WAIT1",
+    "CONN_FIN_WAIT2", "CONN_TIME_WAIT", "CONN_CLOSE", "CONN_CLOSE_WAIT",
+    "CONN_LAST_ACK", "CONN_LISTEN", "CONN_CLOSING", "CONN_NONE",
+
+    "AF_LINK",
+
+    "NIC_DUPLEX_FULL", "NIC_DUPLEX_HALF", "NIC_DUPLEX_UNKNOWN",
+
+    "POWER_TIME_UNKNOWN", "POWER_TIME_UNLIMITED",
+
+    "BSD", "FREEBSD", "LINUX", "NETBSD", "OPENBSD", "MACOS", "OSX", "POSIX",
+    "SUNOS", "WINDOWS", "AIX",
+
+    # classes
+    "Process", "Popen",
+
+    # functions
+    "pid_exists", "pids", "process_iter", "wait_procs",             # proc
+    "virtual_memory", "swap_memory",                                # memory
+    "cpu_times", "cpu_percent", "cpu_times_percent", "cpu_count",   # cpu
+    "cpu_stats",  # "cpu_freq",
+    "net_io_counters", "net_connections", "net_if_addrs",           # network
+    "net_if_stats",
+    "disk_io_counters", "disk_partitions", "disk_usage",            # disk
+    # "sensors_temperatures", "sensors_battery", "sensors_fans"     # sensors
+    "users", "boot_time",                                           # others
+]
+
+
+__all__.extend(_psplatform.__extra__all__)
+__author__ = "Giampaolo Rodola'"
+__version__ = "5.6.1"
+version_info = tuple([int(num) for num in __version__.split('.')])
+
+_timer = getattr(time, 'monotonic', time.time)
+AF_LINK = _psplatform.AF_LINK
+POWER_TIME_UNLIMITED = _common.POWER_TIME_UNLIMITED
+POWER_TIME_UNKNOWN = _common.POWER_TIME_UNKNOWN
+_TOTAL_PHYMEM = None
+_LOWEST_PID = None
+
+# Sanity check in case the user messed up with psutil installation
+# or did something weird with sys.path. In this case we might end
+# up importing a python module using a C extension module which
+# was compiled for a different version of psutil.
+# We want to prevent that by failing sooner rather than later.
+# See: https://github.com/giampaolo/psutil/issues/564
+if (int(__version__.replace('.', '')) !=
+        getattr(_psplatform.cext, 'version', None)):
+    msg = "version conflict: %r C extension module was built for another " \
+          "version of psutil" % getattr(_psplatform.cext, "__file__")
+    if hasattr(_psplatform.cext, 'version'):
+        msg += " (%s instead of %s)" % (
+            '.'.join([x for x in str(_psplatform.cext.version)]), __version__)
+    else:
+        msg += " (different than %s)" % __version__
+    msg += "; you may try to 'pip uninstall psutil', manually remove %s" % (
+        getattr(_psplatform.cext, "__file__",
+                "the existing psutil install directory"))
+    msg += " or clean the virtual env somehow, then reinstall"
+    raise ImportError(msg)
+
+
+# =====================================================================
+# --- Exceptions
+# =====================================================================
+
+
+class Error(Exception):
+    """Base exception class. All other psutil exceptions inherit
+    from this one.
+    """
+
+    def __init__(self, msg=""):
+        Exception.__init__(self, msg)
+        self.msg = msg
+
+    def __repr__(self):
+        ret = "psutil.%s %s" % (self.__class__.__name__, self.msg)
+        return ret.strip()
+
+    __str__ = __repr__
+
+
+class NoSuchProcess(Error):
+    """Exception raised when a process with a certain PID doesn't
+    or no longer exists.
+    """
+
+    def __init__(self, pid, name=None, msg=None):
+        Error.__init__(self, msg)
+        self.pid = pid
+        self.name = name
+        self.msg = msg
+        if msg is None:
+            if name:
+                details = "(pid=%s, name=%s)" % (self.pid, repr(self.name))
+            else:
+                details = "(pid=%s)" % self.pid
+            self.msg = "process no longer exists " + details
+
+
+class ZombieProcess(NoSuchProcess):
+    """Exception raised when querying a zombie process. This is
+    raised on macOS, BSD and Solaris only, and not always: depending
+    on the query the OS may be able to succeed anyway.
+    On Linux all zombie processes are querable (hence this is never
+    raised). Windows doesn't have zombie processes.
+    """
+
+    def __init__(self, pid, name=None, ppid=None, msg=None):
+        NoSuchProcess.__init__(self, msg)
+        self.pid = pid
+        self.ppid = ppid
+        self.name = name
+        self.msg = msg
+        if msg is None:
+            args = ["pid=%s" % pid]
+            if name:
+                args.append("name=%s" % repr(self.name))
+            if ppid:
+                args.append("ppid=%s" % self.ppid)
+            details = "(%s)" % ", ".join(args)
+            self.msg = "process still exists but it's a zombie " + details
+
+
+class AccessDenied(Error):
+    """Exception raised when permission to perform an action is denied."""
+
+    def __init__(self, pid=None, name=None, msg=None):
+        Error.__init__(self, msg)
+        self.pid = pid
+        self.name = name
+        self.msg = msg
+        if msg is None:
+            if (pid is not None) and (name is not None):
+                self.msg = "(pid=%s, name=%s)" % (pid, repr(name))
+            elif (pid is not None):
+                self.msg = "(pid=%s)" % self.pid
+            else:
+                self.msg = ""
+
+
+class TimeoutExpired(Error):
+    """Raised on Process.wait(timeout) if timeout expires and process
+    is still alive.
+    """
+
+    def __init__(self, seconds, pid=None, name=None):
+        Error.__init__(self, "timeout after %s seconds" % seconds)
+        self.seconds = seconds
+        self.pid = pid
+        self.name = name
+        if (pid is not None) and (name is not None):
+            self.msg += " (pid=%s, name=%s)" % (pid, repr(name))
+        elif (pid is not None):
+            self.msg += " (pid=%s)" % self.pid
+
+
+# Push exception classes into platform specific module namespace.
+_psplatform.NoSuchProcess = NoSuchProcess
+_psplatform.ZombieProcess = ZombieProcess
+_psplatform.AccessDenied = AccessDenied
+_psplatform.TimeoutExpired = TimeoutExpired
+if POSIX:
+    from . import _psposix
+    _psposix.TimeoutExpired = TimeoutExpired
+
+
+# =====================================================================
+# --- Utils
+# =====================================================================
+
+
+if hasattr(_psplatform, 'ppid_map'):
+    # Faster version (Windows and Linux).
+    _ppid_map = _psplatform.ppid_map
+else:
+    def _ppid_map():
+        """Return a {pid: ppid, ...} dict for all running processes in
+        one shot. Used to speed up Process.children().
+        """
+        ret = {}
+        for pid in pids():
+            try:
+                ret[pid] = _psplatform.Process(pid).ppid()
+            except (NoSuchProcess, ZombieProcess):
+                pass
+        return ret
+
+
+def _assert_pid_not_reused(fun):
+    """Decorator which raises NoSuchProcess in case a process is no
+    longer running or its PID has been reused.
+    """
+    @functools.wraps(fun)
+    def wrapper(self, *args, **kwargs):
+        if not self.is_running():
+            raise NoSuchProcess(self.pid, self._name)
+        return fun(self, *args, **kwargs)
+    return wrapper
+
+
+def _pprint_secs(secs):
+    """Format seconds in a human readable form."""
+    now = time.time()
+    secs_ago = int(now - secs)
+    if secs_ago < 60 * 60 * 24:
+        fmt = "%H:%M:%S"
+    else:
+        fmt = "%Y-%m-%d %H:%M:%S"
+    return datetime.datetime.fromtimestamp(secs).strftime(fmt)
+
+
+# =====================================================================
+# --- Process class
+# =====================================================================
+
+
+class Process(object):
+    """Represents an OS process with the given PID.
+    If PID is omitted current process PID (os.getpid()) is used.
+    Raise NoSuchProcess if PID does not exist.
+
+    Note that most of the methods of this class do not make sure
+    the PID of the process being queried has been reused over time.
+    That means you might end up retrieving an information referring
+    to another process in case the original one this instance
+    refers to is gone in the meantime.
+
+    The only exceptions for which process identity is pre-emptively
+    checked and guaranteed are:
+
+     - parent()
+     - children()
+     - nice() (set)
+     - ionice() (set)
+     - rlimit() (set)
+     - cpu_affinity (set)
+     - suspend()
+     - resume()
+     - send_signal()
+     - terminate()
+     - kill()
+
+    To prevent this problem for all other methods you can:
+     - use is_running() before querying the process
+     - if you're continuously iterating over a set of Process
+       instances use process_iter() which pre-emptively checks
+     process identity for every yielded instance
+    """
+
+    def __init__(self, pid=None):
+        self._init(pid)
+
+    def _init(self, pid, _ignore_nsp=False):
+        if pid is None:
+            pid = os.getpid()
+        else:
+            if not _PY3 and not isinstance(pid, (int, long)):
+                raise TypeError('pid must be an integer (got %r)' % pid)
+            if pid < 0:
+                raise ValueError('pid must be a positive integer (got %s)'
+                                 % pid)
+        self._pid = pid
+        self._name = None
+        self._exe = None
+        self._create_time = None
+        self._gone = False
+        self._hash = None
+        self._lock = threading.RLock()
+        # used for caching on Windows only (on POSIX ppid may change)
+        self._ppid = None
+        # platform-specific modules define an _psplatform.Process
+        # implementation class
+        self._proc = _psplatform.Process(pid)
+        self._last_sys_cpu_times = None
+        self._last_proc_cpu_times = None
+        # cache creation time for later use in is_running() method
+        try:
+            self.create_time()
+        except AccessDenied:
+            # We should never get here as AFAIK we're able to get
+            # process creation time on all platforms even as a
+            # limited user.
+            pass
+        except ZombieProcess:
+            # Zombies can still be queried by this class (although
+            # not always) and pids() return them so just go on.
+            pass
+        except NoSuchProcess:
+            if not _ignore_nsp:
+                msg = 'no process found with pid %s' % pid
+                raise NoSuchProcess(pid, None, msg)
+            else:
+                self._gone = True
+        # This pair is supposed to indentify a Process instance
+        # univocally over time (the PID alone is not enough as
+        # it might refer to a process whose PID has been reused).
+        # This will be used later in __eq__() and is_running().
+        self._ident = (self.pid, self._create_time)
+
+    def __str__(self):
+        try:
+            info = collections.OrderedDict()
+        except AttributeError:
+            info = {}  # Python 2.6
+        info["pid"] = self.pid
+        try:
+            info["name"] = self.name()
+            if self._create_time:
+                info['started'] = _pprint_secs(self._create_time)
+        except ZombieProcess:
+            info["status"] = "zombie"
+        except NoSuchProcess:
+            info["status"] = "terminated"
+        except AccessDenied:
+            pass
+        return "%s.%s(%s)" % (
+            self.__class__.__module__,
+            self.__class__.__name__,
+            ", ".join(["%s=%r" % (k, v) for k, v in info.items()]))
+
+    __repr__ = __str__
+
+    def __eq__(self, other):
+        # Test for equality with another Process object based
+        # on PID and creation time.
+        if not isinstance(other, Process):
+            return NotImplemented
+        return self._ident == other._ident
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        if self._hash is None:
+            self._hash = hash(self._ident)
+        return self._hash
+
+    @property
+    def pid(self):
+        """The process PID."""
+        return self._pid
+
+    # --- utility methods
+
+    @contextlib.contextmanager
+    def oneshot(self):
+        """Utility context manager which considerably speeds up the
+        retrieval of multiple process information at the same time.
+
+        Internally different process info (e.g. name, ppid, uids,
+        gids, ...) may be fetched by using the same routine, but
+        only one information is returned and the others are discarded.
+        When using this context manager the internal routine is
+        executed once (in the example below on name()) and the
+        other info are cached.
+
+        The cache is cleared when exiting the context manager block.
+        The advice is to use this every time you retrieve more than
+        one information about the process. If you're lucky, you'll
+        get a hell of a speedup.
+
+        >>> import psutil
+        >>> p = psutil.Process()
+        >>> with p.oneshot():
+        ...     p.name()  # collect multiple info
+        ...     p.cpu_times()  # return cached value
+        ...     p.cpu_percent()  # return cached value
+        ...     p.create_time()  # return cached value
+        ...
+        >>>
+        """
+        with self._lock:
+            if hasattr(self, "_cache"):
+                # NOOP: this covers the use case where the user enters the
+                # context twice:
+                #
+                # >>> with p.oneshot():
+                # ...    with p.oneshot():
+                # ...
+                #
+                # Also, since as_dict() internally uses oneshot()
+                # I expect that the code below will be a pretty common
+                # "mistake" that the user will make, so let's guard
+                # against that:
+                #
+                # >>> with p.oneshot():
+                # ...    p.as_dict()
+                # ...
+                yield
+            else:
+                try:
+                    # cached in case cpu_percent() is used
+                    self.cpu_times.cache_activate(self)
+                    # cached in case memory_percent() is used
+                    self.memory_info.cache_activate(self)
+                    # cached in case parent() is used
+                    self.ppid.cache_activate(self)
+                    # cached in case username() is used
+                    if POSIX:
+                        self.uids.cache_activate(self)
+                    # specific implementation cache
+                    self._proc.oneshot_enter()
+                    yield
+                finally:
+                    self.cpu_times.cache_deactivate(self)
+                    self.memory_info.cache_deactivate(self)
+                    self.ppid.cache_deactivate(self)
+                    if POSIX:
+                        self.uids.cache_deactivate(self)
+                    self._proc.oneshot_exit()
+
+    def as_dict(self, attrs=None, ad_value=None):
+        """Utility method returning process information as a
+        hashable dictionary.
+        If *attrs* is specified it must be a list of strings
+        reflecting available Process class' attribute names
+        (e.g. ['cpu_times', 'name']) else all public (read
+        only) attributes are assumed.
+        *ad_value* is the value which gets assigned in case
+        AccessDenied or ZombieProcess exception is raised when
+        retrieving that particular process information.
+        """
+        valid_names = _as_dict_attrnames
+        if attrs is not None:
+            if not isinstance(attrs, (list, tuple, set, frozenset)):
+                raise TypeError("invalid attrs type %s" % type(attrs))
+            attrs = set(attrs)
+            invalid_names = attrs - valid_names
+            if invalid_names:
+                raise ValueError("invalid attr name%s %s" % (
+                    "s" if len(invalid_names) > 1 else "",
+                    ", ".join(map(repr, invalid_names))))
+
+        retdict = dict()
+        ls = attrs or valid_names
+        with self.oneshot():
+            for name in ls:
+                try:
+                    if name == 'pid':
+                        ret = self.pid
+                    else:
+                        meth = getattr(self, name)
+                        ret = meth()
+                except (AccessDenied, ZombieProcess):
+                    ret = ad_value
+                except NotImplementedError:
+                    # in case of not implemented functionality (may happen
+                    # on old or exotic systems) we want to crash only if
+                    # the user explicitly asked for that particular attr
+                    if attrs:
+                        raise
+                    continue
+                retdict[name] = ret
+        return retdict
+
+    def parent(self):
+        """Return the parent process as a Process object pre-emptively
+        checking whether PID has been reused.
+        If no parent is known return None.
+        """
+        lowest_pid = _LOWEST_PID if _LOWEST_PID is not None else pids()[0]
+        if self.pid == lowest_pid:
+            return None
+        ppid = self.ppid()
+        if ppid is not None:
+            ctime = self.create_time()
+            try:
+                parent = Process(ppid)
+                if parent.create_time() <= ctime:
+                    return parent
+                # ...else ppid has been reused by another process
+            except NoSuchProcess:
+                pass
+
+    def parents(self):
+        """Return the parents of this process as a list of Process
+        instances. If no parents are known return an empty list.
+        """
+        parents = []
+        proc = self.parent()
+        while proc is not None:
+            parents.append(proc)
+            proc = proc.parent()
+        return parents
+
+    def is_running(self):
+        """Return whether this process is running.
+        It also checks if PID has been reused by another process in
+        which case return False.
+        """
+        if self._gone:
+            return False
+        try:
+            # Checking if PID is alive is not enough as the PID might
+            # have been reused by another process: we also want to
+            # verify process identity.
+            # Process identity / uniqueness over time is guaranteed by
+            # (PID + creation time) and that is verified in __eq__.
+            return self == Process(self.pid)
+        except ZombieProcess:
+            # We should never get here as it's already handled in
+            # Process.__init__; here just for extra safety.
+            return True
+        except NoSuchProcess:
+            self._gone = True
+            return False
+
+    # --- actual API
+
+    @memoize_when_activated
+    def ppid(self):
+        """The process parent PID.
+        On Windows the return value is cached after first call.
+        """
+        # On POSIX we don't want to cache the ppid as it may unexpectedly
+        # change to 1 (init) in case this process turns into a zombie:
+        # https://github.com/giampaolo/psutil/issues/321
+        # http://stackoverflow.com/questions/356722/
+
+        # XXX should we check creation time here rather than in
+        # Process.parent()?
+        if POSIX:
+            return self._proc.ppid()
+        else:  # pragma: no cover
+            self._ppid = self._ppid or self._proc.ppid()
+            return self._ppid
+
+    def name(self):
+        """The process name. The return value is cached after first call."""
+        # Process name is only cached on Windows as on POSIX it may
+        # change, see:
+        # https://github.com/giampaolo/psutil/issues/692
+        if WINDOWS and self._name is not None:
+            return self._name
+        name = self._proc.name()
+        if POSIX and len(name) >= 15:
+            # On UNIX the name gets truncated to the first 15 characters.
+            # If it matches the first part of the cmdline we return that
+            # one instead because it's usually more explicative.
+            # Examples are "gnome-keyring-d" vs. "gnome-keyring-daemon".
+            try:
+                cmdline = self.cmdline()
+            except AccessDenied:
+                pass
+            else:
+                if cmdline:
+                    extended_name = os.path.basename(cmdline[0])
+                    if extended_name.startswith(name):
+                        name = extended_name
+        self._name = name
+        self._proc._name = name
+        return name
+
+    def exe(self):
+        """The process executable as an absolute path.
+        May also be an empty string.
+        The return value is cached after first call.
+        """
+        def guess_it(fallback):
+            # try to guess exe from cmdline[0] in absence of a native
+            # exe representation
+            cmdline = self.cmdline()
+            if cmdline and hasattr(os, 'access') and hasattr(os, 'X_OK'):
+                exe = cmdline[0]  # the possible exe
+                # Attempt to guess only in case of an absolute path.
+                # It is not safe otherwise as the process might have
+                # changed cwd.
+                if (os.path.isabs(exe) and
+                        os.path.isfile(exe) and
+                        os.access(exe, os.X_OK)):
+                    return exe
+            if isinstance(fallback, AccessDenied):
+                raise fallback
+            return fallback
+
+        if self._exe is None:
+            try:
+                exe = self._proc.exe()
+            except AccessDenied as err:
+                return guess_it(fallback=err)
+            else:
+                if not exe:
+                    # underlying implementation can legitimately return an
+                    # empty string; if that's the case we don't want to
+                    # raise AD while guessing from the cmdline
+                    try:
+                        exe = guess_it(fallback=exe)
+                    except AccessDenied:
+                        pass
+                self._exe = exe
+        return self._exe
+
+    def cmdline(self):
+        """The command line this process has been called with."""
+        return self._proc.cmdline()
+
+    def status(self):
+        """The process current status as a STATUS_* constant."""
+        try:
+            return self._proc.status()
+        except ZombieProcess:
+            return STATUS_ZOMBIE
+
+    def username(self):
+        """The name of the user that owns the process.
+        On UNIX this is calculated by using *real* process uid.
+        """
+        if POSIX:
+            if pwd is None:
+                # might happen if python was installed from sources
+                raise ImportError(
+                    "requires pwd module shipped with standard python")
+            real_uid = self.uids().real
+            try:
+                return pwd.getpwuid(real_uid).pw_name
+            except KeyError:
+                # the uid can't be resolved by the system
+                return str(real_uid)
+        else:
+            return self._proc.username()
+
+    def create_time(self):
+        """The process creation time as a floating point number
+        expressed in seconds since the epoch, in UTC.
+        The return value is cached after first call.
+        """
+        if self._create_time is None:
+            self._create_time = self._proc.create_time()
+        return self._create_time
+
+    def cwd(self):
+        """Process current working directory as an absolute path."""
+        return self._proc.cwd()
+
+    def nice(self, value=None):
+        """Get or set process niceness (priority)."""
+        if value is None:
+            return self._proc.nice_get()
+        else:
+            if not self.is_running():
+                raise NoSuchProcess(self.pid, self._name)
+            self._proc.nice_set(value)
+
+    if POSIX:
+
+        @memoize_when_activated
+        def uids(self):
+            """Return process UIDs as a (real, effective, saved)
+            namedtuple.
+            """
+            return self._proc.uids()
+
+        def gids(self):
+            """Return process GIDs as a (real, effective, saved)
+            namedtuple.
+            """
+            return self._proc.gids()
+
+        def terminal(self):
+            """The terminal associated with this process, if any,
+            else None.
+            """
+            return self._proc.terminal()
+
+        def num_fds(self):
+            """Return the number of file descriptors opened by this
+            process (POSIX only).
+            """
+            return self._proc.num_fds()
+
+    # Linux, BSD, AIX and Windows only
+    if hasattr(_psplatform.Process, "io_counters"):
+
+        def io_counters(self):
+            """Return process I/O statistics as a
+            (read_count, write_count, read_bytes, write_bytes)
+            namedtuple.
+            Those are the number of read/write calls performed and the
+            amount of bytes read and written by the process.
+            """
+            return self._proc.io_counters()
+
+    # Linux and Windows >= Vista only
+    if hasattr(_psplatform.Process, "ionice_get"):
+
+        def ionice(self, ioclass=None, value=None):
+            """Get or set process I/O niceness (priority).
+
+            On Linux *ioclass* is one of the IOPRIO_CLASS_* constants.
+            *value* is a number which goes from 0 to 7. The higher the
+            value, the lower the I/O priority of the process.
+
+            On Windows only *ioclass* is used and it can be set to 2
+            (normal), 1 (low) or 0 (very low).
+
+            Available on Linux and Windows > Vista only.
+            """
+            if ioclass is None:
+                if value is not None:
+                    raise ValueError("'ioclass' argument must be specified")
+                return self._proc.ionice_get()
+            else:
+                return self._proc.ionice_set(ioclass, value)
+
+    # Linux only
+    if hasattr(_psplatform.Process, "rlimit"):
+
+        def rlimit(self, resource, limits=None):
+            """Get or set process resource limits as a (soft, hard)
+            tuple.
+
+            *resource* is one of the RLIMIT_* constants.
+            *limits* is supposed to be a (soft, hard)  tuple.
+
+            See "man prlimit" for further info.
+            Available on Linux only.
+            """
+            if limits is None:
+                return self._proc.rlimit(resource)
+            else:
+                return self._proc.rlimit(resource, limits)
+
+    # Windows, Linux and FreeBSD only
+    if hasattr(_psplatform.Process, "cpu_affinity_get"):
+
+        def cpu_affinity(self, cpus=None):
+            """Get or set process CPU affinity.
+            If specified, *cpus* must be a list of CPUs for which you
+            want to set the affinity (e.g. [0, 1]).
+            If an empty list is passed, all egible CPUs are assumed
+            (and set).
+            (Windows, Linux and BSD only).
+            """
+            if cpus is None:
+                return list(set(self._proc.cpu_affinity_get()))
+            else:
+                if not cpus:
+                    if hasattr(self._proc, "_get_eligible_cpus"):
+                        cpus = self._proc._get_eligible_cpus()
+                    else:
+                        cpus = tuple(range(len(cpu_times(percpu=True))))
+                self._proc.cpu_affinity_set(list(set(cpus)))
+
+    # Linux, FreeBSD, SunOS
+    if hasattr(_psplatform.Process, "cpu_num"):
+
+        def cpu_num(self):
+            """Return what CPU this process is currently running on.
+            The returned number should be <= psutil.cpu_count()
+            and <= len(psutil.cpu_percent(percpu=True)).
+            It may be used in conjunction with
+            psutil.cpu_percent(percpu=True) to observe the system
+            workload distributed across CPUs.
+            """
+            return self._proc.cpu_num()
+
+    # Linux, macOS and Windows only
+    if hasattr(_psplatform.Process, "environ"):
+
+        def environ(self):
+            """The environment variables of the process as a dict.  Note: this
+            might not reflect changes made after the process started.  """
+            return self._proc.environ()
+
+    if WINDOWS:
+
+        def num_handles(self):
+            """Return the number of handles opened by this process
+            (Windows only).
+            """
+            return self._proc.num_handles()
+
+    def num_ctx_switches(self):
+        """Return the number of voluntary and involuntary context
+        switches performed by this process.
+        """
+        return self._proc.num_ctx_switches()
+
+    def num_threads(self):
+        """Return the number of threads used by this process."""
+        return self._proc.num_threads()
+
+    if hasattr(_psplatform.Process, "threads"):
+
+        def threads(self):
+            """Return threads opened by process as a list of
+            (id, user_time, system_time) namedtuples representing
+            thread id and thread CPU times (user/system).
+            On OpenBSD this method requires root access.
+            """
+            return self._proc.threads()
+
+    @_assert_pid_not_reused
+    def children(self, recursive=False):
+        """Return the children of this process as a list of Process
+        instances, pre-emptively checking whether PID has been reused.
+        If *recursive* is True return all the parent descendants.
+
+        Example (A == this process):
+
+         A ─┐
+            │
+            ├─ B (child) ─┐
+            │             └─ X (grandchild) ─┐
+            │                                └─ Y (great grandchild)
+            ├─ C (child)
+            └─ D (child)
+
+        >>> import psutil
+        >>> p = psutil.Process()
+        >>> p.children()
+        B, C, D
+        >>> p.children(recursive=True)
+        B, X, Y, C, D
+
+        Note that in the example above if process X disappears
+        process Y won't be listed as the reference to process A
+        is lost.
+        """
+        ppid_map = _ppid_map()
+        ret = []
+        if not recursive:
+            for pid, ppid in ppid_map.items():
+                if ppid == self.pid:
+                    try:
+                        child = Process(pid)
+                        # if child happens to be older than its parent
+                        # (self) it means child's PID has been reused
+                        if self.create_time() <= child.create_time():
+                            ret.append(child)
+                    except (NoSuchProcess, ZombieProcess):
+                        pass
+        else:
+            # Construct a {pid: [child pids]} dict
+            reverse_ppid_map = collections.defaultdict(list)
+            for pid, ppid in ppid_map.items():
+                reverse_ppid_map[ppid].append(pid)
+            # Recursively traverse that dict, starting from self.pid,
+            # such that we only call Process() on actual children
+            seen = set()
+            stack = [self.pid]
+            while stack:
+                pid = stack.pop()
+                if pid in seen:
+                    # Since pids can be reused while the ppid_map is
+                    # constructed, there may be rare instances where
+                    # there's a cycle in the recorded process "tree".
+                    continue
+                seen.add(pid)
+                for child_pid in reverse_ppid_map[pid]:
+                    try:
+                        child = Process(child_pid)
+                        # if child happens to be older than its parent
+                        # (self) it means child's PID has been reused
+                        intime = self.create_time() <= child.create_time()
+                        if intime:
+                            ret.append(child)
+                            stack.append(child_pid)
+                    except (NoSuchProcess, ZombieProcess):
+                        pass
+        return ret
+
+    def cpu_percent(self, interval=None):
+        """Return a float representing the current process CPU
+        utilization as a percentage.
+
+        When *interval* is 0.0 or None (default) compares process times
+        to system CPU times elapsed since last call, returning
+        immediately (non-blocking). That means that the first time
+        this is called it will return a meaningful 0.0 value.
+
+        When *interval* is > 0.0 compares process times to system CPU
+        times elapsed before and after the interval (blocking).
+
+        In this case is recommended for accuracy that this function
+        be called with at least 0.1 seconds between calls.
+
+        A value > 100.0 can be returned in case of processes running
+        multiple threads on different CPU cores.
+
+        The returned value is explicitly NOT split evenly between
+        all available logical CPUs. This means that a busy loop process
+        running on a system with 2 logical CPUs will be reported as
+        having 100% CPU utilization instead of 50%.
+
+        Examples:
+
+          >>> import psutil
+          >>> p = psutil.Process(os.getpid())
+          >>> # blocking
+          >>> p.cpu_percent(interval=1)
+          2.0
+          >>> # non-blocking (percentage since last call)
+          >>> p.cpu_percent(interval=None)
+          2.9
+          >>>
+        """
+        blocking = interval is not None and interval > 0.0
+        if interval is not None and interval < 0:
+            raise ValueError("interval is not positive (got %r)" % interval)
+        num_cpus = cpu_count() or 1
+
+        def timer():
+            return _timer() * num_cpus
+
+        if blocking:
+            st1 = timer()
+            pt1 = self._proc.cpu_times()
+            time.sleep(interval)
+            st2 = timer()
+            pt2 = self._proc.cpu_times()
+        else:
+            st1 = self._last_sys_cpu_times
+            pt1 = self._last_proc_cpu_times
+            st2 = timer()
+            pt2 = self._proc.cpu_times()
+            if st1 is None or pt1 is None:
+                self._last_sys_cpu_times = st2
+                self._last_proc_cpu_times = pt2
+                return 0.0
+
+        delta_proc = (pt2.user - pt1.user) + (pt2.system - pt1.system)
+        delta_time = st2 - st1
+        # reset values for next call in case of interval == None
+        self._last_sys_cpu_times = st2
+        self._last_proc_cpu_times = pt2
+
+        try:
+            # This is the utilization split evenly between all CPUs.
+            # E.g. a busy loop process on a 2-CPU-cores system at this
+            # point is reported as 50% instead of 100%.
+            overall_cpus_percent = ((delta_proc / delta_time) * 100)
+        except ZeroDivisionError:
+            # interval was too low
+            return 0.0
+        else:
+            # Note 1:
+            # in order to emulate "top" we multiply the value for the num
+            # of CPU cores. This way the busy process will be reported as
+            # having 100% (or more) usage.
+            #
+            # Note 2:
+            # taskmgr.exe on Windows differs in that it will show 50%
+            # instead.
+            #
+            # Note 3:
+            # a percentage > 100 is legitimate as it can result from a
+            # process with multiple threads running on different CPU
+            # cores (top does the same), see:
+            # http://stackoverflow.com/questions/1032357
+            # https://github.com/giampaolo/psutil/issues/474
+            single_cpu_percent = overall_cpus_percent * num_cpus
+            return round(single_cpu_percent, 1)
+
+    @memoize_when_activated
+    def cpu_times(self):
+        """Return a (user, system, children_user, children_system)
+        namedtuple representing the accumulated process time, in
+        seconds.
+        This is similar to os.times() but per-process.
+        On macOS and Windows children_user and children_system are
+        always set to 0.
+        """
+        return self._proc.cpu_times()
+
+    @memoize_when_activated
+    def memory_info(self):
+        """Return a namedtuple with variable fields depending on the
+        platform, representing memory information about the process.
+
+        The "portable" fields available on all plaforms are `rss` and `vms`.
+
+        All numbers are expressed in bytes.
+        """
+        return self._proc.memory_info()
+
+    @deprecated_method(replacement="memory_info")
+    def memory_info_ex(self):
+        return self.memory_info()
+
+    def memory_full_info(self):
+        """This method returns the same information as memory_info(),
+        plus, on some platform (Linux, macOS, Windows), also provides
+        additional metrics (USS, PSS and swap).
+        The additional metrics provide a better representation of actual
+        process memory usage.
+
+        Namely USS is the memory which is unique to a process and which
+        would be freed if the process was terminated right now.
+
+        It does so by passing through the whole process address.
+        As such it usually requires higher user privileges than
+        memory_info() and is considerably slower.
+        """
+        return self._proc.memory_full_info()
+
+    def memory_percent(self, memtype="rss"):
+        """Compare process memory to total physical system memory and
+        calculate process memory utilization as a percentage.
+        *memtype* argument is a string that dictates what type of
+        process memory you want to compare against (defaults to "rss").
+        The list of available strings can be obtained like this:
+
+        >>> psutil.Process().memory_info()._fields
+        ('rss', 'vms', 'shared', 'text', 'lib', 'data', 'dirty', 'uss', 'pss')
+        """
+        valid_types = list(_psplatform.pfullmem._fields)
+        if memtype not in valid_types:
+            raise ValueError("invalid memtype %r; valid types are %r" % (
+                memtype, tuple(valid_types)))
+        fun = self.memory_info if memtype in _psplatform.pmem._fields else \
+            self.memory_full_info
+        metrics = fun()
+        value = getattr(metrics, memtype)
+
+        # use cached value if available
+        total_phymem = _TOTAL_PHYMEM or virtual_memory().total
+        if not total_phymem > 0:
+            # we should never get here
+            raise ValueError(
+                "can't calculate process memory percent because "
+                "total physical system memory is not positive (%r)"
+                % total_phymem)
+        return (value / float(total_phymem)) * 100
+
+    if hasattr(_psplatform.Process, "memory_maps"):
+        def memory_maps(self, grouped=True):
+            """Return process' mapped memory regions as a list of namedtuples
+            whose fields are variable depending on the platform.
+
+            If *grouped* is True the mapped regions with the same 'path'
+            are grouped together and the different memory fields are summed.
+
+            If *grouped* is False every mapped region is shown as a single
+            entity and the namedtuple will also include the mapped region's
+            address space ('addr') and permission set ('perms').
+            """
+            it = self._proc.memory_maps()
+            if grouped:
+                d = {}
+                for tupl in it:
+                    path = tupl[2]
+                    nums = tupl[3:]
+                    try:
+                        d[path] = map(lambda x, y: x + y, d[path], nums)
+                    except KeyError:
+                        d[path] = nums
+                nt = _psplatform.pmmap_grouped
+                return [nt(path, *d[path]) for path in d]  # NOQA
+            else:
+                nt = _psplatform.pmmap_ext
+                return [nt(*x) for x in it]
+
+    def open_files(self):
+        """Return files opened by process as a list of
+        (path, fd) namedtuples including the absolute file name
+        and file descriptor number.
+        """
+        return self._proc.open_files()
+
+    def connections(self, kind='inet'):
+        """Return socket connections opened by process as a list of
+        (fd, family, type, laddr, raddr, status) namedtuples.
+        The *kind* parameter filters for connections that match the
+        following criteria:
+
+        +------------+----------------------------------------------------+
+        | Kind Value | Connections using                                  |
+        +------------+----------------------------------------------------+
+        | inet       | IPv4 and IPv6                                      |
+        | inet4      | IPv4                                               |
+        | inet6      | IPv6                                               |
+        | tcp        | TCP                                                |
+        | tcp4       | TCP over IPv4                                      |
+        | tcp6       | TCP over IPv6                                      |
+        | udp        | UDP                                                |
+        | udp4       | UDP over IPv4                                      |
+        | udp6       | UDP over IPv6                                      |
+        | unix       | UNIX socket (both UDP and TCP protocols)           |
+        | all        | the sum of all the possible families and protocols |
+        +------------+----------------------------------------------------+
+        """
+        return self._proc.connections(kind)
+
+    # --- signals
+
+    if POSIX:
+        def _send_signal(self, sig):
+            assert not self.pid < 0, self.pid
+            if self.pid == 0:
+                # see "man 2 kill"
+                raise ValueError(
+                    "preventing sending signal to process with PID 0 as it "
+                    "would affect every process in the process group of the "
+                    "calling process (os.getpid()) instead of PID 0")
+            try:
+                os.kill(self.pid, sig)
+            except OSError as err:
+                if err.errno == errno.ESRCH:
+                    if OPENBSD and pid_exists(self.pid):
+                        # We do this because os.kill() lies in case of
+                        # zombie processes.
+                        raise ZombieProcess(self.pid, self._name, self._ppid)
+                    else:
+                        self._gone = True
+                        raise NoSuchProcess(self.pid, self._name)
+                if err.errno in (errno.EPERM, errno.EACCES):
+                    raise AccessDenied(self.pid, self._name)
+                raise
+
+    @_assert_pid_not_reused
+    def send_signal(self, sig):
+        """Send a signal *sig* to process pre-emptively checking
+        whether PID has been reused (see signal module constants) .
+        On Windows only SIGTERM is valid and is treated as an alias
+        for kill().
+        """
+        if POSIX:
+            self._send_signal(sig)
+        else:  # pragma: no cover
+            if sig == signal.SIGTERM:
+                self._proc.kill()
+            # py >= 2.7
+            elif sig in (getattr(signal, "CTRL_C_EVENT", object()),
+                         getattr(signal, "CTRL_BREAK_EVENT", object())):
+                self._proc.send_signal(sig)
+            else:
+                raise ValueError(
+                    "only SIGTERM, CTRL_C_EVENT and CTRL_BREAK_EVENT signals "
+                    "are supported on Windows")
+
+    @_assert_pid_not_reused
+    def suspend(self):
+        """Suspend process execution with SIGSTOP pre-emptively checking
+        whether PID has been reused.
+        On Windows this has the effect ot suspending all process threads.
+        """
+        if POSIX:
+            self._send_signal(signal.SIGSTOP)
+        else:  # pragma: no cover
+            self._proc.suspend()
+
+    @_assert_pid_not_reused
+    def resume(self):
+        """Resume process execution with SIGCONT pre-emptively checking
+        whether PID has been reused.
+        On Windows this has the effect of resuming all process threads.
+        """
+        if POSIX:
+            self._send_signal(signal.SIGCONT)
+        else:  # pragma: no cover
+            self._proc.resume()
+
+    @_assert_pid_not_reused
+    def terminate(self):
+        """Terminate the process with SIGTERM pre-emptively checking
+        whether PID has been reused.
+        On Windows this is an alias for kill().
+        """
+        if POSIX:
+            self._send_signal(signal.SIGTERM)
+        else:  # pragma: no cover
+            self._proc.kill()
+
+    @_assert_pid_not_reused
+    def kill(self):
+        """Kill the current process with SIGKILL pre-emptively checking
+        whether PID has been reused.
+        """
+        if POSIX:
+            self._send_signal(signal.SIGKILL)
+        else:  # pragma: no cover
+            self._proc.kill()
+
+    def wait(self, timeout=None):
+        """Wait for process to terminate and, if process is a children
+        of os.getpid(), also return its exit code, else None.
+
+        If the process is already terminated immediately return None
+        instead of raising NoSuchProcess.
+
+        If *timeout* (in seconds) is specified and process is still
+        alive raise TimeoutExpired.
+
+        To wait for multiple Process(es) use psutil.wait_procs().
+        """
+        if timeout is not None and not timeout >= 0:
+            raise ValueError("timeout must be a positive integer")
+        return self._proc.wait(timeout)
+
+
+# =====================================================================
+# --- Popen class
+# =====================================================================
+
+
+class Popen(Process):
+    """A more convenient interface to stdlib subprocess.Popen class.
+    It starts a sub process and deals with it exactly as when using
+    subprocess.Popen class but in addition also provides all the
+    properties and methods of psutil.Process class as a unified
+    interface:
+
+      >>> import psutil
+      >>> from subprocess import PIPE
+      >>> p = psutil.Popen(["python", "-c", "print 'hi'"], stdout=PIPE)
+      >>> p.name()
+      'python'
+      >>> p.uids()
+      user(real=1000, effective=1000, saved=1000)
+      >>> p.username()
+      'giampaolo'
+      >>> p.communicate()
+      ('hi\n', None)
+      >>> p.terminate()
+      >>> p.wait(timeout=2)
+      0
+      >>>
+
+    For method names common to both classes such as kill(), terminate()
+    and wait(), psutil.Process implementation takes precedence.
+
+    Unlike subprocess.Popen this class pre-emptively checks whether PID
+    has been reused on send_signal(), terminate() and kill() so that
+    you don't accidentally terminate another process, fixing
+    http://bugs.python.org/issue6973.
+
+    For a complete documentation refer to:
+    http://docs.python.org/library/subprocess.html
+    """
+
+    def __init__(self, *args, **kwargs):
+        # Explicitly avoid to raise NoSuchProcess in case the process
+        # spawned by subprocess.Popen terminates too quickly, see:
+        # https://github.com/giampaolo/psutil/issues/193
+        self.__subproc = subprocess.Popen(*args, **kwargs)
+        self._init(self.__subproc.pid, _ignore_nsp=True)
+
+    def __dir__(self):
+        return sorted(set(dir(Popen) + dir(subprocess.Popen)))
+
+    def __enter__(self):
+        if hasattr(self.__subproc, '__enter__'):
+            self.__subproc.__enter__()
+        return self
+
+    def __exit__(self, *args, **kwargs):
+        if hasattr(self.__subproc, '__exit__'):
+            return self.__subproc.__exit__(*args, **kwargs)
+        else:
+            if self.stdout:
+                self.stdout.close()
+            if self.stderr:
+                self.stderr.close()
+            try:
+                # Flushing a BufferedWriter may raise an error.
+                if self.stdin:
+                    self.stdin.close()
+            finally:
+                # Wait for the process to terminate, to avoid zombies.
+                self.wait()
+
+    def __getattribute__(self, name):
+        try:
+            return object.__getattribute__(self, name)
+        except AttributeError:
+            try:
+                return object.__getattribute__(self.__subproc, name)
+            except AttributeError:
+                raise AttributeError("%s instance has no attribute '%s'"
+                                     % (self.__class__.__name__, name))
+
+    def wait(self, timeout=None):
+        if self.__subproc.returncode is not None:
+            return self.__subproc.returncode
+        ret = super(Popen, self).wait(timeout)
+        self.__subproc.returncode = ret
+        return ret
+
+
+# The valid attr names which can be processed by Process.as_dict().
+_as_dict_attrnames = set(
+    [x for x in dir(Process) if not x.startswith('_') and x not in
+     ['send_signal', 'suspend', 'resume', 'terminate', 'kill', 'wait',
+      'is_running', 'as_dict', 'parent', 'parents', 'children', 'rlimit',
+      'memory_info_ex', 'oneshot']])
+
+
+# =====================================================================
+# --- system processes related functions
+# =====================================================================
+
+
+def pids():
+    """Return a list of current running PIDs."""
+    global _LOWEST_PID
+    ret = sorted(_psplatform.pids())
+    _LOWEST_PID = ret[0]
+    return ret
+
+
+def pid_exists(pid):
+    """Return True if given PID exists in the current process list.
+    This is faster than doing "pid in psutil.pids()" and
+    should be preferred.
+    """
+    if pid < 0:
+        return False
+    elif pid == 0 and POSIX:
+        # On POSIX we use os.kill() to determine PID existence.
+        # According to "man 2 kill" PID 0 has a special meaning
+        # though: it refers to <<every process in the process
+        # group of the calling process>> and that is not we want
+        # to do here.
+        return pid in pids()
+    else:
+        return _psplatform.pid_exists(pid)
+
+
+_pmap = {}
+_lock = threading.Lock()
+
+
+def process_iter(attrs=None, ad_value=None):
+    """Return a generator yielding a Process instance for all
+    running processes.
+
+    Every new Process instance is only created once and then cached
+    into an internal table which is updated every time this is used.
+
+    Cached Process instances are checked for identity so that you're
+    safe in case a PID has been reused by another process, in which
+    case the cached instance is updated.
+
+    The sorting order in which processes are yielded is based on
+    their PIDs.
+
+    *attrs* and *ad_value* have the same meaning as in
+    Process.as_dict(). If *attrs* is specified as_dict() is called
+    and the resulting dict is stored as a 'info' attribute attached
+    to returned Process instance.
+    If *attrs* is an empty list it will retrieve all process info
+    (slow).
+    """
+    def add(pid):
+        proc = Process(pid)
+        if attrs is not None:
+            proc.info = proc.as_dict(attrs=attrs, ad_value=ad_value)
+        with _lock:
+            _pmap[proc.pid] = proc
+        return proc
+
+    def remove(pid):
+        with _lock:
+            _pmap.pop(pid, None)
+
+    a = set(pids())
+    b = set(_pmap.keys())
+    new_pids = a - b
+    gone_pids = b - a
+    for pid in gone_pids:
+        remove(pid)
+
+    with _lock:
+        ls = sorted(list(_pmap.items()) +
+                    list(dict.fromkeys(new_pids).items()))
+
+    for pid, proc in ls:
+        try:
+            if proc is None:  # new process
+                yield add(pid)
+            else:
+                # use is_running() to check whether PID has been reused by
+                # another process in which case yield a new Process instance
+                if proc.is_running():
+                    if attrs is not None:
+                        proc.info = proc.as_dict(
+                            attrs=attrs, ad_value=ad_value)
+                    yield proc
+                else:
+                    yield add(pid)
+        except NoSuchProcess:
+            remove(pid)
+        except AccessDenied:
+            # Process creation time can't be determined hence there's
+            # no way to tell whether the pid of the cached process
+            # has been reused. Just return the cached version.
+            if proc is None and pid in _pmap:
+                try:
+                    yield _pmap[pid]
+                except KeyError:
+                    # If we get here it is likely that 2 threads were
+                    # using process_iter().
+                    pass
+            else:
+                raise
+
+
+def wait_procs(procs, timeout=None, callback=None):
+    """Convenience function which waits for a list of processes to
+    terminate.
+
+    Return a (gone, alive) tuple indicating which processes
+    are gone and which ones are still alive.
+
+    The gone ones will have a new *returncode* attribute indicating
+    process exit status (may be None).
+
+    *callback* is a function which gets called every time a process
+    terminates (a Process instance is passed as callback argument).
+
+    Function will return as soon as all processes terminate or when
+    *timeout* occurs.
+    Differently from Process.wait() it will not raise TimeoutExpired if
+    *timeout* occurs.
+
+    Typical use case is:
+
+     - send SIGTERM to a list of processes
+     - give them some time to terminate
+     - send SIGKILL to those ones which are still alive
+
+    Example:
+
+    >>> def on_terminate(proc):
+    ...     print("process {} terminated".format(proc))
+    ...
+    >>> for p in procs:
+    ...    p.terminate()
+    ...
+    >>> gone, alive = wait_procs(procs, timeout=3, callback=on_terminate)
+    >>> for p in alive:
+    ...     p.kill()
+    """
+    def check_gone(proc, timeout):
+        try:
+            returncode = proc.wait(timeout=timeout)
+        except TimeoutExpired:
+            pass
+        else:
+            if returncode is not None or not proc.is_running():
+                proc.returncode = returncode
+                gone.add(proc)
+                if callback is not None:
+                    callback(proc)
+
+    if timeout is not None and not timeout >= 0:
+        msg = "timeout must be a positive integer, got %s" % timeout
+        raise ValueError(msg)
+    gone = set()
+    alive = set(procs)
+    if callback is not None and not callable(callback):
+        raise TypeError("callback %r is not a callable" % callable)
+    if timeout is not None:
+        deadline = _timer() + timeout
+
+    while alive:
+        if timeout is not None and timeout <= 0:
+            break
+        for proc in alive:
+            # Make sure that every complete iteration (all processes)
+            # will last max 1 sec.
+            # We do this because we don't want to wait too long on a
+            # single process: in case it terminates too late other
+            # processes may disappear in the meantime and their PID
+            # reused.
+            max_timeout = 1.0 / len(alive)
+            if timeout is not None:
+                timeout = min((deadline - _timer()), max_timeout)
+                if timeout <= 0:
+                    break
+                check_gone(proc, timeout)
+            else:
+                check_gone(proc, max_timeout)
+        alive = alive - gone
+
+    if alive:
+        # Last attempt over processes survived so far.
+        # timeout == 0 won't make this function wait any further.
+        for proc in alive:
+            check_gone(proc, 0)
+        alive = alive - gone
+
+    return (list(gone), list(alive))
+
+
+# =====================================================================
+# --- CPU related functions
+# =====================================================================
+
+
+def cpu_count(logical=True):
+    """Return the number of logical CPUs in the system (same as
+    os.cpu_count() in Python 3.4).
+
+    If *logical* is False return the number of physical cores only
+    (e.g. hyper thread CPUs are excluded).
+
+    Return None if undetermined.
+
+    The return value is cached after first call.
+    If desired cache can be cleared like this:
+
+    >>> psutil.cpu_count.cache_clear()
+    """
+    if logical:
+        ret = _psplatform.cpu_count_logical()
+    else:
+        ret = _psplatform.cpu_count_physical()
+    if ret is not None and ret < 1:
+        ret = None
+    return ret
+
+
+def cpu_times(percpu=False):
+    """Return system-wide CPU times as a namedtuple.
+    Every CPU time represents the seconds the CPU has spent in the
+    given mode. The namedtuple's fields availability varies depending on the
+    platform:
+
+     - user
+     - system
+     - idle
+     - nice (UNIX)
+     - iowait (Linux)
+     - irq (Linux, FreeBSD)
+     - softirq (Linux)
+     - steal (Linux >= 2.6.11)
+     - guest (Linux >= 2.6.24)
+     - guest_nice (Linux >= 3.2.0)
+
+    When *percpu* is True return a list of namedtuples for each CPU.
+    First element of the list refers to first CPU, second element
+    to second CPU and so on.
+    The order of the list is consistent across calls.
+    """
+    if not percpu:
+        return _psplatform.cpu_times()
+    else:
+        return _psplatform.per_cpu_times()
+
+
+try:
+    _last_cpu_times = cpu_times()
+except Exception:
+    # Don't want to crash at import time.
+    _last_cpu_times = None
+
+try:
+    _last_per_cpu_times = cpu_times(percpu=True)
+except Exception:
+    # Don't want to crash at import time.
+    _last_per_cpu_times = None
+
+
+def _cpu_tot_time(times):
+    """Given a cpu_time() ntuple calculates the total CPU time
+    (including idle time).
+    """
+    tot = sum(times)
+    if LINUX:
+        # On Linux guest times are already accounted in "user" or
+        # "nice" times, so we subtract them from total.
+        # Htop does the same. References:
+        # https://github.com/giampaolo/psutil/pull/940
+        # http://unix.stackexchange.com/questions/178045
+        # https://github.com/torvalds/linux/blob/
+        #     447976ef4fd09b1be88b316d1a81553f1aa7cd07/kernel/sched/
+        #     cputime.c#L158
+        tot -= getattr(times, "guest", 0)  # Linux 2.6.24+
+        tot -= getattr(times, "guest_nice", 0)  # Linux 3.2.0+
+    return tot
+
+
+def _cpu_busy_time(times):
+    """Given a cpu_time() ntuple calculates the busy CPU time.
+    We do so by subtracting all idle CPU times.
+    """
+    busy = _cpu_tot_time(times)
+    busy -= times.idle
+    # Linux: "iowait" is time during which the CPU does not do anything
+    # (waits for IO to complete). On Linux IO wait is *not* accounted
+    # in "idle" time so we subtract it. Htop does the same.
+    # References:
+    # https://github.com/torvalds/linux/blob/
+    #     447976ef4fd09b1be88b316d1a81553f1aa7cd07/kernel/sched/cputime.c#L244
+    busy -= getattr(times, "iowait", 0)
+    return busy
+
+
+def _cpu_times_deltas(t1, t2):
+    assert t1._fields == t2._fields, (t1, t2)
+    field_deltas = []
+    for field in _psplatform.scputimes._fields:
+        field_delta = getattr(t2, field) - getattr(t1, field)
+        # CPU times are always supposed to increase over time
+        # or at least remain the same and that's because time
+        # cannot go backwards.
+        # Surprisingly sometimes this might not be the case (at
+        # least on Windows and Linux), see:
+        # https://github.com/giampaolo/psutil/issues/392
+        # https://github.com/giampaolo/psutil/issues/645
+        # https://github.com/giampaolo/psutil/issues/1210
+        # Trim negative deltas to zero to ignore decreasing fields.
+        # top does the same. Reference:
+        # https://gitlab.com/procps-ng/procps/blob/v3.3.12/top/top.c#L5063
+        field_delta = max(0, field_delta)
+        field_deltas.append(field_delta)
+    return _psplatform.scputimes(*field_deltas)
+
+
+def cpu_percent(interval=None, percpu=False):
+    """Return a float representing the current system-wide CPU
+    utilization as a percentage.
+
+    When *interval* is > 0.0 compares system CPU times elapsed before
+    and after the interval (blocking).
+
+    When *interval* is 0.0 or None compares system CPU times elapsed
+    since last call or module import, returning immediately (non
+    blocking). That means the first time this is called it will
+    return a meaningless 0.0 value which you should ignore.
+    In this case is recommended for accuracy that this function be
+    called with at least 0.1 seconds between calls.
+
+    When *percpu* is True returns a list of floats representing the
+    utilization as a percentage for each CPU.
+    First element of the list refers to first CPU, second element
+    to second CPU and so on.
+    The order of the list is consistent across calls.
+
+    Examples:
+
+      >>> # blocking, system-wide
+      >>> psutil.cpu_percent(interval=1)
+      2.0
+      >>>
+      >>> # blocking, per-cpu
+      >>> psutil.cpu_percent(interval=1, percpu=True)
+      [2.0, 1.0]
+      >>>
+      >>> # non-blocking (percentage since last call)
+      >>> psutil.cpu_percent(interval=None)
+      2.9
+      >>>
+    """
+    global _last_cpu_times
+    global _last_per_cpu_times
+    blocking = interval is not None and interval > 0.0
+    if interval is not None and interval < 0:
+        raise ValueError("interval is not positive (got %r)" % interval)
+
+    def calculate(t1, t2):
+        times_delta = _cpu_times_deltas(t1, t2)
+
+        all_delta = _cpu_tot_time(times_delta)
+        busy_delta = _cpu_busy_time(times_delta)
+
+        try:
+            busy_perc = (busy_delta / all_delta) * 100
+        except ZeroDivisionError:
+            return 0.0
+        else:
+            return round(busy_perc, 1)
+
+    # system-wide usage
+    if not percpu:
+        if blocking:
+            t1 = cpu_times()
+            time.sleep(interval)
+        else:
+            t1 = _last_cpu_times
+            if t1 is None:
+                # Something bad happened at import time. We'll
+                # get a meaningful result on the next call. See:
+                # https://github.com/giampaolo/psutil/pull/715
+                t1 = cpu_times()
+        _last_cpu_times = cpu_times()
+        return calculate(t1, _last_cpu_times)
+    # per-cpu usage
+    else:
+        ret = []
+        if blocking:
+            tot1 = cpu_times(percpu=True)
+            time.sleep(interval)
+        else:
+            tot1 = _last_per_cpu_times
+            if tot1 is None:
+                # Something bad happened at import time. We'll
+                # get a meaningful result on the next call. See:
+                # https://github.com/giampaolo/psutil/pull/715
+                tot1 = cpu_times(percpu=True)
+        _last_per_cpu_times = cpu_times(percpu=True)
+        for t1, t2 in zip(tot1, _last_per_cpu_times):
+            ret.append(calculate(t1, t2))
+        return ret
+
+
+# Use separate global vars for cpu_times_percent() so that it's
+# independent from cpu_percent() and they can both be used within
+# the same program.
+_last_cpu_times_2 = _last_cpu_times
+_last_per_cpu_times_2 = _last_per_cpu_times
+
+
+def cpu_times_percent(interval=None, percpu=False):
+    """Same as cpu_percent() but provides utilization percentages
+    for each specific CPU time as is returned by cpu_times().
+    For instance, on Linux we'll get:
+
+      >>> cpu_times_percent()
+      cpupercent(user=4.8, nice=0.0, system=4.8, idle=90.5, iowait=0.0,
+                 irq=0.0, softirq=0.0, steal=0.0, guest=0.0, guest_nice=0.0)
+      >>>
+
+    *interval* and *percpu* arguments have the same meaning as in
+    cpu_percent().
+    """
+    global _last_cpu_times_2
+    global _last_per_cpu_times_2
+    blocking = interval is not None and interval > 0.0
+    if interval is not None and interval < 0:
+        raise ValueError("interval is not positive (got %r)" % interval)
+
+    def calculate(t1, t2):
+        nums = []
+        times_delta = _cpu_times_deltas(t1, t2)
+        all_delta = _cpu_tot_time(times_delta)
+        # "scale" is the value to multiply each delta with to get percentages.
+        # We use "max" to avoid division by zero (if all_delta is 0, then all
+        # fields are 0 so percentages will be 0 too. all_delta cannot be a
+        # fraction because cpu times are integers)
+        scale = 100.0 / max(1, all_delta)
+        for field_delta in times_delta:
+            field_perc = field_delta * scale
+            field_perc = round(field_perc, 1)
+            # make sure we don't return negative values or values over 100%
+            field_perc = min(max(0.0, field_perc), 100.0)
+            nums.append(field_perc)
+        return _psplatform.scputimes(*nums)
+
+    # system-wide usage
+    if not percpu:
+        if blocking:
+            t1 = cpu_times()
+            time.sleep(interval)
+        else:
+            t1 = _last_cpu_times_2
+            if t1 is None:
+                # Something bad happened at import time. We'll
+                # get a meaningful result on the next call. See:
+                # https://github.com/giampaolo/psutil/pull/715
+                t1 = cpu_times()
+        _last_cpu_times_2 = cpu_times()
+        return calculate(t1, _last_cpu_times_2)
+    # per-cpu usage
+    else:
+        ret = []
+        if blocking:
+            tot1 = cpu_times(percpu=True)
+            time.sleep(interval)
+        else:
+            tot1 = _last_per_cpu_times_2
+            if tot1 is None:
+                # Something bad happened at import time. We'll
+                # get a meaningful result on the next call. See:
+                # https://github.com/giampaolo/psutil/pull/715
+                tot1 = cpu_times(percpu=True)
+        _last_per_cpu_times_2 = cpu_times(percpu=True)
+        for t1, t2 in zip(tot1, _last_per_cpu_times_2):
+            ret.append(calculate(t1, t2))
+        return ret
+
+
+def cpu_stats():
+    """Return CPU statistics."""
+    return _psplatform.cpu_stats()
+
+
+if hasattr(_psplatform, "cpu_freq"):
+
+    def cpu_freq(percpu=False):
+        """Return CPU frequency as a nameduple including current,
+        min and max frequency expressed in Mhz.
+
+        If *percpu* is True and the system supports per-cpu frequency
+        retrieval (Linux only) a list of frequencies is returned for
+        each CPU. If not a list with one element is returned.
+        """
+        ret = _psplatform.cpu_freq()
+        if percpu:
+            return ret
+        else:
+            num_cpus = float(len(ret))
+            if num_cpus == 0:
+                return None
+            elif num_cpus == 1:
+                return ret[0]
+            else:
+                currs, mins, maxs = 0.0, 0.0, 0.0
+                set_none = False
+                for cpu in ret:
+                    currs += cpu.current
+                    # On Linux if /proc/cpuinfo is used min/max are set
+                    # to None.
+                    if LINUX and cpu.min is None:
+                        set_none = True
+                        continue
+                    mins += cpu.min
+                    maxs += cpu.max
+
+                current = currs / num_cpus
+
+                if set_none:
+                    min_ = max_ = None
+                else:
+                    min_ = mins / num_cpus
+                    max_ = maxs / num_cpus
+
+                return _common.scpufreq(current, min_, max_)
+
+    __all__.append("cpu_freq")
+
+
+# =====================================================================
+# --- system memory related functions
+# =====================================================================
+
+
+def virtual_memory():
+    """Return statistics about system memory usage as a namedtuple
+    including the following fields, expressed in bytes:
+
+     - total:
+       total physical memory available.
+
+     - available:
+       the memory that can be given instantly to processes without the
+       system going into swap.
+       This is calculated by summing different memory values depending
+       on the platform and it is supposed to be used to monitor actual
+       memory usage in a cross platform fashion.
+
+     - percent:
+       the percentage usage calculated as (total - available) / total * 100
+
+     - used:
+        memory used, calculated differently depending on the platform and
+        designed for informational purposes only:
+        macOS: active + inactive + wired
+        BSD: active + wired + cached
+        Linux: total - free
+
+     - free:
+       memory not being used at all (zeroed) that is readily available;
+       note that this doesn't reflect the actual memory available
+       (use 'available' instead)
+
+    Platform-specific fields:
+
+     - active (UNIX):
+       memory currently in use or very recently used, and so it is in RAM.
+
+     - inactive (UNIX):
+       memory that is marked as not used.
+
+     - buffers (BSD, Linux):
+       cache for things like file system metadata.
+
+     - cached (BSD, macOS):
+       cache for various things.
+
+     - wired (macOS, BSD):
+       memory that is marked to always stay in RAM. It is never moved to disk.
+
+     - shared (BSD):
+       memory that may be simultaneously accessed by multiple processes.
+
+    The sum of 'used' and 'available' does not necessarily equal total.
+    On Windows 'available' and 'free' are the same.
+    """
+    global _TOTAL_PHYMEM
+    ret = _psplatform.virtual_memory()
+    # cached for later use in Process.memory_percent()
+    _TOTAL_PHYMEM = ret.total
+    return ret
+
+
+def swap_memory():
+    """Return system swap memory statistics as a namedtuple including
+    the following fields:
+
+     - total:   total swap memory in bytes
+     - used:    used swap memory in bytes
+     - free:    free swap memory in bytes
+     - percent: the percentage usage
+     - sin:     no. of bytes the system has swapped in from disk (cumulative)
+     - sout:    no. of bytes the system has swapped out from disk (cumulative)
+
+    'sin' and 'sout' on Windows are meaningless and always set to 0.
+    """
+    return _psplatform.swap_memory()
+
+
+# =====================================================================
+# --- disks/paritions related functions
+# =====================================================================
+
+
+def disk_usage(path):
+    """Return disk usage statistics about the given *path* as a
+    namedtuple including total, used and free space expressed in bytes
+    plus the percentage usage.
+    """
+    return _psplatform.disk_usage(path)
+
+
+def disk_partitions(all=False):
+    """Return mounted partitions as a list of
+    (device, mountpoint, fstype, opts) namedtuple.
+    'opts' field is a raw string separated by commas indicating mount
+    options which may vary depending on the platform.
+
+    If *all* parameter is False return physical devices only and ignore
+    all others.
+    """
+    return _psplatform.disk_partitions(all)
+
+
+def disk_io_counters(perdisk=False, nowrap=True):
+    """Return system disk I/O statistics as a namedtuple including
+    the following fields:
+
+     - read_count:  number of reads
+     - write_count: number of writes
+     - read_bytes:  number of bytes read
+     - write_bytes: number of bytes written
+     - read_time:   time spent reading from disk (in ms)
+     - write_time:  time spent writing to disk (in ms)
+
+    Platform specific:
+
+     - busy_time: (Linux, FreeBSD) time spent doing actual I/Os (in ms)
+     - read_merged_count (Linux): number of merged reads
+     - write_merged_count (Linux): number of merged writes
+
+    If *perdisk* is True return the same information for every
+    physical disk installed on the system as a dictionary
+    with partition names as the keys and the namedtuple
+    described above as the values.
+
+    If *nowrap* is True it detects and adjust the numbers which overflow
+    and wrap (restart from 0) and add "old value" to "new value" so that
+    the returned numbers will always be increasing or remain the same,
+    but never decrease.
+    "disk_io_counters.cache_clear()" can be used to invalidate the
+    cache.
+
+    On recent Windows versions 'diskperf -y' command may need to be
+    executed first otherwise this function won't find any disk.
+    """
+    kwargs = dict(perdisk=perdisk) if LINUX else {}
+    rawdict = _psplatform.disk_io_counters(**kwargs)
+    if not rawdict:
+        return {} if perdisk else None
+    if nowrap:
+        rawdict = _wrap_numbers(rawdict, 'psutil.disk_io_counters')
+    nt = getattr(_psplatform, "sdiskio", _common.sdiskio)
+    if perdisk:
+        for disk, fields in rawdict.items():
+            rawdict[disk] = nt(*fields)
+        return rawdict
+    else:
+        return nt(*[sum(x) for x in zip(*rawdict.values())])
+
+
+disk_io_counters.cache_clear = functools.partial(
+    _wrap_numbers.cache_clear, 'psutil.disk_io_counters')
+disk_io_counters.cache_clear.__doc__ = "Clears nowrap argument cache"
+
+
+# =====================================================================
+# --- network related functions
+# =====================================================================
+
+
+def net_io_counters(pernic=False, nowrap=True):
+    """Return network I/O statistics as a namedtuple including
+    the following fields:
+
+     - bytes_sent:   number of bytes sent
+     - bytes_recv:   number of bytes received
+     - packets_sent: number of packets sent
+     - packets_recv: number of packets received
+     - errin:        total number of errors while receiving
+     - errout:       total number of errors while sending
+     - dropin:       total number of incoming packets which were dropped
+     - dropout:      total number of outgoing packets which were dropped
+                     (always 0 on macOS and BSD)
+
+    If *pernic* is True return the same information for every
+    network interface installed on the system as a dictionary
+    with network interface names as the keys and the namedtuple
+    described above as the values.
+
+    If *nowrap* is True it detects and adjust the numbers which overflow
+    and wrap (restart from 0) and add "old value" to "new value" so that
+    the returned numbers will always be increasing or remain the same,
+    but never decrease.
+    "disk_io_counters.cache_clear()" can be used to invalidate the
+    cache.
+    """
+    rawdict = _psplatform.net_io_counters()
+    if not rawdict:
+        return {} if pernic else None
+    if nowrap:
+        rawdict = _wrap_numbers(rawdict, 'psutil.net_io_counters')
+    if pernic:
+        for nic, fields in rawdict.items():
+            rawdict[nic] = _common.snetio(*fields)
+        return rawdict
+    else:
+        return _common.snetio(*[sum(x) for x in zip(*rawdict.values())])
+
+
+net_io_counters.cache_clear = functools.partial(
+    _wrap_numbers.cache_clear, 'psutil.net_io_counters')
+net_io_counters.cache_clear.__doc__ = "Clears nowrap argument cache"
+
+
+def net_connections(kind='inet'):
+    """Return system-wide socket connections as a list of
+    (fd, family, type, laddr, raddr, status, pid) namedtuples.
+    In case of limited privileges 'fd' and 'pid' may be set to -1
+    and None respectively.
+    The *kind* parameter filters for connections that fit the
+    following criteria:
+
+    +------------+----------------------------------------------------+
+    | Kind Value | Connections using                                  |
+    +------------+----------------------------------------------------+
+    | inet       | IPv4 and IPv6                                      |
+    | inet4      | IPv4                                               |
+    | inet6      | IPv6                                               |
+    | tcp        | TCP                                                |
+    | tcp4       | TCP over IPv4                                      |
+    | tcp6       | TCP over IPv6                                      |
+    | udp        | UDP                                                |
+    | udp4       | UDP over IPv4                                      |
+    | udp6       | UDP over IPv6                                      |
+    | unix       | UNIX socket (both UDP and TCP protocols)           |
+    | all        | the sum of all the possible families and protocols |
+    +------------+----------------------------------------------------+
+
+    On macOS this function requires root privileges.
+    """
+    return _psplatform.net_connections(kind)
+
+
+def net_if_addrs():
+    """Return the addresses associated to each NIC (network interface
+    card) installed on the system as a dictionary whose keys are the
+    NIC names and value is a list of namedtuples for each address
+    assigned to the NIC. Each namedtuple includes 5 fields:
+
+     - family: can be either socket.AF_INET, socket.AF_INET6 or
+               psutil.AF_LINK, which refers to a MAC address.
+     - address: is the primary address and it is always set.
+     - netmask: and 'broadcast' and 'ptp' may be None.
+     - ptp: stands for "point to point" and references the
+            destination address on a point to point interface
+            (typically a VPN).
+     - broadcast: and *ptp* are mutually exclusive.
+
+    Note: you can have more than one address of the same family
+    associated with each interface.
+    """
+    has_enums = sys.version_info >= (3, 4)
+    if has_enums:
+        import socket
+    rawlist = _psplatform.net_if_addrs()
+    rawlist.sort(key=lambda x: x[1])  # sort by family
+    ret = collections.defaultdict(list)
+    for name, fam, addr, mask, broadcast, ptp in rawlist:
+        if has_enums:
+            try:
+                fam = socket.AddressFamily(fam)
+            except ValueError:
+                if WINDOWS and fam == -1:
+                    fam = _psplatform.AF_LINK
+                elif (hasattr(_psplatform, "AF_LINK") and
+                        _psplatform.AF_LINK == fam):
+                    # Linux defines AF_LINK as an alias for AF_PACKET.
+                    # We re-set the family here so that repr(family)
+                    # will show AF_LINK rather than AF_PACKET
+                    fam = _psplatform.AF_LINK
+        if fam == _psplatform.AF_LINK:
+            # The underlying C function may return an incomplete MAC
+            # address in which case we fill it with null bytes, see:
+            # https://github.com/giampaolo/psutil/issues/786
+            separator = ":" if POSIX else "-"
+            while addr.count(separator) < 5:
+                addr += "%s00" % separator
+        ret[name].append(_common.snicaddr(fam, addr, mask, broadcast, ptp))
+    return dict(ret)
+
+
+def net_if_stats():
+    """Return information about each NIC (network interface card)
+    installed on the system as a dictionary whose keys are the
+    NIC names and value is a namedtuple with the following fields:
+
+     - isup: whether the interface is up (bool)
+     - duplex: can be either NIC_DUPLEX_FULL, NIC_DUPLEX_HALF or
+               NIC_DUPLEX_UNKNOWN
+     - speed: the NIC speed expressed in mega bits (MB); if it can't
+              be determined (e.g. 'localhost') it will be set to 0.
+     - mtu: the maximum transmission unit expressed in bytes.
+    """
+    return _psplatform.net_if_stats()
+
+
+# =====================================================================
+# --- sensors
+# =====================================================================
+
+
+# Linux, macOS
+if hasattr(_psplatform, "sensors_temperatures"):
+
+    def sensors_temperatures(fahrenheit=False):
+        """Return hardware temperatures. Each entry is a namedtuple
+        representing a certain hardware sensor (it may be a CPU, an
+        hard disk or something else, depending on the OS and its
+        configuration).
+        All temperatures are expressed in celsius unless *fahrenheit*
+        is set to True.
+        """
+        def convert(n):
+            if n is not None:
+                return (float(n) * 9 / 5) + 32 if fahrenheit else n
+
+        ret = collections.defaultdict(list)
+        rawdict = _psplatform.sensors_temperatures()
+
+        for name, values in rawdict.items():
+            while values:
+                label, current, high, critical = values.pop(0)
+                current = convert(current)
+                high = convert(high)
+                critical = convert(critical)
+
+                if high and not critical:
+                    critical = high
+                elif critical and not high:
+                    high = critical
+
+                ret[name].append(
+                    _common.shwtemp(label, current, high, critical))
+
+        return dict(ret)
+
+    __all__.append("sensors_temperatures")
+
+
+# Linux, macOS
+if hasattr(_psplatform, "sensors_fans"):
+
+    def sensors_fans():
+        """Return fans speed. Each entry is a namedtuple
+        representing a certain hardware sensor.
+        All speed are expressed in RPM (rounds per minute).
+        """
+        return _psplatform.sensors_fans()
+
+    __all__.append("sensors_fans")
+
+
+# Linux, Windows, FreeBSD, macOS
+if hasattr(_psplatform, "sensors_battery"):
+
+    def sensors_battery():
+        """Return battery information. If no battery is installed
+        returns None.
+
+         - percent: battery power left as a percentage.
+         - secsleft: a rough approximation of how many seconds are left
+                     before the battery runs out of power. May be
+                     POWER_TIME_UNLIMITED or POWER_TIME_UNLIMITED.
+         - power_plugged: True if the AC power cable is connected.
+        """
+        return _psplatform.sensors_battery()
+
+    __all__.append("sensors_battery")
+
+
+# =====================================================================
+# --- other system related functions
+# =====================================================================
+
+
+def boot_time():
+    """Return the system boot time expressed in seconds since the epoch."""
+    # Note: we are not caching this because it is subject to
+    # system clock updates.
+    return _psplatform.boot_time()
+
+
+def users():
+    """Return users currently connected on the system as a list of
+    namedtuples including the following fields.
+
+     - user: the name of the user
+     - terminal: the tty or pseudo-tty associated with the user, if any.
+     - host: the host name associated with the entry, if any.
+     - started: the creation time as a floating point number expressed in
+       seconds since the epoch.
+    """
+    return _psplatform.users()
+
+
+# =====================================================================
+# --- Windows services
+# =====================================================================
+
+
+if WINDOWS:
+
+    def win_service_iter():
+        """Return a generator yielding a WindowsService instance for all
+        Windows services installed.
+        """
+        return _psplatform.win_service_iter()
+
+    def win_service_get(name):
+        """Get a Windows service by *name*.
+        Raise NoSuchProcess if no service with such name exists.
+        """
+        return _psplatform.win_service_get(name)
+
+
+# =====================================================================
+
+
+def test():  # pragma: no cover
+    """List info of all currently running processes emulating ps aux
+    output.
+    """
+    today_day = datetime.date.today()
+    templ = "%-10s %5s %4s %7s %7s %-13s %5s %7s  %s"
+    attrs = ['pid', 'memory_percent', 'name', 'cpu_times', 'create_time',
+             'memory_info']
+    if POSIX:
+        attrs.append('uids')
+        attrs.append('terminal')
+    print(templ % ("USER", "PID", "%MEM", "VSZ", "RSS", "TTY", "START", "TIME",
+                   "COMMAND"))
+    for p in process_iter(attrs=attrs, ad_value=''):
+        if p.info['create_time']:
+            ctime = datetime.datetime.fromtimestamp(p.info['create_time'])
+            if ctime.date() == today_day:
+                ctime = ctime.strftime("%H:%M")
+            else:
+                ctime = ctime.strftime("%b%d")
+        else:
+            ctime = ''
+        cputime = time.strftime("%M:%S",
+                                time.localtime(sum(p.info['cpu_times'])))
+        try:
+            user = p.username()
+        except Error:
+            user = ''
+        if WINDOWS and '\\' in user:
+            user = user.split('\\')[1]
+        vms = p.info['memory_info'] and \
+            int(p.info['memory_info'].vms / 1024) or '?'
+        rss = p.info['memory_info'] and \
+            int(p.info['memory_info'].rss / 1024) or '?'
+        memp = p.info['memory_percent'] and \
+            round(p.info['memory_percent'], 1) or '?'
+        print(templ % (
+            user[:10],
+            p.info['pid'],
+            memp,
+            vms,
+            rss,
+            p.info.get('terminal', '') or '?',
+            ctime,
+            cputime,
+            p.info['name'].strip() or '?'))
+
+
+del memoize, memoize_when_activated, division, deprecated_method
+if sys.version_info[0] < 3:
+    del num, x
+
+if __name__ == "__main__":
+    test()
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@@ -0,0 +1,600 @@
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Common objects shared by __init__.py and _ps*.py modules."""
+
+# Note: this module is imported by setup.py so it should not import
+# psutil or third-party modules.
+
+from __future__ import division
+
+import contextlib
+import errno
+import functools
+import os
+import socket
+import stat
+import sys
+import threading
+import warnings
+from collections import defaultdict
+from collections import namedtuple
+from socket import AF_INET
+from socket import SOCK_DGRAM
+from socket import SOCK_STREAM
+try:
+    from socket import AF_INET6
+except ImportError:
+    AF_INET6 = None
+try:
+    from socket import AF_UNIX
+except ImportError:
+    AF_UNIX = None
+
+if sys.version_info >= (3, 4):
+    import enum
+else:
+    enum = None
+
+# can't take it from _common.py as this script is imported by setup.py
+PY3 = sys.version_info[0] == 3
+
+__all__ = [
+    # constants
+    'FREEBSD', 'BSD', 'LINUX', 'NETBSD', 'OPENBSD', 'MACOS', 'OSX', 'POSIX',
+    'SUNOS', 'WINDOWS',
+    'ENCODING', 'ENCODING_ERRS', 'AF_INET6',
+    # connection constants
+    'CONN_CLOSE', 'CONN_CLOSE_WAIT', 'CONN_CLOSING', 'CONN_ESTABLISHED',
+    'CONN_FIN_WAIT1', 'CONN_FIN_WAIT2', 'CONN_LAST_ACK', 'CONN_LISTEN',
+    'CONN_NONE', 'CONN_SYN_RECV', 'CONN_SYN_SENT', 'CONN_TIME_WAIT',
+    # net constants
+    'NIC_DUPLEX_FULL', 'NIC_DUPLEX_HALF', 'NIC_DUPLEX_UNKNOWN',
+    # process status constants
+    'STATUS_DEAD', 'STATUS_DISK_SLEEP', 'STATUS_IDLE', 'STATUS_LOCKED',
+    'STATUS_RUNNING', 'STATUS_SLEEPING', 'STATUS_STOPPED', 'STATUS_SUSPENDED',
+    'STATUS_TRACING_STOP', 'STATUS_WAITING', 'STATUS_WAKE_KILL',
+    'STATUS_WAKING', 'STATUS_ZOMBIE', 'STATUS_PARKED',
+    # named tuples
+    'pconn', 'pcputimes', 'pctxsw', 'pgids', 'pio', 'pionice', 'popenfile',
+    'pthread', 'puids', 'sconn', 'scpustats', 'sdiskio', 'sdiskpart',
+    'sdiskusage', 'snetio', 'snicaddr', 'snicstats', 'sswap', 'suser',
+    # utility functions
+    'conn_tmap', 'deprecated_method', 'isfile_strict', 'memoize',
+    'parse_environ_block', 'path_exists_strict', 'usage_percent',
+    'supports_ipv6', 'sockfam_to_enum', 'socktype_to_enum', "wrap_numbers",
+]
+
+
+# ===================================================================
+# --- OS constants
+# ===================================================================
+
+
+POSIX = os.name == "posix"
+WINDOWS = os.name == "nt"
+LINUX = sys.platform.startswith("linux")
+MACOS = sys.platform.startswith("darwin")
+OSX = MACOS  # deprecated alias
+FREEBSD = sys.platform.startswith("freebsd")
+OPENBSD = sys.platform.startswith("openbsd")
+NETBSD = sys.platform.startswith("netbsd")
+BSD = FREEBSD or OPENBSD or NETBSD
+SUNOS = sys.platform.startswith(("sunos", "solaris"))
+AIX = sys.platform.startswith("aix")
+
+
+# ===================================================================
+# --- API constants
+# ===================================================================
+
+
+# Process.status()
+STATUS_RUNNING = "running"
+STATUS_SLEEPING = "sleeping"
+STATUS_DISK_SLEEP = "disk-sleep"
+STATUS_STOPPED = "stopped"
+STATUS_TRACING_STOP = "tracing-stop"
+STATUS_ZOMBIE = "zombie"
+STATUS_DEAD = "dead"
+STATUS_WAKE_KILL = "wake-kill"
+STATUS_WAKING = "waking"
+STATUS_IDLE = "idle"  # Linux, macOS, FreeBSD
+STATUS_LOCKED = "locked"  # FreeBSD
+STATUS_WAITING = "waiting"  # FreeBSD
+STATUS_SUSPENDED = "suspended"  # NetBSD
+STATUS_PARKED = "parked"  # Linux
+
+# Process.connections() and psutil.net_connections()
+CONN_ESTABLISHED = "ESTABLISHED"
+CONN_SYN_SENT = "SYN_SENT"
+CONN_SYN_RECV = "SYN_RECV"
+CONN_FIN_WAIT1 = "FIN_WAIT1"
+CONN_FIN_WAIT2 = "FIN_WAIT2"
+CONN_TIME_WAIT = "TIME_WAIT"
+CONN_CLOSE = "CLOSE"
+CONN_CLOSE_WAIT = "CLOSE_WAIT"
+CONN_LAST_ACK = "LAST_ACK"
+CONN_LISTEN = "LISTEN"
+CONN_CLOSING = "CLOSING"
+CONN_NONE = "NONE"
+
+# net_if_stats()
+if enum is None:
+    NIC_DUPLEX_FULL = 2
+    NIC_DUPLEX_HALF = 1
+    NIC_DUPLEX_UNKNOWN = 0
+else:
+    class NicDuplex(enum.IntEnum):
+        NIC_DUPLEX_FULL = 2
+        NIC_DUPLEX_HALF = 1
+        NIC_DUPLEX_UNKNOWN = 0
+
+    globals().update(NicDuplex.__members__)
+
+# sensors_battery()
+if enum is None:
+    POWER_TIME_UNKNOWN = -1
+    POWER_TIME_UNLIMITED = -2
+else:
+    class BatteryTime(enum.IntEnum):
+        POWER_TIME_UNKNOWN = -1
+        POWER_TIME_UNLIMITED = -2
+
+    globals().update(BatteryTime.__members__)
+
+# --- others
+
+ENCODING = sys.getfilesystemencoding()
+if not PY3:
+    ENCODING_ERRS = "replace"
+else:
+    try:
+        ENCODING_ERRS = sys.getfilesystemencodeerrors()  # py 3.6
+    except AttributeError:
+        ENCODING_ERRS = "surrogateescape" if POSIX else "replace"
+
+
+# ===================================================================
+# --- namedtuples
+# ===================================================================
+
+# --- for system functions
+
+# psutil.swap_memory()
+sswap = namedtuple('sswap', ['total', 'used', 'free', 'percent', 'sin',
+                             'sout'])
+# psutil.disk_usage()
+sdiskusage = namedtuple('sdiskusage', ['total', 'used', 'free', 'percent'])
+# psutil.disk_io_counters()
+sdiskio = namedtuple('sdiskio', ['read_count', 'write_count',
+                                 'read_bytes', 'write_bytes',
+                                 'read_time', 'write_time'])
+# psutil.disk_partitions()
+sdiskpart = namedtuple('sdiskpart', ['device', 'mountpoint', 'fstype', 'opts'])
+# psutil.net_io_counters()
+snetio = namedtuple('snetio', ['bytes_sent', 'bytes_recv',
+                               'packets_sent', 'packets_recv',
+                               'errin', 'errout',
+                               'dropin', 'dropout'])
+# psutil.users()
+suser = namedtuple('suser', ['name', 'terminal', 'host', 'started', 'pid'])
+# psutil.net_connections()
+sconn = namedtuple('sconn', ['fd', 'family', 'type', 'laddr', 'raddr',
+                             'status', 'pid'])
+# psutil.net_if_addrs()
+snicaddr = namedtuple('snicaddr',
+                      ['family', 'address', 'netmask', 'broadcast', 'ptp'])
+# psutil.net_if_stats()
+snicstats = namedtuple('snicstats', ['isup', 'duplex', 'speed', 'mtu'])
+# psutil.cpu_stats()
+scpustats = namedtuple(
+    'scpustats', ['ctx_switches', 'interrupts', 'soft_interrupts', 'syscalls'])
+# psutil.cpu_freq()
+scpufreq = namedtuple('scpufreq', ['current', 'min', 'max'])
+# psutil.sensors_temperatures()
+shwtemp = namedtuple(
+    'shwtemp', ['label', 'current', 'high', 'critical'])
+# psutil.sensors_battery()
+sbattery = namedtuple('sbattery', ['percent', 'secsleft', 'power_plugged'])
+# psutil.sensors_fans()
+sfan = namedtuple('sfan', ['label', 'current'])
+
+# --- for Process methods
+
+# psutil.Process.cpu_times()
+pcputimes = namedtuple('pcputimes',
+                       ['user', 'system', 'children_user', 'children_system'])
+# psutil.Process.open_files()
+popenfile = namedtuple('popenfile', ['path', 'fd'])
+# psutil.Process.threads()
+pthread = namedtuple('pthread', ['id', 'user_time', 'system_time'])
+# psutil.Process.uids()
+puids = namedtuple('puids', ['real', 'effective', 'saved'])
+# psutil.Process.gids()
+pgids = namedtuple('pgids', ['real', 'effective', 'saved'])
+# psutil.Process.io_counters()
+pio = namedtuple('pio', ['read_count', 'write_count',
+                         'read_bytes', 'write_bytes'])
+# psutil.Process.ionice()
+pionice = namedtuple('pionice', ['ioclass', 'value'])
+# psutil.Process.ctx_switches()
+pctxsw = namedtuple('pctxsw', ['voluntary', 'involuntary'])
+# psutil.Process.connections()
+pconn = namedtuple('pconn', ['fd', 'family', 'type', 'laddr', 'raddr',
+                             'status'])
+
+# psutil.connections() and psutil.Process.connections()
+addr = namedtuple('addr', ['ip', 'port'])
+
+
+# ===================================================================
+# --- Process.connections() 'kind' parameter mapping
+# ===================================================================
+
+
+conn_tmap = {
+    "all": ([AF_INET, AF_INET6, AF_UNIX], [SOCK_STREAM, SOCK_DGRAM]),
+    "tcp": ([AF_INET, AF_INET6], [SOCK_STREAM]),
+    "tcp4": ([AF_INET], [SOCK_STREAM]),
+    "udp": ([AF_INET, AF_INET6], [SOCK_DGRAM]),
+    "udp4": ([AF_INET], [SOCK_DGRAM]),
+    "inet": ([AF_INET, AF_INET6], [SOCK_STREAM, SOCK_DGRAM]),
+    "inet4": ([AF_INET], [SOCK_STREAM, SOCK_DGRAM]),
+    "inet6": ([AF_INET6], [SOCK_STREAM, SOCK_DGRAM]),
+}
+
+if AF_INET6 is not None:
+    conn_tmap.update({
+        "tcp6": ([AF_INET6], [SOCK_STREAM]),
+        "udp6": ([AF_INET6], [SOCK_DGRAM]),
+    })
+
+if AF_UNIX is not None:
+    conn_tmap.update({
+        "unix": ([AF_UNIX], [SOCK_STREAM, SOCK_DGRAM]),
+    })
+
+del AF_INET, AF_UNIX, SOCK_STREAM, SOCK_DGRAM
+
+
+# ===================================================================
+# --- utils
+# ===================================================================
+
+
+def usage_percent(used, total, round_=None):
+    """Calculate percentage usage of 'used' against 'total'."""
+    try:
+        ret = (used / total) * 100
+    except ZeroDivisionError:
+        ret = 0.0 if isinstance(used, float) or isinstance(total, float) else 0
+    if round_ is not None:
+        return round(ret, round_)
+    else:
+        return ret
+
+
+def memoize(fun):
+    """A simple memoize decorator for functions supporting (hashable)
+    positional arguments.
+    It also provides a cache_clear() function for clearing the cache:
+
+    >>> @memoize
+    ... def foo()
+    ...     return 1
+        ...
+    >>> foo()
+    1
+    >>> foo.cache_clear()
+    >>>
+    """
+    @functools.wraps(fun)
+    def wrapper(*args, **kwargs):
+        key = (args, frozenset(sorted(kwargs.items())))
+        try:
+            return cache[key]
+        except KeyError:
+            ret = cache[key] = fun(*args, **kwargs)
+            return ret
+
+    def cache_clear():
+        """Clear cache."""
+        cache.clear()
+
+    cache = {}
+    wrapper.cache_clear = cache_clear
+    return wrapper
+
+
+def memoize_when_activated(fun):
+    """A memoize decorator which is disabled by default. It can be
+    activated and deactivated on request.
+    For efficiency reasons it can be used only against class methods
+    accepting no arguments.
+
+    >>> class Foo:
+    ...     @memoize
+    ...     def foo()
+    ...         print(1)
+    ...
+    >>> f = Foo()
+    >>> # deactivated (default)
+    >>> foo()
+    1
+    >>> foo()
+    1
+    >>>
+    >>> # activated
+    >>> foo.cache_activate(self)
+    >>> foo()
+    1
+    >>> foo()
+    >>> foo()
+    >>>
+    """
+    @functools.wraps(fun)
+    def wrapper(self):
+        try:
+            # case 1: we previously entered oneshot() ctx
+            ret = self._cache[fun]
+        except AttributeError:
+            # case 2: we never entered oneshot() ctx
+            return fun(self)
+        except KeyError:
+            # case 3: we entered oneshot() ctx but there's no cache
+            # for this entry yet
+            ret = self._cache[fun] = fun(self)
+        return ret
+
+    def cache_activate(proc):
+        """Activate cache. Expects a Process instance. Cache will be
+        stored as a "_cache" instance attribute."""
+        proc._cache = {}
+
+    def cache_deactivate(proc):
+        """Deactivate and clear cache."""
+        try:
+            del proc._cache
+        except AttributeError:
+            pass
+
+    wrapper.cache_activate = cache_activate
+    wrapper.cache_deactivate = cache_deactivate
+    return wrapper
+
+
+def isfile_strict(path):
+    """Same as os.path.isfile() but does not swallow EACCES / EPERM
+    exceptions, see:
+    http://mail.python.org/pipermail/python-dev/2012-June/120787.html
+    """
+    try:
+        st = os.stat(path)
+    except OSError as err:
+        if err.errno in (errno.EPERM, errno.EACCES):
+            raise
+        return False
+    else:
+        return stat.S_ISREG(st.st_mode)
+
+
+def path_exists_strict(path):
+    """Same as os.path.exists() but does not swallow EACCES / EPERM
+    exceptions, see:
+    http://mail.python.org/pipermail/python-dev/2012-June/120787.html
+    """
+    try:
+        os.stat(path)
+    except OSError as err:
+        if err.errno in (errno.EPERM, errno.EACCES):
+            raise
+        return False
+    else:
+        return True
+
+
+@memoize
+def supports_ipv6():
+    """Return True if IPv6 is supported on this platform."""
+    if not socket.has_ipv6 or AF_INET6 is None:
+        return False
+    try:
+        sock = socket.socket(AF_INET6, socket.SOCK_STREAM)
+        with contextlib.closing(sock):
+            sock.bind(("::1", 0))
+        return True
+    except socket.error:
+        return False
+
+
+def parse_environ_block(data):
+    """Parse a C environ block of environment variables into a dictionary."""
+    # The block is usually raw data from the target process.  It might contain
+    # trailing garbage and lines that do not look like assignments.
+    ret = {}
+    pos = 0
+
+    # localize global variable to speed up access.
+    WINDOWS_ = WINDOWS
+    while True:
+        next_pos = data.find("\0", pos)
+        # nul byte at the beginning or double nul byte means finish
+        if next_pos <= pos:
+            break
+        # there might not be an equals sign
+        equal_pos = data.find("=", pos, next_pos)
+        if equal_pos > pos:
+            key = data[pos:equal_pos]
+            value = data[equal_pos + 1:next_pos]
+            # Windows expects environment variables to be uppercase only
+            if WINDOWS_:
+                key = key.upper()
+            ret[key] = value
+        pos = next_pos + 1
+
+    return ret
+
+
+def sockfam_to_enum(num):
+    """Convert a numeric socket family value to an IntEnum member.
+    If it's not a known member, return the numeric value itself.
+    """
+    if enum is None:
+        return num
+    else:  # pragma: no cover
+        try:
+            return socket.AddressFamily(num)
+        except (ValueError, AttributeError):
+            return num
+
+
+def socktype_to_enum(num):
+    """Convert a numeric socket type value to an IntEnum member.
+    If it's not a known member, return the numeric value itself.
+    """
+    if enum is None:
+        return num
+    else:  # pragma: no cover
+        try:
+            return socket.AddressType(num)
+        except (ValueError, AttributeError):
+            return num
+
+
+def deprecated_method(replacement):
+    """A decorator which can be used to mark a method as deprecated
+    'replcement' is the method name which will be called instead.
+    """
+    def outer(fun):
+        msg = "%s() is deprecated and will be removed; use %s() instead" % (
+            fun.__name__, replacement)
+        if fun.__doc__ is None:
+            fun.__doc__ = msg
+
+        @functools.wraps(fun)
+        def inner(self, *args, **kwargs):
+            warnings.warn(msg, category=DeprecationWarning, stacklevel=2)
+            return getattr(self, replacement)(*args, **kwargs)
+        return inner
+    return outer
+
+
+class _WrapNumbers:
+    """Watches numbers so that they don't overflow and wrap
+    (reset to zero).
+    """
+
+    def __init__(self):
+        self.lock = threading.Lock()
+        self.cache = {}
+        self.reminders = {}
+        self.reminder_keys = {}
+
+    def _add_dict(self, input_dict, name):
+        assert name not in self.cache
+        assert name not in self.reminders
+        assert name not in self.reminder_keys
+        self.cache[name] = input_dict
+        self.reminders[name] = defaultdict(int)
+        self.reminder_keys[name] = defaultdict(set)
+
+    def _remove_dead_reminders(self, input_dict, name):
+        """In case the number of keys changed between calls (e.g. a
+        disk disappears) this removes the entry from self.reminders.
+        """
+        old_dict = self.cache[name]
+        gone_keys = set(old_dict.keys()) - set(input_dict.keys())
+        for gone_key in gone_keys:
+            for remkey in self.reminder_keys[name][gone_key]:
+                del self.reminders[name][remkey]
+            del self.reminder_keys[name][gone_key]
+
+    def run(self, input_dict, name):
+        """Cache dict and sum numbers which overflow and wrap.
+        Return an updated copy of `input_dict`
+        """
+        if name not in self.cache:
+            # This was the first call.
+            self._add_dict(input_dict, name)
+            return input_dict
+
+        self._remove_dead_reminders(input_dict, name)
+
+        old_dict = self.cache[name]
+        new_dict = {}
+        for key in input_dict.keys():
+            input_tuple = input_dict[key]
+            try:
+                old_tuple = old_dict[key]
+            except KeyError:
+                # The input dict has a new key (e.g. a new disk or NIC)
+                # which didn't exist in the previous call.
+                new_dict[key] = input_tuple
+                continue
+
+            bits = []
+            for i in range(len(input_tuple)):
+                input_value = input_tuple[i]
+                old_value = old_tuple[i]
+                remkey = (key, i)
+                if input_value < old_value:
+                    # it wrapped!
+                    self.reminders[name][remkey] += old_value
+                    self.reminder_keys[name][key].add(remkey)
+                bits.append(input_value + self.reminders[name][remkey])
+
+            new_dict[key] = tuple(bits)
+
+        self.cache[name] = input_dict
+        return new_dict
+
+    def cache_clear(self, name=None):
+        """Clear the internal cache, optionally only for function 'name'."""
+        with self.lock:
+            if name is None:
+                self.cache.clear()
+                self.reminders.clear()
+                self.reminder_keys.clear()
+            else:
+                self.cache.pop(name, None)
+                self.reminders.pop(name, None)
+                self.reminder_keys.pop(name, None)
+
+    def cache_info(self):
+        """Return internal cache dicts as a tuple of 3 elements."""
+        with self.lock:
+            return (self.cache, self.reminders, self.reminder_keys)
+
+
+def wrap_numbers(input_dict, name):
+    """Given an `input_dict` and a function `name`, adjust the numbers
+    which "wrap" (restart from zero) across different calls by adding
+    "old value" to "new value" and return an updated dict.
+    """
+    with _wn.lock:
+        return _wn.run(input_dict, name)
+
+
+_wn = _WrapNumbers()
+wrap_numbers.cache_clear = _wn.cache_clear
+wrap_numbers.cache_info = _wn.cache_info
+
+
+def open_binary(fname, **kwargs):
+    return open(fname, "rb", **kwargs)
+
+
+def open_text(fname, **kwargs):
+    """On Python 3 opens a file in text mode by using fs encoding and
+    a proper en/decoding errors handler.
+    On Python 2 this is just an alias for open(name, 'rt').
+    """
+    if PY3:
+        # See:
+        # https://github.com/giampaolo/psutil/issues/675
+        # https://github.com/giampaolo/psutil/pull/733
+        kwargs.setdefault('encoding', ENCODING)
+        kwargs.setdefault('errors', ENCODING_ERRS)
+    return open(fname, "rt", **kwargs)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_compat.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_compat.py
new file mode 100644
index 00000000..08aefe4b
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_compat.py
@@ -0,0 +1,241 @@
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Module which provides compatibility with older Python versions."""
+
+import collections
+import functools
+import os
+import sys
+
+__all__ = ["PY3", "long", "xrange", "unicode", "basestring", "u", "b",
+           "lru_cache", "which"]
+
+PY3 = sys.version_info[0] == 3
+
+if PY3:
+    long = int
+    xrange = range
+    unicode = str
+    basestring = str
+
+    def u(s):
+        return s
+
+    def b(s):
+        return s.encode("latin-1")
+else:
+    long = long
+    xrange = xrange
+    unicode = unicode
+    basestring = basestring
+
+    def u(s):
+        return unicode(s, "unicode_escape")
+
+    def b(s):
+        return s
+
+
+# --- stdlib additions
+
+
+# py 3.2 functools.lru_cache
+# Taken from: http://code.activestate.com/recipes/578078
+# Credit: Raymond Hettinger
+try:
+    from functools import lru_cache
+except ImportError:
+    try:
+        from threading import RLock
+    except ImportError:
+        from dummy_threading import RLock
+
+    _CacheInfo = collections.namedtuple(
+        "CacheInfo", ["hits", "misses", "maxsize", "currsize"])
+
+    class _HashedSeq(list):
+        __slots__ = 'hashvalue'
+
+        def __init__(self, tup, hash=hash):
+            self[:] = tup
+            self.hashvalue = hash(tup)
+
+        def __hash__(self):
+            return self.hashvalue
+
+    def _make_key(args, kwds, typed,
+                  kwd_mark=(object(), ),
+                  fasttypes=set((int, str, frozenset, type(None))),
+                  sorted=sorted, tuple=tuple, type=type, len=len):
+        key = args
+        if kwds:
+            sorted_items = sorted(kwds.items())
+            key += kwd_mark
+            for item in sorted_items:
+                key += item
+        if typed:
+            key += tuple(type(v) for v in args)
+            if kwds:
+                key += tuple(type(v) for k, v in sorted_items)
+        elif len(key) == 1 and type(key[0]) in fasttypes:
+            return key[0]
+        return _HashedSeq(key)
+
+    def lru_cache(maxsize=100, typed=False):
+        """Least-recently-used cache decorator, see:
+        http://docs.python.org/3/library/functools.html#functools.lru_cache
+        """
+        def decorating_function(user_function):
+            cache = dict()
+            stats = [0, 0]
+            HITS, MISSES = 0, 1
+            make_key = _make_key
+            cache_get = cache.get
+            _len = len
+            lock = RLock()
+            root = []
+            root[:] = [root, root, None, None]
+            nonlocal_root = [root]
+            PREV, NEXT, KEY, RESULT = 0, 1, 2, 3
+            if maxsize == 0:
+                def wrapper(*args, **kwds):
+                    result = user_function(*args, **kwds)
+                    stats[MISSES] += 1
+                    return result
+            elif maxsize is None:
+                def wrapper(*args, **kwds):
+                    key = make_key(args, kwds, typed)
+                    result = cache_get(key, root)
+                    if result is not root:
+                        stats[HITS] += 1
+                        return result
+                    result = user_function(*args, **kwds)
+                    cache[key] = result
+                    stats[MISSES] += 1
+                    return result
+            else:
+                def wrapper(*args, **kwds):
+                    if kwds or typed:
+                        key = make_key(args, kwds, typed)
+                    else:
+                        key = args
+                    lock.acquire()
+                    try:
+                        link = cache_get(key)
+                        if link is not None:
+                            root, = nonlocal_root
+                            link_prev, link_next, key, result = link
+                            link_prev[NEXT] = link_next
+                            link_next[PREV] = link_prev
+                            last = root[PREV]
+                            last[NEXT] = root[PREV] = link
+                            link[PREV] = last
+                            link[NEXT] = root
+                            stats[HITS] += 1
+                            return result
+                    finally:
+                        lock.release()
+                    result = user_function(*args, **kwds)
+                    lock.acquire()
+                    try:
+                        root, = nonlocal_root
+                        if key in cache:
+                            pass
+                        elif _len(cache) >= maxsize:
+                            oldroot = root
+                            oldroot[KEY] = key
+                            oldroot[RESULT] = result
+                            root = nonlocal_root[0] = oldroot[NEXT]
+                            oldkey = root[KEY]
+                            root[KEY] = root[RESULT] = None
+                            del cache[oldkey]
+                            cache[key] = oldroot
+                        else:
+                            last = root[PREV]
+                            link = [last, root, key, result]
+                            last[NEXT] = root[PREV] = cache[key] = link
+                        stats[MISSES] += 1
+                    finally:
+                        lock.release()
+                    return result
+
+            def cache_info():
+                """Report cache statistics"""
+                lock.acquire()
+                try:
+                    return _CacheInfo(stats[HITS], stats[MISSES], maxsize,
+                                      len(cache))
+                finally:
+                    lock.release()
+
+            def cache_clear():
+                """Clear the cache and cache statistics"""
+                lock.acquire()
+                try:
+                    cache.clear()
+                    root = nonlocal_root[0]
+                    root[:] = [root, root, None, None]
+                    stats[:] = [0, 0]
+                finally:
+                    lock.release()
+
+            wrapper.__wrapped__ = user_function
+            wrapper.cache_info = cache_info
+            wrapper.cache_clear = cache_clear
+            return functools.update_wrapper(wrapper, user_function)
+
+        return decorating_function
+
+
+# python 3.3
+try:
+    from shutil import which
+except ImportError:
+    def which(cmd, mode=os.F_OK | os.X_OK, path=None):
+        """Given a command, mode, and a PATH string, return the path which
+        conforms to the given mode on the PATH, or None if there is no such
+        file.
+
+        `mode` defaults to os.F_OK | os.X_OK. `path` defaults to the result
+        of os.environ.get("PATH"), or can be overridden with a custom search
+        path.
+        """
+        def _access_check(fn, mode):
+            return (os.path.exists(fn) and os.access(fn, mode) and
+                    not os.path.isdir(fn))
+
+        if os.path.dirname(cmd):
+            if _access_check(cmd, mode):
+                return cmd
+            return None
+
+        if path is None:
+            path = os.environ.get("PATH", os.defpath)
+        if not path:
+            return None
+        path = path.split(os.pathsep)
+
+        if sys.platform == "win32":
+            if os.curdir not in path:
+                path.insert(0, os.curdir)
+
+            pathext = os.environ.get("PATHEXT", "").split(os.pathsep)
+            if any(cmd.lower().endswith(ext.lower()) for ext in pathext):
+                files = [cmd]
+            else:
+                files = [cmd + ext for ext in pathext]
+        else:
+            files = [cmd]
+
+        seen = set()
+        for dir in path:
+            normdir = os.path.normcase(dir)
+            if normdir not in seen:
+                seen.add(normdir)
+                for thefile in files:
+                    name = os.path.join(dir, thefile)
+                    if _access_check(name, mode):
+                        return name
+        return None
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_psaix.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_psaix.py
new file mode 100644
index 00000000..ff086b90
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_psaix.py
@@ -0,0 +1,581 @@
+# Copyright (c) 2009, Giampaolo Rodola'
+# Copyright (c) 2017, Arnon Yaari
+# All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""AIX platform implementation."""
+
+import errno
+import glob
+import os
+import re
+import subprocess
+import sys
+from collections import namedtuple
+from socket import AF_INET
+
+from . import _common
+from . import _psposix
+from . import _psutil_aix as cext
+from . import _psutil_posix as cext_posix
+from ._common import AF_INET6
+from ._common import memoize_when_activated
+from ._common import NIC_DUPLEX_FULL
+from ._common import NIC_DUPLEX_HALF
+from ._common import NIC_DUPLEX_UNKNOWN
+from ._common import sockfam_to_enum
+from ._common import socktype_to_enum
+from ._common import usage_percent
+from ._compat import PY3
+
+
+__extra__all__ = ["PROCFS_PATH"]
+
+
+# =====================================================================
+# --- globals
+# =====================================================================
+
+
+HAS_THREADS = hasattr(cext, "proc_threads")
+HAS_NET_IO_COUNTERS = hasattr(cext, "net_io_counters")
+HAS_PROC_IO_COUNTERS = hasattr(cext, "proc_io_counters")
+
+PAGE_SIZE = os.sysconf('SC_PAGE_SIZE')
+AF_LINK = cext_posix.AF_LINK
+
+PROC_STATUSES = {
+    cext.SIDL: _common.STATUS_IDLE,
+    cext.SZOMB: _common.STATUS_ZOMBIE,
+    cext.SACTIVE: _common.STATUS_RUNNING,
+    cext.SSWAP: _common.STATUS_RUNNING,      # TODO what status is this?
+    cext.SSTOP: _common.STATUS_STOPPED,
+}
+
+TCP_STATUSES = {
+    cext.TCPS_ESTABLISHED: _common.CONN_ESTABLISHED,
+    cext.TCPS_SYN_SENT: _common.CONN_SYN_SENT,
+    cext.TCPS_SYN_RCVD: _common.CONN_SYN_RECV,
+    cext.TCPS_FIN_WAIT_1: _common.CONN_FIN_WAIT1,
+    cext.TCPS_FIN_WAIT_2: _common.CONN_FIN_WAIT2,
+    cext.TCPS_TIME_WAIT: _common.CONN_TIME_WAIT,
+    cext.TCPS_CLOSED: _common.CONN_CLOSE,
+    cext.TCPS_CLOSE_WAIT: _common.CONN_CLOSE_WAIT,
+    cext.TCPS_LAST_ACK: _common.CONN_LAST_ACK,
+    cext.TCPS_LISTEN: _common.CONN_LISTEN,
+    cext.TCPS_CLOSING: _common.CONN_CLOSING,
+    cext.PSUTIL_CONN_NONE: _common.CONN_NONE,
+}
+
+proc_info_map = dict(
+    ppid=0,
+    rss=1,
+    vms=2,
+    create_time=3,
+    nice=4,
+    num_threads=5,
+    status=6,
+    ttynr=7)
+
+# These objects get set on "import psutil" from the __init__.py
+# file, see: https://github.com/giampaolo/psutil/issues/1402
+NoSuchProcess = None
+ZombieProcess = None
+AccessDenied = None
+TimeoutExpired = None
+
+
+# =====================================================================
+# --- named tuples
+# =====================================================================
+
+
+# psutil.Process.memory_info()
+pmem = namedtuple('pmem', ['rss', 'vms'])
+# psutil.Process.memory_full_info()
+pfullmem = pmem
+# psutil.Process.cpu_times()
+scputimes = namedtuple('scputimes', ['user', 'system', 'idle', 'iowait'])
+# psutil.virtual_memory()
+svmem = namedtuple('svmem', ['total', 'available', 'percent', 'used', 'free'])
+
+
+# =====================================================================
+# --- utils
+# =====================================================================
+
+
+def get_procfs_path():
+    """Return updated psutil.PROCFS_PATH constant."""
+    return sys.modules['psutil'].PROCFS_PATH
+
+
+# =====================================================================
+# --- memory
+# =====================================================================
+
+
+def virtual_memory():
+    total, avail, free, pinned, inuse = cext.virtual_mem()
+    percent = usage_percent((total - avail), total, round_=1)
+    return svmem(total, avail, percent, inuse, free)
+
+
+def swap_memory():
+    """Swap system memory as a (total, used, free, sin, sout) tuple."""
+    total, free, sin, sout = cext.swap_mem()
+    used = total - free
+    percent = usage_percent(used, total, round_=1)
+    return _common.sswap(total, used, free, percent, sin, sout)
+
+
+# =====================================================================
+# --- CPU
+# =====================================================================
+
+
+def cpu_times():
+    """Return system-wide CPU times as a named tuple"""
+    ret = cext.per_cpu_times()
+    return scputimes(*[sum(x) for x in zip(*ret)])
+
+
+def per_cpu_times():
+    """Return system per-CPU times as a list of named tuples"""
+    ret = cext.per_cpu_times()
+    return [scputimes(*x) for x in ret]
+
+
+def cpu_count_logical():
+    """Return the number of logical CPUs in the system."""
+    try:
+        return os.sysconf("SC_NPROCESSORS_ONLN")
+    except ValueError:
+        # mimic os.cpu_count() behavior
+        return None
+
+
+def cpu_count_physical():
+    cmd = "lsdev -Cc processor"
+    p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE,
+                         stderr=subprocess.PIPE)
+    stdout, stderr = p.communicate()
+    if PY3:
+        stdout, stderr = [x.decode(sys.stdout.encoding)
+                          for x in (stdout, stderr)]
+    if p.returncode != 0:
+        raise RuntimeError("%r command error\n%s" % (cmd, stderr))
+    processors = stdout.strip().splitlines()
+    return len(processors) or None
+
+
+def cpu_stats():
+    """Return various CPU stats as a named tuple."""
+    ctx_switches, interrupts, soft_interrupts, syscalls = cext.cpu_stats()
+    return _common.scpustats(
+        ctx_switches, interrupts, soft_interrupts, syscalls)
+
+
+# =====================================================================
+# --- disks
+# =====================================================================
+
+
+disk_io_counters = cext.disk_io_counters
+disk_usage = _psposix.disk_usage
+
+
+def disk_partitions(all=False):
+    """Return system disk partitions."""
+    # TODO - the filtering logic should be better checked so that
+    # it tries to reflect 'df' as much as possible
+    retlist = []
+    partitions = cext.disk_partitions()
+    for partition in partitions:
+        device, mountpoint, fstype, opts = partition
+        if device == 'none':
+            device = ''
+        if not all:
+            # Differently from, say, Linux, we don't have a list of
+            # common fs types so the best we can do, AFAIK, is to
+            # filter by filesystem having a total size > 0.
+            if not disk_usage(mountpoint).total:
+                continue
+        ntuple = _common.sdiskpart(device, mountpoint, fstype, opts)
+        retlist.append(ntuple)
+    return retlist
+
+
+# =====================================================================
+# --- network
+# =====================================================================
+
+
+net_if_addrs = cext_posix.net_if_addrs
+
+if HAS_NET_IO_COUNTERS:
+    net_io_counters = cext.net_io_counters
+
+
+def net_connections(kind, _pid=-1):
+    """Return socket connections.  If pid == -1 return system-wide
+    connections (as opposed to connections opened by one process only).
+    """
+    cmap = _common.conn_tmap
+    if kind not in cmap:
+        raise ValueError("invalid %r kind argument; choose between %s"
+                         % (kind, ', '.join([repr(x) for x in cmap])))
+    families, types = _common.conn_tmap[kind]
+    rawlist = cext.net_connections(_pid)
+    ret = set()
+    for item in rawlist:
+        fd, fam, type_, laddr, raddr, status, pid = item
+        if fam not in families:
+            continue
+        if type_ not in types:
+            continue
+        status = TCP_STATUSES[status]
+        if fam in (AF_INET, AF_INET6):
+            if laddr:
+                laddr = _common.addr(*laddr)
+            if raddr:
+                raddr = _common.addr(*raddr)
+        fam = sockfam_to_enum(fam)
+        type_ = socktype_to_enum(type_)
+        if _pid == -1:
+            nt = _common.sconn(fd, fam, type_, laddr, raddr, status, pid)
+        else:
+            nt = _common.pconn(fd, fam, type_, laddr, raddr, status)
+        ret.add(nt)
+    return list(ret)
+
+
+def net_if_stats():
+    """Get NIC stats (isup, duplex, speed, mtu)."""
+    duplex_map = {"Full": NIC_DUPLEX_FULL,
+                  "Half": NIC_DUPLEX_HALF}
+    names = set([x[0] for x in net_if_addrs()])
+    ret = {}
+    for name in names:
+        isup, mtu = cext.net_if_stats(name)
+
+        # try to get speed and duplex
+        # TODO: rewrite this in C (entstat forks, so use truss -f to follow.
+        # looks like it is using an undocumented ioctl?)
+        duplex = ""
+        speed = 0
+        p = subprocess.Popen(["/usr/bin/entstat", "-d", name],
+                             stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        stdout, stderr = p.communicate()
+        if PY3:
+            stdout, stderr = [x.decode(sys.stdout.encoding)
+                              for x in (stdout, stderr)]
+        if p.returncode == 0:
+            re_result = re.search(
+                r"Running: (\d+) Mbps.*?(\w+) Duplex", stdout)
+            if re_result is not None:
+                speed = int(re_result.group(1))
+                duplex = re_result.group(2)
+
+        duplex = duplex_map.get(duplex, NIC_DUPLEX_UNKNOWN)
+        ret[name] = _common.snicstats(isup, duplex, speed, mtu)
+    return ret
+
+
+# =====================================================================
+# --- other system functions
+# =====================================================================
+
+
+def boot_time():
+    """The system boot time expressed in seconds since the epoch."""
+    return cext.boot_time()
+
+
+def users():
+    """Return currently connected users as a list of namedtuples."""
+    retlist = []
+    rawlist = cext.users()
+    localhost = (':0.0', ':0')
+    for item in rawlist:
+        user, tty, hostname, tstamp, user_process, pid = item
+        # note: the underlying C function includes entries about
+        # system boot, run level and others.  We might want
+        # to use them in the future.
+        if not user_process:
+            continue
+        if hostname in localhost:
+            hostname = 'localhost'
+        nt = _common.suser(user, tty, hostname, tstamp, pid)
+        retlist.append(nt)
+    return retlist
+
+
+# =====================================================================
+# --- processes
+# =====================================================================
+
+
+def pids():
+    """Returns a list of PIDs currently running on the system."""
+    return [int(x) for x in os.listdir(get_procfs_path()) if x.isdigit()]
+
+
+def pid_exists(pid):
+    """Check for the existence of a unix pid."""
+    return os.path.exists(os.path.join(get_procfs_path(), str(pid), "psinfo"))
+
+
+def wrap_exceptions(fun):
+    """Call callable into a try/except clause and translate ENOENT,
+    EACCES and EPERM in NoSuchProcess or AccessDenied exceptions.
+    """
+
+    def wrapper(self, *args, **kwargs):
+        try:
+            return fun(self, *args, **kwargs)
+        except EnvironmentError as err:
+            # support for private module import
+            if (NoSuchProcess is None or AccessDenied is None or
+                    ZombieProcess is None):
+                raise
+            # ENOENT (no such file or directory) gets raised on open().
+            # ESRCH (no such process) can get raised on read() if
+            # process is gone in meantime.
+            if err.errno in (errno.ENOENT, errno.ESRCH):
+                if not pid_exists(self.pid):
+                    raise NoSuchProcess(self.pid, self._name)
+                else:
+                    raise ZombieProcess(self.pid, self._name, self._ppid)
+            if err.errno in (errno.EPERM, errno.EACCES):
+                raise AccessDenied(self.pid, self._name)
+            raise
+    return wrapper
+
+
+class Process(object):
+    """Wrapper class around underlying C implementation."""
+
+    __slots__ = ["pid", "_name", "_ppid", "_procfs_path", "_cache"]
+
+    def __init__(self, pid):
+        self.pid = pid
+        self._name = None
+        self._ppid = None
+        self._procfs_path = get_procfs_path()
+
+    def oneshot_enter(self):
+        self._proc_name_and_args.cache_activate(self)
+        self._proc_basic_info.cache_activate(self)
+        self._proc_cred.cache_activate(self)
+
+    def oneshot_exit(self):
+        self._proc_name_and_args.cache_deactivate(self)
+        self._proc_basic_info.cache_deactivate(self)
+        self._proc_cred.cache_deactivate(self)
+
+    @wrap_exceptions
+    @memoize_when_activated
+    def _proc_name_and_args(self):
+        return cext.proc_name_and_args(self.pid, self._procfs_path)
+
+    @wrap_exceptions
+    @memoize_when_activated
+    def _proc_basic_info(self):
+        return cext.proc_basic_info(self.pid, self._procfs_path)
+
+    @wrap_exceptions
+    @memoize_when_activated
+    def _proc_cred(self):
+        return cext.proc_cred(self.pid, self._procfs_path)
+
+    @wrap_exceptions
+    def name(self):
+        if self.pid == 0:
+            return "swapper"
+        # note: this is limited to 15 characters
+        return self._proc_name_and_args()[0].rstrip("\x00")
+
+    @wrap_exceptions
+    def exe(self):
+        # there is no way to get executable path in AIX other than to guess,
+        # and guessing is more complex than what's in the wrapping class
+        exe = self.cmdline()[0]
+        if os.path.sep in exe:
+            # relative or absolute path
+            if not os.path.isabs(exe):
+                # if cwd has changed, we're out of luck - this may be wrong!
+                exe = os.path.abspath(os.path.join(self.cwd(), exe))
+            if (os.path.isabs(exe) and
+               os.path.isfile(exe) and
+               os.access(exe, os.X_OK)):
+                return exe
+            # not found, move to search in PATH using basename only
+            exe = os.path.basename(exe)
+        # search for exe name PATH
+        for path in os.environ["PATH"].split(":"):
+            possible_exe = os.path.abspath(os.path.join(path, exe))
+            if (os.path.isfile(possible_exe) and
+               os.access(possible_exe, os.X_OK)):
+                return possible_exe
+        return ''
+
+    @wrap_exceptions
+    def cmdline(self):
+        return self._proc_name_and_args()[1].split(' ')
+
+    @wrap_exceptions
+    def create_time(self):
+        return self._proc_basic_info()[proc_info_map['create_time']]
+
+    @wrap_exceptions
+    def num_threads(self):
+        return self._proc_basic_info()[proc_info_map['num_threads']]
+
+    if HAS_THREADS:
+        @wrap_exceptions
+        def threads(self):
+            rawlist = cext.proc_threads(self.pid)
+            retlist = []
+            for thread_id, utime, stime in rawlist:
+                ntuple = _common.pthread(thread_id, utime, stime)
+                retlist.append(ntuple)
+            # The underlying C implementation retrieves all OS threads
+            # and filters them by PID.  At this point we can't tell whether
+            # an empty list means there were no connections for process or
+            # process is no longer active so we force NSP in case the PID
+            # is no longer there.
+            if not retlist:
+                # will raise NSP if process is gone
+                os.stat('%s/%s' % (self._procfs_path, self.pid))
+            return retlist
+
+    @wrap_exceptions
+    def connections(self, kind='inet'):
+        ret = net_connections(kind, _pid=self.pid)
+        # The underlying C implementation retrieves all OS connections
+        # and filters them by PID.  At this point we can't tell whether
+        # an empty list means there were no connections for process or
+        # process is no longer active so we force NSP in case the PID
+        # is no longer there.
+        if not ret:
+            # will raise NSP if process is gone
+            os.stat('%s/%s' % (self._procfs_path, self.pid))
+        return ret
+
+    @wrap_exceptions
+    def nice_get(self):
+        return cext_posix.getpriority(self.pid)
+
+    @wrap_exceptions
+    def nice_set(self, value):
+        return cext_posix.setpriority(self.pid, value)
+
+    @wrap_exceptions
+    def ppid(self):
+        self._ppid = self._proc_basic_info()[proc_info_map['ppid']]
+        return self._ppid
+
+    @wrap_exceptions
+    def uids(self):
+        real, effective, saved, _, _, _ = self._proc_cred()
+        return _common.puids(real, effective, saved)
+
+    @wrap_exceptions
+    def gids(self):
+        _, _, _, real, effective, saved = self._proc_cred()
+        return _common.puids(real, effective, saved)
+
+    @wrap_exceptions
+    def cpu_times(self):
+        cpu_times = cext.proc_cpu_times(self.pid, self._procfs_path)
+        return _common.pcputimes(*cpu_times)
+
+    @wrap_exceptions
+    def terminal(self):
+        ttydev = self._proc_basic_info()[proc_info_map['ttynr']]
+        # convert from 64-bit dev_t to 32-bit dev_t and then map the device
+        ttydev = (((ttydev & 0x0000FFFF00000000) >> 16) | (ttydev & 0xFFFF))
+        # try to match rdev of /dev/pts/* files ttydev
+        for dev in glob.glob("/dev/**/*"):
+            if os.stat(dev).st_rdev == ttydev:
+                return dev
+        return None
+
+    @wrap_exceptions
+    def cwd(self):
+        procfs_path = self._procfs_path
+        try:
+            result = os.readlink("%s/%s/cwd" % (procfs_path, self.pid))
+            return result.rstrip('/')
+        except OSError as err:
+            if err.errno == errno.ENOENT:
+                os.stat("%s/%s" % (procfs_path, self.pid))  # raise NSP or AD
+                return None
+            raise
+
+    @wrap_exceptions
+    def memory_info(self):
+        ret = self._proc_basic_info()
+        rss = ret[proc_info_map['rss']] * 1024
+        vms = ret[proc_info_map['vms']] * 1024
+        return pmem(rss, vms)
+
+    memory_full_info = memory_info
+
+    @wrap_exceptions
+    def status(self):
+        code = self._proc_basic_info()[proc_info_map['status']]
+        # XXX is '?' legit? (we're not supposed to return it anyway)
+        return PROC_STATUSES.get(code, '?')
+
+    def open_files(self):
+        # TODO rewrite without using procfiles (stat /proc/pid/fd/* and then
+        # find matching name of the inode)
+        p = subprocess.Popen(["/usr/bin/procfiles", "-n", str(self.pid)],
+                             stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        stdout, stderr = p.communicate()
+        if PY3:
+            stdout, stderr = [x.decode(sys.stdout.encoding)
+                              for x in (stdout, stderr)]
+        if "no such process" in stderr.lower():
+            raise NoSuchProcess(self.pid, self._name)
+        procfiles = re.findall(r"(\d+): S_IFREG.*\s*.*name:(.*)\n", stdout)
+        retlist = []
+        for fd, path in procfiles:
+            path = path.strip()
+            if path.startswith("//"):
+                path = path[1:]
+            if path.lower() == "cannot be retrieved":
+                continue
+            retlist.append(_common.popenfile(path, int(fd)))
+        return retlist
+
+    @wrap_exceptions
+    def num_fds(self):
+        if self.pid == 0:       # no /proc/0/fd
+            return 0
+        return len(os.listdir("%s/%s/fd" % (self._procfs_path, self.pid)))
+
+    @wrap_exceptions
+    def num_ctx_switches(self):
+        return _common.pctxsw(
+            *cext.proc_num_ctx_switches(self.pid))
+
+    @wrap_exceptions
+    def wait(self, timeout=None):
+        return _psposix.wait_pid(self.pid, timeout, self._name)
+
+    if HAS_PROC_IO_COUNTERS:
+        @wrap_exceptions
+        def io_counters(self):
+            try:
+                rc, wc, rb, wb = cext.proc_io_counters(self.pid)
+            except OSError:
+                # if process is terminated, proc_io_counters returns OSError
+                # instead of NSP
+                if not pid_exists(self.pid):
+                    raise NoSuchProcess(self.pid, self._name)
+                raise
+            return _common.pio(rc, wc, rb, wb)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_psbsd.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_psbsd.py
new file mode 100644
index 00000000..3d9dfdab
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_psbsd.py
@@ -0,0 +1,926 @@
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""FreeBSD, OpenBSD and NetBSD platforms implementation."""
+
+import contextlib
+import errno
+import functools
+import os
+import xml.etree.ElementTree as ET
+from collections import namedtuple
+from socket import AF_INET
+from collections import defaultdict
+
+from . import _common
+from . import _psposix
+from . import _psutil_bsd as cext
+from . import _psutil_posix as cext_posix
+from ._common import AF_INET6
+from ._common import conn_tmap
+from ._common import FREEBSD
+from ._common import memoize
+from ._common import memoize_when_activated
+from ._common import NETBSD
+from ._common import OPENBSD
+from ._common import sockfam_to_enum
+from ._common import socktype_to_enum
+from ._common import usage_percent
+from ._compat import which
+
+__extra__all__ = []
+
+
+# =====================================================================
+# --- globals
+# =====================================================================
+
+
+if FREEBSD:
+    PROC_STATUSES = {
+        cext.SIDL: _common.STATUS_IDLE,
+        cext.SRUN: _common.STATUS_RUNNING,
+        cext.SSLEEP: _common.STATUS_SLEEPING,
+        cext.SSTOP: _common.STATUS_STOPPED,
+        cext.SZOMB: _common.STATUS_ZOMBIE,
+        cext.SWAIT: _common.STATUS_WAITING,
+        cext.SLOCK: _common.STATUS_LOCKED,
+    }
+elif OPENBSD or NETBSD:
+    PROC_STATUSES = {
+        cext.SIDL: _common.STATUS_IDLE,
+        cext.SSLEEP: _common.STATUS_SLEEPING,
+        cext.SSTOP: _common.STATUS_STOPPED,
+        # According to /usr/include/sys/proc.h SZOMB is unused.
+        # test_zombie_process() shows that SDEAD is the right
+        # equivalent. Also it appears there's no equivalent of
+        # psutil.STATUS_DEAD. SDEAD really means STATUS_ZOMBIE.
+        # cext.SZOMB: _common.STATUS_ZOMBIE,
+        cext.SDEAD: _common.STATUS_ZOMBIE,
+        cext.SZOMB: _common.STATUS_ZOMBIE,
+        # From http://www.eecs.harvard.edu/~margo/cs161/videos/proc.h.txt
+        # OpenBSD has SRUN and SONPROC: SRUN indicates that a process
+        # is runnable but *not* yet running, i.e. is on a run queue.
+        # SONPROC indicates that the process is actually executing on
+        # a CPU, i.e. it is no longer on a run queue.
+        # As such we'll map SRUN to STATUS_WAKING and SONPROC to
+        # STATUS_RUNNING
+        cext.SRUN: _common.STATUS_WAKING,
+        cext.SONPROC: _common.STATUS_RUNNING,
+    }
+elif NETBSD:
+    PROC_STATUSES = {
+        cext.SIDL: _common.STATUS_IDLE,
+        cext.SACTIVE: _common.STATUS_RUNNING,
+        cext.SDYING: _common.STATUS_ZOMBIE,
+        cext.SSTOP: _common.STATUS_STOPPED,
+        cext.SZOMB: _common.STATUS_ZOMBIE,
+        cext.SDEAD: _common.STATUS_DEAD,
+        cext.SSUSPENDED: _common.STATUS_SUSPENDED,  # unique to NetBSD
+    }
+
+TCP_STATUSES = {
+    cext.TCPS_ESTABLISHED: _common.CONN_ESTABLISHED,
+    cext.TCPS_SYN_SENT: _common.CONN_SYN_SENT,
+    cext.TCPS_SYN_RECEIVED: _common.CONN_SYN_RECV,
+    cext.TCPS_FIN_WAIT_1: _common.CONN_FIN_WAIT1,
+    cext.TCPS_FIN_WAIT_2: _common.CONN_FIN_WAIT2,
+    cext.TCPS_TIME_WAIT: _common.CONN_TIME_WAIT,
+    cext.TCPS_CLOSED: _common.CONN_CLOSE,
+    cext.TCPS_CLOSE_WAIT: _common.CONN_CLOSE_WAIT,
+    cext.TCPS_LAST_ACK: _common.CONN_LAST_ACK,
+    cext.TCPS_LISTEN: _common.CONN_LISTEN,
+    cext.TCPS_CLOSING: _common.CONN_CLOSING,
+    cext.PSUTIL_CONN_NONE: _common.CONN_NONE,
+}
+
+if NETBSD:
+    PAGESIZE = os.sysconf("SC_PAGESIZE")
+else:
+    PAGESIZE = os.sysconf("SC_PAGE_SIZE")
+AF_LINK = cext_posix.AF_LINK
+
+HAS_PER_CPU_TIMES = hasattr(cext, "per_cpu_times")
+HAS_PROC_NUM_THREADS = hasattr(cext, "proc_num_threads")
+HAS_PROC_OPEN_FILES = hasattr(cext, 'proc_open_files')
+HAS_PROC_NUM_FDS = hasattr(cext, 'proc_num_fds')
+
+kinfo_proc_map = dict(
+    ppid=0,
+    status=1,
+    real_uid=2,
+    effective_uid=3,
+    saved_uid=4,
+    real_gid=5,
+    effective_gid=6,
+    saved_gid=7,
+    ttynr=8,
+    create_time=9,
+    ctx_switches_vol=10,
+    ctx_switches_unvol=11,
+    read_io_count=12,
+    write_io_count=13,
+    user_time=14,
+    sys_time=15,
+    ch_user_time=16,
+    ch_sys_time=17,
+    rss=18,
+    vms=19,
+    memtext=20,
+    memdata=21,
+    memstack=22,
+    cpunum=23,
+    name=24,
+)
+
+# These objects get set on "import psutil" from the __init__.py
+# file, see: https://github.com/giampaolo/psutil/issues/1402
+NoSuchProcess = None
+ZombieProcess = None
+AccessDenied = None
+TimeoutExpired = None
+
+
+# =====================================================================
+# --- named tuples
+# =====================================================================
+
+
+# psutil.virtual_memory()
+svmem = namedtuple(
+    'svmem', ['total', 'available', 'percent', 'used', 'free',
+              'active', 'inactive', 'buffers', 'cached', 'shared', 'wired'])
+# psutil.cpu_times()
+scputimes = namedtuple(
+    'scputimes', ['user', 'nice', 'system', 'idle', 'irq'])
+# psutil.Process.memory_info()
+pmem = namedtuple('pmem', ['rss', 'vms', 'text', 'data', 'stack'])
+# psutil.Process.memory_full_info()
+pfullmem = pmem
+# psutil.Process.cpu_times()
+pcputimes = namedtuple('pcputimes',
+                       ['user', 'system', 'children_user', 'children_system'])
+# psutil.Process.memory_maps(grouped=True)
+pmmap_grouped = namedtuple(
+    'pmmap_grouped', 'path rss, private, ref_count, shadow_count')
+# psutil.Process.memory_maps(grouped=False)
+pmmap_ext = namedtuple(
+    'pmmap_ext', 'addr, perms path rss, private, ref_count, shadow_count')
+# psutil.disk_io_counters()
+if FREEBSD:
+    sdiskio = namedtuple('sdiskio', ['read_count', 'write_count',
+                                     'read_bytes', 'write_bytes',
+                                     'read_time', 'write_time',
+                                     'busy_time'])
+else:
+    sdiskio = namedtuple('sdiskio', ['read_count', 'write_count',
+                                     'read_bytes', 'write_bytes'])
+
+
+# =====================================================================
+# --- memory
+# =====================================================================
+
+
+def virtual_memory():
+    """System virtual memory as a namedtuple."""
+    mem = cext.virtual_mem()
+    total, free, active, inactive, wired, cached, buffers, shared = mem
+    if NETBSD:
+        # On NetBSD buffers and shared mem is determined via /proc.
+        # The C ext set them to 0.
+        with open('/proc/meminfo', 'rb') as f:
+            for line in f:
+                if line.startswith(b'Buffers:'):
+                    buffers = int(line.split()[1]) * 1024
+                elif line.startswith(b'MemShared:'):
+                    shared = int(line.split()[1]) * 1024
+    avail = inactive + cached + free
+    used = active + wired + cached
+    percent = usage_percent((total - avail), total, round_=1)
+    return svmem(total, avail, percent, used, free,
+                 active, inactive, buffers, cached, shared, wired)
+
+
+def swap_memory():
+    """System swap memory as (total, used, free, sin, sout) namedtuple."""
+    total, used, free, sin, sout = cext.swap_mem()
+    percent = usage_percent(used, total, round_=1)
+    return _common.sswap(total, used, free, percent, sin, sout)
+
+
+# =====================================================================
+# --- CPU
+# =====================================================================
+
+
+def cpu_times():
+    """Return system per-CPU times as a namedtuple"""
+    user, nice, system, idle, irq = cext.cpu_times()
+    return scputimes(user, nice, system, idle, irq)
+
+
+if HAS_PER_CPU_TIMES:
+    def per_cpu_times():
+        """Return system CPU times as a namedtuple"""
+        ret = []
+        for cpu_t in cext.per_cpu_times():
+            user, nice, system, idle, irq = cpu_t
+            item = scputimes(user, nice, system, idle, irq)
+            ret.append(item)
+        return ret
+else:
+    # XXX
+    # Ok, this is very dirty.
+    # On FreeBSD < 8 we cannot gather per-cpu information, see:
+    # https://github.com/giampaolo/psutil/issues/226
+    # If num cpus > 1, on first call we return single cpu times to avoid a
+    # crash at psutil import time.
+    # Next calls will fail with NotImplementedError
+    def per_cpu_times():
+        """Return system CPU times as a namedtuple"""
+        if cpu_count_logical() == 1:
+            return [cpu_times()]
+        if per_cpu_times.__called__:
+            raise NotImplementedError("supported only starting from FreeBSD 8")
+        per_cpu_times.__called__ = True
+        return [cpu_times()]
+
+    per_cpu_times.__called__ = False
+
+
+def cpu_count_logical():
+    """Return the number of logical CPUs in the system."""
+    return cext.cpu_count_logical()
+
+
+if OPENBSD or NETBSD:
+    def cpu_count_physical():
+        # OpenBSD and NetBSD do not implement this.
+        return 1 if cpu_count_logical() == 1 else None
+else:
+    def cpu_count_physical():
+        """Return the number of physical CPUs in the system."""
+        # From the C module we'll get an XML string similar to this:
+        # http://manpages.ubuntu.com/manpages/precise/man4/smp.4freebsd.html
+        # We may get None in case "sysctl kern.sched.topology_spec"
+        # is not supported on this BSD version, in which case we'll mimic
+        # os.cpu_count() and return None.
+        ret = None
+        s = cext.cpu_count_phys()
+        if s is not None:
+            # get rid of padding chars appended at the end of the string
+            index = s.rfind("</groups>")
+            if index != -1:
+                s = s[:index + 9]
+                root = ET.fromstring(s)
+                try:
+                    ret = len(root.findall('group/children/group/cpu')) or None
+                finally:
+                    # needed otherwise it will memleak
+                    root.clear()
+        if not ret:
+            # If logical CPUs are 1 it's obvious we'll have only 1
+            # physical CPU.
+            if cpu_count_logical() == 1:
+                return 1
+        return ret
+
+
+def cpu_stats():
+    """Return various CPU stats as a named tuple."""
+    if FREEBSD:
+        # Note: the C ext is returning some metrics we are not exposing:
+        # traps.
+        ctxsw, intrs, soft_intrs, syscalls, traps = cext.cpu_stats()
+    elif NETBSD:
+        # XXX
+        # Note about intrs: the C extension returns 0. intrs
+        # can be determined via /proc/stat; it has the same value as
+        # soft_intrs thought so the kernel is faking it (?).
+        #
+        # Note about syscalls: the C extension always sets it to 0 (?).
+        #
+        # Note: the C ext is returning some metrics we are not exposing:
+        # traps, faults and forks.
+        ctxsw, intrs, soft_intrs, syscalls, traps, faults, forks = \
+            cext.cpu_stats()
+        with open('/proc/stat', 'rb') as f:
+            for line in f:
+                if line.startswith(b'intr'):
+                    intrs = int(line.split()[1])
+    elif OPENBSD:
+        # Note: the C ext is returning some metrics we are not exposing:
+        # traps, faults and forks.
+        ctxsw, intrs, soft_intrs, syscalls, traps, faults, forks = \
+            cext.cpu_stats()
+    return _common.scpustats(ctxsw, intrs, soft_intrs, syscalls)
+
+
+# =====================================================================
+# --- disks
+# =====================================================================
+
+
+def disk_partitions(all=False):
+    """Return mounted disk partitions as a list of namedtuples.
+    'all' argument is ignored, see:
+    https://github.com/giampaolo/psutil/issues/906
+    """
+    retlist = []
+    partitions = cext.disk_partitions()
+    for partition in partitions:
+        device, mountpoint, fstype, opts = partition
+        ntuple = _common.sdiskpart(device, mountpoint, fstype, opts)
+        retlist.append(ntuple)
+    return retlist
+
+
+disk_usage = _psposix.disk_usage
+disk_io_counters = cext.disk_io_counters
+
+
+# =====================================================================
+# --- network
+# =====================================================================
+
+
+net_io_counters = cext.net_io_counters
+net_if_addrs = cext_posix.net_if_addrs
+
+
+def net_if_stats():
+    """Get NIC stats (isup, duplex, speed, mtu)."""
+    names = net_io_counters().keys()
+    ret = {}
+    for name in names:
+        try:
+            mtu = cext_posix.net_if_mtu(name)
+            isup = cext_posix.net_if_flags(name)
+            duplex, speed = cext_posix.net_if_duplex_speed(name)
+        except OSError as err:
+            # https://github.com/giampaolo/psutil/issues/1279
+            if err.errno != errno.ENODEV:
+                raise
+        else:
+            if hasattr(_common, 'NicDuplex'):
+                duplex = _common.NicDuplex(duplex)
+            ret[name] = _common.snicstats(isup, duplex, speed, mtu)
+    return ret
+
+
+def net_connections(kind):
+    """System-wide network connections."""
+    if OPENBSD:
+        ret = []
+        for pid in pids():
+            try:
+                cons = Process(pid).connections(kind)
+            except (NoSuchProcess, ZombieProcess):
+                continue
+            else:
+                for conn in cons:
+                    conn = list(conn)
+                    conn.append(pid)
+                    ret.append(_common.sconn(*conn))
+        return ret
+
+    if kind not in _common.conn_tmap:
+        raise ValueError("invalid %r kind argument; choose between %s"
+                         % (kind, ', '.join([repr(x) for x in conn_tmap])))
+    families, types = conn_tmap[kind]
+    ret = set()
+    if NETBSD:
+        rawlist = cext.net_connections(-1)
+    else:
+        rawlist = cext.net_connections()
+    for item in rawlist:
+        fd, fam, type, laddr, raddr, status, pid = item
+        # TODO: apply filter at C level
+        if fam in families and type in types:
+            try:
+                status = TCP_STATUSES[status]
+            except KeyError:
+                # XXX: Not sure why this happens. I saw this occurring
+                # with IPv6 sockets opened by 'vim'. Those sockets
+                # have a very short lifetime so maybe the kernel
+                # can't initialize their status?
+                status = TCP_STATUSES[cext.PSUTIL_CONN_NONE]
+            if fam in (AF_INET, AF_INET6):
+                if laddr:
+                    laddr = _common.addr(*laddr)
+                if raddr:
+                    raddr = _common.addr(*raddr)
+            fam = sockfam_to_enum(fam)
+            type = socktype_to_enum(type)
+            nt = _common.sconn(fd, fam, type, laddr, raddr, status, pid)
+            ret.add(nt)
+    return list(ret)
+
+
+# =====================================================================
+#  --- sensors
+# =====================================================================
+
+
+if FREEBSD:
+
+    def sensors_battery():
+        """Return battery info."""
+        try:
+            percent, minsleft, power_plugged = cext.sensors_battery()
+        except NotImplementedError:
+            # See: https://github.com/giampaolo/psutil/issues/1074
+            return None
+        power_plugged = power_plugged == 1
+        if power_plugged:
+            secsleft = _common.POWER_TIME_UNLIMITED
+        elif minsleft == -1:
+            secsleft = _common.POWER_TIME_UNKNOWN
+        else:
+            secsleft = minsleft * 60
+        return _common.sbattery(percent, secsleft, power_plugged)
+
+    def sensors_temperatures():
+        "Return CPU cores temperatures if available, else an empty dict."
+        ret = defaultdict(list)
+        num_cpus = cpu_count_logical()
+        for cpu in range(num_cpus):
+            try:
+                current, high = cext.sensors_cpu_temperature(cpu)
+                if high <= 0:
+                    high = None
+                name = "Core %s" % cpu
+                ret["coretemp"].append(
+                    _common.shwtemp(name, current, high, high))
+            except NotImplementedError:
+                pass
+
+        return ret
+
+    def cpu_freq():
+        """Return frequency metrics for CPUs. As of Dec 2018 only
+        CPU 0 appears to be supported by FreeBSD and all other cores
+        match the frequency of CPU 0.
+        """
+        ret = []
+        num_cpus = cpu_count_logical()
+        for cpu in range(num_cpus):
+            try:
+                current, available_freq = cext.cpu_frequency(cpu)
+            except NotImplementedError:
+                continue
+            if available_freq:
+                try:
+                    min_freq = int(available_freq.split(" ")[-1].split("/")[0])
+                except(IndexError, ValueError):
+                    min_freq = None
+                try:
+                    max_freq = int(available_freq.split(" ")[0].split("/")[0])
+                except(IndexError, ValueError):
+                    max_freq = None
+            ret.append(_common.scpufreq(current, min_freq, max_freq))
+        return ret
+
+
+# =====================================================================
+#  --- other system functions
+# =====================================================================
+
+
+def boot_time():
+    """The system boot time expressed in seconds since the epoch."""
+    return cext.boot_time()
+
+
+def users():
+    """Return currently connected users as a list of namedtuples."""
+    retlist = []
+    rawlist = cext.users()
+    for item in rawlist:
+        user, tty, hostname, tstamp, pid = item
+        if pid == -1:
+            assert OPENBSD
+            pid = None
+        if tty == '~':
+            continue  # reboot or shutdown
+        nt = _common.suser(user, tty or None, hostname, tstamp, pid)
+        retlist.append(nt)
+    return retlist
+
+
+# =====================================================================
+# --- processes
+# =====================================================================
+
+
+@memoize
+def _pid_0_exists():
+    try:
+        Process(0).name()
+    except NoSuchProcess:
+        return False
+    except AccessDenied:
+        return True
+    else:
+        return True
+
+
+def pids():
+    """Returns a list of PIDs currently running on the system."""
+    ret = cext.pids()
+    if OPENBSD and (0 not in ret) and _pid_0_exists():
+        # On OpenBSD the kernel does not return PID 0 (neither does
+        # ps) but it's actually querable (Process(0) will succeed).
+        ret.insert(0, 0)
+    return ret
+
+
+if OPENBSD or NETBSD:
+    def pid_exists(pid):
+        """Return True if pid exists."""
+        exists = _psposix.pid_exists(pid)
+        if not exists:
+            # We do this because _psposix.pid_exists() lies in case of
+            # zombie processes.
+            return pid in pids()
+        else:
+            return True
+else:
+    pid_exists = _psposix.pid_exists
+
+
+def wrap_exceptions(fun):
+    """Decorator which translates bare OSError exceptions into
+    NoSuchProcess and AccessDenied.
+    """
+    @functools.wraps(fun)
+    def wrapper(self, *args, **kwargs):
+        try:
+            return fun(self, *args, **kwargs)
+        except OSError as err:
+            if self.pid == 0:
+                if 0 in pids():
+                    raise AccessDenied(self.pid, self._name)
+                else:
+                    raise
+            if err.errno == errno.ESRCH:
+                if not pid_exists(self.pid):
+                    raise NoSuchProcess(self.pid, self._name)
+                else:
+                    raise ZombieProcess(self.pid, self._name, self._ppid)
+            if err.errno in (errno.EPERM, errno.EACCES):
+                raise AccessDenied(self.pid, self._name)
+            raise
+    return wrapper
+
+
+@contextlib.contextmanager
+def wrap_exceptions_procfs(inst):
+    """Same as above, for routines relying on reading /proc fs."""
+    try:
+        yield
+    except EnvironmentError as err:
+        # ENOENT (no such file or directory) gets raised on open().
+        # ESRCH (no such process) can get raised on read() if
+        # process is gone in meantime.
+        if err.errno in (errno.ENOENT, errno.ESRCH):
+            if not pid_exists(inst.pid):
+                raise NoSuchProcess(inst.pid, inst._name)
+            else:
+                raise ZombieProcess(inst.pid, inst._name, inst._ppid)
+        if err.errno in (errno.EPERM, errno.EACCES):
+            raise AccessDenied(inst.pid, inst._name)
+        raise
+
+
+class Process(object):
+    """Wrapper class around underlying C implementation."""
+
+    __slots__ = ["pid", "_name", "_ppid", "_cache"]
+
+    def __init__(self, pid):
+        self.pid = pid
+        self._name = None
+        self._ppid = None
+
+    def _assert_alive(self):
+        """Raise NSP if the process disappeared on us."""
+        # For those C function who do not raise NSP, possibly returning
+        # incorrect or incomplete result.
+        cext.proc_name(self.pid)
+
+    @wrap_exceptions
+    @memoize_when_activated
+    def oneshot(self):
+        """Retrieves multiple process info in one shot as a raw tuple."""
+        ret = cext.proc_oneshot_info(self.pid)
+        assert len(ret) == len(kinfo_proc_map)
+        return ret
+
+    def oneshot_enter(self):
+        self.oneshot.cache_activate(self)
+
+    def oneshot_exit(self):
+        self.oneshot.cache_deactivate(self)
+
+    @wrap_exceptions
+    def name(self):
+        name = self.oneshot()[kinfo_proc_map['name']]
+        return name if name is not None else cext.proc_name(self.pid)
+
+    @wrap_exceptions
+    def exe(self):
+        if FREEBSD:
+            return cext.proc_exe(self.pid)
+        elif NETBSD:
+            if self.pid == 0:
+                # /proc/0 dir exists but /proc/0/exe doesn't
+                return ""
+            with wrap_exceptions_procfs(self):
+                return os.readlink("/proc/%s/exe" % self.pid)
+        else:
+            # OpenBSD: exe cannot be determined; references:
+            # https://chromium.googlesource.com/chromium/src/base/+/
+            #     master/base_paths_posix.cc
+            # We try our best guess by using which against the first
+            # cmdline arg (may return None).
+            cmdline = self.cmdline()
+            if cmdline:
+                return which(cmdline[0])
+            else:
+                return ""
+
+    @wrap_exceptions
+    def cmdline(self):
+        if OPENBSD and self.pid == 0:
+            return []  # ...else it crashes
+        elif NETBSD:
+            # XXX - most of the times the underlying sysctl() call on Net
+            # and Open BSD returns a truncated string.
+            # Also /proc/pid/cmdline behaves the same so it looks
+            # like this is a kernel bug.
+            try:
+                return cext.proc_cmdline(self.pid)
+            except OSError as err:
+                if err.errno == errno.EINVAL:
+                    if not pid_exists(self.pid):
+                        raise NoSuchProcess(self.pid, self._name)
+                    else:
+                        raise ZombieProcess(self.pid, self._name, self._ppid)
+                else:
+                    raise
+        else:
+            return cext.proc_cmdline(self.pid)
+
+    @wrap_exceptions
+    def terminal(self):
+        tty_nr = self.oneshot()[kinfo_proc_map['ttynr']]
+        tmap = _psposix.get_terminal_map()
+        try:
+            return tmap[tty_nr]
+        except KeyError:
+            return None
+
+    @wrap_exceptions
+    def ppid(self):
+        self._ppid = self.oneshot()[kinfo_proc_map['ppid']]
+        return self._ppid
+
+    @wrap_exceptions
+    def uids(self):
+        rawtuple = self.oneshot()
+        return _common.puids(
+            rawtuple[kinfo_proc_map['real_uid']],
+            rawtuple[kinfo_proc_map['effective_uid']],
+            rawtuple[kinfo_proc_map['saved_uid']])
+
+    @wrap_exceptions
+    def gids(self):
+        rawtuple = self.oneshot()
+        return _common.pgids(
+            rawtuple[kinfo_proc_map['real_gid']],
+            rawtuple[kinfo_proc_map['effective_gid']],
+            rawtuple[kinfo_proc_map['saved_gid']])
+
+    @wrap_exceptions
+    def cpu_times(self):
+        rawtuple = self.oneshot()
+        return _common.pcputimes(
+            rawtuple[kinfo_proc_map['user_time']],
+            rawtuple[kinfo_proc_map['sys_time']],
+            rawtuple[kinfo_proc_map['ch_user_time']],
+            rawtuple[kinfo_proc_map['ch_sys_time']])
+
+    if FREEBSD:
+        @wrap_exceptions
+        def cpu_num(self):
+            return self.oneshot()[kinfo_proc_map['cpunum']]
+
+    @wrap_exceptions
+    def memory_info(self):
+        rawtuple = self.oneshot()
+        return pmem(
+            rawtuple[kinfo_proc_map['rss']],
+            rawtuple[kinfo_proc_map['vms']],
+            rawtuple[kinfo_proc_map['memtext']],
+            rawtuple[kinfo_proc_map['memdata']],
+            rawtuple[kinfo_proc_map['memstack']])
+
+    memory_full_info = memory_info
+
+    @wrap_exceptions
+    def create_time(self):
+        return self.oneshot()[kinfo_proc_map['create_time']]
+
+    @wrap_exceptions
+    def num_threads(self):
+        if HAS_PROC_NUM_THREADS:
+            # FreeBSD
+            return cext.proc_num_threads(self.pid)
+        else:
+            return len(self.threads())
+
+    @wrap_exceptions
+    def num_ctx_switches(self):
+        rawtuple = self.oneshot()
+        return _common.pctxsw(
+            rawtuple[kinfo_proc_map['ctx_switches_vol']],
+            rawtuple[kinfo_proc_map['ctx_switches_unvol']])
+
+    @wrap_exceptions
+    def threads(self):
+        # Note: on OpenSBD this (/dev/mem) requires root access.
+        rawlist = cext.proc_threads(self.pid)
+        retlist = []
+        for thread_id, utime, stime in rawlist:
+            ntuple = _common.pthread(thread_id, utime, stime)
+            retlist.append(ntuple)
+        if OPENBSD:
+            self._assert_alive()
+        return retlist
+
+    @wrap_exceptions
+    def connections(self, kind='inet'):
+        if kind not in conn_tmap:
+            raise ValueError("invalid %r kind argument; choose between %s"
+                             % (kind, ', '.join([repr(x) for x in conn_tmap])))
+
+        if NETBSD:
+            families, types = conn_tmap[kind]
+            ret = set()
+            rawlist = cext.net_connections(self.pid)
+            for item in rawlist:
+                fd, fam, type, laddr, raddr, status, pid = item
+                assert pid == self.pid
+                if fam in families and type in types:
+                    try:
+                        status = TCP_STATUSES[status]
+                    except KeyError:
+                        status = TCP_STATUSES[cext.PSUTIL_CONN_NONE]
+                    if fam in (AF_INET, AF_INET6):
+                        if laddr:
+                            laddr = _common.addr(*laddr)
+                        if raddr:
+                            raddr = _common.addr(*raddr)
+                    fam = sockfam_to_enum(fam)
+                    type = socktype_to_enum(type)
+                    nt = _common.pconn(fd, fam, type, laddr, raddr, status)
+                    ret.add(nt)
+            self._assert_alive()
+            return list(ret)
+
+        families, types = conn_tmap[kind]
+        rawlist = cext.proc_connections(self.pid, families, types)
+        ret = []
+        for item in rawlist:
+            fd, fam, type, laddr, raddr, status = item
+            if fam in (AF_INET, AF_INET6):
+                if laddr:
+                    laddr = _common.addr(*laddr)
+                if raddr:
+                    raddr = _common.addr(*raddr)
+            fam = sockfam_to_enum(fam)
+            type = socktype_to_enum(type)
+            status = TCP_STATUSES[status]
+            nt = _common.pconn(fd, fam, type, laddr, raddr, status)
+            ret.append(nt)
+        if OPENBSD:
+            self._assert_alive()
+        return ret
+
+    @wrap_exceptions
+    def wait(self, timeout=None):
+        return _psposix.wait_pid(self.pid, timeout, self._name)
+
+    @wrap_exceptions
+    def nice_get(self):
+        return cext_posix.getpriority(self.pid)
+
+    @wrap_exceptions
+    def nice_set(self, value):
+        return cext_posix.setpriority(self.pid, value)
+
+    @wrap_exceptions
+    def status(self):
+        code = self.oneshot()[kinfo_proc_map['status']]
+        # XXX is '?' legit? (we're not supposed to return it anyway)
+        return PROC_STATUSES.get(code, '?')
+
+    @wrap_exceptions
+    def io_counters(self):
+        rawtuple = self.oneshot()
+        return _common.pio(
+            rawtuple[kinfo_proc_map['read_io_count']],
+            rawtuple[kinfo_proc_map['write_io_count']],
+            -1,
+            -1)
+
+    @wrap_exceptions
+    def cwd(self):
+        """Return process current working directory."""
+        # sometimes we get an empty string, in which case we turn
+        # it into None
+        if OPENBSD and self.pid == 0:
+            return None  # ...else it would raise EINVAL
+        elif NETBSD:
+            with wrap_exceptions_procfs(self):
+                return os.readlink("/proc/%s/cwd" % self.pid)
+        elif HAS_PROC_OPEN_FILES:
+            # FreeBSD < 8 does not support functions based on
+            # kinfo_getfile() and kinfo_getvmmap()
+            return cext.proc_cwd(self.pid) or None
+        else:
+            raise NotImplementedError(
+                "supported only starting from FreeBSD 8" if
+                FREEBSD else "")
+
+    nt_mmap_grouped = namedtuple(
+        'mmap', 'path rss, private, ref_count, shadow_count')
+    nt_mmap_ext = namedtuple(
+        'mmap', 'addr, perms path rss, private, ref_count, shadow_count')
+
+    def _not_implemented(self):
+        raise NotImplementedError
+
+    # FreeBSD < 8 does not support functions based on kinfo_getfile()
+    # and kinfo_getvmmap()
+    if HAS_PROC_OPEN_FILES:
+        @wrap_exceptions
+        def open_files(self):
+            """Return files opened by process as a list of namedtuples."""
+            rawlist = cext.proc_open_files(self.pid)
+            return [_common.popenfile(path, fd) for path, fd in rawlist]
+    else:
+        open_files = _not_implemented
+
+    # FreeBSD < 8 does not support functions based on kinfo_getfile()
+    # and kinfo_getvmmap()
+    if HAS_PROC_NUM_FDS:
+        @wrap_exceptions
+        def num_fds(self):
+            """Return the number of file descriptors opened by this process."""
+            ret = cext.proc_num_fds(self.pid)
+            if NETBSD:
+                self._assert_alive()
+            return ret
+    else:
+        num_fds = _not_implemented
+
+    # --- FreeBSD only APIs
+
+    if FREEBSD:
+
+        @wrap_exceptions
+        def cpu_affinity_get(self):
+            return cext.proc_cpu_affinity_get(self.pid)
+
+        @wrap_exceptions
+        def cpu_affinity_set(self, cpus):
+            # Pre-emptively check if CPUs are valid because the C
+            # function has a weird behavior in case of invalid CPUs,
+            # see: https://github.com/giampaolo/psutil/issues/586
+            allcpus = tuple(range(len(per_cpu_times())))
+            for cpu in cpus:
+                if cpu not in allcpus:
+                    raise ValueError("invalid CPU #%i (choose between %s)"
+                                     % (cpu, allcpus))
+            try:
+                cext.proc_cpu_affinity_set(self.pid, cpus)
+            except OSError as err:
+                # 'man cpuset_setaffinity' about EDEADLK:
+                # <<the call would leave a thread without a valid CPU to run
+                # on because the set does not overlap with the thread's
+                # anonymous mask>>
+                if err.errno in (errno.EINVAL, errno.EDEADLK):
+                    for cpu in cpus:
+                        if cpu not in allcpus:
+                            raise ValueError(
+                                "invalid CPU #%i (choose between %s)" % (
+                                    cpu, allcpus))
+                raise
+
+        @wrap_exceptions
+        def memory_maps(self):
+            return cext.proc_memory_maps(self.pid)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_pslinux.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_pslinux.py
new file mode 100644
index 00000000..41be6665
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_pslinux.py
@@ -0,0 +1,2119 @@
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Linux platform implementation."""
+
+from __future__ import division
+
+import base64
+import collections
+import errno
+import functools
+import glob
+import os
+import re
+import socket
+import struct
+import sys
+import traceback
+import warnings
+from collections import defaultdict
+from collections import namedtuple
+
+from . import _common
+from . import _psposix
+from . import _psutil_linux as cext
+from . import _psutil_posix as cext_posix
+from ._common import ENCODING
+from ._common import ENCODING_ERRS
+from ._common import isfile_strict
+from ._common import memoize
+from ._common import memoize_when_activated
+from ._common import NIC_DUPLEX_FULL
+from ._common import NIC_DUPLEX_HALF
+from ._common import NIC_DUPLEX_UNKNOWN
+from ._common import open_binary
+from ._common import open_text
+from ._common import parse_environ_block
+from ._common import path_exists_strict
+from ._common import supports_ipv6
+from ._common import usage_percent
+from ._compat import b
+from ._compat import basestring
+from ._compat import long
+from ._compat import PY3
+
+if sys.version_info >= (3, 4):
+    import enum
+else:
+    enum = None
+
+
+__extra__all__ = [
+    #
+    'PROCFS_PATH',
+    # io prio constants
+    "IOPRIO_CLASS_NONE", "IOPRIO_CLASS_RT", "IOPRIO_CLASS_BE",
+    "IOPRIO_CLASS_IDLE",
+    # connection status constants
+    "CONN_ESTABLISHED", "CONN_SYN_SENT", "CONN_SYN_RECV", "CONN_FIN_WAIT1",
+    "CONN_FIN_WAIT2", "CONN_TIME_WAIT", "CONN_CLOSE", "CONN_CLOSE_WAIT",
+    "CONN_LAST_ACK", "CONN_LISTEN", "CONN_CLOSING", ]
+
+
+# =====================================================================
+# --- globals
+# =====================================================================
+
+
+POWER_SUPPLY_PATH = "/sys/class/power_supply"
+HAS_SMAPS = os.path.exists('/proc/%s/smaps' % os.getpid())
+HAS_PRLIMIT = hasattr(cext, "linux_prlimit")
+HAS_PROC_IO_PRIORITY = hasattr(cext, "proc_ioprio_get")
+_DEFAULT = object()
+
+# RLIMIT_* constants, not guaranteed to be present on all kernels
+if HAS_PRLIMIT:
+    for name in dir(cext):
+        if name.startswith('RLIM'):
+            __extra__all__.append(name)
+
+# Number of clock ticks per second
+CLOCK_TICKS = os.sysconf("SC_CLK_TCK")
+PAGESIZE = os.sysconf("SC_PAGE_SIZE")
+BOOT_TIME = None  # set later
+# Used when reading "big" files, namely /proc/{pid}/smaps and /proc/net/*.
+# On Python 2, using a buffer with open() for such files may result in a
+# speedup, see: https://github.com/giampaolo/psutil/issues/708
+BIGFILE_BUFFERING = -1 if PY3 else 8192
+LITTLE_ENDIAN = sys.byteorder == 'little'
+
+# "man iostat" states that sectors are equivalent with blocks and have
+# a size of 512 bytes. Despite this value can be queried at runtime
+# via /sys/block/{DISK}/queue/hw_sector_size and results may vary
+# between 1k, 2k, or 4k... 512 appears to be a magic constant used
+# throughout Linux source code:
+# * https://stackoverflow.com/a/38136179/376587
+# * https://lists.gt.net/linux/kernel/2241060
+# * https://github.com/giampaolo/psutil/issues/1305
+# * https://github.com/torvalds/linux/blob/
+#     4f671fe2f9523a1ea206f63fe60a7c7b3a56d5c7/include/linux/bio.h#L99
+# * https://lkml.org/lkml/2015/8/17/234
+DISK_SECTOR_SIZE = 512
+
+if enum is None:
+    AF_LINK = socket.AF_PACKET
+else:
+    AddressFamily = enum.IntEnum('AddressFamily',
+                                 {'AF_LINK': int(socket.AF_PACKET)})
+    AF_LINK = AddressFamily.AF_LINK
+
+# ioprio_* constants http://linux.die.net/man/2/ioprio_get
+if enum is None:
+    IOPRIO_CLASS_NONE = 0
+    IOPRIO_CLASS_RT = 1
+    IOPRIO_CLASS_BE = 2
+    IOPRIO_CLASS_IDLE = 3
+else:
+    class IOPriority(enum.IntEnum):
+        IOPRIO_CLASS_NONE = 0
+        IOPRIO_CLASS_RT = 1
+        IOPRIO_CLASS_BE = 2
+        IOPRIO_CLASS_IDLE = 3
+
+    globals().update(IOPriority.__members__)
+
+# See:
+# https://github.com/torvalds/linux/blame/master/fs/proc/array.c
+# ...and (TASK_* constants):
+# https://github.com/torvalds/linux/blob/master/include/linux/sched.h
+PROC_STATUSES = {
+    "R": _common.STATUS_RUNNING,
+    "S": _common.STATUS_SLEEPING,
+    "D": _common.STATUS_DISK_SLEEP,
+    "T": _common.STATUS_STOPPED,
+    "t": _common.STATUS_TRACING_STOP,
+    "Z": _common.STATUS_ZOMBIE,
+    "X": _common.STATUS_DEAD,
+    "x": _common.STATUS_DEAD,
+    "K": _common.STATUS_WAKE_KILL,
+    "W": _common.STATUS_WAKING,
+    "I": _common.STATUS_IDLE,
+    "P": _common.STATUS_PARKED,
+}
+
+# https://github.com/torvalds/linux/blob/master/include/net/tcp_states.h
+TCP_STATUSES = {
+    "01": _common.CONN_ESTABLISHED,
+    "02": _common.CONN_SYN_SENT,
+    "03": _common.CONN_SYN_RECV,
+    "04": _common.CONN_FIN_WAIT1,
+    "05": _common.CONN_FIN_WAIT2,
+    "06": _common.CONN_TIME_WAIT,
+    "07": _common.CONN_CLOSE,
+    "08": _common.CONN_CLOSE_WAIT,
+    "09": _common.CONN_LAST_ACK,
+    "0A": _common.CONN_LISTEN,
+    "0B": _common.CONN_CLOSING
+}
+
+# These objects get set on "import psutil" from the __init__.py
+# file, see: https://github.com/giampaolo/psutil/issues/1402
+NoSuchProcess = None
+ZombieProcess = None
+AccessDenied = None
+TimeoutExpired = None
+
+
+# =====================================================================
+# --- named tuples
+# =====================================================================
+
+
+# psutil.virtual_memory()
+svmem = namedtuple(
+    'svmem', ['total', 'available', 'percent', 'used', 'free',
+              'active', 'inactive', 'buffers', 'cached', 'shared', 'slab'])
+# psutil.disk_io_counters()
+sdiskio = namedtuple(
+    'sdiskio', ['read_count', 'write_count',
+                'read_bytes', 'write_bytes',
+                'read_time', 'write_time',
+                'read_merged_count', 'write_merged_count',
+                'busy_time'])
+# psutil.Process().open_files()
+popenfile = namedtuple(
+    'popenfile', ['path', 'fd', 'position', 'mode', 'flags'])
+# psutil.Process().memory_info()
+pmem = namedtuple('pmem', 'rss vms shared text lib data dirty')
+# psutil.Process().memory_full_info()
+pfullmem = namedtuple('pfullmem', pmem._fields + ('uss', 'pss', 'swap'))
+# psutil.Process().memory_maps(grouped=True)
+pmmap_grouped = namedtuple(
+    'pmmap_grouped',
+    ['path', 'rss', 'size', 'pss', 'shared_clean', 'shared_dirty',
+     'private_clean', 'private_dirty', 'referenced', 'anonymous', 'swap'])
+# psutil.Process().memory_maps(grouped=False)
+pmmap_ext = namedtuple(
+    'pmmap_ext', 'addr perms ' + ' '.join(pmmap_grouped._fields))
+# psutil.Process.io_counters()
+pio = namedtuple('pio', ['read_count', 'write_count',
+                         'read_bytes', 'write_bytes',
+                         'read_chars', 'write_chars'])
+
+
+# =====================================================================
+# --- utils
+# =====================================================================
+
+
+if PY3:
+    def decode(s):
+        return s.decode(encoding=ENCODING, errors=ENCODING_ERRS)
+else:
+    def decode(s):
+        return s
+
+
+def get_procfs_path():
+    """Return updated psutil.PROCFS_PATH constant."""
+    return sys.modules['psutil'].PROCFS_PATH
+
+
+def readlink(path):
+    """Wrapper around os.readlink()."""
+    assert isinstance(path, basestring), path
+    path = os.readlink(path)
+    # readlink() might return paths containing null bytes ('\x00')
+    # resulting in "TypeError: must be encoded string without NULL
+    # bytes, not str" errors when the string is passed to other
+    # fs-related functions (os.*, open(), ...).
+    # Apparently everything after '\x00' is garbage (we can have
+    # ' (deleted)', 'new' and possibly others), see:
+    # https://github.com/giampaolo/psutil/issues/717
+    path = path.split('\x00')[0]
+    # Certain paths have ' (deleted)' appended. Usually this is
+    # bogus as the file actually exists. Even if it doesn't we
+    # don't care.
+    if path.endswith(' (deleted)') and not path_exists_strict(path):
+        path = path[:-10]
+    return path
+
+
+def file_flags_to_mode(flags):
+    """Convert file's open() flags into a readable string.
+    Used by Process.open_files().
+    """
+    modes_map = {os.O_RDONLY: 'r', os.O_WRONLY: 'w', os.O_RDWR: 'w+'}
+    mode = modes_map[flags & (os.O_RDONLY | os.O_WRONLY | os.O_RDWR)]
+    if flags & os.O_APPEND:
+        mode = mode.replace('w', 'a', 1)
+    mode = mode.replace('w+', 'r+')
+    # possible values: r, w, a, r+, a+
+    return mode
+
+
+def is_storage_device(name):
+    """Return True if the given name refers to a root device (e.g.
+    "sda", "nvme0n1") as opposed to a logical partition (e.g.  "sda1",
+    "nvme0n1p1"). If name is a virtual device (e.g. "loop1", "ram")
+    return True.
+    """
+    # Readapted from iostat source code, see:
+    # https://github.com/sysstat/sysstat/blob/
+    #     97912938cd476645b267280069e83b1c8dc0e1c7/common.c#L208
+    # Some devices may have a slash in their name (e.g. cciss/c0d0...).
+    name = name.replace('/', '!')
+    including_virtual = True
+    if including_virtual:
+        path = "/sys/block/%s" % name
+    else:
+        path = "/sys/block/%s/device" % name
+    return os.access(path, os.F_OK)
+
+
+@memoize
+def set_scputimes_ntuple(procfs_path):
+    """Set a namedtuple of variable fields depending on the CPU times
+    available on this Linux kernel version which may be:
+    (user, nice, system, idle, iowait, irq, softirq, [steal, [guest,
+     [guest_nice]]])
+    Used by cpu_times() function.
+    """
+    global scputimes
+    with open_binary('%s/stat' % procfs_path) as f:
+        values = f.readline().split()[1:]
+    fields = ['user', 'nice', 'system', 'idle', 'iowait', 'irq', 'softirq']
+    vlen = len(values)
+    if vlen >= 8:
+        # Linux >= 2.6.11
+        fields.append('steal')
+    if vlen >= 9:
+        # Linux >= 2.6.24
+        fields.append('guest')
+    if vlen >= 10:
+        # Linux >= 3.2.0
+        fields.append('guest_nice')
+    scputimes = namedtuple('scputimes', fields)
+
+
+def cat(fname, fallback=_DEFAULT, binary=True):
+    """Return file content.
+    fallback: the value returned in case the file does not exist or
+              cannot be read
+    binary: whether to open the file in binary or text mode.
+    """
+    try:
+        with open_binary(fname) if binary else open_text(fname) as f:
+            return f.read().strip()
+    except (IOError, OSError):
+        if fallback is not _DEFAULT:
+            return fallback
+        else:
+            raise
+
+
+try:
+    set_scputimes_ntuple("/proc")
+except Exception:
+    # Don't want to crash at import time.
+    traceback.print_exc()
+    scputimes = namedtuple('scputimes', 'user system idle')(0.0, 0.0, 0.0)
+
+
+# =====================================================================
+# --- system memory
+# =====================================================================
+
+
+def calculate_avail_vmem(mems):
+    """Fallback for kernels < 3.14 where /proc/meminfo does not provide
+    "MemAvailable:" column, see:
+    https://blog.famzah.net/2014/09/24/
+    This code reimplements the algorithm outlined here:
+    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/
+        commit/?id=34e431b0ae398fc54ea69ff85ec700722c9da773
+
+    XXX: on recent kernels this calculation differs by ~1.5% than
+    "MemAvailable:" as it's calculated slightly differently, see:
+    https://gitlab.com/procps-ng/procps/issues/42
+    https://github.com/famzah/linux-memavailable-procfs/issues/2
+    It is still way more realistic than doing (free + cached) though.
+    """
+    # Fallback for very old distros. According to
+    # https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/
+    #     commit/?id=34e431b0ae398fc54ea69ff85ec700722c9da773
+    # ...long ago "avail" was calculated as (free + cached).
+    # We might fallback in such cases:
+    # "Active(file)" not available: 2.6.28 / Dec 2008
+    # "Inactive(file)" not available: 2.6.28 / Dec 2008
+    # "SReclaimable:" not available: 2.6.19 / Nov 2006
+    # /proc/zoneinfo not available: 2.6.13 / Aug 2005
+    free = mems[b'MemFree:']
+    fallback = free + mems.get(b"Cached:", 0)
+    try:
+        lru_active_file = mems[b'Active(file):']
+        lru_inactive_file = mems[b'Inactive(file):']
+        slab_reclaimable = mems[b'SReclaimable:']
+    except KeyError:
+        return fallback
+    try:
+        f = open_binary('%s/zoneinfo' % get_procfs_path())
+    except IOError:
+        return fallback  # kernel 2.6.13
+
+    watermark_low = 0
+    with f:
+        for line in f:
+            line = line.strip()
+            if line.startswith(b'low'):
+                watermark_low += int(line.split()[1])
+    watermark_low *= PAGESIZE
+    watermark_low = watermark_low
+
+    avail = free - watermark_low
+    pagecache = lru_active_file + lru_inactive_file
+    pagecache -= min(pagecache / 2, watermark_low)
+    avail += pagecache
+    avail += slab_reclaimable - min(slab_reclaimable / 2.0, watermark_low)
+    return int(avail)
+
+
+def virtual_memory():
+    """Report virtual memory stats.
+    This implementation matches "free" and "vmstat -s" cmdline
+    utility values and procps-ng-3.3.12 source was used as a reference
+    (2016-09-18):
+    https://gitlab.com/procps-ng/procps/blob/
+        24fd2605c51fccc375ab0287cec33aa767f06718/proc/sysinfo.c
+    For reference, procps-ng-3.3.10 is the version available on Ubuntu
+    16.04.
+
+    Note about "available" memory: up until psutil 4.3 it was
+    calculated as "avail = (free + buffers + cached)". Now
+    "MemAvailable:" column (kernel 3.14) from /proc/meminfo is used as
+    it's more accurate.
+    That matches "available" column in newer versions of "free".
+    """
+    missing_fields = []
+    mems = {}
+    with open_binary('%s/meminfo' % get_procfs_path()) as f:
+        for line in f:
+            fields = line.split()
+            mems[fields[0]] = int(fields[1]) * 1024
+
+    # /proc doc states that the available fields in /proc/meminfo vary
+    # by architecture and compile options, but these 3 values are also
+    # returned by sysinfo(2); as such we assume they are always there.
+    total = mems[b'MemTotal:']
+    free = mems[b'MemFree:']
+    try:
+        buffers = mems[b'Buffers:']
+    except KeyError:
+        # https://github.com/giampaolo/psutil/issues/1010
+        buffers = 0
+        missing_fields.append('buffers')
+    try:
+        cached = mems[b"Cached:"]
+    except KeyError:
+        cached = 0
+        missing_fields.append('cached')
+    else:
+        # "free" cmdline utility sums reclaimable to cached.
+        # Older versions of procps used to add slab memory instead.
+        # This got changed in:
+        # https://gitlab.com/procps-ng/procps/commit/
+        #     05d751c4f076a2f0118b914c5e51cfbb4762ad8e
+        cached += mems.get(b"SReclaimable:", 0)  # since kernel 2.6.19
+
+    try:
+        shared = mems[b'Shmem:']  # since kernel 2.6.32
+    except KeyError:
+        try:
+            shared = mems[b'MemShared:']  # kernels 2.4
+        except KeyError:
+            shared = 0
+            missing_fields.append('shared')
+
+    try:
+        active = mems[b"Active:"]
+    except KeyError:
+        active = 0
+        missing_fields.append('active')
+
+    try:
+        inactive = mems[b"Inactive:"]
+    except KeyError:
+        try:
+            inactive = \
+                mems[b"Inact_dirty:"] + \
+                mems[b"Inact_clean:"] + \
+                mems[b"Inact_laundry:"]
+        except KeyError:
+            inactive = 0
+            missing_fields.append('inactive')
+
+    try:
+        slab = mems[b"Slab:"]
+    except KeyError:
+        slab = 0
+
+    used = total - free - cached - buffers
+    if used < 0:
+        # May be symptomatic of running within a LCX container where such
+        # values will be dramatically distorted over those of the host.
+        used = total - free
+
+    # - starting from 4.4.0 we match free's "available" column.
+    #   Before 4.4.0 we calculated it as (free + buffers + cached)
+    #   which matched htop.
+    # - free and htop available memory differs as per:
+    #   http://askubuntu.com/a/369589
+    #   http://unix.stackexchange.com/a/65852/168884
+    # - MemAvailable has been introduced in kernel 3.14
+    try:
+        avail = mems[b'MemAvailable:']
+    except KeyError:
+        avail = calculate_avail_vmem(mems)
+
+    if avail < 0:
+        avail = 0
+        missing_fields.append('available')
+
+    # If avail is greater than total or our calculation overflows,
+    # that's symptomatic of running within a LCX container where such
+    # values will be dramatically distorted over those of the host.
+    # https://gitlab.com/procps-ng/procps/blob/
+    #     24fd2605c51fccc375ab0287cec33aa767f06718/proc/sysinfo.c#L764
+    if avail > total:
+        avail = free
+
+    percent = usage_percent((total - avail), total, round_=1)
+
+    # Warn about missing metrics which are set to 0.
+    if missing_fields:
+        msg = "%s memory stats couldn't be determined and %s set to 0" % (
+            ", ".join(missing_fields),
+            "was" if len(missing_fields) == 1 else "were")
+        warnings.warn(msg, RuntimeWarning)
+
+    return svmem(total, avail, percent, used, free,
+                 active, inactive, buffers, cached, shared, slab)
+
+
+def swap_memory():
+    """Return swap memory metrics."""
+    mems = {}
+    with open_binary('%s/meminfo' % get_procfs_path()) as f:
+        for line in f:
+            fields = line.split()
+            mems[fields[0]] = int(fields[1]) * 1024
+    # We prefer /proc/meminfo over sysinfo() syscall so that
+    # psutil.PROCFS_PATH can be used in order to allow retrieval
+    # for linux containers, see:
+    # https://github.com/giampaolo/psutil/issues/1015
+    try:
+        total = mems[b'SwapTotal:']
+        free = mems[b'SwapFree:']
+    except KeyError:
+        _, _, _, _, total, free, unit_multiplier = cext.linux_sysinfo()
+        total *= unit_multiplier
+        free *= unit_multiplier
+
+    used = total - free
+    percent = usage_percent(used, total, round_=1)
+    # get pgin/pgouts
+    try:
+        f = open_binary("%s/vmstat" % get_procfs_path())
+    except IOError as err:
+        # see https://github.com/giampaolo/psutil/issues/722
+        msg = "'sin' and 'sout' swap memory stats couldn't " \
+              "be determined and were set to 0 (%s)" % str(err)
+        warnings.warn(msg, RuntimeWarning)
+        sin = sout = 0
+    else:
+        with f:
+            sin = sout = None
+            for line in f:
+                # values are expressed in 4 kilo bytes, we want
+                # bytes instead
+                if line.startswith(b'pswpin'):
+                    sin = int(line.split(b' ')[1]) * 4 * 1024
+                elif line.startswith(b'pswpout'):
+                    sout = int(line.split(b' ')[1]) * 4 * 1024
+                if sin is not None and sout is not None:
+                    break
+            else:
+                # we might get here when dealing with exotic Linux
+                # flavors, see:
+                # https://github.com/giampaolo/psutil/issues/313
+                msg = "'sin' and 'sout' swap memory stats couldn't " \
+                      "be determined and were set to 0"
+                warnings.warn(msg, RuntimeWarning)
+                sin = sout = 0
+    return _common.sswap(total, used, free, percent, sin, sout)
+
+
+# =====================================================================
+# --- CPU
+# =====================================================================
+
+
+def cpu_times():
+    """Return a named tuple representing the following system-wide
+    CPU times:
+    (user, nice, system, idle, iowait, irq, softirq [steal, [guest,
+     [guest_nice]]])
+    Last 3 fields may not be available on all Linux kernel versions.
+    """
+    procfs_path = get_procfs_path()
+    set_scputimes_ntuple(procfs_path)
+    with open_binary('%s/stat' % procfs_path) as f:
+        values = f.readline().split()
+    fields = values[1:len(scputimes._fields) + 1]
+    fields = [float(x) / CLOCK_TICKS for x in fields]
+    return scputimes(*fields)
+
+
+def per_cpu_times():
+    """Return a list of namedtuple representing the CPU times
+    for every CPU available on the system.
+    """
+    procfs_path = get_procfs_path()
+    set_scputimes_ntuple(procfs_path)
+    cpus = []
+    with open_binary('%s/stat' % procfs_path) as f:
+        # get rid of the first line which refers to system wide CPU stats
+        f.readline()
+        for line in f:
+            if line.startswith(b'cpu'):
+                values = line.split()
+                fields = values[1:len(scputimes._fields) + 1]
+                fields = [float(x) / CLOCK_TICKS for x in fields]
+                entry = scputimes(*fields)
+                cpus.append(entry)
+        return cpus
+
+
+def cpu_count_logical():
+    """Return the number of logical CPUs in the system."""
+    try:
+        return os.sysconf("SC_NPROCESSORS_ONLN")
+    except ValueError:
+        # as a second fallback we try to parse /proc/cpuinfo
+        num = 0
+        with open_binary('%s/cpuinfo' % get_procfs_path()) as f:
+            for line in f:
+                if line.lower().startswith(b'processor'):
+                    num += 1
+
+        # unknown format (e.g. amrel/sparc architectures), see:
+        # https://github.com/giampaolo/psutil/issues/200
+        # try to parse /proc/stat as a last resort
+        if num == 0:
+            search = re.compile(r'cpu\d')
+            with open_text('%s/stat' % get_procfs_path()) as f:
+                for line in f:
+                    line = line.split(' ')[0]
+                    if search.match(line):
+                        num += 1
+
+        if num == 0:
+            # mimic os.cpu_count()
+            return None
+        return num
+
+
+def cpu_count_physical():
+    """Return the number of physical cores in the system."""
+    mapping = {}
+    current_info = {}
+    with open_binary('%s/cpuinfo' % get_procfs_path()) as f:
+        for line in f:
+            line = line.strip().lower()
+            if not line:
+                # new section
+                if (b'physical id' in current_info and
+                        b'cpu cores' in current_info):
+                    mapping[current_info[b'physical id']] = \
+                        current_info[b'cpu cores']
+                current_info = {}
+            else:
+                # ongoing section
+                if (line.startswith(b'physical id') or
+                        line.startswith(b'cpu cores')):
+                    key, value = line.split(b'\t:', 1)
+                    current_info[key] = int(value)
+
+    # mimic os.cpu_count()
+    return sum(mapping.values()) or None
+
+
+def cpu_stats():
+    """Return various CPU stats as a named tuple."""
+    with open_binary('%s/stat' % get_procfs_path()) as f:
+        ctx_switches = None
+        interrupts = None
+        soft_interrupts = None
+        for line in f:
+            if line.startswith(b'ctxt'):
+                ctx_switches = int(line.split()[1])
+            elif line.startswith(b'intr'):
+                interrupts = int(line.split()[1])
+            elif line.startswith(b'softirq'):
+                soft_interrupts = int(line.split()[1])
+            if ctx_switches is not None and soft_interrupts is not None \
+                    and interrupts is not None:
+                break
+    syscalls = 0
+    return _common.scpustats(
+        ctx_switches, interrupts, soft_interrupts, syscalls)
+
+
+if os.path.exists("/sys/devices/system/cpu/cpufreq") or \
+        os.path.exists("/sys/devices/system/cpu/cpu0/cpufreq"):
+    def cpu_freq():
+        """Return frequency metrics for all CPUs.
+        Contrarily to other OSes, Linux updates these values in
+        real-time.
+        """
+        # scaling_* files seem preferable to cpuinfo_*, see:
+        # http://unix.stackexchange.com/a/87537/168884
+        ret = []
+        ls = glob.glob("/sys/devices/system/cpu/cpufreq/policy*")
+        if ls:
+            # Sort the list so that '10' comes after '2'. This should
+            # ensure the CPU order is consistent with other CPU functions
+            # having a 'percpu' argument and returning results for multiple
+            # CPUs (cpu_times(), cpu_percent(), cpu_times_percent()).
+            ls.sort(key=lambda x: int(os.path.basename(x)[6:]))
+        else:
+            # https://github.com/giampaolo/psutil/issues/981
+            ls = glob.glob("/sys/devices/system/cpu/cpu[0-9]*/cpufreq")
+            ls.sort(key=lambda x: int(re.search('[0-9]+', x).group(0)))
+
+        pjoin = os.path.join
+        for path in ls:
+            curr = cat(pjoin(path, "scaling_cur_freq"), fallback=None)
+            if curr is None:
+                # Likely an old RedHat, see:
+                # https://github.com/giampaolo/psutil/issues/1071
+                curr = cat(pjoin(path, "cpuinfo_cur_freq"), fallback=None)
+                if curr is None:
+                    raise NotImplementedError(
+                        "can't find current frequency file")
+            curr = int(curr) / 1000
+            max_ = int(cat(pjoin(path, "scaling_max_freq"))) / 1000
+            min_ = int(cat(pjoin(path, "scaling_min_freq"))) / 1000
+            ret.append(_common.scpufreq(curr, min_, max_))
+        return ret
+
+elif os.path.exists("/proc/cpuinfo"):
+    def cpu_freq():
+        """Alternate implementation using /proc/cpuinfo.
+        min and max frequencies are not available and are set to None.
+        """
+        ret = []
+        with open_binary('%s/cpuinfo' % get_procfs_path()) as f:
+            for line in f:
+                if line.lower().startswith(b'cpu mhz'):
+                    key, value = line.split(b'\t:', 1)
+                    ret.append(_common.scpufreq(float(value), None, None))
+        return ret
+
+
+# =====================================================================
+# --- network
+# =====================================================================
+
+
+net_if_addrs = cext_posix.net_if_addrs
+
+
+class _Ipv6UnsupportedError(Exception):
+    pass
+
+
+class Connections:
+    """A wrapper on top of /proc/net/* files, retrieving per-process
+    and system-wide open connections (TCP, UDP, UNIX) similarly to
+    "netstat -an".
+
+    Note: in case of UNIX sockets we're only able to determine the
+    local endpoint/path, not the one it's connected to.
+    According to [1] it would be possible but not easily.
+
+    [1] http://serverfault.com/a/417946
+    """
+
+    def __init__(self):
+        tcp4 = ("tcp", socket.AF_INET, socket.SOCK_STREAM)
+        tcp6 = ("tcp6", socket.AF_INET6, socket.SOCK_STREAM)
+        udp4 = ("udp", socket.AF_INET, socket.SOCK_DGRAM)
+        udp6 = ("udp6", socket.AF_INET6, socket.SOCK_DGRAM)
+        unix = ("unix", socket.AF_UNIX, None)
+        self.tmap = {
+            "all": (tcp4, tcp6, udp4, udp6, unix),
+            "tcp": (tcp4, tcp6),
+            "tcp4": (tcp4,),
+            "tcp6": (tcp6,),
+            "udp": (udp4, udp6),
+            "udp4": (udp4,),
+            "udp6": (udp6,),
+            "unix": (unix,),
+            "inet": (tcp4, tcp6, udp4, udp6),
+            "inet4": (tcp4, udp4),
+            "inet6": (tcp6, udp6),
+        }
+        self._procfs_path = None
+
+    def get_proc_inodes(self, pid):
+        inodes = defaultdict(list)
+        for fd in os.listdir("%s/%s/fd" % (self._procfs_path, pid)):
+            try:
+                inode = readlink("%s/%s/fd/%s" % (self._procfs_path, pid, fd))
+            except OSError as err:
+                # ENOENT == file which is gone in the meantime;
+                # os.stat('/proc/%s' % self.pid) will be done later
+                # to force NSP (if it's the case)
+                if err.errno in (errno.ENOENT, errno.ESRCH):
+                    continue
+                elif err.errno == errno.EINVAL:
+                    # not a link
+                    continue
+                else:
+                    raise
+            else:
+                if inode.startswith('socket:['):
+                    # the process is using a socket
+                    inode = inode[8:][:-1]
+                    inodes[inode].append((pid, int(fd)))
+        return inodes
+
+    def get_all_inodes(self):
+        inodes = {}
+        for pid in pids():
+            try:
+                inodes.update(self.get_proc_inodes(pid))
+            except OSError as err:
+                # os.listdir() is gonna raise a lot of access denied
+                # exceptions in case of unprivileged user; that's fine
+                # as we'll just end up returning a connection with PID
+                # and fd set to None anyway.
+                # Both netstat -an and lsof does the same so it's
+                # unlikely we can do any better.
+                # ENOENT just means a PID disappeared on us.
+                if err.errno not in (
+                        errno.ENOENT, errno.ESRCH, errno.EPERM, errno.EACCES):
+                    raise
+        return inodes
+
+    @staticmethod
+    def decode_address(addr, family):
+        """Accept an "ip:port" address as displayed in /proc/net/*
+        and convert it into a human readable form, like:
+
+        "0500000A:0016" -> ("10.0.0.5", 22)
+        "0000000000000000FFFF00000100007F:9E49" -> ("::ffff:127.0.0.1", 40521)
+
+        The IP address portion is a little or big endian four-byte
+        hexadecimal number; that is, the least significant byte is listed
+        first, so we need to reverse the order of the bytes to convert it
+        to an IP address.
+        The port is represented as a two-byte hexadecimal number.
+
+        Reference:
+        http://linuxdevcenter.com/pub/a/linux/2000/11/16/LinuxAdmin.html
+        """
+        ip, port = addr.split(':')
+        port = int(port, 16)
+        # this usually refers to a local socket in listen mode with
+        # no end-points connected
+        if not port:
+            return ()
+        if PY3:
+            ip = ip.encode('ascii')
+        if family == socket.AF_INET:
+            # see: https://github.com/giampaolo/psutil/issues/201
+            if LITTLE_ENDIAN:
+                ip = socket.inet_ntop(family, base64.b16decode(ip)[::-1])
+            else:
+                ip = socket.inet_ntop(family, base64.b16decode(ip))
+        else:  # IPv6
+            # old version - let's keep it, just in case...
+            # ip = ip.decode('hex')
+            # return socket.inet_ntop(socket.AF_INET6,
+            #          ''.join(ip[i:i+4][::-1] for i in xrange(0, 16, 4)))
+            ip = base64.b16decode(ip)
+            try:
+                # see: https://github.com/giampaolo/psutil/issues/201
+                if LITTLE_ENDIAN:
+                    ip = socket.inet_ntop(
+                        socket.AF_INET6,
+                        struct.pack('>4I', *struct.unpack('<4I', ip)))
+                else:
+                    ip = socket.inet_ntop(
+                        socket.AF_INET6,
+                        struct.pack('<4I', *struct.unpack('<4I', ip)))
+            except ValueError:
+                # see: https://github.com/giampaolo/psutil/issues/623
+                if not supports_ipv6():
+                    raise _Ipv6UnsupportedError
+                else:
+                    raise
+        return _common.addr(ip, port)
+
+    @staticmethod
+    def process_inet(file, family, type_, inodes, filter_pid=None):
+        """Parse /proc/net/tcp* and /proc/net/udp* files."""
+        if file.endswith('6') and not os.path.exists(file):
+            # IPv6 not supported
+            return
+        with open_text(file, buffering=BIGFILE_BUFFERING) as f:
+            f.readline()  # skip the first line
+            for lineno, line in enumerate(f, 1):
+                try:
+                    _, laddr, raddr, status, _, _, _, _, _, inode = \
+                        line.split()[:10]
+                except ValueError:
+                    raise RuntimeError(
+                        "error while parsing %s; malformed line %s %r" % (
+                            file, lineno, line))
+                if inode in inodes:
+                    # # We assume inet sockets are unique, so we error
+                    # # out if there are multiple references to the
+                    # # same inode. We won't do this for UNIX sockets.
+                    # if len(inodes[inode]) > 1 and family != socket.AF_UNIX:
+                    #     raise ValueError("ambiguos inode with multiple "
+                    #                      "PIDs references")
+                    pid, fd = inodes[inode][0]
+                else:
+                    pid, fd = None, -1
+                if filter_pid is not None and filter_pid != pid:
+                    continue
+                else:
+                    if type_ == socket.SOCK_STREAM:
+                        status = TCP_STATUSES[status]
+                    else:
+                        status = _common.CONN_NONE
+                    try:
+                        laddr = Connections.decode_address(laddr, family)
+                        raddr = Connections.decode_address(raddr, family)
+                    except _Ipv6UnsupportedError:
+                        continue
+                    yield (fd, family, type_, laddr, raddr, status, pid)
+
+    @staticmethod
+    def process_unix(file, family, inodes, filter_pid=None):
+        """Parse /proc/net/unix files."""
+        with open_text(file, buffering=BIGFILE_BUFFERING) as f:
+            f.readline()  # skip the first line
+            for line in f:
+                tokens = line.split()
+                try:
+                    _, _, _, _, type_, _, inode = tokens[0:7]
+                except ValueError:
+                    if ' ' not in line:
+                        # see: https://github.com/giampaolo/psutil/issues/766
+                        continue
+                    raise RuntimeError(
+                        "error while parsing %s; malformed line %r" % (
+                            file, line))
+                if inode in inodes:
+                    # With UNIX sockets we can have a single inode
+                    # referencing many file descriptors.
+                    pairs = inodes[inode]
+                else:
+                    pairs = [(None, -1)]
+                for pid, fd in pairs:
+                    if filter_pid is not None and filter_pid != pid:
+                        continue
+                    else:
+                        if len(tokens) == 8:
+                            path = tokens[-1]
+                        else:
+                            path = ""
+                        type_ = int(type_)
+                        # XXX: determining the remote endpoint of a
+                        # UNIX socket on Linux is not possible, see:
+                        # https://serverfault.com/questions/252723/
+                        raddr = ""
+                        status = _common.CONN_NONE
+                        yield (fd, family, type_, path, raddr, status, pid)
+
+    def retrieve(self, kind, pid=None):
+        if kind not in self.tmap:
+            raise ValueError("invalid %r kind argument; choose between %s"
+                             % (kind, ', '.join([repr(x) for x in self.tmap])))
+        self._procfs_path = get_procfs_path()
+        if pid is not None:
+            inodes = self.get_proc_inodes(pid)
+            if not inodes:
+                # no connections for this process
+                return []
+        else:
+            inodes = self.get_all_inodes()
+        ret = set()
+        for f, family, type_ in self.tmap[kind]:
+            if family in (socket.AF_INET, socket.AF_INET6):
+                ls = self.process_inet(
+                    "%s/net/%s" % (self._procfs_path, f),
+                    family, type_, inodes, filter_pid=pid)
+            else:
+                ls = self.process_unix(
+                    "%s/net/%s" % (self._procfs_path, f),
+                    family, inodes, filter_pid=pid)
+            for fd, family, type_, laddr, raddr, status, bound_pid in ls:
+                if pid:
+                    conn = _common.pconn(fd, family, type_, laddr, raddr,
+                                         status)
+                else:
+                    conn = _common.sconn(fd, family, type_, laddr, raddr,
+                                         status, bound_pid)
+                ret.add(conn)
+        return list(ret)
+
+
+_connections = Connections()
+
+
+def net_connections(kind='inet'):
+    """Return system-wide open connections."""
+    return _connections.retrieve(kind)
+
+
+def net_io_counters():
+    """Return network I/O statistics for every network interface
+    installed on the system as a dict of raw tuples.
+    """
+    with open_text("%s/net/dev" % get_procfs_path()) as f:
+        lines = f.readlines()
+    retdict = {}
+    for line in lines[2:]:
+        colon = line.rfind(':')
+        assert colon > 0, repr(line)
+        name = line[:colon].strip()
+        fields = line[colon + 1:].strip().split()
+
+        # in
+        (bytes_recv,
+         packets_recv,
+         errin,
+         dropin,
+         fifoin,  # unused
+         framein,  # unused
+         compressedin,  # unused
+         multicastin,  # unused
+         # out
+         bytes_sent,
+         packets_sent,
+         errout,
+         dropout,
+         fifoout,  # unused
+         collisionsout,  # unused
+         carrierout,  # unused
+         compressedout) = map(int, fields)
+
+        retdict[name] = (bytes_sent, bytes_recv, packets_sent, packets_recv,
+                         errin, errout, dropin, dropout)
+    return retdict
+
+
+def net_if_stats():
+    """Get NIC stats (isup, duplex, speed, mtu)."""
+    duplex_map = {cext.DUPLEX_FULL: NIC_DUPLEX_FULL,
+                  cext.DUPLEX_HALF: NIC_DUPLEX_HALF,
+                  cext.DUPLEX_UNKNOWN: NIC_DUPLEX_UNKNOWN}
+    names = net_io_counters().keys()
+    ret = {}
+    for name in names:
+        try:
+            mtu = cext_posix.net_if_mtu(name)
+            isup = cext_posix.net_if_flags(name)
+            duplex, speed = cext.net_if_duplex_speed(name)
+        except OSError as err:
+            # https://github.com/giampaolo/psutil/issues/1279
+            if err.errno != errno.ENODEV:
+                raise
+        else:
+            ret[name] = _common.snicstats(isup, duplex_map[duplex], speed, mtu)
+    return ret
+
+
+# =====================================================================
+# --- disks
+# =====================================================================
+
+
+disk_usage = _psposix.disk_usage
+
+
+def disk_io_counters(perdisk=False):
+    """Return disk I/O statistics for every disk installed on the
+    system as a dict of raw tuples.
+    """
+    def read_procfs():
+        # OK, this is a bit confusing. The format of /proc/diskstats can
+        # have 3 variations.
+        # On Linux 2.4 each line has always 15 fields, e.g.:
+        # "3     0   8 hda 8 8 8 8 8 8 8 8 8 8 8"
+        # On Linux 2.6+ each line *usually* has 14 fields, and the disk
+        # name is in another position, like this:
+        # "3    0   hda 8 8 8 8 8 8 8 8 8 8 8"
+        # ...unless (Linux 2.6) the line refers to a partition instead
+        # of a disk, in which case the line has less fields (7):
+        # "3    1   hda1 8 8 8 8"
+        # 4.18+ has 4 fields added:
+        # "3    0   hda 8 8 8 8 8 8 8 8 8 8 8 0 0 0 0"
+        # See:
+        # https://www.kernel.org/doc/Documentation/iostats.txt
+        # https://www.kernel.org/doc/Documentation/ABI/testing/procfs-diskstats
+        with open_text("%s/diskstats" % get_procfs_path()) as f:
+            lines = f.readlines()
+        for line in lines:
+            fields = line.split()
+            flen = len(fields)
+            if flen == 15:
+                # Linux 2.4
+                name = fields[3]
+                reads = int(fields[2])
+                (reads_merged, rbytes, rtime, writes, writes_merged,
+                    wbytes, wtime, _, busy_time, _) = map(int, fields[4:14])
+            elif flen == 14 or flen == 18:
+                # Linux 2.6+, line referring to a disk
+                name = fields[2]
+                (reads, reads_merged, rbytes, rtime, writes, writes_merged,
+                    wbytes, wtime, _, busy_time, _) = map(int, fields[3:14])
+            elif flen == 7:
+                # Linux 2.6+, line referring to a partition
+                name = fields[2]
+                reads, rbytes, writes, wbytes = map(int, fields[3:])
+                rtime = wtime = reads_merged = writes_merged = busy_time = 0
+            else:
+                raise ValueError("not sure how to interpret line %r" % line)
+            yield (name, reads, writes, rbytes, wbytes, rtime, wtime,
+                   reads_merged, writes_merged, busy_time)
+
+    def read_sysfs():
+        for block in os.listdir('/sys/block'):
+            for root, _, files in os.walk(os.path.join('/sys/block', block)):
+                if 'stat' not in files:
+                    continue
+                with open_text(os.path.join(root, 'stat')) as f:
+                    fields = f.read().strip().split()
+                name = os.path.basename(root)
+                (reads, reads_merged, rbytes, rtime, writes, writes_merged,
+                    wbytes, wtime, _, busy_time, _) = map(int, fields)
+                yield (name, reads, writes, rbytes, wbytes, rtime,
+                       wtime, reads_merged, writes_merged, busy_time)
+
+    if os.path.exists('%s/diskstats' % get_procfs_path()):
+        gen = read_procfs()
+    elif os.path.exists('/sys/block'):
+        gen = read_sysfs()
+    else:
+        raise NotImplementedError(
+            "%s/diskstats nor /sys/block filesystem are available on this "
+            "system" % get_procfs_path())
+
+    retdict = {}
+    for entry in gen:
+        (name, reads, writes, rbytes, wbytes, rtime, wtime, reads_merged,
+            writes_merged, busy_time) = entry
+        if not perdisk and not is_storage_device(name):
+            # perdisk=False means we want to calculate totals so we skip
+            # partitions (e.g. 'sda1', 'nvme0n1p1') and only include
+            # base disk devices (e.g. 'sda', 'nvme0n1'). Base disks
+            # include a total of all their partitions + some extra size
+            # of their own:
+            #     $ cat /proc/diskstats
+            #     259       0 sda 10485760 ...
+            #     259       1 sda1 5186039 ...
+            #     259       1 sda2 5082039 ...
+            # See:
+            # https://github.com/giampaolo/psutil/pull/1313
+            continue
+
+        rbytes *= DISK_SECTOR_SIZE
+        wbytes *= DISK_SECTOR_SIZE
+        retdict[name] = (reads, writes, rbytes, wbytes, rtime, wtime,
+                         reads_merged, writes_merged, busy_time)
+
+    return retdict
+
+
+def disk_partitions(all=False):
+    """Return mounted disk partitions as a list of namedtuples."""
+    fstypes = set()
+    procfs_path = get_procfs_path()
+    with open_text("%s/filesystems" % procfs_path) as f:
+        for line in f:
+            line = line.strip()
+            if not line.startswith("nodev"):
+                fstypes.add(line.strip())
+            else:
+                # ignore all lines starting with "nodev" except "nodev zfs"
+                fstype = line.split("\t")[1]
+                if fstype == "zfs":
+                    fstypes.add("zfs")
+
+    # See: https://github.com/giampaolo/psutil/issues/1307
+    if procfs_path == "/proc":
+        mtab_path = os.path.realpath("/etc/mtab")
+    else:
+        mtab_path = os.path.realpath("%s/self/mounts" % procfs_path)
+
+    retlist = []
+    partitions = cext.disk_partitions(mtab_path)
+    for partition in partitions:
+        device, mountpoint, fstype, opts = partition
+        if device == 'none':
+            device = ''
+        if not all:
+            if device == '' or fstype not in fstypes:
+                continue
+        ntuple = _common.sdiskpart(device, mountpoint, fstype, opts)
+        retlist.append(ntuple)
+    return retlist
+
+
+# =====================================================================
+# --- sensors
+# =====================================================================
+
+
+def sensors_temperatures():
+    """Return hardware (CPU and others) temperatures as a dict
+    including hardware name, label, current, max and critical
+    temperatures.
+
+    Implementation notes:
+    - /sys/class/hwmon looks like the most recent interface to
+      retrieve this info, and this implementation relies on it
+      only (old distros will probably use something else)
+    - lm-sensors on Ubuntu 16.04 relies on /sys/class/hwmon
+    - /sys/class/thermal/thermal_zone* is another one but it's more
+      difficult to parse
+    """
+    ret = collections.defaultdict(list)
+    basenames = glob.glob('/sys/class/hwmon/hwmon*/temp*_*')
+    # CentOS has an intermediate /device directory:
+    # https://github.com/giampaolo/psutil/issues/971
+    # https://github.com/nicolargo/glances/issues/1060
+    basenames.extend(glob.glob('/sys/class/hwmon/hwmon*/device/temp*_*'))
+    basenames = sorted(set([x.split('_')[0] for x in basenames]))
+
+    for base in basenames:
+        try:
+            path = base + '_input'
+            current = float(cat(path)) / 1000.0
+            path = os.path.join(os.path.dirname(base), 'name')
+            unit_name = cat(path, binary=False)
+        except (IOError, OSError, ValueError) as err:
+            # A lot of things can go wrong here, so let's just skip the
+            # whole entry. Sure thing is Linux's /sys/class/hwmon really
+            # is a stinky broken mess.
+            # https://github.com/giampaolo/psutil/issues/1009
+            # https://github.com/giampaolo/psutil/issues/1101
+            # https://github.com/giampaolo/psutil/issues/1129
+            # https://github.com/giampaolo/psutil/issues/1245
+            # https://github.com/giampaolo/psutil/issues/1323
+            warnings.warn("ignoring %r for file %r" % (err, path),
+                          RuntimeWarning)
+            continue
+
+        high = cat(base + '_max', fallback=None)
+        critical = cat(base + '_crit', fallback=None)
+        label = cat(base + '_label', fallback='', binary=False)
+
+        if high is not None:
+            try:
+                high = float(high) / 1000.0
+            except ValueError:
+                high = None
+        if critical is not None:
+            try:
+                critical = float(critical) / 1000.0
+            except ValueError:
+                critical = None
+
+        ret[unit_name].append((label, current, high, critical))
+
+    # Indication that no sensors were detected in /sys/class/hwmon/
+    if not basenames:
+        basenames = glob.glob('/sys/class/thermal/thermal_zone*')
+        basenames = sorted(set(basenames))
+
+        for base in basenames:
+            try:
+                path = os.path.join(base, 'temp')
+                current = float(cat(path)) / 1000.0
+                path = os.path.join(base, 'type')
+                unit_name = cat(path, binary=False)
+            except (IOError, OSError, ValueError) as err:
+                warnings.warn("ignoring %r for file %r" % (err, path),
+                              RuntimeWarning)
+                continue
+
+            trip_paths = glob.glob(base + '/trip_point*')
+            trip_points = set(['_'.join(
+                os.path.basename(p).split('_')[0:3]) for p in trip_paths])
+            critical = None
+            high = None
+            for trip_point in trip_points:
+                path = os.path.join(base, trip_point + "_type")
+                trip_type = cat(path, fallback='', binary=False)
+                if trip_type == 'critical':
+                    critical = cat(os.path.join(base, trip_point + "_temp"),
+                                   fallback=None)
+                elif trip_type == 'high':
+                    high = cat(os.path.join(base, trip_point + "_temp"),
+                               fallback=None)
+
+                if high is not None:
+                    try:
+                        high = float(high) / 1000.0
+                    except ValueError:
+                        high = None
+                if critical is not None:
+                    try:
+                        critical = float(critical) / 1000.0
+                    except ValueError:
+                        critical = None
+
+            ret[unit_name].append(('', current, high, critical))
+
+    return dict(ret)
+
+
+def sensors_fans():
+    """Return hardware fans info (for CPU and other peripherals) as a
+    dict including hardware label and current speed.
+
+    Implementation notes:
+    - /sys/class/hwmon looks like the most recent interface to
+      retrieve this info, and this implementation relies on it
+      only (old distros will probably use something else)
+    - lm-sensors on Ubuntu 16.04 relies on /sys/class/hwmon
+    """
+    ret = collections.defaultdict(list)
+    basenames = glob.glob('/sys/class/hwmon/hwmon*/fan*_*')
+    if not basenames:
+        # CentOS has an intermediate /device directory:
+        # https://github.com/giampaolo/psutil/issues/971
+        basenames = glob.glob('/sys/class/hwmon/hwmon*/device/fan*_*')
+
+    basenames = sorted(set([x.split('_')[0] for x in basenames]))
+    for base in basenames:
+        try:
+            current = int(cat(base + '_input'))
+        except (IOError, OSError) as err:
+            warnings.warn("ignoring %r" % err, RuntimeWarning)
+            continue
+        unit_name = cat(os.path.join(os.path.dirname(base), 'name'),
+                        binary=False)
+        label = cat(base + '_label', fallback='', binary=False)
+        ret[unit_name].append(_common.sfan(label, current))
+
+    return dict(ret)
+
+
+def sensors_battery():
+    """Return battery information.
+    Implementation note: it appears /sys/class/power_supply/BAT0/
+    directory structure may vary and provide files with the same
+    meaning but under different names, see:
+    https://github.com/giampaolo/psutil/issues/966
+    """
+    null = object()
+
+    def multi_cat(*paths):
+        """Attempt to read the content of multiple files which may
+        not exist. If none of them exist return None.
+        """
+        for path in paths:
+            ret = cat(path, fallback=null)
+            if ret != null:
+                return int(ret) if ret.isdigit() else ret
+        return None
+
+    bats = [x for x in os.listdir(POWER_SUPPLY_PATH) if x.startswith('BAT')]
+    if not bats:
+        return None
+    # Get the first available battery. Usually this is "BAT0", except
+    # some rare exceptions:
+    # https://github.com/giampaolo/psutil/issues/1238
+    root = os.path.join(POWER_SUPPLY_PATH, sorted(bats)[0])
+
+    # Base metrics.
+    energy_now = multi_cat(
+        root + "/energy_now",
+        root + "/charge_now")
+    power_now = multi_cat(
+        root + "/power_now",
+        root + "/current_now")
+    energy_full = multi_cat(
+        root + "/energy_full",
+        root + "/charge_full")
+    if energy_now is None or power_now is None:
+        return None
+
+    # Percent. If we have energy_full the percentage will be more
+    # accurate compared to reading /capacity file (float vs. int).
+    if energy_full is not None:
+        try:
+            percent = 100.0 * energy_now / energy_full
+        except ZeroDivisionError:
+            percent = 0.0
+    else:
+        percent = int(cat(root + "/capacity", fallback=-1))
+        if percent == -1:
+            return None
+
+    # Is AC power cable plugged in?
+    # Note: AC0 is not always available and sometimes (e.g. CentOS7)
+    # it's called "AC".
+    power_plugged = None
+    online = multi_cat(
+        os.path.join(POWER_SUPPLY_PATH, "AC0/online"),
+        os.path.join(POWER_SUPPLY_PATH, "AC/online"))
+    if online is not None:
+        power_plugged = online == 1
+    else:
+        status = cat(root + "/status", fallback="", binary=False).lower()
+        if status == "discharging":
+            power_plugged = False
+        elif status in ("charging", "full"):
+            power_plugged = True
+
+    # Seconds left.
+    # Note to self: we may also calculate the charging ETA as per:
+    # https://github.com/thialfihar/dotfiles/blob/
+    #     013937745fd9050c30146290e8f963d65c0179e6/bin/battery.py#L55
+    if power_plugged:
+        secsleft = _common.POWER_TIME_UNLIMITED
+    else:
+        try:
+            secsleft = int(energy_now / power_now * 3600)
+        except ZeroDivisionError:
+            secsleft = _common.POWER_TIME_UNKNOWN
+
+    return _common.sbattery(percent, secsleft, power_plugged)
+
+
+# =====================================================================
+# --- other system functions
+# =====================================================================
+
+
+def users():
+    """Return currently connected users as a list of namedtuples."""
+    retlist = []
+    rawlist = cext.users()
+    for item in rawlist:
+        user, tty, hostname, tstamp, user_process, pid = item
+        # note: the underlying C function includes entries about
+        # system boot, run level and others.  We might want
+        # to use them in the future.
+        if not user_process:
+            continue
+        if hostname in (':0.0', ':0'):
+            hostname = 'localhost'
+        nt = _common.suser(user, tty or None, hostname, tstamp, pid)
+        retlist.append(nt)
+    return retlist
+
+
+def boot_time():
+    """Return the system boot time expressed in seconds since the epoch."""
+    global BOOT_TIME
+    path = '%s/stat' % get_procfs_path()
+    with open_binary(path) as f:
+        for line in f:
+            if line.startswith(b'btime'):
+                ret = float(line.strip().split()[1])
+                BOOT_TIME = ret
+                return ret
+        raise RuntimeError(
+            "line 'btime' not found in %s" % path)
+
+
+# =====================================================================
+# --- processes
+# =====================================================================
+
+
+def pids():
+    """Returns a list of PIDs currently running on the system."""
+    return [int(x) for x in os.listdir(b(get_procfs_path())) if x.isdigit()]
+
+
+def pid_exists(pid):
+    """Check for the existence of a unix PID. Linux TIDs are not
+    supported (always return False).
+    """
+    if not _psposix.pid_exists(pid):
+        return False
+    else:
+        # Linux's apparently does not distinguish between PIDs and TIDs
+        # (thread IDs).
+        # listdir("/proc") won't show any TID (only PIDs) but
+        # os.stat("/proc/{tid}") will succeed if {tid} exists.
+        # os.kill() can also be passed a TID. This is quite confusing.
+        # In here we want to enforce this distinction and support PIDs
+        # only, see:
+        # https://github.com/giampaolo/psutil/issues/687
+        try:
+            # Note: already checked that this is faster than using a
+            # regular expr. Also (a lot) faster than doing
+            # 'return pid in pids()'
+            path = "%s/%s/status" % (get_procfs_path(), pid)
+            with open_binary(path) as f:
+                for line in f:
+                    if line.startswith(b"Tgid:"):
+                        tgid = int(line.split()[1])
+                        # If tgid and pid are the same then we're
+                        # dealing with a process PID.
+                        return tgid == pid
+                raise ValueError("'Tgid' line not found in %s" % path)
+        except (EnvironmentError, ValueError):
+            return pid in pids()
+
+
+def ppid_map():
+    """Obtain a {pid: ppid, ...} dict for all running processes in
+    one shot. Used to speed up Process.children().
+    """
+    ret = {}
+    procfs_path = get_procfs_path()
+    for pid in pids():
+        try:
+            with open_binary("%s/%s/stat" % (procfs_path, pid)) as f:
+                data = f.read()
+        except EnvironmentError as err:
+            # Note: we should be able to access /stat for all processes
+            # aka it's unlikely we'll bump into EPERM, which is good.
+            if err.errno not in (errno.ENOENT, errno.ESRCH):
+                raise
+        else:
+            rpar = data.rfind(b')')
+            dset = data[rpar + 2:].split()
+            ppid = int(dset[1])
+            ret[pid] = ppid
+    return ret
+
+
+def wrap_exceptions(fun):
+    """Decorator which translates bare OSError and IOError exceptions
+    into NoSuchProcess and AccessDenied.
+    """
+    @functools.wraps(fun)
+    def wrapper(self, *args, **kwargs):
+        try:
+            return fun(self, *args, **kwargs)
+        except EnvironmentError as err:
+            if err.errno in (errno.EPERM, errno.EACCES):
+                raise AccessDenied(self.pid, self._name)
+            # ESRCH (no such process) can be raised on read() if
+            # process is gone in the meantime.
+            if err.errno == errno.ESRCH:
+                raise NoSuchProcess(self.pid, self._name)
+            # ENOENT (no such file or directory) can be raised on open().
+            if err.errno == errno.ENOENT and not os.path.exists("%s/%s" % (
+                    self._procfs_path, self.pid)):
+                raise NoSuchProcess(self.pid, self._name)
+            # Note: zombies will keep existing under /proc until they're
+            # gone so there's no way to distinguish them in here.
+            raise
+    return wrapper
+
+
+class Process(object):
+    """Linux process implementation."""
+
+    __slots__ = ["pid", "_name", "_ppid", "_procfs_path", "_cache"]
+
+    def __init__(self, pid):
+        self.pid = pid
+        self._name = None
+        self._ppid = None
+        self._procfs_path = get_procfs_path()
+
+    def _assert_alive(self):
+        """Raise NSP if the process disappeared on us."""
+        # For those C function who do not raise NSP, possibly returning
+        # incorrect or incomplete result.
+        os.stat('%s/%s' % (self._procfs_path, self.pid))
+
+    @wrap_exceptions
+    @memoize_when_activated
+    def _parse_stat_file(self):
+        """Parse /proc/{pid}/stat file and return a dict with various
+        process info.
+        Using "man proc" as a reference: where "man proc" refers to
+        position N always substract 3 (e.g ppid position 4 in
+        'man proc' == position 1 in here).
+        The return value is cached in case oneshot() ctx manager is
+        in use.
+        """
+        with open_binary("%s/%s/stat" % (self._procfs_path, self.pid)) as f:
+            data = f.read()
+        # Process name is between parentheses. It can contain spaces and
+        # other parentheses. This is taken into account by looking for
+        # the first occurrence of "(" and the last occurence of ")".
+        rpar = data.rfind(b')')
+        name = data[data.find(b'(') + 1:rpar]
+        fields = data[rpar + 2:].split()
+
+        ret = {}
+        ret['name'] = name
+        ret['status'] = fields[0]
+        ret['ppid'] = fields[1]
+        ret['ttynr'] = fields[4]
+        ret['utime'] = fields[11]
+        ret['stime'] = fields[12]
+        ret['children_utime'] = fields[13]
+        ret['children_stime'] = fields[14]
+        ret['create_time'] = fields[19]
+        ret['cpu_num'] = fields[36]
+
+        return ret
+
+    @wrap_exceptions
+    @memoize_when_activated
+    def _read_status_file(self):
+        """Read /proc/{pid}/stat file and return its content.
+        The return value is cached in case oneshot() ctx manager is
+        in use.
+        """
+        with open_binary("%s/%s/status" % (self._procfs_path, self.pid)) as f:
+            return f.read()
+
+    @wrap_exceptions
+    @memoize_when_activated
+    def _read_smaps_file(self):
+        with open_binary("%s/%s/smaps" % (self._procfs_path, self.pid),
+                         buffering=BIGFILE_BUFFERING) as f:
+            return f.read().strip()
+
+    def oneshot_enter(self):
+        self._parse_stat_file.cache_activate(self)
+        self._read_status_file.cache_activate(self)
+        self._read_smaps_file.cache_activate(self)
+
+    def oneshot_exit(self):
+        self._parse_stat_file.cache_deactivate(self)
+        self._read_status_file.cache_deactivate(self)
+        self._read_smaps_file.cache_deactivate(self)
+
+    @wrap_exceptions
+    def name(self):
+        name = self._parse_stat_file()['name']
+        if PY3:
+            name = decode(name)
+        # XXX - gets changed later and probably needs refactoring
+        return name
+
+    def exe(self):
+        try:
+            return readlink("%s/%s/exe" % (self._procfs_path, self.pid))
+        except OSError as err:
+            if err.errno in (errno.ENOENT, errno.ESRCH):
+                # no such file error; might be raised also if the
+                # path actually exists for system processes with
+                # low pids (about 0-20)
+                if os.path.lexists("%s/%s" % (self._procfs_path, self.pid)):
+                    return ""
+                else:
+                    if not pid_exists(self.pid):
+                        raise NoSuchProcess(self.pid, self._name)
+                    else:
+                        raise ZombieProcess(self.pid, self._name, self._ppid)
+            if err.errno in (errno.EPERM, errno.EACCES):
+                raise AccessDenied(self.pid, self._name)
+            raise
+
+    @wrap_exceptions
+    def cmdline(self):
+        with open_text("%s/%s/cmdline" % (self._procfs_path, self.pid)) as f:
+            data = f.read()
+        if not data:
+            # may happen in case of zombie process
+            return []
+        # 'man proc' states that args are separated by null bytes '\0'
+        # and last char is supposed to be a null byte. Nevertheless
+        # some processes may change their cmdline after being started
+        # (via setproctitle() or similar), they are usually not
+        # compliant with this rule and use spaces instead. Google
+        # Chrome process is an example. See:
+        # https://github.com/giampaolo/psutil/issues/1179
+        sep = '\x00' if data.endswith('\x00') else ' '
+        if data.endswith(sep):
+            data = data[:-1]
+        return [x for x in data.split(sep)]
+
+    @wrap_exceptions
+    def environ(self):
+        with open_text("%s/%s/environ" % (self._procfs_path, self.pid)) as f:
+            data = f.read()
+        return parse_environ_block(data)
+
+    @wrap_exceptions
+    def terminal(self):
+        tty_nr = int(self._parse_stat_file()['ttynr'])
+        tmap = _psposix.get_terminal_map()
+        try:
+            return tmap[tty_nr]
+        except KeyError:
+            return None
+
+    # May not be available on old kernels.
+    if os.path.exists('/proc/%s/io' % os.getpid()):
+        @wrap_exceptions
+        def io_counters(self):
+            fname = "%s/%s/io" % (self._procfs_path, self.pid)
+            fields = {}
+            with open_binary(fname) as f:
+                for line in f:
+                    # https://github.com/giampaolo/psutil/issues/1004
+                    line = line.strip()
+                    if line:
+                        try:
+                            name, value = line.split(b': ')
+                        except ValueError:
+                            # https://github.com/giampaolo/psutil/issues/1004
+                            continue
+                        else:
+                            fields[name] = int(value)
+            if not fields:
+                raise RuntimeError("%s file was empty" % fname)
+            try:
+                return pio(
+                    fields[b'syscr'],  # read syscalls
+                    fields[b'syscw'],  # write syscalls
+                    fields[b'read_bytes'],  # read bytes
+                    fields[b'write_bytes'],  # write bytes
+                    fields[b'rchar'],  # read chars
+                    fields[b'wchar'],  # write chars
+                )
+            except KeyError as err:
+                raise ValueError("%r field was not found in %s; found fields "
+                                 "are %r" % (err[0], fname, fields))
+
+    @wrap_exceptions
+    def cpu_times(self):
+        values = self._parse_stat_file()
+        utime = float(values['utime']) / CLOCK_TICKS
+        stime = float(values['stime']) / CLOCK_TICKS
+        children_utime = float(values['children_utime']) / CLOCK_TICKS
+        children_stime = float(values['children_stime']) / CLOCK_TICKS
+        return _common.pcputimes(utime, stime, children_utime, children_stime)
+
+    @wrap_exceptions
+    def cpu_num(self):
+        """What CPU the process is on."""
+        return int(self._parse_stat_file()['cpu_num'])
+
+    @wrap_exceptions
+    def wait(self, timeout=None):
+        return _psposix.wait_pid(self.pid, timeout, self._name)
+
+    @wrap_exceptions
+    def create_time(self):
+        ctime = float(self._parse_stat_file()['create_time'])
+        # According to documentation, starttime is in field 21 and the
+        # unit is jiffies (clock ticks).
+        # We first divide it for clock ticks and then add uptime returning
+        # seconds since the epoch, in UTC.
+        # Also use cached value if available.
+        bt = BOOT_TIME or boot_time()
+        return (ctime / CLOCK_TICKS) + bt
+
+    @wrap_exceptions
+    def memory_info(self):
+        #  ============================================================
+        # | FIELD  | DESCRIPTION                         | AKA  | TOP  |
+        #  ============================================================
+        # | rss    | resident set size                   |      | RES  |
+        # | vms    | total program size                  | size | VIRT |
+        # | shared | shared pages (from shared mappings) |      | SHR  |
+        # | text   | text ('code')                       | trs  | CODE |
+        # | lib    | library (unused in Linux 2.6)       | lrs  |      |
+        # | data   | data + stack                        | drs  | DATA |
+        # | dirty  | dirty pages (unused in Linux 2.6)   | dt   |      |
+        #  ============================================================
+        with open_binary("%s/%s/statm" % (self._procfs_path, self.pid)) as f:
+            vms, rss, shared, text, lib, data, dirty = \
+                [int(x) * PAGESIZE for x in f.readline().split()[:7]]
+        return pmem(rss, vms, shared, text, lib, data, dirty)
+
+    # /proc/pid/smaps does not exist on kernels < 2.6.14 or if
+    # CONFIG_MMU kernel configuration option is not enabled.
+    if HAS_SMAPS:
+
+        @wrap_exceptions
+        def memory_full_info(
+                self,
+                # Gets Private_Clean, Private_Dirty, Private_Hugetlb.
+                _private_re=re.compile(br"\nPrivate.*:\s+(\d+)"),
+                _pss_re=re.compile(br"\nPss\:\s+(\d+)"),
+                _swap_re=re.compile(br"\nSwap\:\s+(\d+)")):
+            basic_mem = self.memory_info()
+            # Note: using 3 regexes is faster than reading the file
+            # line by line.
+            # XXX: on Python 3 the 2 regexes are 30% slower than on
+            # Python 2 though. Figure out why.
+            #
+            # You might be tempted to calculate USS by subtracting
+            # the "shared" value from the "resident" value in
+            # /proc/<pid>/statm. But at least on Linux, statm's "shared"
+            # value actually counts pages backed by files, which has
+            # little to do with whether the pages are actually shared.
+            # /proc/self/smaps on the other hand appears to give us the
+            # correct information.
+            smaps_data = self._read_smaps_file()
+            # Note: smaps file can be empty for certain processes.
+            # The code below will not crash though and will result to 0.
+            uss = sum(map(int, _private_re.findall(smaps_data))) * 1024
+            pss = sum(map(int, _pss_re.findall(smaps_data))) * 1024
+            swap = sum(map(int, _swap_re.findall(smaps_data))) * 1024
+            return pfullmem(*basic_mem + (uss, pss, swap))
+
+    else:
+        memory_full_info = memory_info
+
+    if HAS_SMAPS:
+
+        @wrap_exceptions
+        def memory_maps(self):
+            """Return process's mapped memory regions as a list of named
+            tuples. Fields are explained in 'man proc'; here is an updated
+            (Apr 2012) version: http://goo.gl/fmebo
+
+            /proc/{PID}/smaps does not exist on kernels < 2.6.14 or if
+            CONFIG_MMU kernel configuration option is not enabled.
+            """
+            def get_blocks(lines, current_block):
+                data = {}
+                for line in lines:
+                    fields = line.split(None, 5)
+                    if not fields[0].endswith(b':'):
+                        # new block section
+                        yield (current_block.pop(), data)
+                        current_block.append(line)
+                    else:
+                        try:
+                            data[fields[0]] = int(fields[1]) * 1024
+                        except ValueError:
+                            if fields[0].startswith(b'VmFlags:'):
+                                # see issue #369
+                                continue
+                            else:
+                                raise ValueError("don't know how to inte"
+                                                 "rpret line %r" % line)
+                yield (current_block.pop(), data)
+
+            data = self._read_smaps_file()
+            # Note: smaps file can be empty for certain processes.
+            if not data:
+                return []
+            lines = data.split(b'\n')
+            ls = []
+            first_line = lines.pop(0)
+            current_block = [first_line]
+            for header, data in get_blocks(lines, current_block):
+                hfields = header.split(None, 5)
+                try:
+                    addr, perms, offset, dev, inode, path = hfields
+                except ValueError:
+                    addr, perms, offset, dev, inode, path = \
+                        hfields + ['']
+                if not path:
+                    path = '[anon]'
+                else:
+                    if PY3:
+                        path = decode(path)
+                    path = path.strip()
+                    if (path.endswith(' (deleted)') and not
+                            path_exists_strict(path)):
+                        path = path[:-10]
+                ls.append((
+                    decode(addr), decode(perms), path,
+                    data[b'Rss:'],
+                    data.get(b'Size:', 0),
+                    data.get(b'Pss:', 0),
+                    data.get(b'Shared_Clean:', 0),
+                    data.get(b'Shared_Dirty:', 0),
+                    data.get(b'Private_Clean:', 0),
+                    data.get(b'Private_Dirty:', 0),
+                    data.get(b'Referenced:', 0),
+                    data.get(b'Anonymous:', 0),
+                    data.get(b'Swap:', 0)
+                ))
+            return ls
+
+    @wrap_exceptions
+    def cwd(self):
+        try:
+            return readlink("%s/%s/cwd" % (self._procfs_path, self.pid))
+        except OSError as err:
+            # https://github.com/giampaolo/psutil/issues/986
+            if err.errno in (errno.ENOENT, errno.ESRCH):
+                if not pid_exists(self.pid):
+                    raise NoSuchProcess(self.pid, self._name)
+                else:
+                    raise ZombieProcess(self.pid, self._name, self._ppid)
+            raise
+
+    @wrap_exceptions
+    def num_ctx_switches(self,
+                         _ctxsw_re=re.compile(br'ctxt_switches:\t(\d+)')):
+        data = self._read_status_file()
+        ctxsw = _ctxsw_re.findall(data)
+        if not ctxsw:
+            raise NotImplementedError(
+                "'voluntary_ctxt_switches' and 'nonvoluntary_ctxt_switches'"
+                "lines were not found in %s/%s/status; the kernel is "
+                "probably older than 2.6.23" % (
+                    self._procfs_path, self.pid))
+        else:
+            return _common.pctxsw(int(ctxsw[0]), int(ctxsw[1]))
+
+    @wrap_exceptions
+    def num_threads(self, _num_threads_re=re.compile(br'Threads:\t(\d+)')):
+        # Note: on Python 3 using a re is faster than iterating over file
+        # line by line. On Python 2 is the exact opposite, and iterating
+        # over a file on Python 3 is slower than on Python 2.
+        data = self._read_status_file()
+        return int(_num_threads_re.findall(data)[0])
+
+    @wrap_exceptions
+    def threads(self):
+        thread_ids = os.listdir("%s/%s/task" % (self._procfs_path, self.pid))
+        thread_ids.sort()
+        retlist = []
+        hit_enoent = False
+        for thread_id in thread_ids:
+            fname = "%s/%s/task/%s/stat" % (
+                self._procfs_path, self.pid, thread_id)
+            try:
+                with open_binary(fname) as f:
+                    st = f.read().strip()
+            except IOError as err:
+                if err.errno == errno.ENOENT:
+                    # no such file or directory; it means thread
+                    # disappeared on us
+                    hit_enoent = True
+                    continue
+                raise
+            # ignore the first two values ("pid (exe)")
+            st = st[st.find(b')') + 2:]
+            values = st.split(b' ')
+            utime = float(values[11]) / CLOCK_TICKS
+            stime = float(values[12]) / CLOCK_TICKS
+            ntuple = _common.pthread(int(thread_id), utime, stime)
+            retlist.append(ntuple)
+        if hit_enoent:
+            self._assert_alive()
+        return retlist
+
+    @wrap_exceptions
+    def nice_get(self):
+        # with open_text('%s/%s/stat' % (self._procfs_path, self.pid)) as f:
+        #   data = f.read()
+        #   return int(data.split()[18])
+
+        # Use C implementation
+        return cext_posix.getpriority(self.pid)
+
+    @wrap_exceptions
+    def nice_set(self, value):
+        return cext_posix.setpriority(self.pid, value)
+
+    @wrap_exceptions
+    def cpu_affinity_get(self):
+        return cext.proc_cpu_affinity_get(self.pid)
+
+    def _get_eligible_cpus(
+            self, _re=re.compile(br"Cpus_allowed_list:\t(\d+)-(\d+)")):
+        # See: https://github.com/giampaolo/psutil/issues/956
+        data = self._read_status_file()
+        match = _re.findall(data)
+        if match:
+            return list(range(int(match[0][0]), int(match[0][1]) + 1))
+        else:
+            return list(range(len(per_cpu_times())))
+
+    @wrap_exceptions
+    def cpu_affinity_set(self, cpus):
+        try:
+            cext.proc_cpu_affinity_set(self.pid, cpus)
+        except (OSError, ValueError) as err:
+            if isinstance(err, ValueError) or err.errno == errno.EINVAL:
+                eligible_cpus = self._get_eligible_cpus()
+                all_cpus = tuple(range(len(per_cpu_times())))
+                for cpu in cpus:
+                    if cpu not in all_cpus:
+                        raise ValueError(
+                            "invalid CPU number %r; choose between %s" % (
+                                cpu, eligible_cpus))
+                    if cpu not in eligible_cpus:
+                        raise ValueError(
+                            "CPU number %r is not eligible; choose "
+                            "between %s" % (cpu, eligible_cpus))
+            raise
+
+    # only starting from kernel 2.6.13
+    if HAS_PROC_IO_PRIORITY:
+
+        @wrap_exceptions
+        def ionice_get(self):
+            ioclass, value = cext.proc_ioprio_get(self.pid)
+            if enum is not None:
+                ioclass = IOPriority(ioclass)
+            return _common.pionice(ioclass, value)
+
+        @wrap_exceptions
+        def ionice_set(self, ioclass, value):
+            if value is not None:
+                if not PY3 and not isinstance(value, (int, long)):
+                    msg = "value argument is not an integer (gor %r)" % value
+                    raise TypeError(msg)
+                if not 0 <= value <= 7:
+                    raise ValueError(
+                        "value argument range expected is between 0 and 7")
+
+            if ioclass in (IOPRIO_CLASS_NONE, None):
+                if value:
+                    msg = "can't specify value with IOPRIO_CLASS_NONE " \
+                          "(got %r)" % value
+                    raise ValueError(msg)
+                ioclass = IOPRIO_CLASS_NONE
+                value = 0
+            elif ioclass == IOPRIO_CLASS_IDLE:
+                if value:
+                    msg = "can't specify value with IOPRIO_CLASS_IDLE " \
+                          "(got %r)" % value
+                    raise ValueError(msg)
+                value = 0
+            elif ioclass in (IOPRIO_CLASS_RT, IOPRIO_CLASS_BE):
+                if value is None:
+                    # TODO: add comment explaining why this is 4 (?)
+                    value = 4
+            else:
+                # otherwise we would get OSError(EVINAL)
+                raise ValueError("invalid ioclass argument %r" % ioclass)
+
+            return cext.proc_ioprio_set(self.pid, ioclass, value)
+
+    if HAS_PRLIMIT:
+
+        @wrap_exceptions
+        def rlimit(self, resource, limits=None):
+            # If pid is 0 prlimit() applies to the calling process and
+            # we don't want that. We should never get here though as
+            # PID 0 is not supported on Linux.
+            if self.pid == 0:
+                raise ValueError("can't use prlimit() against PID 0 process")
+            try:
+                if limits is None:
+                    # get
+                    return cext.linux_prlimit(self.pid, resource)
+                else:
+                    # set
+                    if len(limits) != 2:
+                        raise ValueError(
+                            "second argument must be a (soft, hard) tuple, "
+                            "got %s" % repr(limits))
+                    soft, hard = limits
+                    cext.linux_prlimit(self.pid, resource, soft, hard)
+            except OSError as err:
+                if err.errno == errno.ENOSYS and pid_exists(self.pid):
+                    # I saw this happening on Travis:
+                    # https://travis-ci.org/giampaolo/psutil/jobs/51368273
+                    raise ZombieProcess(self.pid, self._name, self._ppid)
+                else:
+                    raise
+
+    @wrap_exceptions
+    def status(self):
+        letter = self._parse_stat_file()['status']
+        if PY3:
+            letter = letter.decode()
+        # XXX is '?' legit? (we're not supposed to return it anyway)
+        return PROC_STATUSES.get(letter, '?')
+
+    @wrap_exceptions
+    def open_files(self):
+        retlist = []
+        files = os.listdir("%s/%s/fd" % (self._procfs_path, self.pid))
+        hit_enoent = False
+        for fd in files:
+            file = "%s/%s/fd/%s" % (self._procfs_path, self.pid, fd)
+            try:
+                path = readlink(file)
+            except OSError as err:
+                # ENOENT == file which is gone in the meantime
+                if err.errno in (errno.ENOENT, errno.ESRCH):
+                    hit_enoent = True
+                    continue
+                elif err.errno == errno.EINVAL:
+                    # not a link
+                    continue
+                else:
+                    raise
+            else:
+                # If path is not an absolute there's no way to tell
+                # whether it's a regular file or not, so we skip it.
+                # A regular file is always supposed to be have an
+                # absolute path though.
+                if path.startswith('/') and isfile_strict(path):
+                    # Get file position and flags.
+                    file = "%s/%s/fdinfo/%s" % (
+                        self._procfs_path, self.pid, fd)
+                    try:
+                        with open_binary(file) as f:
+                            pos = int(f.readline().split()[1])
+                            flags = int(f.readline().split()[1], 8)
+                    except IOError as err:
+                        if err.errno == errno.ENOENT:
+                            # fd gone in the meantime; process may
+                            # still be alive
+                            hit_enoent = True
+                        else:
+                            raise
+                    else:
+                        mode = file_flags_to_mode(flags)
+                        ntuple = popenfile(
+                            path, int(fd), int(pos), mode, flags)
+                        retlist.append(ntuple)
+        if hit_enoent:
+            self._assert_alive()
+        return retlist
+
+    @wrap_exceptions
+    def connections(self, kind='inet'):
+        ret = _connections.retrieve(kind, self.pid)
+        self._assert_alive()
+        return ret
+
+    @wrap_exceptions
+    def num_fds(self):
+        return len(os.listdir("%s/%s/fd" % (self._procfs_path, self.pid)))
+
+    @wrap_exceptions
+    def ppid(self):
+        return int(self._parse_stat_file()['ppid'])
+
+    @wrap_exceptions
+    def uids(self, _uids_re=re.compile(br'Uid:\t(\d+)\t(\d+)\t(\d+)')):
+        data = self._read_status_file()
+        real, effective, saved = _uids_re.findall(data)[0]
+        return _common.puids(int(real), int(effective), int(saved))
+
+    @wrap_exceptions
+    def gids(self, _gids_re=re.compile(br'Gid:\t(\d+)\t(\d+)\t(\d+)')):
+        data = self._read_status_file()
+        real, effective, saved = _gids_re.findall(data)[0]
+        return _common.pgids(int(real), int(effective), int(saved))
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_psosx.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_psosx.py
new file mode 100644
index 00000000..7459a0f3
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_psosx.py
@@ -0,0 +1,578 @@
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""macOS platform implementation."""
+
+import contextlib
+import errno
+import functools
+import os
+from socket import AF_INET
+from collections import namedtuple
+
+from . import _common
+from . import _psposix
+from . import _psutil_osx as cext
+from . import _psutil_posix as cext_posix
+from ._common import AF_INET6
+from ._common import conn_tmap
+from ._common import isfile_strict
+from ._common import memoize_when_activated
+from ._common import parse_environ_block
+from ._common import sockfam_to_enum
+from ._common import socktype_to_enum
+from ._common import usage_percent
+
+
+__extra__all__ = []
+
+
+# =====================================================================
+# --- globals
+# =====================================================================
+
+
+PAGESIZE = os.sysconf("SC_PAGE_SIZE")
+AF_LINK = cext_posix.AF_LINK
+
+TCP_STATUSES = {
+    cext.TCPS_ESTABLISHED: _common.CONN_ESTABLISHED,
+    cext.TCPS_SYN_SENT: _common.CONN_SYN_SENT,
+    cext.TCPS_SYN_RECEIVED: _common.CONN_SYN_RECV,
+    cext.TCPS_FIN_WAIT_1: _common.CONN_FIN_WAIT1,
+    cext.TCPS_FIN_WAIT_2: _common.CONN_FIN_WAIT2,
+    cext.TCPS_TIME_WAIT: _common.CONN_TIME_WAIT,
+    cext.TCPS_CLOSED: _common.CONN_CLOSE,
+    cext.TCPS_CLOSE_WAIT: _common.CONN_CLOSE_WAIT,
+    cext.TCPS_LAST_ACK: _common.CONN_LAST_ACK,
+    cext.TCPS_LISTEN: _common.CONN_LISTEN,
+    cext.TCPS_CLOSING: _common.CONN_CLOSING,
+    cext.PSUTIL_CONN_NONE: _common.CONN_NONE,
+}
+
+PROC_STATUSES = {
+    cext.SIDL: _common.STATUS_IDLE,
+    cext.SRUN: _common.STATUS_RUNNING,
+    cext.SSLEEP: _common.STATUS_SLEEPING,
+    cext.SSTOP: _common.STATUS_STOPPED,
+    cext.SZOMB: _common.STATUS_ZOMBIE,
+}
+
+kinfo_proc_map = dict(
+    ppid=0,
+    ruid=1,
+    euid=2,
+    suid=3,
+    rgid=4,
+    egid=5,
+    sgid=6,
+    ttynr=7,
+    ctime=8,
+    status=9,
+    name=10,
+)
+
+pidtaskinfo_map = dict(
+    cpuutime=0,
+    cpustime=1,
+    rss=2,
+    vms=3,
+    pfaults=4,
+    pageins=5,
+    numthreads=6,
+    volctxsw=7,
+)
+
+# These objects get set on "import psutil" from the __init__.py
+# file, see: https://github.com/giampaolo/psutil/issues/1402
+NoSuchProcess = None
+ZombieProcess = None
+AccessDenied = None
+TimeoutExpired = None
+
+
+# =====================================================================
+# --- named tuples
+# =====================================================================
+
+
+# psutil.cpu_times()
+scputimes = namedtuple('scputimes', ['user', 'nice', 'system', 'idle'])
+# psutil.virtual_memory()
+svmem = namedtuple(
+    'svmem', ['total', 'available', 'percent', 'used', 'free',
+              'active', 'inactive', 'wired'])
+# psutil.Process.memory_info()
+pmem = namedtuple('pmem', ['rss', 'vms', 'pfaults', 'pageins'])
+# psutil.Process.memory_full_info()
+pfullmem = namedtuple('pfullmem', pmem._fields + ('uss', ))
+
+
+# =====================================================================
+# --- memory
+# =====================================================================
+
+
+def virtual_memory():
+    """System virtual memory as a namedtuple."""
+    total, active, inactive, wired, free, speculative = cext.virtual_mem()
+    # This is how Zabbix calculate avail and used mem:
+    # https://github.com/zabbix/zabbix/blob/trunk/src/libs/zbxsysinfo/
+    #     osx/memory.c
+    # Also see: https://github.com/giampaolo/psutil/issues/1277
+    avail = inactive + free
+    used = active + wired
+    # This is NOT how Zabbix calculates free mem but it matches "free"
+    # cmdline utility.
+    free -= speculative
+    percent = usage_percent((total - avail), total, round_=1)
+    return svmem(total, avail, percent, used, free,
+                 active, inactive, wired)
+
+
+def swap_memory():
+    """Swap system memory as a (total, used, free, sin, sout) tuple."""
+    total, used, free, sin, sout = cext.swap_mem()
+    percent = usage_percent(used, total, round_=1)
+    return _common.sswap(total, used, free, percent, sin, sout)
+
+
+# =====================================================================
+# --- CPU
+# =====================================================================
+
+
+def cpu_times():
+    """Return system CPU times as a namedtuple."""
+    user, nice, system, idle = cext.cpu_times()
+    return scputimes(user, nice, system, idle)
+
+
+def per_cpu_times():
+    """Return system CPU times as a named tuple"""
+    ret = []
+    for cpu_t in cext.per_cpu_times():
+        user, nice, system, idle = cpu_t
+        item = scputimes(user, nice, system, idle)
+        ret.append(item)
+    return ret
+
+
+def cpu_count_logical():
+    """Return the number of logical CPUs in the system."""
+    return cext.cpu_count_logical()
+
+
+def cpu_count_physical():
+    """Return the number of physical CPUs in the system."""
+    return cext.cpu_count_phys()
+
+
+def cpu_stats():
+    ctx_switches, interrupts, soft_interrupts, syscalls, traps = \
+        cext.cpu_stats()
+    return _common.scpustats(
+        ctx_switches, interrupts, soft_interrupts, syscalls)
+
+
+def cpu_freq():
+    """Return CPU frequency.
+    On macOS per-cpu frequency is not supported.
+    Also, the returned frequency never changes, see:
+    https://arstechnica.com/civis/viewtopic.php?f=19&t=465002
+    """
+    curr, min_, max_ = cext.cpu_freq()
+    return [_common.scpufreq(curr, min_, max_)]
+
+
+# =====================================================================
+# --- disks
+# =====================================================================
+
+
+disk_usage = _psposix.disk_usage
+disk_io_counters = cext.disk_io_counters
+
+
+def disk_partitions(all=False):
+    """Return mounted disk partitions as a list of namedtuples."""
+    retlist = []
+    partitions = cext.disk_partitions()
+    for partition in partitions:
+        device, mountpoint, fstype, opts = partition
+        if device == 'none':
+            device = ''
+        if not all:
+            if not os.path.isabs(device) or not os.path.exists(device):
+                continue
+        ntuple = _common.sdiskpart(device, mountpoint, fstype, opts)
+        retlist.append(ntuple)
+    return retlist
+
+
+# =====================================================================
+# --- sensors
+# =====================================================================
+
+
+def sensors_battery():
+    """Return battery information."""
+    try:
+        percent, minsleft, power_plugged = cext.sensors_battery()
+    except NotImplementedError:
+        # no power source - return None according to interface
+        return None
+    power_plugged = power_plugged == 1
+    if power_plugged:
+        secsleft = _common.POWER_TIME_UNLIMITED
+    elif minsleft == -1:
+        secsleft = _common.POWER_TIME_UNKNOWN
+    else:
+        secsleft = minsleft * 60
+    return _common.sbattery(percent, secsleft, power_plugged)
+
+
+# =====================================================================
+# --- network
+# =====================================================================
+
+
+net_io_counters = cext.net_io_counters
+net_if_addrs = cext_posix.net_if_addrs
+
+
+def net_connections(kind='inet'):
+    """System-wide network connections."""
+    # Note: on macOS this will fail with AccessDenied unless
+    # the process is owned by root.
+    ret = []
+    for pid in pids():
+        try:
+            cons = Process(pid).connections(kind)
+        except NoSuchProcess:
+            continue
+        else:
+            if cons:
+                for c in cons:
+                    c = list(c) + [pid]
+                    ret.append(_common.sconn(*c))
+    return ret
+
+
+def net_if_stats():
+    """Get NIC stats (isup, duplex, speed, mtu)."""
+    names = net_io_counters().keys()
+    ret = {}
+    for name in names:
+        try:
+            mtu = cext_posix.net_if_mtu(name)
+            isup = cext_posix.net_if_flags(name)
+            duplex, speed = cext_posix.net_if_duplex_speed(name)
+        except OSError as err:
+            # https://github.com/giampaolo/psutil/issues/1279
+            if err.errno != errno.ENODEV:
+                raise
+        else:
+            if hasattr(_common, 'NicDuplex'):
+                duplex = _common.NicDuplex(duplex)
+            ret[name] = _common.snicstats(isup, duplex, speed, mtu)
+    return ret
+
+
+# =====================================================================
+# --- other system functions
+# =====================================================================
+
+
+def boot_time():
+    """The system boot time expressed in seconds since the epoch."""
+    return cext.boot_time()
+
+
+def users():
+    """Return currently connected users as a list of namedtuples."""
+    retlist = []
+    rawlist = cext.users()
+    for item in rawlist:
+        user, tty, hostname, tstamp, pid = item
+        if tty == '~':
+            continue  # reboot or shutdown
+        if not tstamp:
+            continue
+        nt = _common.suser(user, tty or None, hostname or None, tstamp, pid)
+        retlist.append(nt)
+    return retlist
+
+
+# =====================================================================
+# --- processes
+# =====================================================================
+
+
+def pids():
+    ls = cext.pids()
+    if 0 not in ls:
+        # On certain macOS versions pids() C doesn't return PID 0 but
+        # "ps" does and the process is querable via sysctl():
+        # https://travis-ci.org/giampaolo/psutil/jobs/309619941
+        try:
+            Process(0).create_time()
+            ls.insert(0, 0)
+        except NoSuchProcess:
+            pass
+        except AccessDenied:
+            ls.insert(0, 0)
+    return ls
+
+
+pid_exists = _psposix.pid_exists
+
+
+def wrap_exceptions(fun):
+    """Decorator which translates bare OSError exceptions into
+    NoSuchProcess and AccessDenied.
+    """
+    @functools.wraps(fun)
+    def wrapper(self, *args, **kwargs):
+        try:
+            return fun(self, *args, **kwargs)
+        except OSError as err:
+            if err.errno == errno.ESRCH:
+                raise NoSuchProcess(self.pid, self._name)
+            if err.errno in (errno.EPERM, errno.EACCES):
+                raise AccessDenied(self.pid, self._name)
+            raise
+        except cext.ZombieProcessError:
+            raise ZombieProcess(self.pid, self._name, self._ppid)
+    return wrapper
+
+
+@contextlib.contextmanager
+def catch_zombie(proc):
+    """There are some poor C APIs which incorrectly raise ESRCH when
+    the process is still alive or it's a zombie, or even RuntimeError
+    (those who don't set errno). This is here in order to solve:
+    https://github.com/giampaolo/psutil/issues/1044
+    """
+    try:
+        yield
+    except (OSError, RuntimeError) as err:
+        if isinstance(err, RuntimeError) or err.errno == errno.ESRCH:
+            try:
+                # status() is not supposed to lie and correctly detect
+                # zombies so if it raises ESRCH it's true.
+                status = proc.status()
+            except NoSuchProcess:
+                raise err
+            else:
+                if status == _common.STATUS_ZOMBIE:
+                    raise ZombieProcess(proc.pid, proc._name, proc._ppid)
+                else:
+                    raise AccessDenied(proc.pid, proc._name)
+        else:
+            raise
+
+
+class Process(object):
+    """Wrapper class around underlying C implementation."""
+
+    __slots__ = ["pid", "_name", "_ppid", "_cache"]
+
+    def __init__(self, pid):
+        self.pid = pid
+        self._name = None
+        self._ppid = None
+
+    @wrap_exceptions
+    @memoize_when_activated
+    def _get_kinfo_proc(self):
+        # Note: should work with all PIDs without permission issues.
+        ret = cext.proc_kinfo_oneshot(self.pid)
+        assert len(ret) == len(kinfo_proc_map)
+        return ret
+
+    @wrap_exceptions
+    @memoize_when_activated
+    def _get_pidtaskinfo(self):
+        # Note: should work for PIDs owned by user only.
+        with catch_zombie(self):
+            ret = cext.proc_pidtaskinfo_oneshot(self.pid)
+        assert len(ret) == len(pidtaskinfo_map)
+        return ret
+
+    def oneshot_enter(self):
+        self._get_kinfo_proc.cache_activate(self)
+        self._get_pidtaskinfo.cache_activate(self)
+
+    def oneshot_exit(self):
+        self._get_kinfo_proc.cache_deactivate(self)
+        self._get_pidtaskinfo.cache_deactivate(self)
+
+    @wrap_exceptions
+    def name(self):
+        name = self._get_kinfo_proc()[kinfo_proc_map['name']]
+        return name if name is not None else cext.proc_name(self.pid)
+
+    @wrap_exceptions
+    def exe(self):
+        with catch_zombie(self):
+            return cext.proc_exe(self.pid)
+
+    @wrap_exceptions
+    def cmdline(self):
+        with catch_zombie(self):
+            return cext.proc_cmdline(self.pid)
+
+    @wrap_exceptions
+    def environ(self):
+        with catch_zombie(self):
+            return parse_environ_block(cext.proc_environ(self.pid))
+
+    @wrap_exceptions
+    def ppid(self):
+        self._ppid = self._get_kinfo_proc()[kinfo_proc_map['ppid']]
+        return self._ppid
+
+    @wrap_exceptions
+    def cwd(self):
+        with catch_zombie(self):
+            return cext.proc_cwd(self.pid)
+
+    @wrap_exceptions
+    def uids(self):
+        rawtuple = self._get_kinfo_proc()
+        return _common.puids(
+            rawtuple[kinfo_proc_map['ruid']],
+            rawtuple[kinfo_proc_map['euid']],
+            rawtuple[kinfo_proc_map['suid']])
+
+    @wrap_exceptions
+    def gids(self):
+        rawtuple = self._get_kinfo_proc()
+        return _common.puids(
+            rawtuple[kinfo_proc_map['rgid']],
+            rawtuple[kinfo_proc_map['egid']],
+            rawtuple[kinfo_proc_map['sgid']])
+
+    @wrap_exceptions
+    def terminal(self):
+        tty_nr = self._get_kinfo_proc()[kinfo_proc_map['ttynr']]
+        tmap = _psposix.get_terminal_map()
+        try:
+            return tmap[tty_nr]
+        except KeyError:
+            return None
+
+    @wrap_exceptions
+    def memory_info(self):
+        rawtuple = self._get_pidtaskinfo()
+        return pmem(
+            rawtuple[pidtaskinfo_map['rss']],
+            rawtuple[pidtaskinfo_map['vms']],
+            rawtuple[pidtaskinfo_map['pfaults']],
+            rawtuple[pidtaskinfo_map['pageins']],
+        )
+
+    @wrap_exceptions
+    def memory_full_info(self):
+        basic_mem = self.memory_info()
+        uss = cext.proc_memory_uss(self.pid)
+        return pfullmem(*basic_mem + (uss, ))
+
+    @wrap_exceptions
+    def cpu_times(self):
+        rawtuple = self._get_pidtaskinfo()
+        return _common.pcputimes(
+            rawtuple[pidtaskinfo_map['cpuutime']],
+            rawtuple[pidtaskinfo_map['cpustime']],
+            # children user / system times are not retrievable (set to 0)
+            0.0, 0.0)
+
+    @wrap_exceptions
+    def create_time(self):
+        return self._get_kinfo_proc()[kinfo_proc_map['ctime']]
+
+    @wrap_exceptions
+    def num_ctx_switches(self):
+        # Unvoluntary value seems not to be available;
+        # getrusage() numbers seems to confirm this theory.
+        # We set it to 0.
+        vol = self._get_pidtaskinfo()[pidtaskinfo_map['volctxsw']]
+        return _common.pctxsw(vol, 0)
+
+    @wrap_exceptions
+    def num_threads(self):
+        return self._get_pidtaskinfo()[pidtaskinfo_map['numthreads']]
+
+    @wrap_exceptions
+    def open_files(self):
+        if self.pid == 0:
+            return []
+        files = []
+        with catch_zombie(self):
+            rawlist = cext.proc_open_files(self.pid)
+        for path, fd in rawlist:
+            if isfile_strict(path):
+                ntuple = _common.popenfile(path, fd)
+                files.append(ntuple)
+        return files
+
+    @wrap_exceptions
+    def connections(self, kind='inet'):
+        if kind not in conn_tmap:
+            raise ValueError("invalid %r kind argument; choose between %s"
+                             % (kind, ', '.join([repr(x) for x in conn_tmap])))
+        families, types = conn_tmap[kind]
+        with catch_zombie(self):
+            rawlist = cext.proc_connections(self.pid, families, types)
+        ret = []
+        for item in rawlist:
+            fd, fam, type, laddr, raddr, status = item
+            status = TCP_STATUSES[status]
+            fam = sockfam_to_enum(fam)
+            type = socktype_to_enum(type)
+            if fam in (AF_INET, AF_INET6):
+                if laddr:
+                    laddr = _common.addr(*laddr)
+                if raddr:
+                    raddr = _common.addr(*raddr)
+            nt = _common.pconn(fd, fam, type, laddr, raddr, status)
+            ret.append(nt)
+        return ret
+
+    @wrap_exceptions
+    def num_fds(self):
+        if self.pid == 0:
+            return 0
+        with catch_zombie(self):
+            return cext.proc_num_fds(self.pid)
+
+    @wrap_exceptions
+    def wait(self, timeout=None):
+        return _psposix.wait_pid(self.pid, timeout, self._name)
+
+    @wrap_exceptions
+    def nice_get(self):
+        with catch_zombie(self):
+            return cext_posix.getpriority(self.pid)
+
+    @wrap_exceptions
+    def nice_set(self, value):
+        with catch_zombie(self):
+            return cext_posix.setpriority(self.pid, value)
+
+    @wrap_exceptions
+    def status(self):
+        code = self._get_kinfo_proc()[kinfo_proc_map['status']]
+        # XXX is '?' legit? (we're not supposed to return it anyway)
+        return PROC_STATUSES.get(code, '?')
+
+    @wrap_exceptions
+    def threads(self):
+        rawlist = cext.proc_threads(self.pid)
+        retlist = []
+        for thread_id, utime, stime in rawlist:
+            ntuple = _common.pthread(thread_id, utime, stime)
+            retlist.append(ntuple)
+        return retlist
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_psposix.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_psposix.py
new file mode 100644
index 00000000..d362143f
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_psposix.py
@@ -0,0 +1,186 @@
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Routines common to all posix systems."""
+
+import errno
+import glob
+import os
+import sys
+import time
+
+from ._common import memoize
+from ._common import sdiskusage
+from ._common import usage_percent
+from ._compat import PY3
+from ._compat import unicode
+
+
+__all__ = ['pid_exists', 'wait_pid', 'disk_usage', 'get_terminal_map']
+
+
+# This object gets set on "import psutil" from the __init__.py
+# file, see: https://github.com/giampaolo/psutil/issues/1402
+TimeoutExpired = None
+
+
+def pid_exists(pid):
+    """Check whether pid exists in the current process table."""
+    if pid == 0:
+        # According to "man 2 kill" PID 0 has a special meaning:
+        # it refers to <<every process in the process group of the
+        # calling process>> so we don't want to go any further.
+        # If we get here it means this UNIX platform *does* have
+        # a process with id 0.
+        return True
+    try:
+        os.kill(pid, 0)
+    except OSError as err:
+        if err.errno == errno.ESRCH:
+            # ESRCH == No such process
+            return False
+        elif err.errno == errno.EPERM:
+            # EPERM clearly means there's a process to deny access to
+            return True
+        else:
+            # According to "man 2 kill" possible error values are
+            # (EINVAL, EPERM, ESRCH) therefore we should never get
+            # here. If we do let's be explicit in considering this
+            # an error.
+            raise err
+    else:
+        return True
+
+
+def wait_pid(pid, timeout=None, proc_name=None):
+    """Wait for process with pid 'pid' to terminate and return its
+    exit status code as an integer.
+
+    If pid is not a children of os.getpid() (current process) just
+    waits until the process disappears and return None.
+
+    If pid does not exist at all return None immediately.
+
+    Raise TimeoutExpired on timeout expired.
+    """
+    def check_timeout(delay):
+        if timeout is not None:
+            if timer() >= stop_at:
+                raise TimeoutExpired(timeout, pid=pid, name=proc_name)
+        time.sleep(delay)
+        return min(delay * 2, 0.04)
+
+    timer = getattr(time, 'monotonic', time.time)
+    if timeout is not None:
+        def waitcall():
+            return os.waitpid(pid, os.WNOHANG)
+        stop_at = timer() + timeout
+    else:
+        def waitcall():
+            return os.waitpid(pid, 0)
+
+    delay = 0.0001
+    while True:
+        try:
+            retpid, status = waitcall()
+        except OSError as err:
+            if err.errno == errno.EINTR:
+                delay = check_timeout(delay)
+                continue
+            elif err.errno == errno.ECHILD:
+                # This has two meanings:
+                # - pid is not a child of os.getpid() in which case
+                #   we keep polling until it's gone
+                # - pid never existed in the first place
+                # In both cases we'll eventually return None as we
+                # can't determine its exit status code.
+                while True:
+                    if pid_exists(pid):
+                        delay = check_timeout(delay)
+                    else:
+                        return
+            else:
+                raise
+        else:
+            if retpid == 0:
+                # WNOHANG was used, pid is still running
+                delay = check_timeout(delay)
+                continue
+            # process exited due to a signal; return the integer of
+            # that signal
+            if os.WIFSIGNALED(status):
+                return -os.WTERMSIG(status)
+            # process exited using exit(2) system call; return the
+            # integer exit(2) system call has been called with
+            elif os.WIFEXITED(status):
+                return os.WEXITSTATUS(status)
+            else:
+                # should never happen
+                raise ValueError("unknown process exit status %r" % status)
+
+
+def disk_usage(path):
+    """Return disk usage associated with path.
+    Note: UNIX usually reserves 5% disk space which is not accessible
+    by user. In this function "total" and "used" values reflect the
+    total and used disk space whereas "free" and "percent" represent
+    the "free" and "used percent" user disk space.
+    """
+    if PY3:
+        st = os.statvfs(path)
+    else:
+        # os.statvfs() does not support unicode on Python 2:
+        # - https://github.com/giampaolo/psutil/issues/416
+        # - http://bugs.python.org/issue18695
+        try:
+            st = os.statvfs(path)
+        except UnicodeEncodeError:
+            if isinstance(path, unicode):
+                try:
+                    path = path.encode(sys.getfilesystemencoding())
+                except UnicodeEncodeError:
+                    pass
+                st = os.statvfs(path)
+            else:
+                raise
+
+    # Total space which is only available to root (unless changed
+    # at system level).
+    total = (st.f_blocks * st.f_frsize)
+    # Remaining free space usable by root.
+    avail_to_root = (st.f_bfree * st.f_frsize)
+    # Remaining free space usable by user.
+    avail_to_user = (st.f_bavail * st.f_frsize)
+    # Total space being used in general.
+    used = (total - avail_to_root)
+    # Total space which is available to user (same as 'total' but
+    # for the user).
+    total_user = used + avail_to_user
+    # User usage percent compared to the total amount of space
+    # the user can use. This number would be higher if compared
+    # to root's because the user has less space (usually -5%).
+    usage_percent_user = usage_percent(used, total_user, round_=1)
+
+    # NB: the percentage is -5% than what shown by df due to
+    # reserved blocks that we are currently not considering:
+    # https://github.com/giampaolo/psutil/issues/829#issuecomment-223750462
+    return sdiskusage(
+        total=total, used=used, free=avail_to_user, percent=usage_percent_user)
+
+
+@memoize
+def get_terminal_map():
+    """Get a map of device-id -> path as a dict.
+    Used by Process.terminal()
+    """
+    ret = {}
+    ls = glob.glob('/dev/tty*') + glob.glob('/dev/pts/*')
+    for name in ls:
+        assert name not in ret, name
+        try:
+            ret[os.stat(name).st_rdev] = name
+        except OSError as err:
+            if err.errno != errno.ENOENT:
+                raise
+    return ret
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_pssunos.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_pssunos.py
new file mode 100644
index 00000000..67166e46
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_pssunos.py
@@ -0,0 +1,731 @@
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Sun OS Solaris platform implementation."""
+
+import errno
+import os
+import socket
+import subprocess
+import sys
+from collections import namedtuple
+from socket import AF_INET
+
+from . import _common
+from . import _psposix
+from . import _psutil_posix as cext_posix
+from . import _psutil_sunos as cext
+from ._common import AF_INET6
+from ._common import isfile_strict
+from ._common import memoize_when_activated
+from ._common import sockfam_to_enum
+from ._common import socktype_to_enum
+from ._common import usage_percent
+from ._compat import b
+from ._compat import PY3
+
+
+__extra__all__ = ["CONN_IDLE", "CONN_BOUND", "PROCFS_PATH"]
+
+
+# =====================================================================
+# --- globals
+# =====================================================================
+
+
+PAGE_SIZE = os.sysconf('SC_PAGE_SIZE')
+AF_LINK = cext_posix.AF_LINK
+IS_64_BIT = sys.maxsize > 2**32
+
+CONN_IDLE = "IDLE"
+CONN_BOUND = "BOUND"
+
+PROC_STATUSES = {
+    cext.SSLEEP: _common.STATUS_SLEEPING,
+    cext.SRUN: _common.STATUS_RUNNING,
+    cext.SZOMB: _common.STATUS_ZOMBIE,
+    cext.SSTOP: _common.STATUS_STOPPED,
+    cext.SIDL: _common.STATUS_IDLE,
+    cext.SONPROC: _common.STATUS_RUNNING,  # same as run
+    cext.SWAIT: _common.STATUS_WAITING,
+}
+
+TCP_STATUSES = {
+    cext.TCPS_ESTABLISHED: _common.CONN_ESTABLISHED,
+    cext.TCPS_SYN_SENT: _common.CONN_SYN_SENT,
+    cext.TCPS_SYN_RCVD: _common.CONN_SYN_RECV,
+    cext.TCPS_FIN_WAIT_1: _common.CONN_FIN_WAIT1,
+    cext.TCPS_FIN_WAIT_2: _common.CONN_FIN_WAIT2,
+    cext.TCPS_TIME_WAIT: _common.CONN_TIME_WAIT,
+    cext.TCPS_CLOSED: _common.CONN_CLOSE,
+    cext.TCPS_CLOSE_WAIT: _common.CONN_CLOSE_WAIT,
+    cext.TCPS_LAST_ACK: _common.CONN_LAST_ACK,
+    cext.TCPS_LISTEN: _common.CONN_LISTEN,
+    cext.TCPS_CLOSING: _common.CONN_CLOSING,
+    cext.PSUTIL_CONN_NONE: _common.CONN_NONE,
+    cext.TCPS_IDLE: CONN_IDLE,  # sunos specific
+    cext.TCPS_BOUND: CONN_BOUND,  # sunos specific
+}
+
+proc_info_map = dict(
+    ppid=0,
+    rss=1,
+    vms=2,
+    create_time=3,
+    nice=4,
+    num_threads=5,
+    status=6,
+    ttynr=7,
+    uid=8,
+    euid=9,
+    gid=10,
+    egid=11)
+
+# These objects get set on "import psutil" from the __init__.py
+# file, see: https://github.com/giampaolo/psutil/issues/1402
+NoSuchProcess = None
+ZombieProcess = None
+AccessDenied = None
+TimeoutExpired = None
+
+
+# =====================================================================
+# --- named tuples
+# =====================================================================
+
+
+# psutil.cpu_times()
+scputimes = namedtuple('scputimes', ['user', 'system', 'idle', 'iowait'])
+# psutil.cpu_times(percpu=True)
+pcputimes = namedtuple('pcputimes',
+                       ['user', 'system', 'children_user', 'children_system'])
+# psutil.virtual_memory()
+svmem = namedtuple('svmem', ['total', 'available', 'percent', 'used', 'free'])
+# psutil.Process.memory_info()
+pmem = namedtuple('pmem', ['rss', 'vms'])
+pfullmem = pmem
+# psutil.Process.memory_maps(grouped=True)
+pmmap_grouped = namedtuple('pmmap_grouped',
+                           ['path', 'rss', 'anonymous', 'locked'])
+# psutil.Process.memory_maps(grouped=False)
+pmmap_ext = namedtuple(
+    'pmmap_ext', 'addr perms ' + ' '.join(pmmap_grouped._fields))
+
+
+# =====================================================================
+# --- utils
+# =====================================================================
+
+
+def get_procfs_path():
+    """Return updated psutil.PROCFS_PATH constant."""
+    return sys.modules['psutil'].PROCFS_PATH
+
+
+# =====================================================================
+# --- memory
+# =====================================================================
+
+
+def virtual_memory():
+    """Report virtual memory metrics."""
+    # we could have done this with kstat, but IMHO this is good enough
+    total = os.sysconf('SC_PHYS_PAGES') * PAGE_SIZE
+    # note: there's no difference on Solaris
+    free = avail = os.sysconf('SC_AVPHYS_PAGES') * PAGE_SIZE
+    used = total - free
+    percent = usage_percent(used, total, round_=1)
+    return svmem(total, avail, percent, used, free)
+
+
+def swap_memory():
+    """Report swap memory metrics."""
+    sin, sout = cext.swap_mem()
+    # XXX
+    # we are supposed to get total/free by doing so:
+    # http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/
+    #     usr/src/cmd/swap/swap.c
+    # ...nevertheless I can't manage to obtain the same numbers as 'swap'
+    # cmdline utility, so let's parse its output (sigh!)
+    p = subprocess.Popen(['/usr/bin/env', 'PATH=/usr/sbin:/sbin:%s' %
+                          os.environ['PATH'], 'swap', '-l'],
+                         stdout=subprocess.PIPE)
+    stdout, stderr = p.communicate()
+    if PY3:
+        stdout = stdout.decode(sys.stdout.encoding)
+    if p.returncode != 0:
+        raise RuntimeError("'swap -l' failed (retcode=%s)" % p.returncode)
+
+    lines = stdout.strip().split('\n')[1:]
+    if not lines:
+        raise RuntimeError('no swap device(s) configured')
+    total = free = 0
+    for line in lines:
+        line = line.split()
+        t, f = line[-2:]
+        total += int(int(t) * 512)
+        free += int(int(f) * 512)
+    used = total - free
+    percent = usage_percent(used, total, round_=1)
+    return _common.sswap(total, used, free, percent,
+                         sin * PAGE_SIZE, sout * PAGE_SIZE)
+
+
+# =====================================================================
+# --- CPU
+# =====================================================================
+
+
+def cpu_times():
+    """Return system-wide CPU times as a named tuple"""
+    ret = cext.per_cpu_times()
+    return scputimes(*[sum(x) for x in zip(*ret)])
+
+
+def per_cpu_times():
+    """Return system per-CPU times as a list of named tuples"""
+    ret = cext.per_cpu_times()
+    return [scputimes(*x) for x in ret]
+
+
+def cpu_count_logical():
+    """Return the number of logical CPUs in the system."""
+    try:
+        return os.sysconf("SC_NPROCESSORS_ONLN")
+    except ValueError:
+        # mimic os.cpu_count() behavior
+        return None
+
+
+def cpu_count_physical():
+    """Return the number of physical CPUs in the system."""
+    return cext.cpu_count_phys()
+
+
+def cpu_stats():
+    """Return various CPU stats as a named tuple."""
+    ctx_switches, interrupts, syscalls, traps = cext.cpu_stats()
+    soft_interrupts = 0
+    return _common.scpustats(ctx_switches, interrupts, soft_interrupts,
+                             syscalls)
+
+
+# =====================================================================
+# --- disks
+# =====================================================================
+
+
+disk_io_counters = cext.disk_io_counters
+disk_usage = _psposix.disk_usage
+
+
+def disk_partitions(all=False):
+    """Return system disk partitions."""
+    # TODO - the filtering logic should be better checked so that
+    # it tries to reflect 'df' as much as possible
+    retlist = []
+    partitions = cext.disk_partitions()
+    for partition in partitions:
+        device, mountpoint, fstype, opts = partition
+        if device == 'none':
+            device = ''
+        if not all:
+            # Differently from, say, Linux, we don't have a list of
+            # common fs types so the best we can do, AFAIK, is to
+            # filter by filesystem having a total size > 0.
+            if not disk_usage(mountpoint).total:
+                continue
+        ntuple = _common.sdiskpart(device, mountpoint, fstype, opts)
+        retlist.append(ntuple)
+    return retlist
+
+
+# =====================================================================
+# --- network
+# =====================================================================
+
+
+net_io_counters = cext.net_io_counters
+net_if_addrs = cext_posix.net_if_addrs
+
+
+def net_connections(kind, _pid=-1):
+    """Return socket connections.  If pid == -1 return system-wide
+    connections (as opposed to connections opened by one process only).
+    Only INET sockets are returned (UNIX are not).
+    """
+    cmap = _common.conn_tmap.copy()
+    if _pid == -1:
+        cmap.pop('unix', 0)
+    if kind not in cmap:
+        raise ValueError("invalid %r kind argument; choose between %s"
+                         % (kind, ', '.join([repr(x) for x in cmap])))
+    families, types = _common.conn_tmap[kind]
+    rawlist = cext.net_connections(_pid)
+    ret = set()
+    for item in rawlist:
+        fd, fam, type_, laddr, raddr, status, pid = item
+        if fam not in families:
+            continue
+        if type_ not in types:
+            continue
+        if fam in (AF_INET, AF_INET6):
+            if laddr:
+                laddr = _common.addr(*laddr)
+            if raddr:
+                raddr = _common.addr(*raddr)
+        status = TCP_STATUSES[status]
+        fam = sockfam_to_enum(fam)
+        type_ = socktype_to_enum(type_)
+        if _pid == -1:
+            nt = _common.sconn(fd, fam, type_, laddr, raddr, status, pid)
+        else:
+            nt = _common.pconn(fd, fam, type_, laddr, raddr, status)
+        ret.add(nt)
+    return list(ret)
+
+
+def net_if_stats():
+    """Get NIC stats (isup, duplex, speed, mtu)."""
+    ret = cext.net_if_stats()
+    for name, items in ret.items():
+        isup, duplex, speed, mtu = items
+        if hasattr(_common, 'NicDuplex'):
+            duplex = _common.NicDuplex(duplex)
+        ret[name] = _common.snicstats(isup, duplex, speed, mtu)
+    return ret
+
+
+# =====================================================================
+# --- other system functions
+# =====================================================================
+
+
+def boot_time():
+    """The system boot time expressed in seconds since the epoch."""
+    return cext.boot_time()
+
+
+def users():
+    """Return currently connected users as a list of namedtuples."""
+    retlist = []
+    rawlist = cext.users()
+    localhost = (':0.0', ':0')
+    for item in rawlist:
+        user, tty, hostname, tstamp, user_process, pid = item
+        # note: the underlying C function includes entries about
+        # system boot, run level and others.  We might want
+        # to use them in the future.
+        if not user_process:
+            continue
+        if hostname in localhost:
+            hostname = 'localhost'
+        nt = _common.suser(user, tty, hostname, tstamp, pid)
+        retlist.append(nt)
+    return retlist
+
+
+# =====================================================================
+# --- processes
+# =====================================================================
+
+
+def pids():
+    """Returns a list of PIDs currently running on the system."""
+    return [int(x) for x in os.listdir(b(get_procfs_path())) if x.isdigit()]
+
+
+def pid_exists(pid):
+    """Check for the existence of a unix pid."""
+    return _psposix.pid_exists(pid)
+
+
+def wrap_exceptions(fun):
+    """Call callable into a try/except clause and translate ENOENT,
+    EACCES and EPERM in NoSuchProcess or AccessDenied exceptions.
+    """
+
+    def wrapper(self, *args, **kwargs):
+        try:
+            return fun(self, *args, **kwargs)
+        except EnvironmentError as err:
+            if self.pid == 0:
+                if 0 in pids():
+                    raise AccessDenied(self.pid, self._name)
+                else:
+                    raise
+            # ENOENT (no such file or directory) gets raised on open().
+            # ESRCH (no such process) can get raised on read() if
+            # process is gone in meantime.
+            if err.errno in (errno.ENOENT, errno.ESRCH):
+                if not pid_exists(self.pid):
+                    raise NoSuchProcess(self.pid, self._name)
+                else:
+                    raise ZombieProcess(self.pid, self._name, self._ppid)
+            if err.errno in (errno.EPERM, errno.EACCES):
+                raise AccessDenied(self.pid, self._name)
+            raise
+    return wrapper
+
+
+class Process(object):
+    """Wrapper class around underlying C implementation."""
+
+    __slots__ = ["pid", "_name", "_ppid", "_procfs_path", "_cache"]
+
+    def __init__(self, pid):
+        self.pid = pid
+        self._name = None
+        self._ppid = None
+        self._procfs_path = get_procfs_path()
+
+    def _assert_alive(self):
+        """Raise NSP if the process disappeared on us."""
+        # For those C function who do not raise NSP, possibly returning
+        # incorrect or incomplete result.
+        os.stat('%s/%s' % (self._procfs_path, self.pid))
+
+    def oneshot_enter(self):
+        self._proc_name_and_args.cache_activate(self)
+        self._proc_basic_info.cache_activate(self)
+        self._proc_cred.cache_activate(self)
+
+    def oneshot_exit(self):
+        self._proc_name_and_args.cache_deactivate(self)
+        self._proc_basic_info.cache_deactivate(self)
+        self._proc_cred.cache_deactivate(self)
+
+    @wrap_exceptions
+    @memoize_when_activated
+    def _proc_name_and_args(self):
+        return cext.proc_name_and_args(self.pid, self._procfs_path)
+
+    @wrap_exceptions
+    @memoize_when_activated
+    def _proc_basic_info(self):
+        ret = cext.proc_basic_info(self.pid, self._procfs_path)
+        assert len(ret) == len(proc_info_map)
+        return ret
+
+    @wrap_exceptions
+    @memoize_when_activated
+    def _proc_cred(self):
+        return cext.proc_cred(self.pid, self._procfs_path)
+
+    @wrap_exceptions
+    def name(self):
+        # note: max len == 15
+        return self._proc_name_and_args()[0]
+
+    @wrap_exceptions
+    def exe(self):
+        try:
+            return os.readlink(
+                "%s/%s/path/a.out" % (self._procfs_path, self.pid))
+        except OSError:
+            pass    # continue and guess the exe name from the cmdline
+        # Will be guessed later from cmdline but we want to explicitly
+        # invoke cmdline here in order to get an AccessDenied
+        # exception if the user has not enough privileges.
+        self.cmdline()
+        return ""
+
+    @wrap_exceptions
+    def cmdline(self):
+        return self._proc_name_and_args()[1].split(' ')
+
+    @wrap_exceptions
+    def environ(self):
+        return cext.proc_environ(self.pid, self._procfs_path)
+
+    @wrap_exceptions
+    def create_time(self):
+        return self._proc_basic_info()[proc_info_map['create_time']]
+
+    @wrap_exceptions
+    def num_threads(self):
+        return self._proc_basic_info()[proc_info_map['num_threads']]
+
+    @wrap_exceptions
+    def nice_get(self):
+        # Note #1: getpriority(3) doesn't work for realtime processes.
+        # Psinfo is what ps uses, see:
+        # https://github.com/giampaolo/psutil/issues/1194
+        return self._proc_basic_info()[proc_info_map['nice']]
+
+    @wrap_exceptions
+    def nice_set(self, value):
+        if self.pid in (2, 3):
+            # Special case PIDs: internally setpriority(3) return ESRCH
+            # (no such process), no matter what.
+            # The process actually exists though, as it has a name,
+            # creation time, etc.
+            raise AccessDenied(self.pid, self._name)
+        return cext_posix.setpriority(self.pid, value)
+
+    @wrap_exceptions
+    def ppid(self):
+        self._ppid = self._proc_basic_info()[proc_info_map['ppid']]
+        return self._ppid
+
+    @wrap_exceptions
+    def uids(self):
+        try:
+            real, effective, saved, _, _, _ = self._proc_cred()
+        except AccessDenied:
+            real = self._proc_basic_info()[proc_info_map['uid']]
+            effective = self._proc_basic_info()[proc_info_map['euid']]
+            saved = None
+        return _common.puids(real, effective, saved)
+
+    @wrap_exceptions
+    def gids(self):
+        try:
+            _, _, _, real, effective, saved = self._proc_cred()
+        except AccessDenied:
+            real = self._proc_basic_info()[proc_info_map['gid']]
+            effective = self._proc_basic_info()[proc_info_map['egid']]
+            saved = None
+        return _common.puids(real, effective, saved)
+
+    @wrap_exceptions
+    def cpu_times(self):
+        try:
+            times = cext.proc_cpu_times(self.pid, self._procfs_path)
+        except OSError as err:
+            if err.errno == errno.EOVERFLOW and not IS_64_BIT:
+                # We may get here if we attempt to query a 64bit process
+                # with a 32bit python.
+                # Error originates from read() and also tools like "cat"
+                # fail in the same way (!).
+                # Since there simply is no way to determine CPU times we
+                # return 0.0 as a fallback. See:
+                # https://github.com/giampaolo/psutil/issues/857
+                times = (0.0, 0.0, 0.0, 0.0)
+            else:
+                raise
+        return _common.pcputimes(*times)
+
+    @wrap_exceptions
+    def cpu_num(self):
+        return cext.proc_cpu_num(self.pid, self._procfs_path)
+
+    @wrap_exceptions
+    def terminal(self):
+        procfs_path = self._procfs_path
+        hit_enoent = False
+        tty = wrap_exceptions(
+            self._proc_basic_info()[proc_info_map['ttynr']])
+        if tty != cext.PRNODEV:
+            for x in (0, 1, 2, 255):
+                try:
+                    return os.readlink(
+                        '%s/%d/path/%d' % (procfs_path, self.pid, x))
+                except OSError as err:
+                    if err.errno == errno.ENOENT:
+                        hit_enoent = True
+                        continue
+                    raise
+        if hit_enoent:
+            self._assert_alive()
+
+    @wrap_exceptions
+    def cwd(self):
+        # /proc/PID/path/cwd may not be resolved by readlink() even if
+        # it exists (ls shows it). If that's the case and the process
+        # is still alive return None (we can return None also on BSD).
+        # Reference: http://goo.gl/55XgO
+        procfs_path = self._procfs_path
+        try:
+            return os.readlink("%s/%s/path/cwd" % (procfs_path, self.pid))
+        except OSError as err:
+            if err.errno == errno.ENOENT:
+                os.stat("%s/%s" % (procfs_path, self.pid))  # raise NSP or AD
+                return None
+            raise
+
+    @wrap_exceptions
+    def memory_info(self):
+        ret = self._proc_basic_info()
+        rss = ret[proc_info_map['rss']] * 1024
+        vms = ret[proc_info_map['vms']] * 1024
+        return pmem(rss, vms)
+
+    memory_full_info = memory_info
+
+    @wrap_exceptions
+    def status(self):
+        code = self._proc_basic_info()[proc_info_map['status']]
+        # XXX is '?' legit? (we're not supposed to return it anyway)
+        return PROC_STATUSES.get(code, '?')
+
+    @wrap_exceptions
+    def threads(self):
+        procfs_path = self._procfs_path
+        ret = []
+        tids = os.listdir('%s/%d/lwp' % (procfs_path, self.pid))
+        hit_enoent = False
+        for tid in tids:
+            tid = int(tid)
+            try:
+                utime, stime = cext.query_process_thread(
+                    self.pid, tid, procfs_path)
+            except EnvironmentError as err:
+                if err.errno == errno.EOVERFLOW and not IS_64_BIT:
+                    # We may get here if we attempt to query a 64bit process
+                    # with a 32bit python.
+                    # Error originates from read() and also tools like "cat"
+                    # fail in the same way (!).
+                    # Since there simply is no way to determine CPU times we
+                    # return 0.0 as a fallback. See:
+                    # https://github.com/giampaolo/psutil/issues/857
+                    continue
+                # ENOENT == thread gone in meantime
+                if err.errno == errno.ENOENT:
+                    hit_enoent = True
+                    continue
+                raise
+            else:
+                nt = _common.pthread(tid, utime, stime)
+                ret.append(nt)
+        if hit_enoent:
+            self._assert_alive()
+        return ret
+
+    @wrap_exceptions
+    def open_files(self):
+        retlist = []
+        hit_enoent = False
+        procfs_path = self._procfs_path
+        pathdir = '%s/%d/path' % (procfs_path, self.pid)
+        for fd in os.listdir('%s/%d/fd' % (procfs_path, self.pid)):
+            path = os.path.join(pathdir, fd)
+            if os.path.islink(path):
+                try:
+                    file = os.readlink(path)
+                except OSError as err:
+                    # ENOENT == file which is gone in the meantime
+                    if err.errno == errno.ENOENT:
+                        hit_enoent = True
+                        continue
+                    raise
+                else:
+                    if isfile_strict(file):
+                        retlist.append(_common.popenfile(file, int(fd)))
+        if hit_enoent:
+            self._assert_alive()
+        return retlist
+
+    def _get_unix_sockets(self, pid):
+        """Get UNIX sockets used by process by parsing 'pfiles' output."""
+        # TODO: rewrite this in C (...but the damn netstat source code
+        # does not include this part! Argh!!)
+        cmd = "pfiles %s" % pid
+        p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE,
+                             stderr=subprocess.PIPE)
+        stdout, stderr = p.communicate()
+        if PY3:
+            stdout, stderr = [x.decode(sys.stdout.encoding)
+                              for x in (stdout, stderr)]
+        if p.returncode != 0:
+            if 'permission denied' in stderr.lower():
+                raise AccessDenied(self.pid, self._name)
+            if 'no such process' in stderr.lower():
+                raise NoSuchProcess(self.pid, self._name)
+            raise RuntimeError("%r command error\n%s" % (cmd, stderr))
+
+        lines = stdout.split('\n')[2:]
+        for i, line in enumerate(lines):
+            line = line.lstrip()
+            if line.startswith('sockname: AF_UNIX'):
+                path = line.split(' ', 2)[2]
+                type = lines[i - 2].strip()
+                if type == 'SOCK_STREAM':
+                    type = socket.SOCK_STREAM
+                elif type == 'SOCK_DGRAM':
+                    type = socket.SOCK_DGRAM
+                else:
+                    type = -1
+                yield (-1, socket.AF_UNIX, type, path, "", _common.CONN_NONE)
+
+    @wrap_exceptions
+    def connections(self, kind='inet'):
+        ret = net_connections(kind, _pid=self.pid)
+        # The underlying C implementation retrieves all OS connections
+        # and filters them by PID.  At this point we can't tell whether
+        # an empty list means there were no connections for process or
+        # process is no longer active so we force NSP in case the PID
+        # is no longer there.
+        if not ret:
+            # will raise NSP if process is gone
+            os.stat('%s/%s' % (self._procfs_path, self.pid))
+
+        # UNIX sockets
+        if kind in ('all', 'unix'):
+            ret.extend([_common.pconn(*conn) for conn in
+                        self._get_unix_sockets(self.pid)])
+        return ret
+
+    nt_mmap_grouped = namedtuple('mmap', 'path rss anon locked')
+    nt_mmap_ext = namedtuple('mmap', 'addr perms path rss anon locked')
+
+    @wrap_exceptions
+    def memory_maps(self):
+        def toaddr(start, end):
+            return '%s-%s' % (hex(start)[2:].strip('L'),
+                              hex(end)[2:].strip('L'))
+
+        procfs_path = self._procfs_path
+        retlist = []
+        try:
+            rawlist = cext.proc_memory_maps(self.pid, procfs_path)
+        except OSError as err:
+            if err.errno == errno.EOVERFLOW and not IS_64_BIT:
+                # We may get here if we attempt to query a 64bit process
+                # with a 32bit python.
+                # Error originates from read() and also tools like "cat"
+                # fail in the same way (!).
+                # Since there simply is no way to determine CPU times we
+                # return 0.0 as a fallback. See:
+                # https://github.com/giampaolo/psutil/issues/857
+                return []
+            else:
+                raise
+        hit_enoent = False
+        for item in rawlist:
+            addr, addrsize, perm, name, rss, anon, locked = item
+            addr = toaddr(addr, addrsize)
+            if not name.startswith('['):
+                try:
+                    name = os.readlink(
+                        '%s/%s/path/%s' % (procfs_path, self.pid, name))
+                except OSError as err:
+                    if err.errno == errno.ENOENT:
+                        # sometimes the link may not be resolved by
+                        # readlink() even if it exists (ls shows it).
+                        # If that's the case we just return the
+                        # unresolved link path.
+                        # This seems an incosistency with /proc similar
+                        # to: http://goo.gl/55XgO
+                        name = '%s/%s/path/%s' % (procfs_path, self.pid, name)
+                        hit_enoent = True
+                    else:
+                        raise
+            retlist.append((addr, perm, name, rss, anon, locked))
+        if hit_enoent:
+            self._assert_alive()
+        return retlist
+
+    @wrap_exceptions
+    def num_fds(self):
+        return len(os.listdir("%s/%s/fd" % (self._procfs_path, self.pid)))
+
+    @wrap_exceptions
+    def num_ctx_switches(self):
+        return _common.pctxsw(
+            *cext.proc_num_ctx_switches(self.pid, self._procfs_path))
+
+    @wrap_exceptions
+    def wait(self, timeout=None):
+        return _psposix.wait_pid(self.pid, timeout, self._name)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_psutil_windows.cp37-win32.pyd b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_psutil_windows.cp37-win32.pyd
new file mode 100644
index 00000000..46608d7a
Binary files /dev/null and b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_psutil_windows.cp37-win32.pyd differ
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_pswindows.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_pswindows.py
new file mode 100644
index 00000000..6687770c
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/_pswindows.py
@@ -0,0 +1,1066 @@
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Windows platform implementation."""
+
+import contextlib
+import errno
+import functools
+import os
+import sys
+import time
+from collections import namedtuple
+
+from . import _common
+try:
+    from . import _psutil_windows as cext
+except ImportError as err:
+    if str(err).lower().startswith("dll load failed") and \
+            sys.getwindowsversion()[0] < 6:
+        # We may get here if:
+        # 1) we are on an old Windows version
+        # 2) psutil was installed via pip + wheel
+        # See: https://github.com/giampaolo/psutil/issues/811
+        # It must be noted that psutil can still (kind of) work
+        # on outdated systems if compiled / installed from sources,
+        # but if we get here it means this this was a wheel (or exe).
+        msg = "this Windows version is too old (< Windows Vista); "
+        msg += "psutil 3.4.2 is the latest version which supports Windows "
+        msg += "2000, XP and 2003 server"
+        raise RuntimeError(msg)
+    else:
+        raise
+
+from ._common import conn_tmap
+from ._common import ENCODING
+from ._common import ENCODING_ERRS
+from ._common import isfile_strict
+from ._common import memoize
+from ._common import memoize_when_activated
+from ._common import parse_environ_block
+from ._common import sockfam_to_enum
+from ._common import socktype_to_enum
+from ._common import usage_percent
+from ._compat import long
+from ._compat import lru_cache
+from ._compat import PY3
+from ._compat import unicode
+from ._compat import xrange
+from ._psutil_windows import ABOVE_NORMAL_PRIORITY_CLASS
+from ._psutil_windows import BELOW_NORMAL_PRIORITY_CLASS
+from ._psutil_windows import HIGH_PRIORITY_CLASS
+from ._psutil_windows import IDLE_PRIORITY_CLASS
+from ._psutil_windows import NORMAL_PRIORITY_CLASS
+from ._psutil_windows import REALTIME_PRIORITY_CLASS
+
+if sys.version_info >= (3, 4):
+    import enum
+else:
+    enum = None
+
+# process priority constants, import from __init__.py:
+# http://msdn.microsoft.com/en-us/library/ms686219(v=vs.85).aspx
+__extra__all__ = [
+    "win_service_iter", "win_service_get",
+    "ABOVE_NORMAL_PRIORITY_CLASS", "BELOW_NORMAL_PRIORITY_CLASS",
+    "HIGH_PRIORITY_CLASS", "IDLE_PRIORITY_CLASS",
+    "NORMAL_PRIORITY_CLASS", "REALTIME_PRIORITY_CLASS",
+    "CONN_DELETE_TCB",
+    "AF_LINK",
+]
+
+
+# =====================================================================
+# --- globals
+# =====================================================================
+
+CONN_DELETE_TCB = "DELETE_TCB"
+ACCESS_DENIED_ERRSET = frozenset([errno.EPERM, errno.EACCES,
+                                  cext.ERROR_ACCESS_DENIED])
+NO_SUCH_SERVICE_ERRSET = frozenset([cext.ERROR_INVALID_NAME,
+                                    cext.ERROR_SERVICE_DOES_NOT_EXIST])
+HAS_PROC_IO_PRIORITY = hasattr(cext, "proc_io_priority_get")
+
+
+if enum is None:
+    AF_LINK = -1
+else:
+    AddressFamily = enum.IntEnum('AddressFamily', {'AF_LINK': -1})
+    AF_LINK = AddressFamily.AF_LINK
+
+TCP_STATUSES = {
+    cext.MIB_TCP_STATE_ESTAB: _common.CONN_ESTABLISHED,
+    cext.MIB_TCP_STATE_SYN_SENT: _common.CONN_SYN_SENT,
+    cext.MIB_TCP_STATE_SYN_RCVD: _common.CONN_SYN_RECV,
+    cext.MIB_TCP_STATE_FIN_WAIT1: _common.CONN_FIN_WAIT1,
+    cext.MIB_TCP_STATE_FIN_WAIT2: _common.CONN_FIN_WAIT2,
+    cext.MIB_TCP_STATE_TIME_WAIT: _common.CONN_TIME_WAIT,
+    cext.MIB_TCP_STATE_CLOSED: _common.CONN_CLOSE,
+    cext.MIB_TCP_STATE_CLOSE_WAIT: _common.CONN_CLOSE_WAIT,
+    cext.MIB_TCP_STATE_LAST_ACK: _common.CONN_LAST_ACK,
+    cext.MIB_TCP_STATE_LISTEN: _common.CONN_LISTEN,
+    cext.MIB_TCP_STATE_CLOSING: _common.CONN_CLOSING,
+    cext.MIB_TCP_STATE_DELETE_TCB: CONN_DELETE_TCB,
+    cext.PSUTIL_CONN_NONE: _common.CONN_NONE,
+}
+
+if enum is not None:
+    class Priority(enum.IntEnum):
+        ABOVE_NORMAL_PRIORITY_CLASS = ABOVE_NORMAL_PRIORITY_CLASS
+        BELOW_NORMAL_PRIORITY_CLASS = BELOW_NORMAL_PRIORITY_CLASS
+        HIGH_PRIORITY_CLASS = HIGH_PRIORITY_CLASS
+        IDLE_PRIORITY_CLASS = IDLE_PRIORITY_CLASS
+        NORMAL_PRIORITY_CLASS = NORMAL_PRIORITY_CLASS
+        REALTIME_PRIORITY_CLASS = REALTIME_PRIORITY_CLASS
+
+    globals().update(Priority.__members__)
+
+pinfo_map = dict(
+    num_handles=0,
+    ctx_switches=1,
+    user_time=2,
+    kernel_time=3,
+    create_time=4,
+    num_threads=5,
+    io_rcount=6,
+    io_wcount=7,
+    io_rbytes=8,
+    io_wbytes=9,
+    io_count_others=10,
+    io_bytes_others=11,
+    num_page_faults=12,
+    peak_wset=13,
+    wset=14,
+    peak_paged_pool=15,
+    paged_pool=16,
+    peak_non_paged_pool=17,
+    non_paged_pool=18,
+    pagefile=19,
+    peak_pagefile=20,
+    mem_private=21,
+)
+
+# These objects get set on "import psutil" from the __init__.py
+# file, see: https://github.com/giampaolo/psutil/issues/1402
+NoSuchProcess = None
+ZombieProcess = None
+AccessDenied = None
+TimeoutExpired = None
+
+# More values at: https://stackoverflow.com/a/20804735/376587
+WIN_10 = (10, 0)
+WIN_8 = (6, 2)
+WIN_7 = (6, 1)
+WIN_SERVER_2008 = (6, 0)
+WIN_VISTA = (6, 0)
+WIN_SERVER_2003 = (5, 2)
+WIN_XP = (5, 1)
+
+
+@lru_cache()
+def get_winver():
+    """Usage:
+    >>> if get_winver() <= WIN_VISTA:
+    ...      ...
+    """
+    wv = sys.getwindowsversion()
+    return (wv.major, wv.minor)
+
+
+IS_WIN_XP = get_winver() < WIN_VISTA
+
+
+# =====================================================================
+# --- named tuples
+# =====================================================================
+
+
+# psutil.cpu_times()
+scputimes = namedtuple('scputimes',
+                       ['user', 'system', 'idle', 'interrupt', 'dpc'])
+# psutil.virtual_memory()
+svmem = namedtuple('svmem', ['total', 'available', 'percent', 'used', 'free'])
+# psutil.Process.memory_info()
+pmem = namedtuple(
+    'pmem', ['rss', 'vms',
+             'num_page_faults', 'peak_wset', 'wset', 'peak_paged_pool',
+             'paged_pool', 'peak_nonpaged_pool', 'nonpaged_pool',
+             'pagefile', 'peak_pagefile', 'private'])
+# psutil.Process.memory_full_info()
+pfullmem = namedtuple('pfullmem', pmem._fields + ('uss', ))
+# psutil.Process.memory_maps(grouped=True)
+pmmap_grouped = namedtuple('pmmap_grouped', ['path', 'rss'])
+# psutil.Process.memory_maps(grouped=False)
+pmmap_ext = namedtuple(
+    'pmmap_ext', 'addr perms ' + ' '.join(pmmap_grouped._fields))
+# psutil.Process.io_counters()
+pio = namedtuple('pio', ['read_count', 'write_count',
+                         'read_bytes', 'write_bytes',
+                         'other_count', 'other_bytes'])
+
+
+# =====================================================================
+# --- utils
+# =====================================================================
+
+
+@lru_cache(maxsize=512)
+def convert_dos_path(s):
+    r"""Convert paths using native DOS format like:
+        "\Device\HarddiskVolume1\Windows\systemew\file.txt"
+    into:
+        "C:\Windows\systemew\file.txt"
+    """
+    rawdrive = '\\'.join(s.split('\\')[:3])
+    driveletter = cext.win32_QueryDosDevice(rawdrive)
+    return os.path.join(driveletter, s[len(rawdrive):])
+
+
+def py2_strencode(s):
+    """Encode a unicode string to a byte string by using the default fs
+    encoding + "replace" error handler.
+    """
+    if PY3:
+        return s
+    else:
+        if isinstance(s, str):
+            return s
+        else:
+            return s.encode(ENCODING, ENCODING_ERRS)
+
+
+@memoize
+def getpagesize():
+    return cext.getpagesize()
+
+
+# =====================================================================
+# --- memory
+# =====================================================================
+
+
+def virtual_memory():
+    """System virtual memory as a namedtuple."""
+    mem = cext.virtual_mem()
+    totphys, availphys, totpagef, availpagef, totvirt, freevirt = mem
+    #
+    total = totphys
+    avail = availphys
+    free = availphys
+    used = total - avail
+    percent = usage_percent((total - avail), total, round_=1)
+    return svmem(total, avail, percent, used, free)
+
+
+def swap_memory():
+    """Swap system memory as a (total, used, free, sin, sout) tuple."""
+    mem = cext.virtual_mem()
+    total = mem[2]
+    free = mem[3]
+    used = total - free
+    percent = usage_percent(used, total, round_=1)
+    return _common.sswap(total, used, free, percent, 0, 0)
+
+
+# =====================================================================
+# --- disk
+# =====================================================================
+
+
+disk_io_counters = cext.disk_io_counters
+
+
+def disk_usage(path):
+    """Return disk usage associated with path."""
+    if PY3 and isinstance(path, bytes):
+        # XXX: do we want to use "strict"? Probably yes, in order
+        # to fail immediately. After all we are accepting input here...
+        path = path.decode(ENCODING, errors="strict")
+    total, free = cext.disk_usage(path)
+    used = total - free
+    percent = usage_percent(used, total, round_=1)
+    return _common.sdiskusage(total, used, free, percent)
+
+
+def disk_partitions(all):
+    """Return disk partitions."""
+    rawlist = cext.disk_partitions(all)
+    return [_common.sdiskpart(*x) for x in rawlist]
+
+
+# =====================================================================
+# --- CPU
+# =====================================================================
+
+
+def cpu_times():
+    """Return system CPU times as a named tuple."""
+    user, system, idle = cext.cpu_times()
+    # Internally, GetSystemTimes() is used, and it doesn't return
+    # interrupt and dpc times. cext.per_cpu_times() does, so we
+    # rely on it to get those only.
+    percpu_summed = scputimes(*[sum(n) for n in zip(*cext.per_cpu_times())])
+    return scputimes(user, system, idle,
+                     percpu_summed.interrupt, percpu_summed.dpc)
+
+
+def per_cpu_times():
+    """Return system per-CPU times as a list of named tuples."""
+    ret = []
+    for user, system, idle, interrupt, dpc in cext.per_cpu_times():
+        item = scputimes(user, system, idle, interrupt, dpc)
+        ret.append(item)
+    return ret
+
+
+def cpu_count_logical():
+    """Return the number of logical CPUs in the system."""
+    return cext.cpu_count_logical()
+
+
+def cpu_count_physical():
+    """Return the number of physical CPU cores in the system."""
+    return cext.cpu_count_phys()
+
+
+def cpu_stats():
+    """Return CPU statistics."""
+    ctx_switches, interrupts, dpcs, syscalls = cext.cpu_stats()
+    soft_interrupts = 0
+    return _common.scpustats(ctx_switches, interrupts, soft_interrupts,
+                             syscalls)
+
+
+def cpu_freq():
+    """Return CPU frequency.
+    On Windows per-cpu frequency is not supported.
+    """
+    curr, max_ = cext.cpu_freq()
+    min_ = 0.0
+    return [_common.scpufreq(float(curr), min_, float(max_))]
+
+
+# =====================================================================
+# --- network
+# =====================================================================
+
+
+def net_connections(kind, _pid=-1):
+    """Return socket connections.  If pid == -1 return system-wide
+    connections (as opposed to connections opened by one process only).
+    """
+    if kind not in conn_tmap:
+        raise ValueError("invalid %r kind argument; choose between %s"
+                         % (kind, ', '.join([repr(x) for x in conn_tmap])))
+    families, types = conn_tmap[kind]
+    rawlist = cext.net_connections(_pid, families, types)
+    ret = set()
+    for item in rawlist:
+        fd, fam, type, laddr, raddr, status, pid = item
+        if laddr:
+            laddr = _common.addr(*laddr)
+        if raddr:
+            raddr = _common.addr(*raddr)
+        status = TCP_STATUSES[status]
+        fam = sockfam_to_enum(fam)
+        type = socktype_to_enum(type)
+        if _pid == -1:
+            nt = _common.sconn(fd, fam, type, laddr, raddr, status, pid)
+        else:
+            nt = _common.pconn(fd, fam, type, laddr, raddr, status)
+        ret.add(nt)
+    return list(ret)
+
+
+def net_if_stats():
+    """Get NIC stats (isup, duplex, speed, mtu)."""
+    ret = {}
+    rawdict = cext.net_if_stats()
+    for name, items in rawdict.items():
+        if not PY3:
+            assert isinstance(name, unicode), type(name)
+            name = py2_strencode(name)
+        isup, duplex, speed, mtu = items
+        if hasattr(_common, 'NicDuplex'):
+            duplex = _common.NicDuplex(duplex)
+        ret[name] = _common.snicstats(isup, duplex, speed, mtu)
+    return ret
+
+
+def net_io_counters():
+    """Return network I/O statistics for every network interface
+    installed on the system as a dict of raw tuples.
+    """
+    ret = cext.net_io_counters()
+    return dict([(py2_strencode(k), v) for k, v in ret.items()])
+
+
+def net_if_addrs():
+    """Return the addresses associated to each NIC."""
+    ret = []
+    for items in cext.net_if_addrs():
+        items = list(items)
+        items[0] = py2_strencode(items[0])
+        ret.append(items)
+    return ret
+
+
+# =====================================================================
+# --- sensors
+# =====================================================================
+
+
+def sensors_battery():
+    """Return battery information."""
+    # For constants meaning see:
+    # https://msdn.microsoft.com/en-us/library/windows/desktop/
+    #     aa373232(v=vs.85).aspx
+    acline_status, flags, percent, secsleft = cext.sensors_battery()
+    power_plugged = acline_status == 1
+    no_battery = bool(flags & 128)
+    charging = bool(flags & 8)
+
+    if no_battery:
+        return None
+    if power_plugged or charging:
+        secsleft = _common.POWER_TIME_UNLIMITED
+    elif secsleft == -1:
+        secsleft = _common.POWER_TIME_UNKNOWN
+
+    return _common.sbattery(percent, secsleft, power_plugged)
+
+
+# =====================================================================
+# --- other system functions
+# =====================================================================
+
+
+_last_btime = 0
+
+
+def boot_time():
+    """The system boot time expressed in seconds since the epoch."""
+    # This dirty hack is to adjust the precision of the returned
+    # value which may have a 1 second fluctuation, see:
+    # https://github.com/giampaolo/psutil/issues/1007
+    global _last_btime
+    ret = float(cext.boot_time())
+    if abs(ret - _last_btime) <= 1:
+        return _last_btime
+    else:
+        _last_btime = ret
+        return ret
+
+
+def users():
+    """Return currently connected users as a list of namedtuples."""
+    retlist = []
+    rawlist = cext.users()
+    for item in rawlist:
+        user, hostname, tstamp = item
+        user = py2_strencode(user)
+        nt = _common.suser(user, None, hostname, tstamp, None)
+        retlist.append(nt)
+    return retlist
+
+
+# =====================================================================
+# --- Windows services
+# =====================================================================
+
+
+def win_service_iter():
+    """Yields a list of WindowsService instances."""
+    for name, display_name in cext.winservice_enumerate():
+        yield WindowsService(py2_strencode(name), py2_strencode(display_name))
+
+
+def win_service_get(name):
+    """Open a Windows service and return it as a WindowsService instance."""
+    service = WindowsService(name, None)
+    service._display_name = service._query_config()['display_name']
+    return service
+
+
+class WindowsService(object):
+    """Represents an installed Windows service."""
+
+    def __init__(self, name, display_name):
+        self._name = name
+        self._display_name = display_name
+
+    def __str__(self):
+        details = "(name=%r, display_name=%r)" % (
+            self._name, self._display_name)
+        return "%s%s" % (self.__class__.__name__, details)
+
+    def __repr__(self):
+        return "<%s at %s>" % (self.__str__(), id(self))
+
+    def __eq__(self, other):
+        # Test for equality with another WindosService object based
+        # on name.
+        if not isinstance(other, WindowsService):
+            return NotImplemented
+        return self._name == other._name
+
+    def __ne__(self, other):
+        return not self == other
+
+    def _query_config(self):
+        with self._wrap_exceptions():
+            display_name, binpath, username, start_type = \
+                cext.winservice_query_config(self._name)
+        # XXX - update _self.display_name?
+        return dict(
+            display_name=py2_strencode(display_name),
+            binpath=py2_strencode(binpath),
+            username=py2_strencode(username),
+            start_type=py2_strencode(start_type))
+
+    def _query_status(self):
+        with self._wrap_exceptions():
+            status, pid = cext.winservice_query_status(self._name)
+        if pid == 0:
+            pid = None
+        return dict(status=status, pid=pid)
+
+    @contextlib.contextmanager
+    def _wrap_exceptions(self):
+        """Ctx manager which translates bare OSError and WindowsError
+        exceptions into NoSuchProcess and AccessDenied.
+        """
+        try:
+            yield
+        except WindowsError as err:
+            if err.errno in ACCESS_DENIED_ERRSET:
+                raise AccessDenied(
+                    pid=None, name=self._name,
+                    msg="service %r is not querable (not enough privileges)" %
+                        self._name)
+            elif err.errno in NO_SUCH_SERVICE_ERRSET or \
+                    err.winerror in NO_SUCH_SERVICE_ERRSET:
+                raise NoSuchProcess(
+                    pid=None, name=self._name,
+                    msg="service %r does not exist)" % self._name)
+            else:
+                raise
+
+    # config query
+
+    def name(self):
+        """The service name. This string is how a service is referenced
+        and can be passed to win_service_get() to get a new
+        WindowsService instance.
+        """
+        return self._name
+
+    def display_name(self):
+        """The service display name. The value is cached when this class
+        is instantiated.
+        """
+        return self._display_name
+
+    def binpath(self):
+        """The fully qualified path to the service binary/exe file as
+        a string, including command line arguments.
+        """
+        return self._query_config()['binpath']
+
+    def username(self):
+        """The name of the user that owns this service."""
+        return self._query_config()['username']
+
+    def start_type(self):
+        """A string which can either be "automatic", "manual" or
+        "disabled".
+        """
+        return self._query_config()['start_type']
+
+    # status query
+
+    def pid(self):
+        """The process PID, if any, else None. This can be passed
+        to Process class to control the service's process.
+        """
+        return self._query_status()['pid']
+
+    def status(self):
+        """Service status as a string."""
+        return self._query_status()['status']
+
+    def description(self):
+        """Service long description."""
+        return py2_strencode(cext.winservice_query_descr(self.name()))
+
+    # utils
+
+    def as_dict(self):
+        """Utility method retrieving all the information above as a
+        dictionary.
+        """
+        d = self._query_config()
+        d.update(self._query_status())
+        d['name'] = self.name()
+        d['display_name'] = self.display_name()
+        d['description'] = self.description()
+        return d
+
+    # actions
+    # XXX: the necessary C bindings for start() and stop() are
+    # implemented but for now I prefer not to expose them.
+    # I may change my mind in the future. Reasons:
+    # - they require Administrator privileges
+    # - can't implement a timeout for stop() (unless by using a thread,
+    #   which sucks)
+    # - would require adding ServiceAlreadyStarted and
+    #   ServiceAlreadyStopped exceptions, adding two new APIs.
+    # - we might also want to have modify(), which would basically mean
+    #   rewriting win32serviceutil.ChangeServiceConfig, which involves a
+    #   lot of stuff (and API constants which would pollute the API), see:
+    #   http://pyxr.sourceforge.net/PyXR/c/python24/lib/site-packages/
+    #       win32/lib/win32serviceutil.py.html#0175
+    # - psutil is typically about "read only" monitoring stuff;
+    #   win_service_* APIs should only be used to retrieve a service and
+    #   check whether it's running
+
+    # def start(self, timeout=None):
+    #     with self._wrap_exceptions():
+    #         cext.winservice_start(self.name())
+    #         if timeout:
+    #             giveup_at = time.time() + timeout
+    #             while True:
+    #                 if self.status() == "running":
+    #                     return
+    #                 else:
+    #                     if time.time() > giveup_at:
+    #                         raise TimeoutExpired(timeout)
+    #                     else:
+    #                         time.sleep(.1)
+
+    # def stop(self):
+    #     # Note: timeout is not implemented because it's just not
+    #     # possible, see:
+    #     # http://stackoverflow.com/questions/11973228/
+    #     with self._wrap_exceptions():
+    #         return cext.winservice_stop(self.name())
+
+
+# =====================================================================
+# --- processes
+# =====================================================================
+
+
+pids = cext.pids
+pid_exists = cext.pid_exists
+ppid_map = cext.ppid_map  # used internally by Process.children()
+
+
+def wrap_exceptions(fun):
+    """Decorator which translates bare OSError and WindowsError
+    exceptions into NoSuchProcess and AccessDenied.
+    """
+    @functools.wraps(fun)
+    def wrapper(self, *args, **kwargs):
+        try:
+            return fun(self, *args, **kwargs)
+        except OSError as err:
+            if err.errno in ACCESS_DENIED_ERRSET:
+                raise AccessDenied(self.pid, self._name)
+            if err.errno == errno.ESRCH:
+                raise NoSuchProcess(self.pid, self._name)
+            raise
+    return wrapper
+
+
+class Process(object):
+    """Wrapper class around underlying C implementation."""
+
+    __slots__ = ["pid", "_name", "_ppid", "_cache"]
+
+    def __init__(self, pid):
+        self.pid = pid
+        self._name = None
+        self._ppid = None
+
+    # --- oneshot() stuff
+
+    def oneshot_enter(self):
+        self.oneshot_info.cache_activate(self)
+
+    def oneshot_exit(self):
+        self.oneshot_info.cache_deactivate(self)
+
+    @wrap_exceptions
+    @memoize_when_activated
+    def oneshot_info(self):
+        """Return multiple information about this process as a
+        raw tuple.
+        """
+        ret = cext.proc_info(self.pid)
+        assert len(ret) == len(pinfo_map)
+        return ret
+
+    @wrap_exceptions
+    def name(self):
+        """Return process name, which on Windows is always the final
+        part of the executable.
+        """
+        # This is how PIDs 0 and 4 are always represented in taskmgr
+        # and process-hacker.
+        if self.pid == 0:
+            return "System Idle Process"
+        elif self.pid == 4:
+            return "System"
+        else:
+            try:
+                # Note: this will fail with AD for most PIDs owned
+                # by another user but it's faster.
+                return py2_strencode(os.path.basename(self.exe()))
+            except AccessDenied:
+                return py2_strencode(cext.proc_name(self.pid))
+
+    @wrap_exceptions
+    def exe(self):
+        # Dual implementation, see:
+        # https://github.com/giampaolo/psutil/pull/1413
+        if not IS_WIN_XP:
+            exe = cext.proc_exe(self.pid)
+        else:
+            if self.pid in (0, 4):
+                # https://github.com/giampaolo/psutil/issues/414
+                # https://github.com/giampaolo/psutil/issues/528
+                raise AccessDenied(self.pid, self._name)
+            exe = cext.proc_exe(self.pid)
+            exe = convert_dos_path(exe)
+        return py2_strencode(exe)
+
+    @wrap_exceptions
+    def cmdline(self):
+        if cext.WINVER >= cext.WINDOWS_8_1:
+            # PEB method detects cmdline changes but requires more
+            # privileges: https://github.com/giampaolo/psutil/pull/1398
+            try:
+                ret = cext.proc_cmdline(self.pid, use_peb=True)
+            except OSError as err:
+                if err.errno in ACCESS_DENIED_ERRSET:
+                    ret = cext.proc_cmdline(self.pid, use_peb=False)
+                else:
+                    raise
+        else:
+            ret = cext.proc_cmdline(self.pid, use_peb=True)
+        if PY3:
+            return ret
+        else:
+            return [py2_strencode(s) for s in ret]
+
+    @wrap_exceptions
+    def environ(self):
+        ustr = cext.proc_environ(self.pid)
+        if ustr and not PY3:
+            assert isinstance(ustr, unicode), type(ustr)
+        return parse_environ_block(py2_strencode(ustr))
+
+    def ppid(self):
+        try:
+            return ppid_map()[self.pid]
+        except KeyError:
+            raise NoSuchProcess(self.pid, self._name)
+
+    def _get_raw_meminfo(self):
+        try:
+            return cext.proc_memory_info(self.pid)
+        except OSError as err:
+            if err.errno in ACCESS_DENIED_ERRSET:
+                # TODO: the C ext can probably be refactored in order
+                # to get this from cext.proc_info()
+                info = self.oneshot_info()
+                return (
+                    info[pinfo_map['num_page_faults']],
+                    info[pinfo_map['peak_wset']],
+                    info[pinfo_map['wset']],
+                    info[pinfo_map['peak_paged_pool']],
+                    info[pinfo_map['paged_pool']],
+                    info[pinfo_map['peak_non_paged_pool']],
+                    info[pinfo_map['non_paged_pool']],
+                    info[pinfo_map['pagefile']],
+                    info[pinfo_map['peak_pagefile']],
+                    info[pinfo_map['mem_private']],
+                )
+            raise
+
+    @wrap_exceptions
+    def memory_info(self):
+        # on Windows RSS == WorkingSetSize and VSM == PagefileUsage.
+        # Underlying C function returns fields of PROCESS_MEMORY_COUNTERS
+        # struct.
+        t = self._get_raw_meminfo()
+        rss = t[2]  # wset
+        vms = t[7]  # pagefile
+        return pmem(*(rss, vms, ) + t)
+
+    @wrap_exceptions
+    def memory_full_info(self):
+        basic_mem = self.memory_info()
+        uss = cext.proc_memory_uss(self.pid)
+        uss *= getpagesize()
+        return pfullmem(*basic_mem + (uss, ))
+
+    def memory_maps(self):
+        try:
+            raw = cext.proc_memory_maps(self.pid)
+        except OSError as err:
+            # XXX - can't use wrap_exceptions decorator as we're
+            # returning a generator; probably needs refactoring.
+            if err.errno in ACCESS_DENIED_ERRSET:
+                raise AccessDenied(self.pid, self._name)
+            if err.errno == errno.ESRCH:
+                raise NoSuchProcess(self.pid, self._name)
+            raise
+        else:
+            for addr, perm, path, rss in raw:
+                path = convert_dos_path(path)
+                if not PY3:
+                    assert isinstance(path, unicode), type(path)
+                    path = py2_strencode(path)
+                addr = hex(addr)
+                yield (addr, perm, path, rss)
+
+    @wrap_exceptions
+    def kill(self):
+        return cext.proc_kill(self.pid)
+
+    @wrap_exceptions
+    def send_signal(self, sig):
+        os.kill(self.pid, sig)
+
+    @wrap_exceptions
+    def wait(self, timeout=None):
+        if timeout is None:
+            cext_timeout = cext.INFINITE
+        else:
+            # WaitForSingleObject() expects time in milliseconds.
+            cext_timeout = int(timeout * 1000)
+
+        timer = getattr(time, 'monotonic', time.time)
+        stop_at = timer() + timeout if timeout is not None else None
+
+        try:
+            # Exit code is supposed to come from GetExitCodeProcess().
+            # May also be None if OpenProcess() failed with
+            # ERROR_INVALID_PARAMETER, meaning PID is already gone.
+            exit_code = cext.proc_wait(self.pid, cext_timeout)
+        except cext.TimeoutExpired:
+            # WaitForSingleObject() returned WAIT_TIMEOUT. Just raise.
+            raise TimeoutExpired(timeout, self.pid, self._name)
+        except cext.TimeoutAbandoned:
+            # WaitForSingleObject() returned WAIT_ABANDONED, see:
+            # https://github.com/giampaolo/psutil/issues/1224
+            # We'll just rely on the internal polling and return None
+            # when the PID disappears. Subprocess module does the same
+            # (return None):
+            # https://github.com/python/cpython/blob/
+            #     be50a7b627d0aa37e08fa8e2d5568891f19903ce/
+            #     Lib/subprocess.py#L1193-L1194
+            exit_code = None
+
+        # At this point WaitForSingleObject() returned WAIT_OBJECT_0,
+        # meaning the process is gone. Stupidly there are cases where
+        # its PID may still stick around so we do a further internal
+        # polling.
+        delay = 0.0001
+        while True:
+            if not pid_exists(self.pid):
+                return exit_code
+            if stop_at and timer() >= stop_at:
+                raise TimeoutExpired(timeout, pid=self.pid, name=self._name)
+            time.sleep(delay)
+            delay = min(delay * 2, 0.04)  # incremental delay
+
+    @wrap_exceptions
+    def username(self):
+        if self.pid in (0, 4):
+            return 'NT AUTHORITY\\SYSTEM'
+        domain, user = cext.proc_username(self.pid)
+        return py2_strencode(domain) + '\\' + py2_strencode(user)
+
+    @wrap_exceptions
+    def create_time(self):
+        # special case for kernel process PIDs; return system boot time
+        if self.pid in (0, 4):
+            return boot_time()
+        try:
+            return cext.proc_create_time(self.pid)
+        except OSError as err:
+            if err.errno in ACCESS_DENIED_ERRSET:
+                return self.oneshot_info()[pinfo_map['create_time']]
+            raise
+
+    @wrap_exceptions
+    def num_threads(self):
+        return self.oneshot_info()[pinfo_map['num_threads']]
+
+    @wrap_exceptions
+    def threads(self):
+        rawlist = cext.proc_threads(self.pid)
+        retlist = []
+        for thread_id, utime, stime in rawlist:
+            ntuple = _common.pthread(thread_id, utime, stime)
+            retlist.append(ntuple)
+        return retlist
+
+    @wrap_exceptions
+    def cpu_times(self):
+        try:
+            user, system = cext.proc_cpu_times(self.pid)
+        except OSError as err:
+            if err.errno in ACCESS_DENIED_ERRSET:
+                info = self.oneshot_info()
+                user = info[pinfo_map['user_time']]
+                system = info[pinfo_map['kernel_time']]
+            else:
+                raise
+        # Children user/system times are not retrievable (set to 0).
+        return _common.pcputimes(user, system, 0.0, 0.0)
+
+    @wrap_exceptions
+    def suspend(self):
+        cext.proc_suspend_or_resume(self.pid, True)
+
+    @wrap_exceptions
+    def resume(self):
+        cext.proc_suspend_or_resume(self.pid, False)
+
+    @wrap_exceptions
+    def cwd(self):
+        if self.pid in (0, 4):
+            raise AccessDenied(self.pid, self._name)
+        # return a normalized pathname since the native C function appends
+        # "\\" at the and of the path
+        path = cext.proc_cwd(self.pid)
+        return py2_strencode(os.path.normpath(path))
+
+    @wrap_exceptions
+    def open_files(self):
+        if self.pid in (0, 4):
+            return []
+        ret = set()
+        # Filenames come in in native format like:
+        # "\Device\HarddiskVolume1\Windows\systemew\file.txt"
+        # Convert the first part in the corresponding drive letter
+        # (e.g. "C:\") by using Windows's QueryDosDevice()
+        raw_file_names = cext.proc_open_files(self.pid)
+        for _file in raw_file_names:
+            _file = convert_dos_path(_file)
+            if isfile_strict(_file):
+                if not PY3:
+                    _file = py2_strencode(_file)
+                ntuple = _common.popenfile(_file, -1)
+                ret.add(ntuple)
+        return list(ret)
+
+    @wrap_exceptions
+    def connections(self, kind='inet'):
+        return net_connections(kind, _pid=self.pid)
+
+    @wrap_exceptions
+    def nice_get(self):
+        value = cext.proc_priority_get(self.pid)
+        if enum is not None:
+            value = Priority(value)
+        return value
+
+    @wrap_exceptions
+    def nice_set(self, value):
+        return cext.proc_priority_set(self.pid, value)
+
+    # available on Windows >= Vista
+    if HAS_PROC_IO_PRIORITY:
+        @wrap_exceptions
+        def ionice_get(self):
+            return cext.proc_io_priority_get(self.pid)
+
+        @wrap_exceptions
+        def ionice_set(self, value, _):
+            if _:
+                raise TypeError("set_proc_ionice() on Windows takes only "
+                                "1 argument (2 given)")
+            if value not in (2, 1, 0):
+                raise ValueError("value must be 2 (normal), 1 (low) or 0 "
+                                 "(very low); got %r" % value)
+            return cext.proc_io_priority_set(self.pid, value)
+
+    @wrap_exceptions
+    def io_counters(self):
+        try:
+            ret = cext.proc_io_counters(self.pid)
+        except OSError as err:
+            if err.errno in ACCESS_DENIED_ERRSET:
+                info = self.oneshot_info()
+                ret = (
+                    info[pinfo_map['io_rcount']],
+                    info[pinfo_map['io_wcount']],
+                    info[pinfo_map['io_rbytes']],
+                    info[pinfo_map['io_wbytes']],
+                    info[pinfo_map['io_count_others']],
+                    info[pinfo_map['io_bytes_others']],
+                )
+            else:
+                raise
+        return pio(*ret)
+
+    @wrap_exceptions
+    def status(self):
+        suspended = cext.proc_is_suspended(self.pid)
+        if suspended:
+            return _common.STATUS_STOPPED
+        else:
+            return _common.STATUS_RUNNING
+
+    @wrap_exceptions
+    def cpu_affinity_get(self):
+        def from_bitmask(x):
+            return [i for i in xrange(64) if (1 << i) & x]
+        bitmask = cext.proc_cpu_affinity_get(self.pid)
+        return from_bitmask(bitmask)
+
+    @wrap_exceptions
+    def cpu_affinity_set(self, value):
+        def to_bitmask(l):
+            if not l:
+                raise ValueError("invalid argument %r" % l)
+            out = 0
+            for b in l:
+                out |= 2 ** b
+            return out
+
+        # SetProcessAffinityMask() states that ERROR_INVALID_PARAMETER
+        # is returned for an invalid CPU but this seems not to be true,
+        # therefore we check CPUs validy beforehand.
+        allcpus = list(range(len(per_cpu_times())))
+        for cpu in value:
+            if cpu not in allcpus:
+                if not isinstance(cpu, (int, long)):
+                    raise TypeError(
+                        "invalid CPU %r; an integer is required" % cpu)
+                else:
+                    raise ValueError("invalid CPU %r" % cpu)
+
+        bitmask = to_bitmask(value)
+        cext.proc_cpu_affinity_set(self.pid, bitmask)
+
+    @wrap_exceptions
+    def num_handles(self):
+        try:
+            return cext.proc_num_handles(self.pid)
+        except OSError as err:
+            if err.errno in ACCESS_DENIED_ERRSET:
+                return self.oneshot_info()[pinfo_map['num_handles']]
+            raise
+
+    @wrap_exceptions
+    def num_ctx_switches(self):
+        ctx_switches = self.oneshot_info()[pinfo_map['ctx_switches']]
+        # only voluntary ctx switches are supported
+        return _common.pctxsw(ctx_switches, 0)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/__init__.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/__init__.py
new file mode 100644
index 00000000..74b0c969
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/__init__.py
@@ -0,0 +1,1244 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""
+Test utilities.
+"""
+
+from __future__ import print_function
+
+import atexit
+import contextlib
+import ctypes
+import errno
+import functools
+import os
+import random
+import re
+import select
+import shutil
+import socket
+import stat
+import subprocess
+import sys
+import tempfile
+import textwrap
+import threading
+import time
+import traceback
+import warnings
+from socket import AF_INET
+from socket import AF_INET6
+from socket import SOCK_DGRAM
+from socket import SOCK_STREAM
+
+import psutil
+from psutil import MACOS
+from psutil import POSIX
+from psutil import SUNOS
+from psutil import WINDOWS
+from psutil._common import supports_ipv6
+from psutil._compat import PY3
+from psutil._compat import u
+from psutil._compat import unicode
+from psutil._compat import which
+
+if sys.version_info < (2, 7):
+    import unittest2 as unittest  # requires "pip install unittest2"
+else:
+    import unittest
+
+try:
+    from unittest import mock  # py3
+except ImportError:
+    with warnings.catch_warnings():
+        warnings.simplefilter("ignore")
+        import mock  # NOQA - requires "pip install mock"
+
+if sys.version_info >= (3, 4):
+    import enum
+else:
+    enum = None
+
+
+__all__ = [
+    # constants
+    'APPVEYOR', 'DEVNULL', 'GLOBAL_TIMEOUT', 'MEMORY_TOLERANCE', 'NO_RETRIES',
+    'PYPY', 'PYTHON_EXE', 'ROOT_DIR', 'SCRIPTS_DIR', 'TESTFILE_PREFIX',
+    'TESTFN', 'TESTFN_UNICODE', 'TOX', 'TRAVIS', 'VALID_PROC_STATUSES',
+    'VERBOSITY',
+    "HAS_CPU_AFFINITY", "HAS_CPU_FREQ", "HAS_ENVIRON", "HAS_PROC_IO_COUNTERS",
+    "HAS_IONICE", "HAS_MEMORY_MAPS", "HAS_PROC_CPU_NUM", "HAS_RLIMIT",
+    "HAS_SENSORS_BATTERY", "HAS_BATTERY", "HAS_SENSORS_FANS",
+    "HAS_SENSORS_TEMPERATURES", "HAS_MEMORY_FULL_INFO",
+    # subprocesses
+    'pyrun', 'reap_children', 'get_test_subprocess', 'create_zombie_proc',
+    'create_proc_children_pair',
+    # threads
+    'ThreadTask'
+    # test utils
+    'unittest', 'skip_on_access_denied', 'skip_on_not_implemented',
+    'retry_before_failing', 'run_test_module_by_name', 'get_suite',
+    'run_suite',
+    # install utils
+    'install_pip', 'install_test_deps',
+    # fs utils
+    'chdir', 'safe_rmpath', 'create_exe', 'decode_path', 'encode_path',
+    'unique_filename',
+    # os
+    'get_winver', 'get_kernel_version',
+    # sync primitives
+    'call_until', 'wait_for_pid', 'wait_for_file',
+    # network
+    'check_connection_ntuple', 'check_net_address',
+    'get_free_port', 'unix_socket_path', 'bind_socket', 'bind_unix_socket',
+    'tcp_socketpair', 'unix_socketpair', 'create_sockets',
+    # compat
+    'reload_module', 'import_module_by_path',
+    # others
+    'warn', 'copyload_shared_lib', 'is_namedtuple',
+]
+
+
+# ===================================================================
+# --- constants
+# ===================================================================
+
+# --- platforms
+
+TOX = os.getenv('TOX') or '' in ('1', 'true')
+PYPY = '__pypy__' in sys.builtin_module_names
+WIN_VISTA = (6, 0, 0) if WINDOWS else None
+# whether we're running this test suite on Travis (https://travis-ci.org/)
+TRAVIS = bool(os.environ.get('TRAVIS'))
+# whether we're running this test suite on Appveyor for Windows
+# (http://www.appveyor.com/)
+APPVEYOR = bool(os.environ.get('APPVEYOR'))
+PYPY = '__pypy__' in sys.builtin_module_names
+
+# --- configurable defaults
+
+# how many times retry_before_failing() decorator will retry
+NO_RETRIES = 10
+# bytes tolerance for system-wide memory related tests
+MEMORY_TOLERANCE = 500 * 1024  # 500KB
+# the timeout used in functions which have to wait
+GLOBAL_TIMEOUT = 3 if TRAVIS or APPVEYOR else 0.5
+# test output verbosity
+VERBOSITY = 1 if os.getenv('SILENT') or TOX else 2
+# be more tolerant if we're on travis / appveyor in order to avoid
+# false positives
+if TRAVIS or APPVEYOR:
+    NO_RETRIES *= 3
+    GLOBAL_TIMEOUT *= 3
+
+# --- files
+
+TESTFILE_PREFIX = '$testfn'
+if os.name == 'java':
+    # Jython disallows @ in module names
+    TESTFILE_PREFIX = '$psutil-test-'
+else:
+    TESTFILE_PREFIX = '@psutil-test-'
+TESTFN = os.path.join(os.path.realpath(os.getcwd()), TESTFILE_PREFIX)
+# Disambiguate TESTFN for parallel testing, while letting it remain a valid
+# module name.
+TESTFN = TESTFN + str(os.getpid())
+
+_TESTFN = TESTFN + '-internal'
+TESTFN_UNICODE = TESTFN + u("-ƒőő")
+ASCII_FS = sys.getfilesystemencoding().lower() in ('ascii', 'us-ascii')
+
+# --- paths
+
+ROOT_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..'))
+SCRIPTS_DIR = os.path.join(ROOT_DIR, 'scripts')
+HERE = os.path.abspath(os.path.dirname(__file__))
+
+# --- support
+
+HAS_CONNECTIONS_UNIX = POSIX and not SUNOS
+HAS_CPU_AFFINITY = hasattr(psutil.Process, "cpu_affinity")
+HAS_CPU_FREQ = hasattr(psutil, "cpu_freq")
+HAS_ENVIRON = hasattr(psutil.Process, "environ")
+HAS_IONICE = hasattr(psutil.Process, "ionice")
+HAS_MEMORY_MAPS = hasattr(psutil.Process, "memory_maps")
+HAS_NET_IO_COUNTERS = hasattr(psutil, "net_io_counters")
+HAS_PROC_CPU_NUM = hasattr(psutil.Process, "cpu_num")
+HAS_PROC_IO_COUNTERS = hasattr(psutil.Process, "io_counters")
+HAS_RLIMIT = hasattr(psutil.Process, "rlimit")
+HAS_SENSORS_BATTERY = hasattr(psutil, "sensors_battery")
+try:
+    HAS_BATTERY = HAS_SENSORS_BATTERY and bool(psutil.sensors_battery())
+except Exception:
+    HAS_BATTERY = True
+HAS_SENSORS_FANS = hasattr(psutil, "sensors_fans")
+HAS_SENSORS_TEMPERATURES = hasattr(psutil, "sensors_temperatures")
+HAS_THREADS = hasattr(psutil.Process, "threads")
+
+# --- misc
+
+
+def _get_py_exe():
+    def attempt(exe):
+        try:
+            subprocess.check_call(
+                [exe, "-V"], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        except Exception:
+            return None
+        else:
+            return exe
+
+    if MACOS:
+        exe = \
+            attempt(sys.executable) or \
+            attempt(os.path.realpath(sys.executable)) or \
+            attempt(which("python%s.%s" % sys.version_info[:2])) or \
+            attempt(psutil.Process().exe())
+        if not exe:
+            raise ValueError("can't find python exe real abspath")
+        return exe
+    else:
+        exe = os.path.realpath(sys.executable)
+        if WINDOWS:
+            # avoid subprocess warnings
+            exe = exe.replace('\\', '\\\\')
+        assert os.path.exists(exe), exe
+        return exe
+
+
+PYTHON_EXE = _get_py_exe()
+DEVNULL = open(os.devnull, 'r+')
+VALID_PROC_STATUSES = [getattr(psutil, x) for x in dir(psutil)
+                       if x.startswith('STATUS_')]
+AF_UNIX = getattr(socket, "AF_UNIX", object())
+SOCK_SEQPACKET = getattr(socket, "SOCK_SEQPACKET", object())
+
+_subprocesses_started = set()
+_pids_started = set()
+_testfiles_created = set()
+
+
+@atexit.register
+def cleanup_test_files():
+    DEVNULL.close()
+    for name in os.listdir(u('.')):
+        if isinstance(name, unicode):
+            prefix = u(TESTFILE_PREFIX)
+        else:
+            prefix = TESTFILE_PREFIX
+        if name.startswith(prefix):
+            try:
+                safe_rmpath(name)
+            except Exception:
+                traceback.print_exc()
+    for path in _testfiles_created:
+        try:
+            safe_rmpath(path)
+        except Exception:
+            traceback.print_exc()
+
+
+# this is executed first
+@atexit.register
+def cleanup_test_procs():
+    reap_children(recursive=True)
+
+
+# ===================================================================
+# --- threads
+# ===================================================================
+
+
+class ThreadTask(threading.Thread):
+    """A thread task which does nothing expect staying alive."""
+
+    def __init__(self):
+        threading.Thread.__init__(self)
+        self._running = False
+        self._interval = 0.001
+        self._flag = threading.Event()
+
+    def __repr__(self):
+        name = self.__class__.__name__
+        return '<%s running=%s at %#x>' % (name, self._running, id(self))
+
+    def __enter__(self):
+        self.start()
+        return self
+
+    def __exit__(self, *args, **kwargs):
+        self.stop()
+
+    def start(self):
+        """Start thread and keep it running until an explicit
+        stop() request. Polls for shutdown every 'timeout' seconds.
+        """
+        if self._running:
+            raise ValueError("already started")
+        threading.Thread.start(self)
+        self._flag.wait()
+
+    def run(self):
+        self._running = True
+        self._flag.set()
+        while self._running:
+            time.sleep(self._interval)
+
+    def stop(self):
+        """Stop thread execution and and waits until it is stopped."""
+        if not self._running:
+            raise ValueError("already stopped")
+        self._running = False
+        self.join()
+
+
+# ===================================================================
+# --- subprocesses
+# ===================================================================
+
+
+def _reap_children_on_err(fun):
+    @functools.wraps(fun)
+    def wrapper(*args, **kwargs):
+        try:
+            return fun(*args, **kwargs)
+        except Exception:
+            reap_children()
+            raise
+    return wrapper
+
+
+@_reap_children_on_err
+def get_test_subprocess(cmd=None, **kwds):
+    """Creates a python subprocess which does nothing for 60 secs and
+    return it as subprocess.Popen instance.
+    If "cmd" is specified that is used instead of python.
+    By default stdin and stdout are redirected to /dev/null.
+    It also attemps to make sure the process is in a reasonably
+    initialized state.
+    The process is registered for cleanup on reap_children().
+    """
+    kwds.setdefault("stdin", DEVNULL)
+    kwds.setdefault("stdout", DEVNULL)
+    kwds.setdefault("cwd", os.getcwd())
+    kwds.setdefault("env", os.environ)
+    if WINDOWS:
+        # Prevents the subprocess to open error dialogs. This will also
+        # cause stderr to be suppressed, which is suboptimal in order
+        # to debug broken tests.
+        CREATE_NO_WINDOW = 0x8000000
+        kwds.setdefault("creationflags", CREATE_NO_WINDOW)
+    if cmd is None:
+        safe_rmpath(_TESTFN)
+        pyline = "from time import sleep;" \
+                 "open(r'%s', 'w').close();" \
+                 "sleep(60);" % _TESTFN
+        cmd = [PYTHON_EXE, "-c", pyline]
+        sproc = subprocess.Popen(cmd, **kwds)
+        _subprocesses_started.add(sproc)
+        wait_for_file(_TESTFN, delete=True, empty=True)
+    else:
+        sproc = subprocess.Popen(cmd, **kwds)
+        _subprocesses_started.add(sproc)
+        wait_for_pid(sproc.pid)
+    return sproc
+
+
+@_reap_children_on_err
+def create_proc_children_pair():
+    """Create a subprocess which creates another one as in:
+    A (us) -> B (child) -> C (grandchild).
+    Return a (child, grandchild) tuple.
+    The 2 processes are fully initialized and will live for 60 secs
+    and are registered for cleanup on reap_children().
+    """
+    _TESTFN2 = os.path.basename(_TESTFN) + '2'  # need to be relative
+    s = textwrap.dedent("""\
+        import subprocess, os, sys, time
+        s = "import os, time;"
+        s += "f = open('%s', 'w');"
+        s += "f.write(str(os.getpid()));"
+        s += "f.close();"
+        s += "time.sleep(60);"
+        p = subprocess.Popen(['%s', '-c', s])
+        p.wait()
+        """ % (_TESTFN2, PYTHON_EXE))
+    # On Windows if we create a subprocess with CREATE_NO_WINDOW flag
+    # set (which is the default) a "conhost.exe" extra process will be
+    # spawned as a child. We don't want that.
+    if WINDOWS:
+        subp = pyrun(s, creationflags=0)
+    else:
+        subp = pyrun(s)
+    child1 = psutil.Process(subp.pid)
+    data = wait_for_file(_TESTFN2, delete=False, empty=False)
+    safe_rmpath(_TESTFN2)
+    child2_pid = int(data)
+    _pids_started.add(child2_pid)
+    child2 = psutil.Process(child2_pid)
+    return (child1, child2)
+
+
+def create_zombie_proc():
+    """Create a zombie process and return its PID."""
+    assert psutil.POSIX
+    unix_file = tempfile.mktemp(prefix=TESTFILE_PREFIX) if MACOS else TESTFN
+    src = textwrap.dedent("""\
+        import os, sys, time, socket, contextlib
+        child_pid = os.fork()
+        if child_pid > 0:
+            time.sleep(3000)
+        else:
+            # this is the zombie process
+            s = socket.socket(socket.AF_UNIX)
+            with contextlib.closing(s):
+                s.connect('%s')
+                if sys.version_info < (3, ):
+                    pid = str(os.getpid())
+                else:
+                    pid = bytes(str(os.getpid()), 'ascii')
+                s.sendall(pid)
+        """ % unix_file)
+    with contextlib.closing(socket.socket(socket.AF_UNIX)) as sock:
+        sock.settimeout(GLOBAL_TIMEOUT)
+        sock.bind(unix_file)
+        sock.listen(1)
+        pyrun(src)
+        conn, _ = sock.accept()
+        try:
+            select.select([conn.fileno()], [], [], GLOBAL_TIMEOUT)
+            zpid = int(conn.recv(1024))
+            _pids_started.add(zpid)
+            zproc = psutil.Process(zpid)
+            call_until(lambda: zproc.status(), "ret == psutil.STATUS_ZOMBIE")
+            return zpid
+        finally:
+            conn.close()
+
+
+@_reap_children_on_err
+def pyrun(src, **kwds):
+    """Run python 'src' code string in a separate interpreter.
+    Returns a subprocess.Popen instance.
+    """
+    kwds.setdefault("stdout", None)
+    kwds.setdefault("stderr", None)
+    with tempfile.NamedTemporaryFile(
+            prefix=TESTFILE_PREFIX, mode="wt", delete=False) as f:
+        _testfiles_created.add(f.name)
+        f.write(src)
+        f.flush()
+        subp = get_test_subprocess([PYTHON_EXE, f.name], **kwds)
+        wait_for_pid(subp.pid)
+    return subp
+
+
+@_reap_children_on_err
+def sh(cmd, **kwds):
+    """run cmd in a subprocess and return its output.
+    raises RuntimeError on error.
+    """
+    shell = True if isinstance(cmd, (str, unicode)) else False
+    # Prevents subprocess to open error dialogs in case of error.
+    flags = 0x8000000 if WINDOWS and shell else 0
+    kwds.setdefault("shell", shell)
+    kwds.setdefault("stdout", subprocess.PIPE)
+    kwds.setdefault("stderr", subprocess.PIPE)
+    kwds.setdefault("universal_newlines", True)
+    kwds.setdefault("creationflags", flags)
+    p = subprocess.Popen(cmd, **kwds)
+    _subprocesses_started.add(p)
+    stdout, stderr = p.communicate()
+    if p.returncode != 0:
+        raise RuntimeError(stderr)
+    if stderr:
+        warn(stderr)
+    if stdout.endswith('\n'):
+        stdout = stdout[:-1]
+    return stdout
+
+
+def reap_children(recursive=False):
+    """Terminate and wait() any subprocess started by this test suite
+    and ensure that no zombies stick around to hog resources and
+    create problems  when looking for refleaks.
+
+    If resursive is True it also tries to terminate and wait()
+    all grandchildren started by this process.
+    """
+    # This is here to make sure wait_procs() behaves properly and
+    # investigate:
+    # https://ci.appveyor.com/project/giampaolo/psutil/build/job/
+    #     jiq2cgd6stsbtn60
+    def assert_gone(pid):
+        assert not psutil.pid_exists(pid), pid
+        assert pid not in psutil.pids(), pid
+        try:
+            p = psutil.Process(pid)
+            assert not p.is_running(), pid
+        except psutil.NoSuchProcess:
+            pass
+        else:
+            assert 0, "pid %s is not gone" % pid
+
+    # Get the children here, before terminating the children sub
+    # processes as we don't want to lose the intermediate reference
+    # in case of grandchildren.
+    if recursive:
+        children = set(psutil.Process().children(recursive=True))
+    else:
+        children = set()
+
+    # Terminate subprocess.Popen instances "cleanly" by closing their
+    # fds and wiat()ing for them in order to avoid zombies.
+    while _subprocesses_started:
+        subp = _subprocesses_started.pop()
+        _pids_started.add(subp.pid)
+        try:
+            subp.terminate()
+        except OSError as err:
+            if WINDOWS and err.winerror == 6:  # "invalid handle"
+                pass
+            elif err.errno != errno.ESRCH:
+                raise
+        if subp.stdout:
+            subp.stdout.close()
+        if subp.stderr:
+            subp.stderr.close()
+        try:
+            # Flushing a BufferedWriter may raise an error.
+            if subp.stdin:
+                subp.stdin.close()
+        finally:
+            # Wait for the process to terminate, to avoid zombies.
+            try:
+                subp.wait()
+            except OSError as err:
+                if err.errno != errno.ECHILD:
+                    raise
+
+    # Terminate started pids.
+    while _pids_started:
+        pid = _pids_started.pop()
+        try:
+            p = psutil.Process(pid)
+        except psutil.NoSuchProcess:
+            assert_gone(pid)
+        else:
+            children.add(p)
+
+    # Terminate children.
+    if children:
+        for p in children:
+            try:
+                p.terminate()
+            except psutil.NoSuchProcess:
+                pass
+        gone, alive = psutil.wait_procs(children, timeout=GLOBAL_TIMEOUT)
+        for p in alive:
+            warn("couldn't terminate process %r; attempting kill()" % p)
+            try:
+                p.kill()
+            except psutil.NoSuchProcess:
+                pass
+        gone, alive = psutil.wait_procs(alive, timeout=GLOBAL_TIMEOUT)
+        if alive:
+            for p in alive:
+                warn("process %r survived kill()" % p)
+
+        for p in children:
+            assert_gone(p.pid)
+
+
+# ===================================================================
+# --- OS
+# ===================================================================
+
+
+def get_kernel_version():
+    """Return a tuple such as (2, 6, 36)."""
+    if not POSIX:
+        raise NotImplementedError("not POSIX")
+    s = ""
+    uname = os.uname()[2]
+    for c in uname:
+        if c.isdigit() or c == '.':
+            s += c
+        else:
+            break
+    if not s:
+        raise ValueError("can't parse %r" % uname)
+    minor = 0
+    micro = 0
+    nums = s.split('.')
+    major = int(nums[0])
+    if len(nums) >= 2:
+        minor = int(nums[1])
+    if len(nums) >= 3:
+        micro = int(nums[2])
+    return (major, minor, micro)
+
+
+def get_winver():
+    if not WINDOWS:
+        raise NotImplementedError("not WINDOWS")
+    wv = sys.getwindowsversion()
+    if hasattr(wv, 'service_pack_major'):  # python >= 2.7
+        sp = wv.service_pack_major or 0
+    else:
+        r = re.search(r"\s\d$", wv[4])
+        if r:
+            sp = int(r.group(0))
+        else:
+            sp = 0
+    return (wv[0], wv[1], sp)
+
+
+# ===================================================================
+# --- sync primitives
+# ===================================================================
+
+
+class retry(object):
+    """A retry decorator."""
+
+    def __init__(self,
+                 exception=Exception,
+                 timeout=None,
+                 retries=None,
+                 interval=0.001,
+                 logfun=print,
+                 ):
+        if timeout and retries:
+            raise ValueError("timeout and retries args are mutually exclusive")
+        self.exception = exception
+        self.timeout = timeout
+        self.retries = retries
+        self.interval = interval
+        self.logfun = logfun
+
+    def __iter__(self):
+        if self.timeout:
+            stop_at = time.time() + self.timeout
+            while time.time() < stop_at:
+                yield
+        elif self.retries:
+            for _ in range(self.retries):
+                yield
+        else:
+            while True:
+                yield
+
+    def sleep(self):
+        if self.interval is not None:
+            time.sleep(self.interval)
+
+    def __call__(self, fun):
+        @functools.wraps(fun)
+        def wrapper(*args, **kwargs):
+            exc = None
+            for _ in self:
+                try:
+                    return fun(*args, **kwargs)
+                except self.exception as _:  # NOQA
+                    exc = _
+                    if self.logfun is not None:
+                        self.logfun(exc)
+                    self.sleep()
+                    continue
+            if PY3:
+                raise exc
+            else:
+                raise
+
+        # This way the user of the decorated function can change config
+        # parameters.
+        wrapper.decorator = self
+        return wrapper
+
+
+@retry(exception=psutil.NoSuchProcess, logfun=None, timeout=GLOBAL_TIMEOUT,
+       interval=0.001)
+def wait_for_pid(pid):
+    """Wait for pid to show up in the process list then return.
+    Used in the test suite to give time the sub process to initialize.
+    """
+    psutil.Process(pid)
+    if WINDOWS:
+        # give it some more time to allow better initialization
+        time.sleep(0.01)
+
+
+@retry(exception=(EnvironmentError, AssertionError), logfun=None,
+       timeout=GLOBAL_TIMEOUT, interval=0.001)
+def wait_for_file(fname, delete=True, empty=False):
+    """Wait for a file to be written on disk with some content."""
+    with open(fname, "rb") as f:
+        data = f.read()
+    if not empty:
+        assert data
+    if delete:
+        safe_rmpath(fname)
+    return data
+
+
+@retry(exception=AssertionError, logfun=None, timeout=GLOBAL_TIMEOUT,
+       interval=0.001)
+def call_until(fun, expr):
+    """Keep calling function for timeout secs and exit if eval()
+    expression is True.
+    """
+    ret = fun()
+    assert eval(expr)
+    return ret
+
+
+# ===================================================================
+# --- fs
+# ===================================================================
+
+
+def safe_rmpath(path):
+    "Convenience function for removing temporary test files or dirs"
+    def retry_fun(fun):
+        # On Windows it could happen that the file or directory has
+        # open handles or references preventing the delete operation
+        # to succeed immediately, so we retry for a while. See:
+        # https://bugs.python.org/issue33240
+        stop_at = time.time() + 1
+        while time.time() < stop_at:
+            try:
+                return fun()
+            except WindowsError as _:
+                err = _
+                if err.errno != errno.ENOENT:
+                    raise
+                else:
+                    warn("ignoring %s" % (str(err)))
+                    time.sleep(0.01)
+        raise err
+
+    try:
+        st = os.stat(path)
+        if stat.S_ISDIR(st.st_mode):
+            fun = functools.partial(shutil.rmtree, path)
+        else:
+            fun = functools.partial(os.remove, path)
+        if POSIX:
+            fun()
+        else:
+            retry_fun(fun)
+    except OSError as err:
+        if err.errno != errno.ENOENT:
+            raise
+
+
+def safe_mkdir(dir):
+    "Convenience function for creating a directory"
+    try:
+        os.mkdir(dir)
+    except OSError as err:
+        if err.errno != errno.EEXIST:
+            raise
+
+
+@contextlib.contextmanager
+def chdir(dirname):
+    "Context manager which temporarily changes the current directory."
+    curdir = os.getcwd()
+    try:
+        os.chdir(dirname)
+        yield
+    finally:
+        os.chdir(curdir)
+
+
+def create_exe(outpath, c_code=None):
+    """Creates an executable file in the given location."""
+    assert not os.path.exists(outpath), outpath
+    if c_code:
+        if not which("gcc"):
+            raise ValueError("gcc is not installed")
+        if isinstance(c_code, bool):        # c_code is True
+            c_code = textwrap.dedent(
+                """
+                #include <unistd.h>
+                int main() {
+                    pause();
+                    return 1;
+                }
+                """)
+        assert isinstance(c_code, str), c_code
+        with tempfile.NamedTemporaryFile(
+                suffix='.c', delete=False, mode='wt') as f:
+            f.write(c_code)
+        try:
+            subprocess.check_call(["gcc", f.name, "-o", outpath])
+        finally:
+            safe_rmpath(f.name)
+    else:
+        # copy python executable
+        shutil.copyfile(PYTHON_EXE, outpath)
+        if POSIX:
+            st = os.stat(outpath)
+            os.chmod(outpath, st.st_mode | stat.S_IEXEC)
+
+
+def unique_filename(prefix=TESTFILE_PREFIX, suffix=""):
+    return tempfile.mktemp(prefix=prefix, suffix=suffix)
+
+
+# ===================================================================
+# --- testing
+# ===================================================================
+
+
+class TestCase(unittest.TestCase):
+
+    # Print a full path representation of the single unit tests
+    # being run.
+    def __str__(self):
+        return "%s.%s.%s" % (
+            self.__class__.__module__, self.__class__.__name__,
+            self._testMethodName)
+
+    # assertRaisesRegexp renamed to assertRaisesRegex in 3.3;
+    # add support for the new name.
+    if not hasattr(unittest.TestCase, 'assertRaisesRegex'):
+        assertRaisesRegex = unittest.TestCase.assertRaisesRegexp
+
+
+# override default unittest.TestCase
+unittest.TestCase = TestCase
+
+
+def _setup_tests():
+    if 'PSUTIL_TESTING' not in os.environ:
+        # This won't work on Windows but set_testing() below will do it.
+        os.environ['PSUTIL_TESTING'] = '1'
+    psutil._psplatform.cext.set_testing()
+
+
+def get_suite():
+    testmods = [os.path.splitext(x)[0] for x in os.listdir(HERE)
+                if x.endswith('.py') and x.startswith('test_') and not
+                x.startswith('test_memory_leaks')]
+    if "WHEELHOUSE_UPLOADER_USERNAME" in os.environ:
+        testmods = [x for x in testmods if not x.endswith((
+                    "osx", "posix", "linux"))]
+    suite = unittest.TestSuite()
+    for tm in testmods:
+        # ...so that the full test paths are printed on screen
+        tm = "psutil.tests.%s" % tm
+        suite.addTest(unittest.defaultTestLoader.loadTestsFromName(tm))
+    return suite
+
+
+def run_suite():
+    _setup_tests()
+    result = unittest.TextTestRunner(verbosity=VERBOSITY).run(get_suite())
+    success = result.wasSuccessful()
+    sys.exit(0 if success else 1)
+
+
+def run_test_module_by_name(name):
+    # testmodules = [os.path.splitext(x)[0] for x in os.listdir(HERE)
+    #                if x.endswith('.py') and x.startswith('test_')]
+    _setup_tests()
+    name = os.path.splitext(os.path.basename(name))[0]
+    suite = unittest.TestSuite()
+    suite.addTest(unittest.defaultTestLoader.loadTestsFromName(name))
+    result = unittest.TextTestRunner(verbosity=VERBOSITY).run(suite)
+    success = result.wasSuccessful()
+    sys.exit(0 if success else 1)
+
+
+def retry_before_failing(retries=NO_RETRIES):
+    """Decorator which runs a test function and retries N times before
+    actually failing.
+    """
+    return retry(exception=AssertionError, timeout=None, retries=retries)
+
+
+def skip_on_access_denied(only_if=None):
+    """Decorator to Ignore AccessDenied exceptions."""
+    def decorator(fun):
+        @functools.wraps(fun)
+        def wrapper(*args, **kwargs):
+            try:
+                return fun(*args, **kwargs)
+            except psutil.AccessDenied:
+                if only_if is not None:
+                    if not only_if:
+                        raise
+                raise unittest.SkipTest("raises AccessDenied")
+        return wrapper
+    return decorator
+
+
+def skip_on_not_implemented(only_if=None):
+    """Decorator to Ignore NotImplementedError exceptions."""
+    def decorator(fun):
+        @functools.wraps(fun)
+        def wrapper(*args, **kwargs):
+            try:
+                return fun(*args, **kwargs)
+            except NotImplementedError:
+                if only_if is not None:
+                    if not only_if:
+                        raise
+                msg = "%r was skipped because it raised NotImplementedError" \
+                      % fun.__name__
+                raise unittest.SkipTest(msg)
+        return wrapper
+    return decorator
+
+
+# ===================================================================
+# --- network
+# ===================================================================
+
+
+def get_free_port(host='127.0.0.1'):
+    """Return an unused TCP port."""
+    with contextlib.closing(socket.socket()) as sock:
+        sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+        sock.bind((host, 0))
+        return sock.getsockname()[1]
+
+
+@contextlib.contextmanager
+def unix_socket_path(suffix=""):
+    """A context manager which returns a non-existent file name
+    and tries to delete it on exit.
+    """
+    assert psutil.POSIX
+    path = unique_filename(suffix=suffix)
+    try:
+        yield path
+    finally:
+        try:
+            os.unlink(path)
+        except OSError:
+            pass
+
+
+def bind_socket(family=AF_INET, type=SOCK_STREAM, addr=None):
+    """Binds a generic socket."""
+    if addr is None and family in (AF_INET, AF_INET6):
+        addr = ("", 0)
+    sock = socket.socket(family, type)
+    try:
+        sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+        sock.bind(addr)
+        if type == socket.SOCK_STREAM:
+            sock.listen(10)
+        return sock
+    except Exception:
+        sock.close()
+        raise
+
+
+def bind_unix_socket(name, type=socket.SOCK_STREAM):
+    """Bind a UNIX socket."""
+    assert psutil.POSIX
+    assert not os.path.exists(name), name
+    sock = socket.socket(socket.AF_UNIX, type)
+    try:
+        sock.bind(name)
+        if type == socket.SOCK_STREAM:
+            sock.listen(10)
+    except Exception:
+        sock.close()
+        raise
+    return sock
+
+
+def tcp_socketpair(family, addr=("", 0)):
+    """Build a pair of TCP sockets connected to each other.
+    Return a (server, client) tuple.
+    """
+    with contextlib.closing(socket.socket(family, SOCK_STREAM)) as ll:
+        ll.bind(addr)
+        ll.listen(10)
+        addr = ll.getsockname()
+        c = socket.socket(family, SOCK_STREAM)
+        try:
+            c.connect(addr)
+            caddr = c.getsockname()
+            while True:
+                a, addr = ll.accept()
+                # check that we've got the correct client
+                if addr == caddr:
+                    return (a, c)
+                a.close()
+        except OSError:
+            c.close()
+            raise
+
+
+def unix_socketpair(name):
+    """Build a pair of UNIX sockets connected to each other through
+    the same UNIX file name.
+    Return a (server, client) tuple.
+    """
+    assert psutil.POSIX
+    server = client = None
+    try:
+        server = bind_unix_socket(name, type=socket.SOCK_STREAM)
+        server.setblocking(0)
+        client = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+        client.setblocking(0)
+        client.connect(name)
+        # new = server.accept()
+    except Exception:
+        if server is not None:
+            server.close()
+        if client is not None:
+            client.close()
+        raise
+    return (server, client)
+
+
+@contextlib.contextmanager
+def create_sockets():
+    """Open as many socket families / types as possible."""
+    socks = []
+    fname1 = fname2 = None
+    try:
+        socks.append(bind_socket(socket.AF_INET, socket.SOCK_STREAM))
+        socks.append(bind_socket(socket.AF_INET, socket.SOCK_DGRAM))
+        if supports_ipv6():
+            socks.append(bind_socket(socket.AF_INET6, socket.SOCK_STREAM))
+            socks.append(bind_socket(socket.AF_INET6, socket.SOCK_DGRAM))
+        if POSIX and HAS_CONNECTIONS_UNIX:
+            fname1 = unix_socket_path().__enter__()
+            fname2 = unix_socket_path().__enter__()
+            s1, s2 = unix_socketpair(fname1)
+            s3 = bind_unix_socket(fname2, type=socket.SOCK_DGRAM)
+            # self.addCleanup(safe_rmpath, fname1)
+            # self.addCleanup(safe_rmpath, fname2)
+            for s in (s1, s2, s3):
+                socks.append(s)
+        yield socks
+    finally:
+        for s in socks:
+            s.close()
+        if fname1 is not None:
+            safe_rmpath(fname1)
+        if fname2 is not None:
+            safe_rmpath(fname2)
+
+
+def check_net_address(addr, family):
+    """Check a net address validity. Supported families are IPv4,
+    IPv6 and MAC addresses.
+    """
+    import ipaddress  # python >= 3.3 / requires "pip install ipaddress"
+    if enum and PY3:
+        assert isinstance(family, enum.IntEnum), family
+    if family == socket.AF_INET:
+        octs = [int(x) for x in addr.split('.')]
+        assert len(octs) == 4, addr
+        for num in octs:
+            assert 0 <= num <= 255, addr
+        if not PY3:
+            addr = unicode(addr)
+        ipaddress.IPv4Address(addr)
+    elif family == socket.AF_INET6:
+        assert isinstance(addr, str), addr
+        if not PY3:
+            addr = unicode(addr)
+        ipaddress.IPv6Address(addr)
+    elif family == psutil.AF_LINK:
+        assert re.match(r'([a-fA-F0-9]{2}[:|\-]?){6}', addr) is not None, addr
+    else:
+        raise ValueError("unknown family %r", family)
+
+
+def check_connection_ntuple(conn):
+    """Check validity of a connection namedtuple."""
+    # check ntuple
+    assert len(conn) in (6, 7), conn
+    has_pid = len(conn) == 7
+    has_fd = getattr(conn, 'fd', -1) != -1
+    assert conn[0] == conn.fd
+    assert conn[1] == conn.family
+    assert conn[2] == conn.type
+    assert conn[3] == conn.laddr
+    assert conn[4] == conn.raddr
+    assert conn[5] == conn.status
+    if has_pid:
+        assert conn[6] == conn.pid
+
+    # check fd
+    if has_fd:
+        assert conn.fd >= 0, conn
+        if hasattr(socket, 'fromfd') and not WINDOWS:
+            try:
+                dupsock = socket.fromfd(conn.fd, conn.family, conn.type)
+            except (socket.error, OSError) as err:
+                if err.args[0] != errno.EBADF:
+                    raise
+            else:
+                with contextlib.closing(dupsock):
+                    assert dupsock.family == conn.family
+                    assert dupsock.type == conn.type
+
+    # check family
+    assert conn.family in (AF_INET, AF_INET6, AF_UNIX), repr(conn.family)
+    if conn.family in (AF_INET, AF_INET6):
+        # actually try to bind the local socket; ignore IPv6
+        # sockets as their address might be represented as
+        # an IPv4-mapped-address (e.g. "::127.0.0.1")
+        # and that's rejected by bind()
+        if conn.family == AF_INET:
+            s = socket.socket(conn.family, conn.type)
+            with contextlib.closing(s):
+                try:
+                    s.bind((conn.laddr[0], 0))
+                except socket.error as err:
+                    if err.errno != errno.EADDRNOTAVAIL:
+                        raise
+    elif conn.family == AF_UNIX:
+        assert conn.status == psutil.CONN_NONE, conn.status
+
+    # check type (SOCK_SEQPACKET may happen in case of AF_UNIX socks)
+    assert conn.type in (SOCK_STREAM, SOCK_DGRAM, SOCK_SEQPACKET), \
+        repr(conn.type)
+    if conn.type == SOCK_DGRAM:
+        assert conn.status == psutil.CONN_NONE, conn.status
+
+    # check laddr (IP address and port sanity)
+    for addr in (conn.laddr, conn.raddr):
+        if conn.family in (AF_INET, AF_INET6):
+            assert isinstance(addr, tuple), addr
+            if not addr:
+                continue
+            assert isinstance(addr.port, int), addr.port
+            assert 0 <= addr.port <= 65535, addr.port
+            check_net_address(addr.ip, conn.family)
+        elif conn.family == AF_UNIX:
+            assert isinstance(addr, str), addr
+
+    # check status
+    assert isinstance(conn.status, str), conn
+    valids = [getattr(psutil, x) for x in dir(psutil) if x.startswith('CONN_')]
+    assert conn.status in valids, conn
+
+
+# ===================================================================
+# --- compatibility
+# ===================================================================
+
+
+def reload_module(module):
+    """Backport of importlib.reload of Python 3.3+."""
+    try:
+        import importlib
+        if not hasattr(importlib, 'reload'):  # python <=3.3
+            raise ImportError
+    except ImportError:
+        import imp
+        return imp.reload(module)
+    else:
+        return importlib.reload(module)
+
+
+def import_module_by_path(path):
+    name = os.path.splitext(os.path.basename(path))[0]
+    if sys.version_info[0] == 2:
+        import imp
+        return imp.load_source(name, path)
+    elif sys.version_info[:2] <= (3, 4):
+        from importlib.machinery import SourceFileLoader
+        return SourceFileLoader(name, path).load_module()
+    else:
+        import importlib.util
+        spec = importlib.util.spec_from_file_location(name, path)
+        mod = importlib.util.module_from_spec(spec)
+        spec.loader.exec_module(mod)
+        return mod
+
+
+# ===================================================================
+# --- others
+# ===================================================================
+
+
+def warn(msg):
+    """Raise a warning msg."""
+    warnings.warn(msg, UserWarning)
+
+
+def is_namedtuple(x):
+    """Check if object is an instance of namedtuple."""
+    t = type(x)
+    b = t.__bases__
+    if len(b) != 1 or b[0] != tuple:
+        return False
+    f = getattr(t, '_fields', None)
+    if not isinstance(f, tuple):
+        return False
+    return all(type(n) == str for n in f)
+
+
+if POSIX:
+    @contextlib.contextmanager
+    def copyload_shared_lib(dst_prefix=TESTFILE_PREFIX):
+        """Ctx manager which picks up a random shared CO lib used
+        by this process, copies it in another location and loads it
+        in memory via ctypes. Return the new absolutized path.
+        """
+        exe = 'pypy' if PYPY else 'python'
+        ext = ".so"
+        dst = tempfile.mktemp(prefix=dst_prefix, suffix=ext)
+        libs = [x.path for x in psutil.Process().memory_maps() if
+                os.path.splitext(x.path)[1] == ext and
+                exe in x.path.lower()]
+        src = random.choice(libs)
+        shutil.copyfile(src, dst)
+        try:
+            ctypes.CDLL(dst)
+            yield dst
+        finally:
+            safe_rmpath(dst)
+else:
+    @contextlib.contextmanager
+    def copyload_shared_lib(dst_prefix=TESTFILE_PREFIX):
+        """Ctx manager which picks up a random shared DLL lib used
+        by this process, copies it in another location and loads it
+        in memory via ctypes.
+        Return the new absolutized, normcased path.
+        """
+        from ctypes import wintypes
+        from ctypes import WinError
+        ext = ".dll"
+        dst = tempfile.mktemp(prefix=dst_prefix, suffix=ext)
+        libs = [x.path for x in psutil.Process().memory_maps() if
+                os.path.splitext(x.path)[1].lower() == ext and
+                'python' in os.path.basename(x.path).lower() and
+                'wow64' not in x.path.lower()]
+        src = random.choice(libs)
+        shutil.copyfile(src, dst)
+        cfile = None
+        try:
+            cfile = ctypes.WinDLL(dst)
+            yield dst
+        finally:
+            # Work around OverflowError:
+            # - https://ci.appveyor.com/project/giampaolo/psutil/build/1207/
+            #       job/o53330pbnri9bcw7
+            # - http://bugs.python.org/issue30286
+            # - http://stackoverflow.com/questions/23522055
+            if cfile is not None:
+                FreeLibrary = ctypes.windll.kernel32.FreeLibrary
+                FreeLibrary.argtypes = [wintypes.HMODULE]
+                ret = FreeLibrary(cfile._handle)
+                if ret == 0:
+                    WinError()
+            safe_rmpath(dst)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/__main__.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/__main__.py
new file mode 100644
index 00000000..36554a12
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/__main__.py
@@ -0,0 +1,94 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""
+Run unit tests. This is invoked by:
+
+$ python -m psutil.tests
+"""
+
+import contextlib
+import optparse
+import os
+import sys
+import tempfile
+try:
+    from urllib.request import urlopen  # py3
+except ImportError:
+    from urllib2 import urlopen
+
+from psutil.tests import PYTHON_EXE
+from psutil.tests import run_suite
+
+
+HERE = os.path.abspath(os.path.dirname(__file__))
+GET_PIP_URL = "https://bootstrap.pypa.io/get-pip.py"
+TEST_DEPS = []
+if sys.version_info[:2] == (2, 6):
+    TEST_DEPS.extend(["ipaddress", "unittest2", "argparse", "mock==1.0.1"])
+elif sys.version_info[:2] == (2, 7) or sys.version_info[:2] <= (3, 2):
+    TEST_DEPS.extend(["ipaddress", "mock"])
+
+
+def install_pip():
+    try:
+        import pip  # NOQA
+    except ImportError:
+        import ssl
+        f = tempfile.NamedTemporaryFile(suffix='.py')
+        with contextlib.closing(f):
+            print("downloading %s to %s" % (GET_PIP_URL, f.name))
+            if hasattr(ssl, '_create_unverified_context'):
+                ctx = ssl._create_unverified_context()
+            else:
+                ctx = None
+            kwargs = dict(context=ctx) if ctx else {}
+            req = urlopen(GET_PIP_URL, **kwargs)
+            data = req.read()
+            f.write(data)
+            f.flush()
+
+            print("installing pip")
+            code = os.system('%s %s --user' % (PYTHON_EXE, f.name))
+            return code
+
+
+def install_test_deps(deps=None):
+    """Install test dependencies via pip."""
+    if deps is None:
+        deps = TEST_DEPS
+    deps = set(deps)
+    if deps:
+        is_venv = hasattr(sys, 'real_prefix')
+        opts = "--user" if not is_venv else ""
+        install_pip()
+        code = os.system('%s -m pip install %s --upgrade %s' % (
+            PYTHON_EXE, opts, " ".join(deps)))
+        return code
+
+
+def main():
+    usage = "%s -m psutil.tests [opts]" % PYTHON_EXE
+    parser = optparse.OptionParser(usage=usage, description="run unit tests")
+    parser.add_option("-i", "--install-deps",
+                      action="store_true", default=False,
+                      help="don't print status messages to stdout")
+
+    opts, args = parser.parse_args()
+    if opts.install_deps:
+        install_pip()
+        install_test_deps()
+    else:
+        for dep in TEST_DEPS:
+            try:
+                __import__(dep.split("==")[0])
+            except ImportError:
+                sys.exit("%r lib is not installed; run %s -m psutil.tests "
+                         "--install-deps" % (dep, PYTHON_EXE))
+        run_suite()
+
+
+main()
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diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_aix.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_aix.py
new file mode 100644
index 00000000..4f0da4e0
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_aix.py
@@ -0,0 +1,121 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2009, Giampaolo Rodola'
+# Copyright (c) 2017, Arnon Yaari
+# All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""AIX specific tests."""
+
+import re
+
+from psutil import AIX
+from psutil.tests import run_test_module_by_name
+from psutil.tests import sh
+from psutil.tests import unittest
+import psutil
+
+
+@unittest.skipIf(not AIX, "AIX only")
+class AIXSpecificTestCase(unittest.TestCase):
+
+    def test_virtual_memory(self):
+        out = sh('/usr/bin/svmon -O unit=KB')
+        re_pattern = r"memory\s*"
+        for field in ("size inuse free pin virtual available mmode").split():
+            re_pattern += r"(?P<%s>\S+)\s+" % (field,)
+        matchobj = re.search(re_pattern, out)
+
+        self.assertIsNotNone(
+            matchobj, "svmon command returned unexpected output")
+
+        KB = 1024
+        total = int(matchobj.group("size")) * KB
+        available = int(matchobj.group("available")) * KB
+        used = int(matchobj.group("inuse")) * KB
+        free = int(matchobj.group("free")) * KB
+
+        psutil_result = psutil.virtual_memory()
+
+        # MEMORY_TOLERANCE from psutil.tests is not enough. For some reason
+        # we're seeing differences of ~1.2 MB. 2 MB is still a good tolerance
+        # when compared to GBs.
+        MEMORY_TOLERANCE = 2 * KB * KB   # 2 MB
+        self.assertEqual(psutil_result.total, total)
+        self.assertAlmostEqual(
+            psutil_result.used, used, delta=MEMORY_TOLERANCE)
+        self.assertAlmostEqual(
+            psutil_result.available, available, delta=MEMORY_TOLERANCE)
+        self.assertAlmostEqual(
+            psutil_result.free, free, delta=MEMORY_TOLERANCE)
+
+    def test_swap_memory(self):
+        out = sh('/usr/sbin/lsps -a')
+        # From the man page, "The size is given in megabytes" so we assume
+        # we'll always have 'MB' in the result
+        # TODO maybe try to use "swap -l" to check "used" too, but its units
+        # are not guaranteed to be "MB" so parsing may not be consistent
+        matchobj = re.search(r"(?P<space>\S+)\s+"
+                             r"(?P<vol>\S+)\s+"
+                             r"(?P<vg>\S+)\s+"
+                             r"(?P<size>\d+)MB", out)
+
+        self.assertIsNotNone(
+            matchobj, "lsps command returned unexpected output")
+
+        total_mb = int(matchobj.group("size"))
+        MB = 1024 ** 2
+        psutil_result = psutil.swap_memory()
+        # we divide our result by MB instead of multiplying the lsps value by
+        # MB because lsps may round down, so we round down too
+        self.assertEqual(int(psutil_result.total / MB), total_mb)
+
+    def test_cpu_stats(self):
+        out = sh('/usr/bin/mpstat -a')
+
+        re_pattern = r"ALL\s*"
+        for field in ("min maj mpcs mpcr dev soft dec ph cs ics bound rq "
+                      "push S3pull S3grd S0rd S1rd S2rd S3rd S4rd S5rd "
+                      "sysc").split():
+            re_pattern += r"(?P<%s>\S+)\s+" % (field,)
+        matchobj = re.search(re_pattern, out)
+
+        self.assertIsNotNone(
+            matchobj, "mpstat command returned unexpected output")
+
+        # numbers are usually in the millions so 1000 is ok for tolerance
+        CPU_STATS_TOLERANCE = 1000
+        psutil_result = psutil.cpu_stats()
+        self.assertAlmostEqual(
+            psutil_result.ctx_switches,
+            int(matchobj.group("cs")),
+            delta=CPU_STATS_TOLERANCE)
+        self.assertAlmostEqual(
+            psutil_result.syscalls,
+            int(matchobj.group("sysc")),
+            delta=CPU_STATS_TOLERANCE)
+        self.assertAlmostEqual(
+            psutil_result.interrupts,
+            int(matchobj.group("dev")),
+            delta=CPU_STATS_TOLERANCE)
+        self.assertAlmostEqual(
+            psutil_result.soft_interrupts,
+            int(matchobj.group("soft")),
+            delta=CPU_STATS_TOLERANCE)
+
+    def test_cpu_count_logical(self):
+        out = sh('/usr/bin/mpstat -a')
+        mpstat_lcpu = int(re.search(r"lcpu=(\d+)", out).group(1))
+        psutil_lcpu = psutil.cpu_count(logical=True)
+        self.assertEqual(mpstat_lcpu, psutil_lcpu)
+
+    def test_net_if_addrs_names(self):
+        out = sh('/etc/ifconfig -l')
+        ifconfig_names = set(out.split())
+        psutil_names = set(psutil.net_if_addrs().keys())
+        self.assertSetEqual(ifconfig_names, psutil_names)
+
+
+if __name__ == '__main__':
+    run_test_module_by_name(__file__)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_bsd.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_bsd.py
new file mode 100644
index 00000000..34b66ca6
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_bsd.py
@@ -0,0 +1,553 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# TODO: (FreeBSD) add test for comparing connections with 'sockstat' cmd.
+
+
+"""Tests specific to all BSD platforms."""
+
+
+import datetime
+import os
+import re
+import time
+
+import psutil
+from psutil import BSD
+from psutil import FREEBSD
+from psutil import NETBSD
+from psutil import OPENBSD
+from psutil.tests import get_test_subprocess
+from psutil.tests import HAS_BATTERY
+from psutil.tests import MEMORY_TOLERANCE
+from psutil.tests import reap_children
+from psutil.tests import retry_before_failing
+from psutil.tests import run_test_module_by_name
+from psutil.tests import sh
+from psutil.tests import unittest
+from psutil.tests import which
+
+
+if BSD:
+    PAGESIZE = os.sysconf("SC_PAGE_SIZE")
+    if os.getuid() == 0:  # muse requires root privileges
+        MUSE_AVAILABLE = which('muse')
+    else:
+        MUSE_AVAILABLE = False
+else:
+    MUSE_AVAILABLE = False
+
+
+def sysctl(cmdline):
+    """Expects a sysctl command with an argument and parse the result
+    returning only the value of interest.
+    """
+    result = sh("sysctl " + cmdline)
+    if FREEBSD:
+        result = result[result.find(": ") + 2:]
+    elif OPENBSD or NETBSD:
+        result = result[result.find("=") + 1:]
+    try:
+        return int(result)
+    except ValueError:
+        return result
+
+
+def muse(field):
+    """Thin wrapper around 'muse' cmdline utility."""
+    out = sh('muse')
+    for line in out.split('\n'):
+        if line.startswith(field):
+            break
+    else:
+        raise ValueError("line not found")
+    return int(line.split()[1])
+
+
+# =====================================================================
+# --- All BSD*
+# =====================================================================
+
+
+@unittest.skipIf(not BSD, "BSD only")
+class BSDSpecificTestCase(unittest.TestCase):
+    """Generic tests common to all BSD variants."""
+
+    @classmethod
+    def setUpClass(cls):
+        cls.pid = get_test_subprocess().pid
+
+    @classmethod
+    def tearDownClass(cls):
+        reap_children()
+
+    @unittest.skipIf(NETBSD, "-o lstart doesn't work on NETBSD")
+    def test_process_create_time(self):
+        output = sh("ps -o lstart -p %s" % self.pid)
+        start_ps = output.replace('STARTED', '').strip()
+        start_psutil = psutil.Process(self.pid).create_time()
+        start_psutil = time.strftime("%a %b %e %H:%M:%S %Y",
+                                     time.localtime(start_psutil))
+        self.assertEqual(start_ps, start_psutil)
+
+    def test_disks(self):
+        # test psutil.disk_usage() and psutil.disk_partitions()
+        # against "df -a"
+        def df(path):
+            out = sh('df -k "%s"' % path).strip()
+            lines = out.split('\n')
+            lines.pop(0)
+            line = lines.pop(0)
+            dev, total, used, free = line.split()[:4]
+            if dev == 'none':
+                dev = ''
+            total = int(total) * 1024
+            used = int(used) * 1024
+            free = int(free) * 1024
+            return dev, total, used, free
+
+        for part in psutil.disk_partitions(all=False):
+            usage = psutil.disk_usage(part.mountpoint)
+            dev, total, used, free = df(part.mountpoint)
+            self.assertEqual(part.device, dev)
+            self.assertEqual(usage.total, total)
+            # 10 MB tollerance
+            if abs(usage.free - free) > 10 * 1024 * 1024:
+                self.fail("psutil=%s, df=%s" % (usage.free, free))
+            if abs(usage.used - used) > 10 * 1024 * 1024:
+                self.fail("psutil=%s, df=%s" % (usage.used, used))
+
+    @unittest.skipIf(not which('sysctl'), "sysctl cmd not available")
+    def test_cpu_count_logical(self):
+        syst = sysctl("hw.ncpu")
+        self.assertEqual(psutil.cpu_count(logical=True), syst)
+
+    @unittest.skipIf(not which('sysctl'), "sysctl cmd not available")
+    def test_virtual_memory_total(self):
+        num = sysctl('hw.physmem')
+        self.assertEqual(num, psutil.virtual_memory().total)
+
+    def test_net_if_stats(self):
+        for name, stats in psutil.net_if_stats().items():
+            try:
+                out = sh("ifconfig %s" % name)
+            except RuntimeError:
+                pass
+            else:
+                self.assertEqual(stats.isup, 'RUNNING' in out, msg=out)
+                if "mtu" in out:
+                    self.assertEqual(stats.mtu,
+                                     int(re.findall(r'mtu (\d+)', out)[0]))
+
+
+# =====================================================================
+# --- FreeBSD
+# =====================================================================
+
+
+@unittest.skipIf(not FREEBSD, "FREEBSD only")
+class FreeBSDSpecificTestCase(unittest.TestCase):
+
+    @classmethod
+    def setUpClass(cls):
+        cls.pid = get_test_subprocess().pid
+
+    @classmethod
+    def tearDownClass(cls):
+        reap_children()
+
+    @staticmethod
+    def parse_swapinfo():
+        # the last line is always the total
+        output = sh("swapinfo -k").splitlines()[-1]
+        parts = re.split(r'\s+', output)
+
+        if not parts:
+            raise ValueError("Can't parse swapinfo: %s" % output)
+
+        # the size is in 1k units, so multiply by 1024
+        total, used, free = (int(p) * 1024 for p in parts[1:4])
+        return total, used, free
+
+    @retry_before_failing()
+    def test_proc_memory_maps(self):
+        out = sh('procstat -v %s' % self.pid)
+        maps = psutil.Process(self.pid).memory_maps(grouped=False)
+        lines = out.split('\n')[1:]
+        while lines:
+            line = lines.pop()
+            fields = line.split()
+            _, start, stop, perms, res = fields[:5]
+            map = maps.pop()
+            self.assertEqual("%s-%s" % (start, stop), map.addr)
+            self.assertEqual(int(res), map.rss)
+            if not map.path.startswith('['):
+                self.assertEqual(fields[10], map.path)
+
+    def test_proc_exe(self):
+        out = sh('procstat -b %s' % self.pid)
+        self.assertEqual(psutil.Process(self.pid).exe(),
+                         out.split('\n')[1].split()[-1])
+
+    def test_proc_cmdline(self):
+        out = sh('procstat -c %s' % self.pid)
+        self.assertEqual(' '.join(psutil.Process(self.pid).cmdline()),
+                         ' '.join(out.split('\n')[1].split()[2:]))
+
+    def test_proc_uids_gids(self):
+        out = sh('procstat -s %s' % self.pid)
+        euid, ruid, suid, egid, rgid, sgid = out.split('\n')[1].split()[2:8]
+        p = psutil.Process(self.pid)
+        uids = p.uids()
+        gids = p.gids()
+        self.assertEqual(uids.real, int(ruid))
+        self.assertEqual(uids.effective, int(euid))
+        self.assertEqual(uids.saved, int(suid))
+        self.assertEqual(gids.real, int(rgid))
+        self.assertEqual(gids.effective, int(egid))
+        self.assertEqual(gids.saved, int(sgid))
+
+    @retry_before_failing()
+    def test_proc_ctx_switches(self):
+        tested = []
+        out = sh('procstat -r %s' % self.pid)
+        p = psutil.Process(self.pid)
+        for line in out.split('\n'):
+            line = line.lower().strip()
+            if ' voluntary context' in line:
+                pstat_value = int(line.split()[-1])
+                psutil_value = p.num_ctx_switches().voluntary
+                self.assertEqual(pstat_value, psutil_value)
+                tested.append(None)
+            elif ' involuntary context' in line:
+                pstat_value = int(line.split()[-1])
+                psutil_value = p.num_ctx_switches().involuntary
+                self.assertEqual(pstat_value, psutil_value)
+                tested.append(None)
+        if len(tested) != 2:
+            raise RuntimeError("couldn't find lines match in procstat out")
+
+    @retry_before_failing()
+    def test_proc_cpu_times(self):
+        tested = []
+        out = sh('procstat -r %s' % self.pid)
+        p = psutil.Process(self.pid)
+        for line in out.split('\n'):
+            line = line.lower().strip()
+            if 'user time' in line:
+                pstat_value = float('0.' + line.split()[-1].split('.')[-1])
+                psutil_value = p.cpu_times().user
+                self.assertEqual(pstat_value, psutil_value)
+                tested.append(None)
+            elif 'system time' in line:
+                pstat_value = float('0.' + line.split()[-1].split('.')[-1])
+                psutil_value = p.cpu_times().system
+                self.assertEqual(pstat_value, psutil_value)
+                tested.append(None)
+        if len(tested) != 2:
+            raise RuntimeError("couldn't find lines match in procstat out")
+
+    def test_cpu_frequency_against_sysctl(self):
+        # Currently only cpu 0 is frequency is supported in FreeBSD
+        # All other cores use the same frequency.
+        sensor = "dev.cpu.0.freq"
+        sysctl_result = int(sysctl(sensor))
+        self.assertEqual(psutil.cpu_freq().current, sysctl_result)
+
+        sensor = "dev.cpu.0.freq_levels"
+        sysctl_result = sysctl(sensor)
+        # sysctl returns a string of the format:
+        # <freq_level_1>/<voltage_level_1> <freq_level_2>/<voltage_level_2>...
+        # Ordered highest available to lowest available.
+        max_freq = int(sysctl_result.split()[0].split("/")[0])
+        min_freq = int(sysctl_result.split()[-1].split("/")[0])
+        self.assertEqual(psutil.cpu_freq().max, max_freq)
+        self.assertEqual(psutil.cpu_freq().min, min_freq)
+
+    # --- virtual_memory(); tests against sysctl
+
+    @retry_before_failing()
+    def test_vmem_active(self):
+        syst = sysctl("vm.stats.vm.v_active_count") * PAGESIZE
+        self.assertAlmostEqual(psutil.virtual_memory().active, syst,
+                               delta=MEMORY_TOLERANCE)
+
+    @retry_before_failing()
+    def test_vmem_inactive(self):
+        syst = sysctl("vm.stats.vm.v_inactive_count") * PAGESIZE
+        self.assertAlmostEqual(psutil.virtual_memory().inactive, syst,
+                               delta=MEMORY_TOLERANCE)
+
+    @retry_before_failing()
+    def test_vmem_wired(self):
+        syst = sysctl("vm.stats.vm.v_wire_count") * PAGESIZE
+        self.assertAlmostEqual(psutil.virtual_memory().wired, syst,
+                               delta=MEMORY_TOLERANCE)
+
+    @retry_before_failing()
+    def test_vmem_cached(self):
+        syst = sysctl("vm.stats.vm.v_cache_count") * PAGESIZE
+        self.assertAlmostEqual(psutil.virtual_memory().cached, syst,
+                               delta=MEMORY_TOLERANCE)
+
+    @retry_before_failing()
+    def test_vmem_free(self):
+        syst = sysctl("vm.stats.vm.v_free_count") * PAGESIZE
+        self.assertAlmostEqual(psutil.virtual_memory().free, syst,
+                               delta=MEMORY_TOLERANCE)
+
+    @retry_before_failing()
+    def test_vmem_buffers(self):
+        syst = sysctl("vfs.bufspace")
+        self.assertAlmostEqual(psutil.virtual_memory().buffers, syst,
+                               delta=MEMORY_TOLERANCE)
+
+    # --- virtual_memory(); tests against muse
+
+    @unittest.skipIf(not MUSE_AVAILABLE, "muse not installed")
+    def test_muse_vmem_total(self):
+        num = muse('Total')
+        self.assertEqual(psutil.virtual_memory().total, num)
+
+    @unittest.skipIf(not MUSE_AVAILABLE, "muse not installed")
+    @retry_before_failing()
+    def test_muse_vmem_active(self):
+        num = muse('Active')
+        self.assertAlmostEqual(psutil.virtual_memory().active, num,
+                               delta=MEMORY_TOLERANCE)
+
+    @unittest.skipIf(not MUSE_AVAILABLE, "muse not installed")
+    @retry_before_failing()
+    def test_muse_vmem_inactive(self):
+        num = muse('Inactive')
+        self.assertAlmostEqual(psutil.virtual_memory().inactive, num,
+                               delta=MEMORY_TOLERANCE)
+
+    @unittest.skipIf(not MUSE_AVAILABLE, "muse not installed")
+    @retry_before_failing()
+    def test_muse_vmem_wired(self):
+        num = muse('Wired')
+        self.assertAlmostEqual(psutil.virtual_memory().wired, num,
+                               delta=MEMORY_TOLERANCE)
+
+    @unittest.skipIf(not MUSE_AVAILABLE, "muse not installed")
+    @retry_before_failing()
+    def test_muse_vmem_cached(self):
+        num = muse('Cache')
+        self.assertAlmostEqual(psutil.virtual_memory().cached, num,
+                               delta=MEMORY_TOLERANCE)
+
+    @unittest.skipIf(not MUSE_AVAILABLE, "muse not installed")
+    @retry_before_failing()
+    def test_muse_vmem_free(self):
+        num = muse('Free')
+        self.assertAlmostEqual(psutil.virtual_memory().free, num,
+                               delta=MEMORY_TOLERANCE)
+
+    @unittest.skipIf(not MUSE_AVAILABLE, "muse not installed")
+    @retry_before_failing()
+    def test_muse_vmem_buffers(self):
+        num = muse('Buffer')
+        self.assertAlmostEqual(psutil.virtual_memory().buffers, num,
+                               delta=MEMORY_TOLERANCE)
+
+    def test_cpu_stats_ctx_switches(self):
+        self.assertAlmostEqual(psutil.cpu_stats().ctx_switches,
+                               sysctl('vm.stats.sys.v_swtch'), delta=1000)
+
+    def test_cpu_stats_interrupts(self):
+        self.assertAlmostEqual(psutil.cpu_stats().interrupts,
+                               sysctl('vm.stats.sys.v_intr'), delta=1000)
+
+    def test_cpu_stats_soft_interrupts(self):
+        self.assertAlmostEqual(psutil.cpu_stats().soft_interrupts,
+                               sysctl('vm.stats.sys.v_soft'), delta=1000)
+
+    def test_cpu_stats_syscalls(self):
+        self.assertAlmostEqual(psutil.cpu_stats().syscalls,
+                               sysctl('vm.stats.sys.v_syscall'), delta=1000)
+
+    # def test_cpu_stats_traps(self):
+    #    self.assertAlmostEqual(psutil.cpu_stats().traps,
+    #                           sysctl('vm.stats.sys.v_trap'), delta=1000)
+
+    # --- swap memory
+
+    def test_swapmem_free(self):
+        total, used, free = self.parse_swapinfo()
+        self.assertAlmostEqual(
+            psutil.swap_memory().free, free, delta=MEMORY_TOLERANCE)
+
+    def test_swapmem_used(self):
+        total, used, free = self.parse_swapinfo()
+        self.assertAlmostEqual(
+            psutil.swap_memory().used, used, delta=MEMORY_TOLERANCE)
+
+    def test_swapmem_total(self):
+        total, used, free = self.parse_swapinfo()
+        self.assertAlmostEqual(
+            psutil.swap_memory().total, total, delta=MEMORY_TOLERANCE)
+
+    # --- others
+
+    def test_boot_time(self):
+        s = sysctl('sysctl kern.boottime')
+        s = s[s.find(" sec = ") + 7:]
+        s = s[:s.find(',')]
+        btime = int(s)
+        self.assertEqual(btime, psutil.boot_time())
+
+    # --- sensors_battery
+
+    @unittest.skipIf(not HAS_BATTERY, "no battery")
+    def test_sensors_battery(self):
+        def secs2hours(secs):
+            m, s = divmod(secs, 60)
+            h, m = divmod(m, 60)
+            return "%d:%02d" % (h, m)
+
+        out = sh("acpiconf -i 0")
+        fields = dict([(x.split('\t')[0], x.split('\t')[-1])
+                       for x in out.split("\n")])
+        metrics = psutil.sensors_battery()
+        percent = int(fields['Remaining capacity:'].replace('%', ''))
+        remaining_time = fields['Remaining time:']
+        self.assertEqual(metrics.percent, percent)
+        if remaining_time == 'unknown':
+            self.assertEqual(metrics.secsleft, psutil.POWER_TIME_UNLIMITED)
+        else:
+            self.assertEqual(secs2hours(metrics.secsleft), remaining_time)
+
+    @unittest.skipIf(not HAS_BATTERY, "no battery")
+    def test_sensors_battery_against_sysctl(self):
+        self.assertEqual(psutil.sensors_battery().percent,
+                         sysctl("hw.acpi.battery.life"))
+        self.assertEqual(psutil.sensors_battery().power_plugged,
+                         sysctl("hw.acpi.acline") == 1)
+        secsleft = psutil.sensors_battery().secsleft
+        if secsleft < 0:
+            self.assertEqual(sysctl("hw.acpi.battery.time"), -1)
+        else:
+            self.assertEqual(secsleft, sysctl("hw.acpi.battery.time") * 60)
+
+    @unittest.skipIf(HAS_BATTERY, "has battery")
+    def test_sensors_battery_no_battery(self):
+        # If no battery is present one of these calls is supposed
+        # to fail, see:
+        # https://github.com/giampaolo/psutil/issues/1074
+        with self.assertRaises(RuntimeError):
+            sysctl("hw.acpi.battery.life")
+            sysctl("hw.acpi.battery.time")
+            sysctl("hw.acpi.acline")
+        self.assertIsNone(psutil.sensors_battery())
+
+    # --- sensors_temperatures
+
+    def test_sensors_temperatures_against_sysctl(self):
+        num_cpus = psutil.cpu_count(True)
+        for cpu in range(num_cpus):
+            sensor = "dev.cpu.%s.temperature" % cpu
+            # sysctl returns a string in the format 46.0C
+            sysctl_result = int(float(sysctl(sensor)[:-1]))
+            self.assertAlmostEqual(
+                psutil.sensors_temperatures()["coretemp"][cpu].current,
+                sysctl_result, delta=10)
+
+            sensor = "dev.cpu.%s.coretemp.tjmax" % cpu
+            sysctl_result = int(float(sysctl(sensor)[:-1]))
+            self.assertEqual(
+                psutil.sensors_temperatures()["coretemp"][cpu].high,
+                sysctl_result)
+
+# =====================================================================
+# --- OpenBSD
+# =====================================================================
+
+
+@unittest.skipIf(not OPENBSD, "OPENBSD only")
+class OpenBSDSpecificTestCase(unittest.TestCase):
+
+    def test_boot_time(self):
+        s = sysctl('kern.boottime')
+        sys_bt = datetime.datetime.strptime(s, "%a %b %d %H:%M:%S %Y")
+        psutil_bt = datetime.datetime.fromtimestamp(psutil.boot_time())
+        self.assertEqual(sys_bt, psutil_bt)
+
+
+# =====================================================================
+# --- NetBSD
+# =====================================================================
+
+
+@unittest.skipIf(not NETBSD, "NETBSD only")
+class NetBSDSpecificTestCase(unittest.TestCase):
+
+    @staticmethod
+    def parse_meminfo(look_for):
+        with open('/proc/meminfo', 'rb') as f:
+            for line in f:
+                if line.startswith(look_for):
+                    return int(line.split()[1]) * 1024
+        raise ValueError("can't find %s" % look_for)
+
+    def test_vmem_total(self):
+        self.assertEqual(
+            psutil.virtual_memory().total, self.parse_meminfo("MemTotal:"))
+
+    def test_vmem_free(self):
+        self.assertAlmostEqual(
+            psutil.virtual_memory().free, self.parse_meminfo("MemFree:"),
+            delta=MEMORY_TOLERANCE)
+
+    def test_vmem_buffers(self):
+        self.assertAlmostEqual(
+            psutil.virtual_memory().buffers, self.parse_meminfo("Buffers:"),
+            delta=MEMORY_TOLERANCE)
+
+    def test_vmem_shared(self):
+        self.assertAlmostEqual(
+            psutil.virtual_memory().shared, self.parse_meminfo("MemShared:"),
+            delta=MEMORY_TOLERANCE)
+
+    def test_swapmem_total(self):
+        self.assertAlmostEqual(
+            psutil.swap_memory().total, self.parse_meminfo("SwapTotal:"),
+            delta=MEMORY_TOLERANCE)
+
+    def test_swapmem_free(self):
+        self.assertAlmostEqual(
+            psutil.swap_memory().free, self.parse_meminfo("SwapFree:"),
+            delta=MEMORY_TOLERANCE)
+
+    def test_swapmem_used(self):
+        smem = psutil.swap_memory()
+        self.assertEqual(smem.used, smem.total - smem.free)
+
+    def test_cpu_stats_interrupts(self):
+        with open('/proc/stat', 'rb') as f:
+            for line in f:
+                if line.startswith(b'intr'):
+                    interrupts = int(line.split()[1])
+                    break
+            else:
+                raise ValueError("couldn't find line")
+        self.assertAlmostEqual(
+            psutil.cpu_stats().interrupts, interrupts, delta=1000)
+
+    def test_cpu_stats_ctx_switches(self):
+        with open('/proc/stat', 'rb') as f:
+            for line in f:
+                if line.startswith(b'ctxt'):
+                    ctx_switches = int(line.split()[1])
+                    break
+            else:
+                raise ValueError("couldn't find line")
+        self.assertAlmostEqual(
+            psutil.cpu_stats().ctx_switches, ctx_switches, delta=1000)
+
+
+if __name__ == '__main__':
+    run_test_module_by_name(__file__)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_connections.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_connections.py
new file mode 100644
index 00000000..c97fc409
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_connections.py
@@ -0,0 +1,526 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Tests for net_connections() and Process.connections() APIs."""
+
+import os
+import socket
+import textwrap
+from contextlib import closing
+from socket import AF_INET
+from socket import AF_INET6
+from socket import SOCK_DGRAM
+from socket import SOCK_STREAM
+
+import psutil
+from psutil import FREEBSD
+from psutil import LINUX
+from psutil import MACOS
+from psutil import NETBSD
+from psutil import OPENBSD
+from psutil import POSIX
+from psutil import SUNOS
+from psutil import WINDOWS
+from psutil._common import supports_ipv6
+from psutil._compat import PY3
+from psutil.tests import AF_UNIX
+from psutil.tests import bind_socket
+from psutil.tests import bind_unix_socket
+from psutil.tests import check_connection_ntuple
+from psutil.tests import create_sockets
+from psutil.tests import get_free_port
+from psutil.tests import HAS_CONNECTIONS_UNIX
+from psutil.tests import pyrun
+from psutil.tests import reap_children
+from psutil.tests import run_test_module_by_name
+from psutil.tests import safe_rmpath
+from psutil.tests import skip_on_access_denied
+from psutil.tests import tcp_socketpair
+from psutil.tests import TESTFN
+from psutil.tests import TRAVIS
+from psutil.tests import unittest
+from psutil.tests import unix_socket_path
+from psutil.tests import unix_socketpair
+from psutil.tests import wait_for_file
+
+
+thisproc = psutil.Process()
+
+
+class Base(object):
+
+    def setUp(self):
+        safe_rmpath(TESTFN)
+        if not NETBSD:
+            # NetBSD opens a UNIX socket to /var/log/run.
+            cons = thisproc.connections(kind='all')
+            assert not cons, cons
+
+    def tearDown(self):
+        safe_rmpath(TESTFN)
+        reap_children()
+        if not NETBSD:
+            # Make sure we closed all resources.
+            # NetBSD opens a UNIX socket to /var/log/run.
+            cons = thisproc.connections(kind='all')
+            assert not cons, cons
+
+    def get_conn_from_sock(self, sock):
+        cons = thisproc.connections(kind='all')
+        smap = dict([(c.fd, c) for c in cons])
+        if NETBSD:
+            # NetBSD opens a UNIX socket to /var/log/run
+            # so there may be more connections.
+            return smap[sock.fileno()]
+        else:
+            self.assertEqual(len(cons), 1)
+            if cons[0].fd != -1:
+                self.assertEqual(smap[sock.fileno()].fd, sock.fileno())
+            return cons[0]
+
+    def check_socket(self, sock, conn=None):
+        """Given a socket, makes sure it matches the one obtained
+        via psutil. It assumes this process created one connection
+        only (the one supposed to be checked).
+        """
+        if conn is None:
+            conn = self.get_conn_from_sock(sock)
+        check_connection_ntuple(conn)
+
+        # fd, family, type
+        if conn.fd != -1:
+            self.assertEqual(conn.fd, sock.fileno())
+        self.assertEqual(conn.family, sock.family)
+        # see: http://bugs.python.org/issue30204
+        self.assertEqual(
+            conn.type, sock.getsockopt(socket.SOL_SOCKET, socket.SO_TYPE))
+
+        # local address
+        laddr = sock.getsockname()
+        if not laddr and PY3 and isinstance(laddr, bytes):
+            # See: http://bugs.python.org/issue30205
+            laddr = laddr.decode()
+        if sock.family == AF_INET6:
+            laddr = laddr[:2]
+        if sock.family == AF_UNIX and OPENBSD:
+            # No addresses are set for UNIX sockets on OpenBSD.
+            pass
+        else:
+            self.assertEqual(conn.laddr, laddr)
+
+        # XXX Solaris can't retrieve system-wide UNIX sockets
+        if sock.family == AF_UNIX and HAS_CONNECTIONS_UNIX:
+            cons = thisproc.connections(kind='all')
+            self.compare_procsys_connections(os.getpid(), cons)
+        return conn
+
+    def compare_procsys_connections(self, pid, proc_cons, kind='all'):
+        """Given a process PID and its list of connections compare
+        those against system-wide connections retrieved via
+        psutil.net_connections.
+        """
+        try:
+            sys_cons = psutil.net_connections(kind=kind)
+        except psutil.AccessDenied:
+            # On MACOS, system-wide connections are retrieved by iterating
+            # over all processes
+            if MACOS:
+                return
+            else:
+                raise
+        # Filter for this proc PID and exlucde PIDs from the tuple.
+        sys_cons = [c[:-1] for c in sys_cons if c.pid == pid]
+        sys_cons.sort()
+        proc_cons.sort()
+        self.assertEqual(proc_cons, sys_cons)
+
+
+# =====================================================================
+# --- Test unconnected sockets
+# =====================================================================
+
+
+class TestUnconnectedSockets(Base, unittest.TestCase):
+    """Tests sockets which are open but not connected to anything."""
+
+    def test_tcp_v4(self):
+        addr = ("127.0.0.1", get_free_port())
+        with closing(bind_socket(AF_INET, SOCK_STREAM, addr=addr)) as sock:
+            conn = self.check_socket(sock)
+            assert not conn.raddr
+            self.assertEqual(conn.status, psutil.CONN_LISTEN)
+
+    @unittest.skipIf(not supports_ipv6(), "IPv6 not supported")
+    def test_tcp_v6(self):
+        addr = ("::1", get_free_port())
+        with closing(bind_socket(AF_INET6, SOCK_STREAM, addr=addr)) as sock:
+            conn = self.check_socket(sock)
+            assert not conn.raddr
+            self.assertEqual(conn.status, psutil.CONN_LISTEN)
+
+    def test_udp_v4(self):
+        addr = ("127.0.0.1", get_free_port())
+        with closing(bind_socket(AF_INET, SOCK_DGRAM, addr=addr)) as sock:
+            conn = self.check_socket(sock)
+            assert not conn.raddr
+            self.assertEqual(conn.status, psutil.CONN_NONE)
+
+    @unittest.skipIf(not supports_ipv6(), "IPv6 not supported")
+    def test_udp_v6(self):
+        addr = ("::1", get_free_port())
+        with closing(bind_socket(AF_INET6, SOCK_DGRAM, addr=addr)) as sock:
+            conn = self.check_socket(sock)
+            assert not conn.raddr
+            self.assertEqual(conn.status, psutil.CONN_NONE)
+
+    @unittest.skipIf(not POSIX, 'POSIX only')
+    def test_unix_tcp(self):
+        with unix_socket_path() as name:
+            with closing(bind_unix_socket(name, type=SOCK_STREAM)) as sock:
+                conn = self.check_socket(sock)
+                assert not conn.raddr
+                self.assertEqual(conn.status, psutil.CONN_NONE)
+
+    @unittest.skipIf(not POSIX, 'POSIX only')
+    def test_unix_udp(self):
+        with unix_socket_path() as name:
+            with closing(bind_unix_socket(name, type=SOCK_STREAM)) as sock:
+                conn = self.check_socket(sock)
+                assert not conn.raddr
+                self.assertEqual(conn.status, psutil.CONN_NONE)
+
+
+# =====================================================================
+# --- Test connected sockets
+# =====================================================================
+
+
+class TestConnectedSocketPairs(Base, unittest.TestCase):
+    """Test socket pairs which are are actually connected to
+    each other.
+    """
+
+    # On SunOS, even after we close() it, the server socket stays around
+    # in TIME_WAIT state.
+    @unittest.skipIf(SUNOS, "unreliable on SUONS")
+    def test_tcp(self):
+        addr = ("127.0.0.1", get_free_port())
+        assert not thisproc.connections(kind='tcp4')
+        server, client = tcp_socketpair(AF_INET, addr=addr)
+        try:
+            cons = thisproc.connections(kind='tcp4')
+            self.assertEqual(len(cons), 2)
+            self.assertEqual(cons[0].status, psutil.CONN_ESTABLISHED)
+            self.assertEqual(cons[1].status, psutil.CONN_ESTABLISHED)
+            # May not be fast enough to change state so it stays
+            # commenteed.
+            # client.close()
+            # cons = thisproc.connections(kind='all')
+            # self.assertEqual(len(cons), 1)
+            # self.assertEqual(cons[0].status, psutil.CONN_CLOSE_WAIT)
+        finally:
+            server.close()
+            client.close()
+
+    @unittest.skipIf(not POSIX, 'POSIX only')
+    def test_unix(self):
+        with unix_socket_path() as name:
+            server, client = unix_socketpair(name)
+            try:
+                cons = thisproc.connections(kind='unix')
+                assert not (cons[0].laddr and cons[0].raddr)
+                assert not (cons[1].laddr and cons[1].raddr)
+                if NETBSD:
+                    # On NetBSD creating a UNIX socket will cause
+                    # a UNIX connection to  /var/run/log.
+                    cons = [c for c in cons if c.raddr != '/var/run/log']
+                self.assertEqual(len(cons), 2)
+                if LINUX or FREEBSD or SUNOS:
+                    # remote path is never set
+                    self.assertEqual(cons[0].raddr, "")
+                    self.assertEqual(cons[1].raddr, "")
+                    # one local address should though
+                    self.assertEqual(name, cons[0].laddr or cons[1].laddr)
+                elif OPENBSD:
+                    # No addresses whatsoever here.
+                    for addr in (cons[0].laddr, cons[0].raddr,
+                                 cons[1].laddr, cons[1].raddr):
+                        self.assertEqual(addr, "")
+                else:
+                    # On other systems either the laddr or raddr
+                    # of both peers are set.
+                    self.assertEqual(cons[0].laddr or cons[1].laddr, name)
+                    self.assertEqual(cons[0].raddr or cons[1].raddr, name)
+            finally:
+                server.close()
+                client.close()
+
+    @skip_on_access_denied(only_if=MACOS)
+    def test_combos(self):
+        def check_conn(proc, conn, family, type, laddr, raddr, status, kinds):
+            all_kinds = ("all", "inet", "inet4", "inet6", "tcp", "tcp4",
+                         "tcp6", "udp", "udp4", "udp6")
+            check_connection_ntuple(conn)
+            self.assertEqual(conn.family, family)
+            self.assertEqual(conn.type, type)
+            self.assertEqual(conn.laddr, laddr)
+            self.assertEqual(conn.raddr, raddr)
+            self.assertEqual(conn.status, status)
+            for kind in all_kinds:
+                cons = proc.connections(kind=kind)
+                if kind in kinds:
+                    assert cons
+                else:
+                    assert not cons, cons
+            # compare against system-wide connections
+            # XXX Solaris can't retrieve system-wide UNIX
+            # sockets.
+            if HAS_CONNECTIONS_UNIX:
+                self.compare_procsys_connections(proc.pid, [conn])
+
+        tcp_template = textwrap.dedent("""
+            import socket, time
+            s = socket.socket($family, socket.SOCK_STREAM)
+            s.bind(('$addr', 0))
+            s.listen(1)
+            with open('$testfn', 'w') as f:
+                f.write(str(s.getsockname()[:2]))
+            time.sleep(60)
+        """)
+
+        udp_template = textwrap.dedent("""
+            import socket, time
+            s = socket.socket($family, socket.SOCK_DGRAM)
+            s.bind(('$addr', 0))
+            with open('$testfn', 'w') as f:
+                f.write(str(s.getsockname()[:2]))
+            time.sleep(60)
+        """)
+
+        from string import Template
+        testfile = os.path.basename(TESTFN)
+        tcp4_template = Template(tcp_template).substitute(
+            family=int(AF_INET), addr="127.0.0.1", testfn=testfile)
+        udp4_template = Template(udp_template).substitute(
+            family=int(AF_INET), addr="127.0.0.1", testfn=testfile)
+        tcp6_template = Template(tcp_template).substitute(
+            family=int(AF_INET6), addr="::1", testfn=testfile)
+        udp6_template = Template(udp_template).substitute(
+            family=int(AF_INET6), addr="::1", testfn=testfile)
+
+        # launch various subprocess instantiating a socket of various
+        # families and types to enrich psutil results
+        tcp4_proc = pyrun(tcp4_template)
+        tcp4_addr = eval(wait_for_file(testfile))
+        udp4_proc = pyrun(udp4_template)
+        udp4_addr = eval(wait_for_file(testfile))
+        if supports_ipv6():
+            tcp6_proc = pyrun(tcp6_template)
+            tcp6_addr = eval(wait_for_file(testfile))
+            udp6_proc = pyrun(udp6_template)
+            udp6_addr = eval(wait_for_file(testfile))
+        else:
+            tcp6_proc = None
+            udp6_proc = None
+            tcp6_addr = None
+            udp6_addr = None
+
+        for p in thisproc.children():
+            cons = p.connections()
+            self.assertEqual(len(cons), 1)
+            for conn in cons:
+                # TCP v4
+                if p.pid == tcp4_proc.pid:
+                    check_conn(p, conn, AF_INET, SOCK_STREAM, tcp4_addr, (),
+                               psutil.CONN_LISTEN,
+                               ("all", "inet", "inet4", "tcp", "tcp4"))
+                # UDP v4
+                elif p.pid == udp4_proc.pid:
+                    check_conn(p, conn, AF_INET, SOCK_DGRAM, udp4_addr, (),
+                               psutil.CONN_NONE,
+                               ("all", "inet", "inet4", "udp", "udp4"))
+                # TCP v6
+                elif p.pid == getattr(tcp6_proc, "pid", None):
+                    check_conn(p, conn, AF_INET6, SOCK_STREAM, tcp6_addr, (),
+                               psutil.CONN_LISTEN,
+                               ("all", "inet", "inet6", "tcp", "tcp6"))
+                # UDP v6
+                elif p.pid == getattr(udp6_proc, "pid", None):
+                    check_conn(p, conn, AF_INET6, SOCK_DGRAM, udp6_addr, (),
+                               psutil.CONN_NONE,
+                               ("all", "inet", "inet6", "udp", "udp6"))
+
+        # err
+        self.assertRaises(ValueError, p.connections, kind='???')
+
+    def test_multi_sockets_filtering(self):
+        with create_sockets() as socks:
+            cons = thisproc.connections(kind='all')
+            self.assertEqual(len(cons), len(socks))
+            # tcp
+            cons = thisproc.connections(kind='tcp')
+            self.assertEqual(len(cons), 2 if supports_ipv6() else 1)
+            for conn in cons:
+                self.assertIn(conn.family, (AF_INET, AF_INET6))
+                self.assertEqual(conn.type, SOCK_STREAM)
+            # tcp4
+            cons = thisproc.connections(kind='tcp4')
+            self.assertEqual(len(cons), 1)
+            self.assertEqual(cons[0].family, AF_INET)
+            self.assertEqual(cons[0].type, SOCK_STREAM)
+            # tcp6
+            if supports_ipv6():
+                cons = thisproc.connections(kind='tcp6')
+                self.assertEqual(len(cons), 1)
+                self.assertEqual(cons[0].family, AF_INET6)
+                self.assertEqual(cons[0].type, SOCK_STREAM)
+            # udp
+            cons = thisproc.connections(kind='udp')
+            self.assertEqual(len(cons), 2 if supports_ipv6() else 1)
+            for conn in cons:
+                self.assertIn(conn.family, (AF_INET, AF_INET6))
+                self.assertEqual(conn.type, SOCK_DGRAM)
+            # udp4
+            cons = thisproc.connections(kind='udp4')
+            self.assertEqual(len(cons), 1)
+            self.assertEqual(cons[0].family, AF_INET)
+            self.assertEqual(cons[0].type, SOCK_DGRAM)
+            # udp6
+            if supports_ipv6():
+                cons = thisproc.connections(kind='udp6')
+                self.assertEqual(len(cons), 1)
+                self.assertEqual(cons[0].family, AF_INET6)
+                self.assertEqual(cons[0].type, SOCK_DGRAM)
+            # inet
+            cons = thisproc.connections(kind='inet')
+            self.assertEqual(len(cons), 4 if supports_ipv6() else 2)
+            for conn in cons:
+                self.assertIn(conn.family, (AF_INET, AF_INET6))
+                self.assertIn(conn.type, (SOCK_STREAM, SOCK_DGRAM))
+            # inet6
+            if supports_ipv6():
+                cons = thisproc.connections(kind='inet6')
+                self.assertEqual(len(cons), 2)
+                for conn in cons:
+                    self.assertEqual(conn.family, AF_INET6)
+                    self.assertIn(conn.type, (SOCK_STREAM, SOCK_DGRAM))
+            # unix
+            if HAS_CONNECTIONS_UNIX:
+                cons = thisproc.connections(kind='unix')
+                self.assertEqual(len(cons), 3)
+                for conn in cons:
+                    self.assertEqual(conn.family, AF_UNIX)
+                    self.assertIn(conn.type, (SOCK_STREAM, SOCK_DGRAM))
+
+
+# =====================================================================
+# --- Miscellaneous tests
+# =====================================================================
+
+
+class TestSystemWideConnections(Base, unittest.TestCase):
+    """Tests for net_connections()."""
+
+    @skip_on_access_denied()
+    def test_it(self):
+        def check(cons, families, types_):
+            AF_UNIX = getattr(socket, 'AF_UNIX', object())
+            for conn in cons:
+                self.assertIn(conn.family, families, msg=conn)
+                if conn.family != AF_UNIX:
+                    self.assertIn(conn.type, types_, msg=conn)
+                check_connection_ntuple(conn)
+
+        with create_sockets():
+            from psutil._common import conn_tmap
+            for kind, groups in conn_tmap.items():
+                # XXX: SunOS does not retrieve UNIX sockets.
+                if kind == 'unix' and not HAS_CONNECTIONS_UNIX:
+                    continue
+                families, types_ = groups
+                cons = psutil.net_connections(kind)
+                self.assertEqual(len(cons), len(set(cons)))
+                check(cons, families, types_)
+
+            self.assertRaises(ValueError, psutil.net_connections, kind='???')
+
+    @skip_on_access_denied()
+    def test_multi_socks(self):
+        with create_sockets() as socks:
+            cons = [x for x in psutil.net_connections(kind='all')
+                    if x.pid == os.getpid()]
+            self.assertEqual(len(cons), len(socks))
+
+    @skip_on_access_denied()
+    # See: https://travis-ci.org/giampaolo/psutil/jobs/237566297
+    @unittest.skipIf(MACOS and TRAVIS, "unreliable on MACOS + TRAVIS")
+    def test_multi_sockets_procs(self):
+        # Creates multiple sub processes, each creating different
+        # sockets. For each process check that proc.connections()
+        # and net_connections() return the same results.
+        # This is done mainly to check whether net_connections()'s
+        # pid is properly set, see:
+        # https://github.com/giampaolo/psutil/issues/1013
+        with create_sockets() as socks:
+            expected = len(socks)
+        pids = []
+        times = 10
+        for i in range(times):
+            fname = os.path.realpath(TESTFN) + str(i)
+            src = textwrap.dedent("""\
+                import time, os
+                from psutil.tests import create_sockets
+                with create_sockets():
+                    with open(r'%s', 'w') as f:
+                        f.write(str(os.getpid()))
+                    time.sleep(60)
+                """ % fname)
+            sproc = pyrun(src)
+            pids.append(sproc.pid)
+            self.addCleanup(safe_rmpath, fname)
+
+        # sync
+        for i in range(times):
+            fname = TESTFN + str(i)
+            wait_for_file(fname)
+
+        syscons = [x for x in psutil.net_connections(kind='all') if x.pid
+                   in pids]
+        for pid in pids:
+            self.assertEqual(len([x for x in syscons if x.pid == pid]),
+                             expected)
+            p = psutil.Process(pid)
+            self.assertEqual(len(p.connections('all')), expected)
+
+
+# =====================================================================
+# --- Miscellaneous tests
+# =====================================================================
+
+
+class TestMisc(unittest.TestCase):
+
+    def test_connection_constants(self):
+        ints = []
+        strs = []
+        for name in dir(psutil):
+            if name.startswith('CONN_'):
+                num = getattr(psutil, name)
+                str_ = str(num)
+                assert str_.isupper(), str_
+                self.assertNotIn(str, strs)
+                self.assertNotIn(num, ints)
+                ints.append(num)
+                strs.append(str_)
+        if SUNOS:
+            psutil.CONN_IDLE
+            psutil.CONN_BOUND
+        if WINDOWS:
+            psutil.CONN_DELETE_TCB
+
+
+if __name__ == '__main__':
+    run_test_module_by_name(__file__)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_contracts.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_contracts.py
new file mode 100644
index 00000000..90fa8a15
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_contracts.py
@@ -0,0 +1,657 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Contracts tests. These tests mainly check API sanity in terms of
+returned types and APIs availability.
+Some of these are duplicates of tests test_system.py and test_process.py
+"""
+
+import errno
+import os
+import stat
+import time
+import traceback
+import warnings
+from contextlib import closing
+
+from psutil import AIX
+from psutil import BSD
+from psutil import FREEBSD
+from psutil import LINUX
+from psutil import MACOS
+from psutil import NETBSD
+from psutil import OPENBSD
+from psutil import OSX
+from psutil import POSIX
+from psutil import SUNOS
+from psutil import WINDOWS
+from psutil._compat import long
+from psutil.tests import bind_unix_socket
+from psutil.tests import check_connection_ntuple
+from psutil.tests import get_kernel_version
+from psutil.tests import HAS_CONNECTIONS_UNIX
+from psutil.tests import HAS_NET_IO_COUNTERS
+from psutil.tests import HAS_RLIMIT
+from psutil.tests import HAS_SENSORS_FANS
+from psutil.tests import HAS_SENSORS_TEMPERATURES
+from psutil.tests import is_namedtuple
+from psutil.tests import run_test_module_by_name
+from psutil.tests import safe_rmpath
+from psutil.tests import skip_on_access_denied
+from psutil.tests import TESTFN
+from psutil.tests import unittest
+from psutil.tests import unix_socket_path
+from psutil.tests import VALID_PROC_STATUSES
+from psutil.tests import warn
+import psutil
+
+
+# ===================================================================
+# --- APIs availability
+# ===================================================================
+
+
+class TestAvailability(unittest.TestCase):
+    """Make sure code reflects what doc promises in terms of APIs
+    availability.
+    """
+
+    def test_cpu_affinity(self):
+        hasit = LINUX or WINDOWS or FREEBSD
+        self.assertEqual(hasattr(psutil.Process, "cpu_affinity"), hasit)
+
+    def test_win_service(self):
+        self.assertEqual(hasattr(psutil, "win_service_iter"), WINDOWS)
+        self.assertEqual(hasattr(psutil, "win_service_get"), WINDOWS)
+
+    def test_PROCFS_PATH(self):
+        self.assertEqual(hasattr(psutil, "PROCFS_PATH"),
+                         LINUX or SUNOS or AIX)
+
+    def test_win_priority(self):
+        ae = self.assertEqual
+        ae(hasattr(psutil, "ABOVE_NORMAL_PRIORITY_CLASS"), WINDOWS)
+        ae(hasattr(psutil, "BELOW_NORMAL_PRIORITY_CLASS"), WINDOWS)
+        ae(hasattr(psutil, "HIGH_PRIORITY_CLASS"), WINDOWS)
+        ae(hasattr(psutil, "IDLE_PRIORITY_CLASS"), WINDOWS)
+        ae(hasattr(psutil, "NORMAL_PRIORITY_CLASS"), WINDOWS)
+        ae(hasattr(psutil, "REALTIME_PRIORITY_CLASS"), WINDOWS)
+
+    def test_linux_ioprio(self):
+        ae = self.assertEqual
+        ae(hasattr(psutil, "IOPRIO_CLASS_NONE"), LINUX)
+        ae(hasattr(psutil, "IOPRIO_CLASS_RT"), LINUX)
+        ae(hasattr(psutil, "IOPRIO_CLASS_BE"), LINUX)
+        ae(hasattr(psutil, "IOPRIO_CLASS_IDLE"), LINUX)
+
+    def test_linux_rlimit(self):
+        ae = self.assertEqual
+        hasit = LINUX and get_kernel_version() >= (2, 6, 36)
+        ae(hasattr(psutil.Process, "rlimit"), hasit)
+        ae(hasattr(psutil, "RLIM_INFINITY"), hasit)
+        ae(hasattr(psutil, "RLIMIT_AS"), hasit)
+        ae(hasattr(psutil, "RLIMIT_CORE"), hasit)
+        ae(hasattr(psutil, "RLIMIT_CPU"), hasit)
+        ae(hasattr(psutil, "RLIMIT_DATA"), hasit)
+        ae(hasattr(psutil, "RLIMIT_FSIZE"), hasit)
+        ae(hasattr(psutil, "RLIMIT_LOCKS"), hasit)
+        ae(hasattr(psutil, "RLIMIT_MEMLOCK"), hasit)
+        ae(hasattr(psutil, "RLIMIT_NOFILE"), hasit)
+        ae(hasattr(psutil, "RLIMIT_NPROC"), hasit)
+        ae(hasattr(psutil, "RLIMIT_RSS"), hasit)
+        ae(hasattr(psutil, "RLIMIT_STACK"), hasit)
+
+        hasit = LINUX and get_kernel_version() >= (3, 0)
+        ae(hasattr(psutil, "RLIMIT_MSGQUEUE"), hasit)
+        ae(hasattr(psutil, "RLIMIT_NICE"), hasit)
+        ae(hasattr(psutil, "RLIMIT_RTPRIO"), hasit)
+        ae(hasattr(psutil, "RLIMIT_RTTIME"), hasit)
+        ae(hasattr(psutil, "RLIMIT_SIGPENDING"), hasit)
+
+    def test_cpu_freq(self):
+        linux = (LINUX and
+                 (os.path.exists("/sys/devices/system/cpu/cpufreq") or
+                  os.path.exists("/sys/devices/system/cpu/cpu0/cpufreq")))
+        self.assertEqual(hasattr(psutil, "cpu_freq"),
+                         linux or MACOS or WINDOWS or FREEBSD)
+
+    def test_sensors_temperatures(self):
+        self.assertEqual(
+            hasattr(psutil, "sensors_temperatures"), LINUX or FREEBSD)
+
+    def test_sensors_fans(self):
+        self.assertEqual(hasattr(psutil, "sensors_fans"), LINUX)
+
+    def test_battery(self):
+        self.assertEqual(hasattr(psutil, "sensors_battery"),
+                         LINUX or WINDOWS or FREEBSD or MACOS)
+
+    def test_proc_environ(self):
+        self.assertEqual(hasattr(psutil.Process, "environ"),
+                         LINUX or MACOS or WINDOWS)
+
+    def test_proc_uids(self):
+        self.assertEqual(hasattr(psutil.Process, "uids"), POSIX)
+
+    def test_proc_gids(self):
+        self.assertEqual(hasattr(psutil.Process, "uids"), POSIX)
+
+    def test_proc_terminal(self):
+        self.assertEqual(hasattr(psutil.Process, "terminal"), POSIX)
+
+    def test_proc_ionice(self):
+        self.assertEqual(hasattr(psutil.Process, "ionice"), LINUX or WINDOWS)
+
+    def test_proc_rlimit(self):
+        self.assertEqual(hasattr(psutil.Process, "rlimit"), LINUX)
+
+    def test_proc_io_counters(self):
+        hasit = hasattr(psutil.Process, "io_counters")
+        self.assertEqual(hasit, False if MACOS or SUNOS else True)
+
+    def test_proc_num_fds(self):
+        self.assertEqual(hasattr(psutil.Process, "num_fds"), POSIX)
+
+    def test_proc_num_handles(self):
+        self.assertEqual(hasattr(psutil.Process, "num_handles"), WINDOWS)
+
+    def test_proc_cpu_affinity(self):
+        self.assertEqual(hasattr(psutil.Process, "cpu_affinity"),
+                         LINUX or WINDOWS or FREEBSD)
+
+    def test_proc_cpu_num(self):
+        self.assertEqual(hasattr(psutil.Process, "cpu_num"),
+                         LINUX or FREEBSD or SUNOS)
+
+    def test_proc_memory_maps(self):
+        hasit = hasattr(psutil.Process, "memory_maps")
+        self.assertEqual(
+            hasit, False if OPENBSD or NETBSD or AIX or MACOS else True)
+
+
+# ===================================================================
+# --- Test deprecations
+# ===================================================================
+
+
+class TestDeprecations(unittest.TestCase):
+
+    def test_memory_info_ex(self):
+        with warnings.catch_warnings(record=True) as ws:
+            psutil.Process().memory_info_ex()
+        w = ws[0]
+        self.assertIsInstance(w.category(), DeprecationWarning)
+        self.assertIn("memory_info_ex() is deprecated", str(w.message))
+        self.assertIn("use memory_info() instead", str(w.message))
+
+
+# ===================================================================
+# --- System API types
+# ===================================================================
+
+
+class TestSystem(unittest.TestCase):
+    """Check the return types of system related APIs.
+    Mainly we want to test we never return unicode on Python 2, see:
+    https://github.com/giampaolo/psutil/issues/1039
+    """
+
+    @classmethod
+    def setUpClass(cls):
+        cls.proc = psutil.Process()
+
+    def tearDown(self):
+        safe_rmpath(TESTFN)
+
+    def test_cpu_times(self):
+        # Duplicate of test_system.py. Keep it anyway.
+        ret = psutil.cpu_times()
+        assert is_namedtuple(ret)
+        for n in ret:
+            self.assertIsInstance(n, float)
+            self.assertGreaterEqual(n, 0)
+
+    def test_io_counters(self):
+        # Duplicate of test_system.py. Keep it anyway.
+        for k in psutil.disk_io_counters(perdisk=True):
+            self.assertIsInstance(k, str)
+
+    def test_disk_partitions(self):
+        # Duplicate of test_system.py. Keep it anyway.
+        for disk in psutil.disk_partitions():
+            self.assertIsInstance(disk.device, str)
+            self.assertIsInstance(disk.mountpoint, str)
+            self.assertIsInstance(disk.fstype, str)
+            self.assertIsInstance(disk.opts, str)
+
+    @unittest.skipIf(not POSIX, 'POSIX only')
+    @unittest.skipIf(not HAS_CONNECTIONS_UNIX, "can't list UNIX sockets")
+    @skip_on_access_denied(only_if=MACOS)
+    def test_net_connections(self):
+        with unix_socket_path() as name:
+            with closing(bind_unix_socket(name)):
+                cons = psutil.net_connections(kind='unix')
+                assert cons
+                for conn in cons:
+                    self.assertIsInstance(conn.laddr, str)
+
+    def test_net_if_addrs(self):
+        # Duplicate of test_system.py. Keep it anyway.
+        for ifname, addrs in psutil.net_if_addrs().items():
+            self.assertIsInstance(ifname, str)
+            for addr in addrs:
+                self.assertIsInstance(addr.address, str)
+                self.assertIsInstance(addr.netmask, (str, type(None)))
+                self.assertIsInstance(addr.broadcast, (str, type(None)))
+
+    def test_net_if_stats(self):
+        # Duplicate of test_system.py. Keep it anyway.
+        for ifname, _ in psutil.net_if_stats().items():
+            self.assertIsInstance(ifname, str)
+
+    @unittest.skipIf(not HAS_NET_IO_COUNTERS, 'not supported')
+    def test_net_io_counters(self):
+        # Duplicate of test_system.py. Keep it anyway.
+        for ifname, _ in psutil.net_io_counters(pernic=True).items():
+            self.assertIsInstance(ifname, str)
+
+    @unittest.skipIf(not HAS_SENSORS_FANS, "not supported")
+    def test_sensors_fans(self):
+        # Duplicate of test_system.py. Keep it anyway.
+        for name, units in psutil.sensors_fans().items():
+            self.assertIsInstance(name, str)
+            for unit in units:
+                self.assertIsInstance(unit.label, str)
+
+    @unittest.skipIf(not HAS_SENSORS_TEMPERATURES, "not supported")
+    def test_sensors_temperatures(self):
+        # Duplicate of test_system.py. Keep it anyway.
+        for name, units in psutil.sensors_temperatures().items():
+            self.assertIsInstance(name, str)
+            for unit in units:
+                self.assertIsInstance(unit.label, str)
+
+    def test_users(self):
+        # Duplicate of test_system.py. Keep it anyway.
+        for user in psutil.users():
+            self.assertIsInstance(user.name, str)
+            self.assertIsInstance(user.terminal, (str, type(None)))
+            self.assertIsInstance(user.host, (str, type(None)))
+            self.assertIsInstance(user.pid, (int, type(None)))
+
+
+# ===================================================================
+# --- Featch all processes test
+# ===================================================================
+
+
+class TestFetchAllProcesses(unittest.TestCase):
+    """Test which iterates over all running processes and performs
+    some sanity checks against Process API's returned values.
+    """
+
+    def get_attr_names(self):
+        excluded_names = set([
+            'send_signal', 'suspend', 'resume', 'terminate', 'kill', 'wait',
+            'as_dict', 'parent', 'parents', 'children', 'memory_info_ex',
+            'oneshot',
+        ])
+        if LINUX and not HAS_RLIMIT:
+            excluded_names.add('rlimit')
+        attrs = []
+        for name in dir(psutil.Process):
+            if name.startswith("_"):
+                continue
+            if name in excluded_names:
+                continue
+            attrs.append(name)
+        return attrs
+
+    def iter_procs(self):
+        attrs = self.get_attr_names()
+        for p in psutil.process_iter():
+            with p.oneshot():
+                for name in attrs:
+                    yield (p, name)
+
+    def call_meth(self, p, name):
+        args = ()
+        kwargs = {}
+        attr = getattr(p, name, None)
+        if attr is not None and callable(attr):
+            if name == 'rlimit':
+                args = (psutil.RLIMIT_NOFILE,)
+            elif name == 'memory_maps':
+                kwargs = {'grouped': False}
+            return attr(*args, **kwargs)
+        else:
+            return attr
+
+    def test_fetch_all(self):
+        valid_procs = 0
+        default = object()
+        failures = []
+        for p, name in self.iter_procs():
+            ret = default
+            try:
+                ret = self.call_meth(p, name)
+            except NotImplementedError:
+                msg = "%r was skipped because not implemented" % (
+                    self.__class__.__name__ + '.test_' + name)
+                warn(msg)
+            except (psutil.NoSuchProcess, psutil.AccessDenied) as err:
+                self.assertEqual(err.pid, p.pid)
+                if err.name:
+                    # make sure exception's name attr is set
+                    # with the actual process name
+                    self.assertEqual(err.name, p.name())
+                assert str(err)
+                assert err.msg
+            except Exception:
+                s = '\n' + '=' * 70 + '\n'
+                s += "FAIL: test_%s (proc=%s" % (name, p)
+                if ret != default:
+                    s += ", ret=%s)" % repr(ret)
+                s += ')\n'
+                s += '-' * 70
+                s += "\n%s" % traceback.format_exc()
+                s = "\n".join((" " * 4) + i for i in s.splitlines())
+                s += '\n'
+                failures.append(s)
+                break
+            else:
+                valid_procs += 1
+                if ret not in (0, 0.0, [], None, '', {}):
+                    assert ret, ret
+                meth = getattr(self, name)
+                meth(ret, p)
+
+        if failures:
+            self.fail(''.join(failures))
+
+        # we should always have a non-empty list, not including PID 0 etc.
+        # special cases.
+        assert valid_procs
+
+    def cmdline(self, ret, proc):
+        self.assertIsInstance(ret, list)
+        for part in ret:
+            self.assertIsInstance(part, str)
+
+    def exe(self, ret, proc):
+        self.assertIsInstance(ret, (str, type(None)))
+        if not ret:
+            self.assertEqual(ret, '')
+        else:
+            assert os.path.isabs(ret), ret
+            # Note: os.stat() may return False even if the file is there
+            # hence we skip the test, see:
+            # http://stackoverflow.com/questions/3112546/os-path-exists-lies
+            if POSIX and os.path.isfile(ret):
+                if hasattr(os, 'access') and hasattr(os, "X_OK"):
+                    # XXX may fail on MACOS
+                    assert os.access(ret, os.X_OK)
+
+    def pid(self, ret, proc):
+        self.assertIsInstance(ret, int)
+        self.assertGreaterEqual(ret, 0)
+
+    def ppid(self, ret, proc):
+        self.assertIsInstance(ret, (int, long))
+        self.assertGreaterEqual(ret, 0)
+
+    def name(self, ret, proc):
+        self.assertIsInstance(ret, str)
+        # on AIX, "<exiting>" processes don't have names
+        if not AIX:
+            assert ret
+
+    def create_time(self, ret, proc):
+        self.assertIsInstance(ret, float)
+        try:
+            self.assertGreaterEqual(ret, 0)
+        except AssertionError:
+            # XXX
+            if OPENBSD and proc.status() == psutil.STATUS_ZOMBIE:
+                pass
+            else:
+                raise
+        # this can't be taken for granted on all platforms
+        # self.assertGreaterEqual(ret, psutil.boot_time())
+        # make sure returned value can be pretty printed
+        # with strftime
+        time.strftime("%Y %m %d %H:%M:%S", time.localtime(ret))
+
+    def uids(self, ret, proc):
+        assert is_namedtuple(ret)
+        for uid in ret:
+            self.assertIsInstance(uid, int)
+            self.assertGreaterEqual(uid, 0)
+
+    def gids(self, ret, proc):
+        assert is_namedtuple(ret)
+        # note: testing all gids as above seems not to be reliable for
+        # gid == 30 (nodoby); not sure why.
+        for gid in ret:
+            self.assertIsInstance(gid, int)
+            if not MACOS and not NETBSD:
+                self.assertGreaterEqual(gid, 0)
+
+    def username(self, ret, proc):
+        self.assertIsInstance(ret, str)
+        assert ret
+
+    def status(self, ret, proc):
+        self.assertIsInstance(ret, str)
+        assert ret
+        self.assertNotEqual(ret, '?')  # XXX
+        self.assertIn(ret, VALID_PROC_STATUSES)
+
+    def io_counters(self, ret, proc):
+        assert is_namedtuple(ret)
+        for field in ret:
+            self.assertIsInstance(field, (int, long))
+            if field != -1:
+                self.assertGreaterEqual(field, 0)
+
+    def ionice(self, ret, proc):
+        if POSIX:
+            assert is_namedtuple(ret)
+            for field in ret:
+                self.assertIsInstance(field, int)
+        if LINUX:
+            self.assertGreaterEqual(ret.ioclass, 0)
+            self.assertGreaterEqual(ret.value, 0)
+        else:
+            self.assertGreaterEqual(ret, 0)
+            self.assertIn(ret, (0, 1, 2))
+
+    def num_threads(self, ret, proc):
+        self.assertIsInstance(ret, int)
+        self.assertGreaterEqual(ret, 1)
+
+    def threads(self, ret, proc):
+        self.assertIsInstance(ret, list)
+        for t in ret:
+            assert is_namedtuple(t)
+            self.assertGreaterEqual(t.id, 0)
+            self.assertGreaterEqual(t.user_time, 0)
+            self.assertGreaterEqual(t.system_time, 0)
+            for field in t:
+                self.assertIsInstance(field, (int, float))
+
+    def cpu_times(self, ret, proc):
+        assert is_namedtuple(ret)
+        for n in ret:
+            self.assertIsInstance(n, float)
+            self.assertGreaterEqual(n, 0)
+        # TODO: check ntuple fields
+
+    def cpu_percent(self, ret, proc):
+        self.assertIsInstance(ret, float)
+        assert 0.0 <= ret <= 100.0, ret
+
+    def cpu_num(self, ret, proc):
+        self.assertIsInstance(ret, int)
+        if FREEBSD and ret == -1:
+            return
+        self.assertGreaterEqual(ret, 0)
+        if psutil.cpu_count() == 1:
+            self.assertEqual(ret, 0)
+        self.assertIn(ret, list(range(psutil.cpu_count())))
+
+    def memory_info(self, ret, proc):
+        assert is_namedtuple(ret)
+        for value in ret:
+            self.assertIsInstance(value, (int, long))
+            self.assertGreaterEqual(value, 0)
+        if POSIX and not AIX and ret.vms != 0:
+            # VMS is always supposed to be the highest
+            for name in ret._fields:
+                if name != 'vms':
+                    value = getattr(ret, name)
+                    self.assertGreater(ret.vms, value, msg=ret)
+        elif WINDOWS:
+            self.assertGreaterEqual(ret.peak_wset, ret.wset)
+            self.assertGreaterEqual(ret.peak_paged_pool, ret.paged_pool)
+            self.assertGreaterEqual(ret.peak_nonpaged_pool, ret.nonpaged_pool)
+            self.assertGreaterEqual(ret.peak_pagefile, ret.pagefile)
+
+    def memory_full_info(self, ret, proc):
+        assert is_namedtuple(ret)
+        total = psutil.virtual_memory().total
+        for name in ret._fields:
+            value = getattr(ret, name)
+            self.assertIsInstance(value, (int, long))
+            self.assertGreaterEqual(value, 0, msg=(name, value))
+            if LINUX or OSX and name in ('vms', 'data'):
+                # On Linux there are processes (e.g. 'goa-daemon') whose
+                # VMS is incredibly high for some reason.
+                continue
+            self.assertLessEqual(value, total, msg=(name, value, total))
+
+        if LINUX:
+            self.assertGreaterEqual(ret.pss, ret.uss)
+
+    def open_files(self, ret, proc):
+        self.assertIsInstance(ret, list)
+        for f in ret:
+            self.assertIsInstance(f.fd, int)
+            self.assertIsInstance(f.path, str)
+            if WINDOWS:
+                self.assertEqual(f.fd, -1)
+            elif LINUX:
+                self.assertIsInstance(f.position, int)
+                self.assertIsInstance(f.mode, str)
+                self.assertIsInstance(f.flags, int)
+                self.assertGreaterEqual(f.position, 0)
+                self.assertIn(f.mode, ('r', 'w', 'a', 'r+', 'a+'))
+                self.assertGreater(f.flags, 0)
+            elif BSD and not f.path:
+                # XXX see: https://github.com/giampaolo/psutil/issues/595
+                continue
+            assert os.path.isabs(f.path), f
+            assert os.path.isfile(f.path), f
+
+    def num_fds(self, ret, proc):
+        self.assertIsInstance(ret, int)
+        self.assertGreaterEqual(ret, 0)
+
+    def connections(self, ret, proc):
+        self.assertEqual(len(ret), len(set(ret)))
+        for conn in ret:
+            check_connection_ntuple(conn)
+
+    def cwd(self, ret, proc):
+        if ret:     # 'ret' can be None or empty
+            self.assertIsInstance(ret, str)
+            assert os.path.isabs(ret), ret
+            try:
+                st = os.stat(ret)
+            except OSError as err:
+                if WINDOWS and err.errno in \
+                        psutil._psplatform.ACCESS_DENIED_SET:
+                    pass
+                # directory has been removed in mean time
+                elif err.errno != errno.ENOENT:
+                    raise
+            else:
+                assert stat.S_ISDIR(st.st_mode)
+
+    def memory_percent(self, ret, proc):
+        self.assertIsInstance(ret, float)
+        assert 0 <= ret <= 100, ret
+
+    def is_running(self, ret, proc):
+        self.assertIsInstance(ret, bool)
+
+    def cpu_affinity(self, ret, proc):
+        self.assertIsInstance(ret, list)
+        assert ret != [], ret
+        cpus = range(psutil.cpu_count())
+        for n in ret:
+            self.assertIsInstance(n, int)
+            self.assertIn(n, cpus)
+
+    def terminal(self, ret, proc):
+        self.assertIsInstance(ret, (str, type(None)))
+        if ret is not None:
+            assert os.path.isabs(ret), ret
+            assert os.path.exists(ret), ret
+
+    def memory_maps(self, ret, proc):
+        for nt in ret:
+            self.assertIsInstance(nt.addr, str)
+            self.assertIsInstance(nt.perms, str)
+            self.assertIsInstance(nt.path, str)
+            for fname in nt._fields:
+                value = getattr(nt, fname)
+                if fname == 'path':
+                    if not value.startswith('['):
+                        assert os.path.isabs(nt.path), nt.path
+                        # commented as on Linux we might get
+                        # '/foo/bar (deleted)'
+                        # assert os.path.exists(nt.path), nt.path
+                elif fname in ('addr', 'perms'):
+                    assert value
+                else:
+                    self.assertIsInstance(value, (int, long))
+                    self.assertGreaterEqual(value, 0)
+
+    def num_handles(self, ret, proc):
+        self.assertIsInstance(ret, int)
+        self.assertGreaterEqual(ret, 0)
+
+    def nice(self, ret, proc):
+        self.assertIsInstance(ret, int)
+        if POSIX:
+            assert -20 <= ret <= 20, ret
+        else:
+            priorities = [getattr(psutil, x) for x in dir(psutil)
+                          if x.endswith('_PRIORITY_CLASS')]
+            self.assertIn(ret, priorities)
+
+    def num_ctx_switches(self, ret, proc):
+        assert is_namedtuple(ret)
+        for value in ret:
+            self.assertIsInstance(value, (int, long))
+            self.assertGreaterEqual(value, 0)
+
+    def rlimit(self, ret, proc):
+        self.assertIsInstance(ret, tuple)
+        self.assertEqual(len(ret), 2)
+        self.assertGreaterEqual(ret[0], -1)
+        self.assertGreaterEqual(ret[1], -1)
+
+    def environ(self, ret, proc):
+        self.assertIsInstance(ret, dict)
+        for k, v in ret.items():
+            self.assertIsInstance(k, str)
+            self.assertIsInstance(v, str)
+
+
+if __name__ == '__main__':
+    run_test_module_by_name(__file__)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_linux.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_linux.py
new file mode 100644
index 00000000..0f981b6b
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_linux.py
@@ -0,0 +1,2083 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Linux specific tests."""
+
+from __future__ import division
+import collections
+import contextlib
+import errno
+import glob
+import io
+import os
+import re
+import shutil
+import socket
+import struct
+import tempfile
+import textwrap
+import time
+import warnings
+
+import psutil
+from psutil import LINUX
+from psutil._compat import basestring
+from psutil._compat import PY3
+from psutil._compat import u
+from psutil.tests import call_until
+from psutil.tests import HAS_BATTERY
+from psutil.tests import HAS_CPU_FREQ
+from psutil.tests import HAS_RLIMIT
+from psutil.tests import MEMORY_TOLERANCE
+from psutil.tests import mock
+from psutil.tests import PYPY
+from psutil.tests import pyrun
+from psutil.tests import reap_children
+from psutil.tests import reload_module
+from psutil.tests import retry_before_failing
+from psutil.tests import run_test_module_by_name
+from psutil.tests import safe_rmpath
+from psutil.tests import sh
+from psutil.tests import skip_on_not_implemented
+from psutil.tests import TESTFN
+from psutil.tests import ThreadTask
+from psutil.tests import TRAVIS
+from psutil.tests import unittest
+from psutil.tests import which
+
+
+HERE = os.path.abspath(os.path.dirname(__file__))
+SIOCGIFADDR = 0x8915
+SIOCGIFCONF = 0x8912
+SIOCGIFHWADDR = 0x8927
+if LINUX:
+    SECTOR_SIZE = 512
+
+
+# =====================================================================
+# --- utils
+# =====================================================================
+
+
+def get_ipv4_address(ifname):
+    import fcntl
+    ifname = ifname[:15]
+    if PY3:
+        ifname = bytes(ifname, 'ascii')
+    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+    with contextlib.closing(s):
+        return socket.inet_ntoa(
+            fcntl.ioctl(s.fileno(),
+                        SIOCGIFADDR,
+                        struct.pack('256s', ifname))[20:24])
+
+
+def get_mac_address(ifname):
+    import fcntl
+    ifname = ifname[:15]
+    if PY3:
+        ifname = bytes(ifname, 'ascii')
+    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+    with contextlib.closing(s):
+        info = fcntl.ioctl(
+            s.fileno(), SIOCGIFHWADDR, struct.pack('256s', ifname))
+        if PY3:
+            def ord(x):
+                return x
+        else:
+            import __builtin__
+            ord = __builtin__.ord
+        return ''.join(['%02x:' % ord(char) for char in info[18:24]])[:-1]
+
+
+def free_swap():
+    """Parse 'free' cmd and return swap memory's s total, used and free
+    values.
+    """
+    out = sh('free -b')
+    lines = out.split('\n')
+    for line in lines:
+        if line.startswith('Swap'):
+            _, total, used, free = line.split()
+            nt = collections.namedtuple('free', 'total used free')
+            return nt(int(total), int(used), int(free))
+    raise ValueError(
+        "can't find 'Swap' in 'free' output:\n%s" % '\n'.join(lines))
+
+
+def free_physmem():
+    """Parse 'free' cmd and return physical memory's total, used
+    and free values.
+    """
+    # Note: free can have 2 different formats, invalidating 'shared'
+    # and 'cached' memory which may have different positions so we
+    # do not return them.
+    # https://github.com/giampaolo/psutil/issues/538#issuecomment-57059946
+    out = sh('free -b')
+    lines = out.split('\n')
+    for line in lines:
+        if line.startswith('Mem'):
+            total, used, free, shared = \
+                [int(x) for x in line.split()[1:5]]
+            nt = collections.namedtuple(
+                'free', 'total used free shared output')
+            return nt(total, used, free, shared, out)
+    raise ValueError(
+        "can't find 'Mem' in 'free' output:\n%s" % '\n'.join(lines))
+
+
+def vmstat(stat):
+    out = sh("vmstat -s")
+    for line in out.split("\n"):
+        line = line.strip()
+        if stat in line:
+            return int(line.split(' ')[0])
+    raise ValueError("can't find %r in 'vmstat' output" % stat)
+
+
+def get_free_version_info():
+    out = sh("free -V").strip()
+    return tuple(map(int, out.split()[-1].split('.')))
+
+
+@contextlib.contextmanager
+def mock_open_content(for_path, content):
+    """Mock open() builtin and forces it to return a certain `content`
+    on read() if the path being opened matches `for_path`.
+    """
+    def open_mock(name, *args, **kwargs):
+        if name == for_path:
+            if PY3:
+                if isinstance(content, basestring):
+                    return io.StringIO(content)
+                else:
+                    return io.BytesIO(content)
+            else:
+                return io.BytesIO(content)
+        else:
+            return orig_open(name, *args, **kwargs)
+
+    orig_open = open
+    patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+    with mock.patch(patch_point, create=True, side_effect=open_mock) as m:
+        yield m
+
+
+@contextlib.contextmanager
+def mock_open_exception(for_path, exc):
+    """Mock open() builtin and raises `exc` if the path being opened
+    matches `for_path`.
+    """
+    def open_mock(name, *args, **kwargs):
+        if name == for_path:
+            raise exc
+        else:
+            return orig_open(name, *args, **kwargs)
+
+    orig_open = open
+    patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+    with mock.patch(patch_point, create=True, side_effect=open_mock) as m:
+        yield m
+
+
+# =====================================================================
+# --- system virtual memory
+# =====================================================================
+
+
+@unittest.skipIf(not LINUX, "LINUX only")
+class TestSystemVirtualMemory(unittest.TestCase):
+
+    def test_total(self):
+        # free_value = free_physmem().total
+        # psutil_value = psutil.virtual_memory().total
+        # self.assertEqual(free_value, psutil_value)
+        vmstat_value = vmstat('total memory') * 1024
+        psutil_value = psutil.virtual_memory().total
+        self.assertAlmostEqual(vmstat_value, psutil_value)
+
+    # Older versions of procps used slab memory to calculate used memory.
+    # This got changed in:
+    # https://gitlab.com/procps-ng/procps/commit/
+    #     05d751c4f076a2f0118b914c5e51cfbb4762ad8e
+    @unittest.skipIf(LINUX and get_free_version_info() < (3, 3, 12),
+                     "old free version")
+    @retry_before_failing()
+    def test_used(self):
+        free = free_physmem()
+        free_value = free.used
+        psutil_value = psutil.virtual_memory().used
+        self.assertAlmostEqual(
+            free_value, psutil_value, delta=MEMORY_TOLERANCE,
+            msg='%s %s \n%s' % (free_value, psutil_value, free.output))
+
+    @unittest.skipIf(TRAVIS, "unreliable on TRAVIS")
+    @retry_before_failing()
+    def test_free(self):
+        # _, _, free_value, _ = free_physmem()
+        # psutil_value = psutil.virtual_memory().free
+        # self.assertAlmostEqual(
+        #     free_value, psutil_value, delta=MEMORY_TOLERANCE)
+        vmstat_value = vmstat('free memory') * 1024
+        psutil_value = psutil.virtual_memory().free
+        self.assertAlmostEqual(
+            vmstat_value, psutil_value, delta=MEMORY_TOLERANCE)
+
+    @retry_before_failing()
+    def test_buffers(self):
+        vmstat_value = vmstat('buffer memory') * 1024
+        psutil_value = psutil.virtual_memory().buffers
+        self.assertAlmostEqual(
+            vmstat_value, psutil_value, delta=MEMORY_TOLERANCE)
+
+    # https://travis-ci.org/giampaolo/psutil/jobs/226719664
+    @unittest.skipIf(TRAVIS, "unreliable on TRAVIS")
+    @retry_before_failing()
+    def test_active(self):
+        vmstat_value = vmstat('active memory') * 1024
+        psutil_value = psutil.virtual_memory().active
+        self.assertAlmostEqual(
+            vmstat_value, psutil_value, delta=MEMORY_TOLERANCE)
+
+    # https://travis-ci.org/giampaolo/psutil/jobs/227242952
+    @unittest.skipIf(TRAVIS, "unreliable on TRAVIS")
+    @retry_before_failing()
+    def test_inactive(self):
+        vmstat_value = vmstat('inactive memory') * 1024
+        psutil_value = psutil.virtual_memory().inactive
+        self.assertAlmostEqual(
+            vmstat_value, psutil_value, delta=MEMORY_TOLERANCE)
+
+    @retry_before_failing()
+    def test_shared(self):
+        free = free_physmem()
+        free_value = free.shared
+        if free_value == 0:
+            raise unittest.SkipTest("free does not support 'shared' column")
+        psutil_value = psutil.virtual_memory().shared
+        self.assertAlmostEqual(
+            free_value, psutil_value, delta=MEMORY_TOLERANCE,
+            msg='%s %s \n%s' % (free_value, psutil_value, free.output))
+
+    @retry_before_failing()
+    def test_available(self):
+        # "free" output format has changed at some point:
+        # https://github.com/giampaolo/psutil/issues/538#issuecomment-147192098
+        out = sh("free -b")
+        lines = out.split('\n')
+        if 'available' not in lines[0]:
+            raise unittest.SkipTest("free does not support 'available' column")
+        else:
+            free_value = int(lines[1].split()[-1])
+            psutil_value = psutil.virtual_memory().available
+            self.assertAlmostEqual(
+                free_value, psutil_value, delta=MEMORY_TOLERANCE,
+                msg='%s %s \n%s' % (free_value, psutil_value, out))
+
+    def test_warnings_on_misses(self):
+        # Emulate a case where /proc/meminfo provides few info.
+        # psutil is supposed to set the missing fields to 0 and
+        # raise a warning.
+        with mock_open_content(
+            '/proc/meminfo',
+            textwrap.dedent("""\
+                Active(anon):    6145416 kB
+                Active(file):    2950064 kB
+                Inactive(anon):   574764 kB
+                Inactive(file):  1567648 kB
+                MemAvailable:         -1 kB
+                MemFree:         2057400 kB
+                MemTotal:       16325648 kB
+                SReclaimable:     346648 kB
+                """).encode()) as m:
+            with warnings.catch_warnings(record=True) as ws:
+                warnings.simplefilter("always")
+                ret = psutil.virtual_memory()
+                assert m.called
+                self.assertEqual(len(ws), 1)
+                w = ws[0]
+                assert w.filename.endswith('psutil/_pslinux.py')
+                self.assertIn(
+                    "memory stats couldn't be determined", str(w.message))
+                self.assertIn("cached", str(w.message))
+                self.assertIn("shared", str(w.message))
+                self.assertIn("active", str(w.message))
+                self.assertIn("inactive", str(w.message))
+                self.assertIn("buffers", str(w.message))
+                self.assertIn("available", str(w.message))
+                self.assertEqual(ret.cached, 0)
+                self.assertEqual(ret.active, 0)
+                self.assertEqual(ret.inactive, 0)
+                self.assertEqual(ret.shared, 0)
+                self.assertEqual(ret.buffers, 0)
+                self.assertEqual(ret.available, 0)
+                self.assertEqual(ret.slab, 0)
+
+    def test_avail_old_percent(self):
+        # Make sure that our calculation of avail mem for old kernels
+        # is off by max 10%.
+        from psutil._pslinux import calculate_avail_vmem
+        from psutil._pslinux import open_binary
+
+        mems = {}
+        with open_binary('/proc/meminfo') as f:
+            for line in f:
+                fields = line.split()
+                mems[fields[0]] = int(fields[1]) * 1024
+
+        a = calculate_avail_vmem(mems)
+        if b'MemAvailable:' in mems:
+            b = mems[b'MemAvailable:']
+            diff_percent = abs(a - b) / a * 100
+            self.assertLess(diff_percent, 10)
+
+    def test_avail_old_comes_from_kernel(self):
+        # Make sure "MemAvailable:" coluimn is used instead of relying
+        # on our internal algorithm to calculate avail mem.
+        with mock_open_content(
+            '/proc/meminfo',
+            textwrap.dedent("""\
+                Active:          9444728 kB
+                Active(anon):    6145416 kB
+                Active(file):    2950064 kB
+                Buffers:          287952 kB
+                Cached:          4818144 kB
+                Inactive(file):  1578132 kB
+                Inactive(anon):   574764 kB
+                Inactive(file):  1567648 kB
+                MemAvailable:    6574984 kB
+                MemFree:         2057400 kB
+                MemTotal:       16325648 kB
+                Shmem:            577588 kB
+                SReclaimable:     346648 kB
+                """).encode()) as m:
+            with warnings.catch_warnings(record=True) as ws:
+                ret = psutil.virtual_memory()
+            assert m.called
+            self.assertEqual(ret.available, 6574984 * 1024)
+            w = ws[0]
+            self.assertIn(
+                "inactive memory stats couldn't be determined", str(w.message))
+
+    def test_avail_old_missing_fields(self):
+        # Remove Active(file), Inactive(file) and SReclaimable
+        # from /proc/meminfo and make sure the fallback is used
+        # (free + cached),
+        with mock_open_content(
+            "/proc/meminfo",
+            textwrap.dedent("""\
+                    Active:          9444728 kB
+                    Active(anon):    6145416 kB
+                    Buffers:          287952 kB
+                    Cached:          4818144 kB
+                    Inactive(file):  1578132 kB
+                    Inactive(anon):   574764 kB
+                    MemFree:         2057400 kB
+                    MemTotal:       16325648 kB
+                    Shmem:            577588 kB
+                    """).encode()) as m:
+            with warnings.catch_warnings(record=True) as ws:
+                ret = psutil.virtual_memory()
+            assert m.called
+            self.assertEqual(ret.available, 2057400 * 1024 + 4818144 * 1024)
+            w = ws[0]
+            self.assertIn(
+                "inactive memory stats couldn't be determined", str(w.message))
+
+    def test_avail_old_missing_zoneinfo(self):
+        # Remove /proc/zoneinfo file. Make sure fallback is used
+        # (free + cached).
+        with mock_open_content(
+                "/proc/meminfo",
+                textwrap.dedent("""\
+                    Active:          9444728 kB
+                    Active(anon):    6145416 kB
+                    Active(file):    2950064 kB
+                    Buffers:          287952 kB
+                    Cached:          4818144 kB
+                    Inactive(file):  1578132 kB
+                    Inactive(anon):   574764 kB
+                    Inactive(file):  1567648 kB
+                    MemFree:         2057400 kB
+                    MemTotal:       16325648 kB
+                    Shmem:            577588 kB
+                    SReclaimable:     346648 kB
+                    """).encode()):
+            with mock_open_exception(
+                    "/proc/zoneinfo",
+                    IOError(errno.ENOENT, 'no such file or directory')):
+                with warnings.catch_warnings(record=True) as ws:
+                    ret = psutil.virtual_memory()
+                    self.assertEqual(
+                        ret.available, 2057400 * 1024 + 4818144 * 1024)
+                    w = ws[0]
+                    self.assertIn(
+                        "inactive memory stats couldn't be determined",
+                        str(w.message))
+
+    def test_virtual_memory_mocked(self):
+        # Emulate /proc/meminfo because neither vmstat nor free return slab.
+        def open_mock(name, *args, **kwargs):
+            if name == '/proc/meminfo':
+                return io.BytesIO(textwrap.dedent("""\
+                    MemTotal:              100 kB
+                    MemFree:               2 kB
+                    MemAvailable:          3 kB
+                    Buffers:               4 kB
+                    Cached:                5 kB
+                    SwapCached:            6 kB
+                    Active:                7 kB
+                    Inactive:              8 kB
+                    Active(anon):          9 kB
+                    Inactive(anon):        10 kB
+                    Active(file):          11 kB
+                    Inactive(file):        12 kB
+                    Unevictable:           13 kB
+                    Mlocked:               14 kB
+                    SwapTotal:             15 kB
+                    SwapFree:              16 kB
+                    Dirty:                 17 kB
+                    Writeback:             18 kB
+                    AnonPages:             19 kB
+                    Mapped:                20 kB
+                    Shmem:                 21 kB
+                    Slab:                  22 kB
+                    SReclaimable:          23 kB
+                    SUnreclaim:            24 kB
+                    KernelStack:           25 kB
+                    PageTables:            26 kB
+                    NFS_Unstable:          27 kB
+                    Bounce:                28 kB
+                    WritebackTmp:          29 kB
+                    CommitLimit:           30 kB
+                    Committed_AS:          31 kB
+                    VmallocTotal:          32 kB
+                    VmallocUsed:           33 kB
+                    VmallocChunk:          34 kB
+                    HardwareCorrupted:     35 kB
+                    AnonHugePages:         36 kB
+                    ShmemHugePages:        37 kB
+                    ShmemPmdMapped:        38 kB
+                    CmaTotal:              39 kB
+                    CmaFree:               40 kB
+                    HugePages_Total:       41 kB
+                    HugePages_Free:        42 kB
+                    HugePages_Rsvd:        43 kB
+                    HugePages_Surp:        44 kB
+                    Hugepagesize:          45 kB
+                    DirectMap46k:          46 kB
+                    DirectMap47M:          47 kB
+                    DirectMap48G:          48 kB
+                    """).encode())
+            else:
+                return orig_open(name, *args, **kwargs)
+
+        orig_open = open
+        patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+        with mock.patch(patch_point, create=True, side_effect=open_mock) as m:
+            mem = psutil.virtual_memory()
+            assert m.called
+            self.assertEqual(mem.total, 100 * 1024)
+            self.assertEqual(mem.free, 2 * 1024)
+            self.assertEqual(mem.buffers, 4 * 1024)
+            # cached mem also includes reclaimable memory
+            self.assertEqual(mem.cached, (5 + 23) * 1024)
+            self.assertEqual(mem.shared, 21 * 1024)
+            self.assertEqual(mem.active, 7 * 1024)
+            self.assertEqual(mem.inactive, 8 * 1024)
+            self.assertEqual(mem.slab, 22 * 1024)
+            self.assertEqual(mem.available, 3 * 1024)
+
+
+# =====================================================================
+# --- system swap memory
+# =====================================================================
+
+
+@unittest.skipIf(not LINUX, "LINUX only")
+class TestSystemSwapMemory(unittest.TestCase):
+
+    @staticmethod
+    def meminfo_has_swap_info():
+        """Return True if /proc/meminfo provides swap metrics."""
+        with open("/proc/meminfo") as f:
+            data = f.read()
+        return 'SwapTotal:' in data and 'SwapFree:' in data
+
+    def test_total(self):
+        free_value = free_swap().total
+        psutil_value = psutil.swap_memory().total
+        return self.assertAlmostEqual(
+            free_value, psutil_value, delta=MEMORY_TOLERANCE)
+
+    @retry_before_failing()
+    def test_used(self):
+        free_value = free_swap().used
+        psutil_value = psutil.swap_memory().used
+        return self.assertAlmostEqual(
+            free_value, psutil_value, delta=MEMORY_TOLERANCE)
+
+    @retry_before_failing()
+    def test_free(self):
+        free_value = free_swap().free
+        psutil_value = psutil.swap_memory().free
+        return self.assertAlmostEqual(
+            free_value, psutil_value, delta=MEMORY_TOLERANCE)
+
+    def test_missing_sin_sout(self):
+        with mock.patch('psutil._common.open', create=True) as m:
+            with warnings.catch_warnings(record=True) as ws:
+                warnings.simplefilter("always")
+                ret = psutil.swap_memory()
+                assert m.called
+                self.assertEqual(len(ws), 1)
+                w = ws[0]
+                assert w.filename.endswith('psutil/_pslinux.py')
+                self.assertIn(
+                    "'sin' and 'sout' swap memory stats couldn't "
+                    "be determined", str(w.message))
+                self.assertEqual(ret.sin, 0)
+                self.assertEqual(ret.sout, 0)
+
+    def test_no_vmstat_mocked(self):
+        # see https://github.com/giampaolo/psutil/issues/722
+        with mock_open_exception(
+                "/proc/vmstat",
+                IOError(errno.ENOENT, 'no such file or directory')) as m:
+            with warnings.catch_warnings(record=True) as ws:
+                warnings.simplefilter("always")
+                ret = psutil.swap_memory()
+                assert m.called
+                self.assertEqual(len(ws), 1)
+                w = ws[0]
+                assert w.filename.endswith('psutil/_pslinux.py')
+                self.assertIn(
+                    "'sin' and 'sout' swap memory stats couldn't "
+                    "be determined and were set to 0",
+                    str(w.message))
+                self.assertEqual(ret.sin, 0)
+                self.assertEqual(ret.sout, 0)
+
+    def test_meminfo_against_sysinfo(self):
+        # Make sure the content of /proc/meminfo about swap memory
+        # matches sysinfo() syscall, see:
+        # https://github.com/giampaolo/psutil/issues/1015
+        if not self.meminfo_has_swap_info():
+            return unittest.skip("/proc/meminfo has no swap metrics")
+        with mock.patch('psutil._pslinux.cext.linux_sysinfo') as m:
+            swap = psutil.swap_memory()
+        assert not m.called
+        import psutil._psutil_linux as cext
+        _, _, _, _, total, free, unit_multiplier = cext.linux_sysinfo()
+        total *= unit_multiplier
+        free *= unit_multiplier
+        self.assertEqual(swap.total, total)
+        self.assertAlmostEqual(swap.free, free, delta=MEMORY_TOLERANCE)
+
+    def test_emulate_meminfo_has_no_metrics(self):
+        # Emulate a case where /proc/meminfo provides no swap metrics
+        # in which case sysinfo() syscall is supposed to be used
+        # as a fallback.
+        with mock_open_content("/proc/meminfo", b"") as m:
+            psutil.swap_memory()
+            assert m.called
+
+
+# =====================================================================
+# --- system CPU
+# =====================================================================
+
+
+@unittest.skipIf(not LINUX, "LINUX only")
+class TestSystemCPU(unittest.TestCase):
+
+    @unittest.skipIf(TRAVIS, "unknown failure on travis")
+    def test_cpu_times(self):
+        fields = psutil.cpu_times()._fields
+        kernel_ver = re.findall(r'\d+\.\d+\.\d+', os.uname()[2])[0]
+        kernel_ver_info = tuple(map(int, kernel_ver.split('.')))
+        if kernel_ver_info >= (2, 6, 11):
+            self.assertIn('steal', fields)
+        else:
+            self.assertNotIn('steal', fields)
+        if kernel_ver_info >= (2, 6, 24):
+            self.assertIn('guest', fields)
+        else:
+            self.assertNotIn('guest', fields)
+        if kernel_ver_info >= (3, 2, 0):
+            self.assertIn('guest_nice', fields)
+        else:
+            self.assertNotIn('guest_nice', fields)
+
+    @unittest.skipIf(not os.path.exists("/sys/devices/system/cpu/online"),
+                     "/sys/devices/system/cpu/online does not exist")
+    def test_cpu_count_logical_w_sysdev_cpu_online(self):
+        with open("/sys/devices/system/cpu/online") as f:
+            value = f.read().strip()
+        if "-" in str(value):
+            value = int(value.split('-')[1]) + 1
+            self.assertEqual(psutil.cpu_count(), value)
+
+    @unittest.skipIf(not os.path.exists("/sys/devices/system/cpu"),
+                     "/sys/devices/system/cpu does not exist")
+    def test_cpu_count_logical_w_sysdev_cpu_num(self):
+        ls = os.listdir("/sys/devices/system/cpu")
+        count = len([x for x in ls if re.search(r"cpu\d+$", x) is not None])
+        self.assertEqual(psutil.cpu_count(), count)
+
+    @unittest.skipIf(not which("nproc"), "nproc utility not available")
+    def test_cpu_count_logical_w_nproc(self):
+        num = int(sh("nproc --all"))
+        self.assertEqual(psutil.cpu_count(logical=True), num)
+
+    @unittest.skipIf(not which("lscpu"), "lscpu utility not available")
+    def test_cpu_count_logical_w_lscpu(self):
+        out = sh("lscpu -p")
+        num = len([x for x in out.split('\n') if not x.startswith('#')])
+        self.assertEqual(psutil.cpu_count(logical=True), num)
+
+    @unittest.skipIf(not which("lscpu"), "lscpu utility not available")
+    def test_cpu_count_physical_w_lscpu(self):
+        out = sh("lscpu -p")
+        core_ids = set()
+        for line in out.split('\n'):
+            if not line.startswith('#'):
+                fields = line.split(',')
+                core_ids.add(fields[1])
+        self.assertEqual(psutil.cpu_count(logical=False), len(core_ids))
+
+    def test_cpu_count_logical_mocked(self):
+        import psutil._pslinux
+        original = psutil._pslinux.cpu_count_logical()
+        # Here we want to mock os.sysconf("SC_NPROCESSORS_ONLN") in
+        # order to cause the parsing of /proc/cpuinfo and /proc/stat.
+        with mock.patch(
+                'psutil._pslinux.os.sysconf', side_effect=ValueError) as m:
+            self.assertEqual(psutil._pslinux.cpu_count_logical(), original)
+            assert m.called
+
+            # Let's have open() return emtpy data and make sure None is
+            # returned ('cause we mimick os.cpu_count()).
+            with mock.patch('psutil._common.open', create=True) as m:
+                self.assertIsNone(psutil._pslinux.cpu_count_logical())
+                self.assertEqual(m.call_count, 2)
+                # /proc/stat should be the last one
+                self.assertEqual(m.call_args[0][0], '/proc/stat')
+
+            # Let's push this a bit further and make sure /proc/cpuinfo
+            # parsing works as expected.
+            with open('/proc/cpuinfo', 'rb') as f:
+                cpuinfo_data = f.read()
+            fake_file = io.BytesIO(cpuinfo_data)
+            with mock.patch('psutil._common.open',
+                            return_value=fake_file, create=True) as m:
+                self.assertEqual(psutil._pslinux.cpu_count_logical(), original)
+
+            # Finally, let's make /proc/cpuinfo return meaningless data;
+            # this way we'll fall back on relying on /proc/stat
+            with mock_open_content('/proc/cpuinfo', b"") as m:
+                self.assertEqual(psutil._pslinux.cpu_count_logical(), original)
+                m.called
+
+    def test_cpu_count_physical_mocked(self):
+        # Have open() return emtpy data and make sure None is returned
+        # ('cause we want to mimick os.cpu_count())
+        with mock.patch('psutil._common.open', create=True) as m:
+            self.assertIsNone(psutil._pslinux.cpu_count_physical())
+            assert m.called
+
+    @unittest.skipIf(not HAS_CPU_FREQ, "not supported")
+    def test_cpu_freq_no_result(self):
+        with mock.patch("psutil._pslinux.glob.glob", return_value=[]):
+            self.assertIsNone(psutil.cpu_freq())
+
+    @unittest.skipIf(TRAVIS, "fails on Travis")
+    @unittest.skipIf(not HAS_CPU_FREQ, "not supported")
+    def test_cpu_freq_use_second_file(self):
+        # https://github.com/giampaolo/psutil/issues/981
+        def glob_mock(pattern):
+            if pattern.startswith("/sys/devices/system/cpu/cpufreq/policy"):
+                flags.append(None)
+                return []
+            else:
+                flags.append(None)
+                return orig_glob(pattern)
+
+        flags = []
+        orig_glob = glob.glob
+        with mock.patch("psutil._pslinux.glob.glob", side_effect=glob_mock,
+                        create=True):
+            assert psutil.cpu_freq()
+            self.assertEqual(len(flags), 2)
+
+    @unittest.skipIf(not HAS_CPU_FREQ, "not supported")
+    def test_cpu_freq_use_cpuinfo(self):
+        # Emulate a case where /sys/devices/system/cpu/cpufreq* does not
+        # exist and /proc/cpuinfo is used instead.
+        def path_exists_mock(path):
+            if path.startswith('/sys/devices/system/cpu/'):
+                return False
+            else:
+                if path == "/proc/cpuinfo":
+                    flags.append(None)
+                return os_path_exists(path)
+
+        flags = []
+        os_path_exists = os.path.exists
+        try:
+            with mock.patch("os.path.exists", side_effect=path_exists_mock):
+                reload_module(psutil._pslinux)
+                ret = psutil.cpu_freq()
+                assert ret
+                assert flags
+                self.assertIsNone(ret.min)
+                self.assertIsNone(ret.max)
+                for freq in psutil.cpu_freq(percpu=True):
+                    self.assertIsNone(freq.min)
+                    self.assertIsNone(freq.max)
+        finally:
+            reload_module(psutil._pslinux)
+            reload_module(psutil)
+
+    @unittest.skipIf(not HAS_CPU_FREQ, "not supported")
+    def test_cpu_freq_emulate_data(self):
+        def open_mock(name, *args, **kwargs):
+            if name.endswith('/scaling_cur_freq'):
+                return io.BytesIO(b"500000")
+            elif name.endswith('/scaling_min_freq'):
+                return io.BytesIO(b"600000")
+            elif name.endswith('/scaling_max_freq'):
+                return io.BytesIO(b"700000")
+            else:
+                return orig_open(name, *args, **kwargs)
+
+        orig_open = open
+        patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+        with mock.patch(patch_point, side_effect=open_mock):
+            with mock.patch(
+                    'glob.glob',
+                    return_value=['/sys/devices/system/cpu/cpufreq/policy0']):
+                freq = psutil.cpu_freq()
+                self.assertEqual(freq.current, 500.0)
+                self.assertEqual(freq.min, 600.0)
+                self.assertEqual(freq.max, 700.0)
+
+    @unittest.skipIf(not HAS_CPU_FREQ, "not supported")
+    def test_cpu_freq_emulate_multi_cpu(self):
+        def open_mock(name, *args, **kwargs):
+            if name.endswith('/scaling_cur_freq'):
+                return io.BytesIO(b"100000")
+            elif name.endswith('/scaling_min_freq'):
+                return io.BytesIO(b"200000")
+            elif name.endswith('/scaling_max_freq'):
+                return io.BytesIO(b"300000")
+            else:
+                return orig_open(name, *args, **kwargs)
+
+        orig_open = open
+        patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+        policies = ['/sys/devices/system/cpu/cpufreq/policy0',
+                    '/sys/devices/system/cpu/cpufreq/policy1',
+                    '/sys/devices/system/cpu/cpufreq/policy2']
+        with mock.patch(patch_point, side_effect=open_mock):
+            with mock.patch('glob.glob', return_value=policies):
+                freq = psutil.cpu_freq()
+                self.assertEqual(freq.current, 100.0)
+                self.assertEqual(freq.min, 200.0)
+                self.assertEqual(freq.max, 300.0)
+
+    @unittest.skipIf(TRAVIS, "fails on Travis")
+    @unittest.skipIf(not HAS_CPU_FREQ, "not supported")
+    def test_cpu_freq_no_scaling_cur_freq_file(self):
+        # See: https://github.com/giampaolo/psutil/issues/1071
+        def open_mock(name, *args, **kwargs):
+            if name.endswith('/scaling_cur_freq'):
+                raise IOError(errno.ENOENT, "")
+            elif name.endswith('/cpuinfo_cur_freq'):
+                return io.BytesIO(b"200000")
+            else:
+                return orig_open(name, *args, **kwargs)
+
+        orig_open = open
+        patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+        policies = ['/sys/devices/system/cpu/cpufreq/policy0',
+                    '/sys/devices/system/cpu/cpufreq/policy1',
+                    '/sys/devices/system/cpu/cpufreq/policy2']
+
+        with mock.patch(patch_point, side_effect=open_mock):
+            with mock.patch('glob.glob', return_value=policies):
+                freq = psutil.cpu_freq()
+                self.assertEqual(freq.current, 200)
+
+        # Also test that NotImplementedError is raised in case no
+        # current freq file is present.
+
+        def open_mock(name, *args, **kwargs):
+            if name.endswith('/scaling_cur_freq'):
+                raise IOError(errno.ENOENT, "")
+            elif name.endswith('/cpuinfo_cur_freq'):
+                raise IOError(errno.ENOENT, "")
+            else:
+                return orig_open(name, *args, **kwargs)
+
+        orig_open = open
+        patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+        with mock.patch(patch_point, side_effect=open_mock):
+            with mock.patch('glob.glob', return_value=policies):
+                self.assertRaises(NotImplementedError, psutil.cpu_freq)
+
+
+# =====================================================================
+# --- system CPU stats
+# =====================================================================
+
+
+@unittest.skipIf(not LINUX, "LINUX only")
+class TestSystemCPUStats(unittest.TestCase):
+
+    @unittest.skipIf(TRAVIS, "fails on Travis")
+    def test_ctx_switches(self):
+        vmstat_value = vmstat("context switches")
+        psutil_value = psutil.cpu_stats().ctx_switches
+        self.assertAlmostEqual(vmstat_value, psutil_value, delta=500)
+
+    @unittest.skipIf(TRAVIS, "fails on Travis")
+    def test_interrupts(self):
+        vmstat_value = vmstat("interrupts")
+        psutil_value = psutil.cpu_stats().interrupts
+        self.assertAlmostEqual(vmstat_value, psutil_value, delta=500)
+
+
+# =====================================================================
+# --- system network
+# =====================================================================
+
+
+@unittest.skipIf(not LINUX, "LINUX only")
+class TestSystemNetwork(unittest.TestCase):
+
+    def test_net_if_addrs_ips(self):
+        for name, addrs in psutil.net_if_addrs().items():
+            for addr in addrs:
+                if addr.family == psutil.AF_LINK:
+                    self.assertEqual(addr.address, get_mac_address(name))
+                elif addr.family == socket.AF_INET:
+                    self.assertEqual(addr.address, get_ipv4_address(name))
+                # TODO: test for AF_INET6 family
+
+    def test_net_if_stats(self):
+        for name, stats in psutil.net_if_stats().items():
+            try:
+                out = sh("ifconfig %s" % name)
+            except RuntimeError:
+                pass
+            else:
+                # Not always reliable.
+                # self.assertEqual(stats.isup, 'RUNNING' in out, msg=out)
+                self.assertEqual(stats.mtu,
+                                 int(re.findall(r'(?i)MTU[: ](\d+)', out)[0]))
+
+    @retry_before_failing()
+    def test_net_io_counters(self):
+        def ifconfig(nic):
+            ret = {}
+            out = sh("ifconfig %s" % name)
+            ret['packets_recv'] = int(
+                re.findall(r'RX packets[: ](\d+)', out)[0])
+            ret['packets_sent'] = int(
+                re.findall(r'TX packets[: ](\d+)', out)[0])
+            ret['errin'] = int(re.findall(r'errors[: ](\d+)', out)[0])
+            ret['errout'] = int(re.findall(r'errors[: ](\d+)', out)[1])
+            ret['dropin'] = int(re.findall(r'dropped[: ](\d+)', out)[0])
+            ret['dropout'] = int(re.findall(r'dropped[: ](\d+)', out)[1])
+            ret['bytes_recv'] = int(
+                re.findall(r'RX (?:packets \d+ +)?bytes[: ](\d+)', out)[0])
+            ret['bytes_sent'] = int(
+                re.findall(r'TX (?:packets \d+ +)?bytes[: ](\d+)', out)[0])
+            return ret
+
+        nio = psutil.net_io_counters(pernic=True, nowrap=False)
+        for name, stats in nio.items():
+            try:
+                ifconfig_ret = ifconfig(name)
+            except RuntimeError:
+                continue
+            self.assertAlmostEqual(
+                stats.bytes_recv, ifconfig_ret['bytes_recv'], delta=1024 * 5)
+            self.assertAlmostEqual(
+                stats.bytes_sent, ifconfig_ret['bytes_sent'], delta=1024 * 5)
+            self.assertAlmostEqual(
+                stats.packets_recv, ifconfig_ret['packets_recv'], delta=1024)
+            self.assertAlmostEqual(
+                stats.packets_sent, ifconfig_ret['packets_sent'], delta=1024)
+            self.assertAlmostEqual(
+                stats.errin, ifconfig_ret['errin'], delta=10)
+            self.assertAlmostEqual(
+                stats.errout, ifconfig_ret['errout'], delta=10)
+            self.assertAlmostEqual(
+                stats.dropin, ifconfig_ret['dropin'], delta=10)
+            self.assertAlmostEqual(
+                stats.dropout, ifconfig_ret['dropout'], delta=10)
+
+    # XXX - not reliable when having virtual NICs installed by Docker.
+    # @unittest.skipIf(not which('ip'), "'ip' utility not available")
+    # @unittest.skipIf(TRAVIS, "skipped on Travis")
+    # def test_net_if_names(self):
+    #     out = sh("ip addr").strip()
+    #     nics = [x for x in psutil.net_if_addrs().keys() if ':' not in x]
+    #     found = 0
+    #     for line in out.split('\n'):
+    #         line = line.strip()
+    #         if re.search(r"^\d+:", line):
+    #             found += 1
+    #             name = line.split(':')[1].strip()
+    #             self.assertIn(name, nics)
+    #     self.assertEqual(len(nics), found, msg="%s\n---\n%s" % (
+    #         pprint.pformat(nics), out))
+
+    @mock.patch('psutil._pslinux.socket.inet_ntop', side_effect=ValueError)
+    @mock.patch('psutil._pslinux.supports_ipv6', return_value=False)
+    def test_net_connections_ipv6_unsupported(self, supports_ipv6, inet_ntop):
+        # see: https://github.com/giampaolo/psutil/issues/623
+        try:
+            s = socket.socket(socket.AF_INET6, socket.SOCK_STREAM)
+            self.addCleanup(s.close)
+            s.bind(("::1", 0))
+        except socket.error:
+            pass
+        psutil.net_connections(kind='inet6')
+
+    def test_net_connections_mocked(self):
+        with mock_open_content(
+            '/proc/net/unix',
+            textwrap.dedent("""\
+                0: 00000003 000 000 0001 03 462170 @/tmp/dbus-Qw2hMPIU3n
+                0: 00000003 000 000 0001 03 35010 @/tmp/dbus-tB2X8h69BQ
+                0: 00000003 000 000 0001 03 34424 @/tmp/dbus-cHy80Y8O
+                000000000000000000000000000000000000000000000000000000
+                """)) as m:
+            psutil.net_connections(kind='unix')
+            assert m.called
+
+
+# =====================================================================
+# --- system disk
+# =====================================================================
+
+
+@unittest.skipIf(not LINUX, "LINUX only")
+class TestSystemDisks(unittest.TestCase):
+
+    @unittest.skipIf(not hasattr(os, 'statvfs'), "os.statvfs() not available")
+    @skip_on_not_implemented()
+    def test_disk_partitions_and_usage(self):
+        # test psutil.disk_usage() and psutil.disk_partitions()
+        # against "df -a"
+        def df(path):
+            out = sh('df -P -B 1 "%s"' % path).strip()
+            lines = out.split('\n')
+            lines.pop(0)
+            line = lines.pop(0)
+            dev, total, used, free = line.split()[:4]
+            if dev == 'none':
+                dev = ''
+            total, used, free = int(total), int(used), int(free)
+            return dev, total, used, free
+
+        for part in psutil.disk_partitions(all=False):
+            usage = psutil.disk_usage(part.mountpoint)
+            dev, total, used, free = df(part.mountpoint)
+            self.assertEqual(usage.total, total)
+            # 10 MB tollerance
+            if abs(usage.free - free) > 10 * 1024 * 1024:
+                self.fail("psutil=%s, df=%s" % (usage.free, free))
+            if abs(usage.used - used) > 10 * 1024 * 1024:
+                self.fail("psutil=%s, df=%s" % (usage.used, used))
+
+    def test_disk_partitions_mocked(self):
+        # Test that ZFS partitions are returned.
+        with open("/proc/filesystems", "r") as f:
+            data = f.read()
+        if 'zfs' in data:
+            for part in psutil.disk_partitions():
+                if part.fstype == 'zfs':
+                    break
+            else:
+                self.fail("couldn't find any ZFS partition")
+        else:
+            # No ZFS partitions on this system. Let's fake one.
+            fake_file = io.StringIO(u("nodev\tzfs\n"))
+            with mock.patch('psutil._common.open',
+                            return_value=fake_file, create=True) as m1:
+                with mock.patch(
+                        'psutil._pslinux.cext.disk_partitions',
+                        return_value=[('/dev/sdb3', '/', 'zfs', 'rw')]) as m2:
+                    ret = psutil.disk_partitions()
+                    assert m1.called
+                    assert m2.called
+                    assert ret
+                    self.assertEqual(ret[0].fstype, 'zfs')
+
+    def test_disk_partitions_procfs(self):
+        # See: https://github.com/giampaolo/psutil/issues/1307
+        try:
+            with mock.patch('os.path.realpath',
+                            return_value='/non/existent') as m:
+                with self.assertRaises(OSError) as cm:
+                    psutil.disk_partitions()
+                assert m.called
+                self.assertEqual(cm.exception.errno, errno.ENOENT)
+        finally:
+            psutil.PROCFS_PATH = "/proc"
+
+    def test_disk_io_counters_kernel_2_4_mocked(self):
+        # Tests /proc/diskstats parsing format for 2.4 kernels, see:
+        # https://github.com/giampaolo/psutil/issues/767
+        with mock_open_content(
+                '/proc/diskstats',
+                "   3     0   1 hda 2 3 4 5 6 7 8 9 10 11 12"):
+            with mock.patch('psutil._pslinux.is_storage_device',
+                            return_value=True):
+                ret = psutil.disk_io_counters(nowrap=False)
+                self.assertEqual(ret.read_count, 1)
+                self.assertEqual(ret.read_merged_count, 2)
+                self.assertEqual(ret.read_bytes, 3 * SECTOR_SIZE)
+                self.assertEqual(ret.read_time, 4)
+                self.assertEqual(ret.write_count, 5)
+                self.assertEqual(ret.write_merged_count, 6)
+                self.assertEqual(ret.write_bytes, 7 * SECTOR_SIZE)
+                self.assertEqual(ret.write_time, 8)
+                self.assertEqual(ret.busy_time, 10)
+
+    def test_disk_io_counters_kernel_2_6_full_mocked(self):
+        # Tests /proc/diskstats parsing format for 2.6 kernels,
+        # lines reporting all metrics:
+        # https://github.com/giampaolo/psutil/issues/767
+        with mock_open_content(
+                '/proc/diskstats',
+                "   3    0   hda 1 2 3 4 5 6 7 8 9 10 11"):
+            with mock.patch('psutil._pslinux.is_storage_device',
+                            return_value=True):
+                ret = psutil.disk_io_counters(nowrap=False)
+                self.assertEqual(ret.read_count, 1)
+                self.assertEqual(ret.read_merged_count, 2)
+                self.assertEqual(ret.read_bytes, 3 * SECTOR_SIZE)
+                self.assertEqual(ret.read_time, 4)
+                self.assertEqual(ret.write_count, 5)
+                self.assertEqual(ret.write_merged_count, 6)
+                self.assertEqual(ret.write_bytes, 7 * SECTOR_SIZE)
+                self.assertEqual(ret.write_time, 8)
+                self.assertEqual(ret.busy_time, 10)
+
+    def test_disk_io_counters_kernel_2_6_limited_mocked(self):
+        # Tests /proc/diskstats parsing format for 2.6 kernels,
+        # where one line of /proc/partitions return a limited
+        # amount of metrics when it bumps into a partition
+        # (instead of a disk). See:
+        # https://github.com/giampaolo/psutil/issues/767
+        with mock_open_content(
+                '/proc/diskstats',
+                "   3    1   hda 1 2 3 4"):
+            with mock.patch('psutil._pslinux.is_storage_device',
+                            return_value=True):
+                ret = psutil.disk_io_counters(nowrap=False)
+                self.assertEqual(ret.read_count, 1)
+                self.assertEqual(ret.read_bytes, 2 * SECTOR_SIZE)
+                self.assertEqual(ret.write_count, 3)
+                self.assertEqual(ret.write_bytes, 4 * SECTOR_SIZE)
+
+                self.assertEqual(ret.read_merged_count, 0)
+                self.assertEqual(ret.read_time, 0)
+                self.assertEqual(ret.write_merged_count, 0)
+                self.assertEqual(ret.write_time, 0)
+                self.assertEqual(ret.busy_time, 0)
+
+    def test_disk_io_counters_include_partitions(self):
+        # Make sure that when perdisk=True disk partitions are returned,
+        # see:
+        # https://github.com/giampaolo/psutil/pull/1313#issuecomment-408626842
+        with mock_open_content(
+                '/proc/diskstats',
+                textwrap.dedent("""\
+                    3    0   nvme0n1 1 2 3 4 5 6 7 8 9 10 11
+                    3    0   nvme0n1p1 1 2 3 4 5 6 7 8 9 10 11
+                    """)):
+            with mock.patch('psutil._pslinux.is_storage_device',
+                            return_value=False):
+                ret = psutil.disk_io_counters(perdisk=True, nowrap=False)
+                self.assertEqual(len(ret), 2)
+                self.assertEqual(ret['nvme0n1'].read_count, 1)
+                self.assertEqual(ret['nvme0n1p1'].read_count, 1)
+                self.assertEqual(ret['nvme0n1'].write_count, 5)
+                self.assertEqual(ret['nvme0n1p1'].write_count, 5)
+
+    def test_disk_io_counters_exclude_partitions(self):
+        # Make sure that when perdisk=False partitions (e.g. 'sda1',
+        # 'nvme0n1p1') are skipped and not included in the total count.
+        # https://github.com/giampaolo/psutil/pull/1313#issuecomment-408626842
+        with mock_open_content(
+                '/proc/diskstats',
+                textwrap.dedent("""\
+                    3    0   nvme0n1 1 2 3 4 5 6 7 8 9 10 11
+                    3    0   nvme0n1p1 1 2 3 4 5 6 7 8 9 10 11
+                    """)):
+            with mock.patch('psutil._pslinux.is_storage_device',
+                            return_value=False):
+                ret = psutil.disk_io_counters(perdisk=False, nowrap=False)
+                self.assertIsNone(ret)
+
+        #
+        def is_storage_device(name):
+            return name == 'nvme0n1'
+
+        with mock_open_content(
+                '/proc/diskstats',
+                textwrap.dedent("""\
+                    3    0   nvme0n1 1 2 3 4 5 6 7 8 9 10 11
+                    3    0   nvme0n1p1 1 2 3 4 5 6 7 8 9 10 11
+                    """)):
+            with mock.patch('psutil._pslinux.is_storage_device',
+                            create=True, side_effect=is_storage_device):
+                ret = psutil.disk_io_counters(perdisk=False, nowrap=False)
+                self.assertEqual(ret.read_count, 1)
+                self.assertEqual(ret.write_count, 5)
+
+    def test_disk_io_counters_sysfs(self):
+        def exists(path):
+            if path == '/proc/diskstats':
+                return False
+            return True
+
+        wprocfs = psutil.disk_io_counters(perdisk=True)
+        with mock.patch('psutil._pslinux.os.path.exists',
+                        create=True, side_effect=exists):
+            wsysfs = psutil.disk_io_counters(perdisk=True)
+        self.assertEqual(len(wprocfs), len(wsysfs))
+
+    def test_disk_io_counters_not_impl(self):
+        def exists(path):
+            return False
+
+        with mock.patch('psutil._pslinux.os.path.exists',
+                        create=True, side_effect=exists):
+            self.assertRaises(NotImplementedError, psutil.disk_io_counters)
+
+
+# =====================================================================
+# --- misc
+# =====================================================================
+
+
+@unittest.skipIf(not LINUX, "LINUX only")
+class TestMisc(unittest.TestCase):
+
+    def test_boot_time(self):
+        vmstat_value = vmstat('boot time')
+        psutil_value = psutil.boot_time()
+        self.assertEqual(int(vmstat_value), int(psutil_value))
+
+    def test_no_procfs_on_import(self):
+        my_procfs = tempfile.mkdtemp()
+
+        with open(os.path.join(my_procfs, 'stat'), 'w') as f:
+            f.write('cpu   0 0 0 0 0 0 0 0 0 0\n')
+            f.write('cpu0  0 0 0 0 0 0 0 0 0 0\n')
+            f.write('cpu1  0 0 0 0 0 0 0 0 0 0\n')
+
+        try:
+            orig_open = open
+
+            def open_mock(name, *args, **kwargs):
+                if name.startswith('/proc'):
+                    raise IOError(errno.ENOENT, 'rejecting access for test')
+                return orig_open(name, *args, **kwargs)
+
+            patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+            with mock.patch(patch_point, side_effect=open_mock):
+                reload_module(psutil)
+
+                self.assertRaises(IOError, psutil.cpu_times)
+                self.assertRaises(IOError, psutil.cpu_times, percpu=True)
+                self.assertRaises(IOError, psutil.cpu_percent)
+                self.assertRaises(IOError, psutil.cpu_percent, percpu=True)
+                self.assertRaises(IOError, psutil.cpu_times_percent)
+                self.assertRaises(
+                    IOError, psutil.cpu_times_percent, percpu=True)
+
+                psutil.PROCFS_PATH = my_procfs
+
+                self.assertEqual(psutil.cpu_percent(), 0)
+                self.assertEqual(sum(psutil.cpu_times_percent()), 0)
+
+                # since we don't know the number of CPUs at import time,
+                # we awkwardly say there are none until the second call
+                per_cpu_percent = psutil.cpu_percent(percpu=True)
+                self.assertEqual(sum(per_cpu_percent), 0)
+
+                # ditto awkward length
+                per_cpu_times_percent = psutil.cpu_times_percent(percpu=True)
+                self.assertEqual(sum(map(sum, per_cpu_times_percent)), 0)
+
+                # much user, very busy
+                with open(os.path.join(my_procfs, 'stat'), 'w') as f:
+                    f.write('cpu   1 0 0 0 0 0 0 0 0 0\n')
+                    f.write('cpu0  1 0 0 0 0 0 0 0 0 0\n')
+                    f.write('cpu1  1 0 0 0 0 0 0 0 0 0\n')
+
+                self.assertNotEqual(psutil.cpu_percent(), 0)
+                self.assertNotEqual(
+                    sum(psutil.cpu_percent(percpu=True)), 0)
+                self.assertNotEqual(sum(psutil.cpu_times_percent()), 0)
+                self.assertNotEqual(
+                    sum(map(sum, psutil.cpu_times_percent(percpu=True))), 0)
+        finally:
+            shutil.rmtree(my_procfs)
+            reload_module(psutil)
+
+        self.assertEqual(psutil.PROCFS_PATH, '/proc')
+
+    def test_cpu_steal_decrease(self):
+        # Test cumulative cpu stats decrease. We should ignore this.
+        # See issue #1210.
+        with mock_open_content(
+            "/proc/stat",
+            textwrap.dedent("""\
+                cpu   0 0 0 0 0 0 0 1 0 0
+                cpu0  0 0 0 0 0 0 0 1 0 0
+                cpu1  0 0 0 0 0 0 0 1 0 0
+                """).encode()) as m:
+            # first call to "percent" functions should read the new stat file
+            # and compare to the "real" file read at import time - so the
+            # values are meaningless
+            psutil.cpu_percent()
+            assert m.called
+            psutil.cpu_percent(percpu=True)
+            psutil.cpu_times_percent()
+            psutil.cpu_times_percent(percpu=True)
+
+        with mock_open_content(
+            "/proc/stat",
+            textwrap.dedent("""\
+                cpu   1 0 0 0 0 0 0 0 0 0
+                cpu0  1 0 0 0 0 0 0 0 0 0
+                cpu1  1 0 0 0 0 0 0 0 0 0
+                """).encode()) as m:
+            # Increase "user" while steal goes "backwards" to zero.
+            cpu_percent = psutil.cpu_percent()
+            assert m.called
+            cpu_percent_percpu = psutil.cpu_percent(percpu=True)
+            cpu_times_percent = psutil.cpu_times_percent()
+            cpu_times_percent_percpu = psutil.cpu_times_percent(percpu=True)
+            self.assertNotEqual(cpu_percent, 0)
+            self.assertNotEqual(sum(cpu_percent_percpu), 0)
+            self.assertNotEqual(sum(cpu_times_percent), 0)
+            self.assertNotEqual(sum(cpu_times_percent), 100.0)
+            self.assertNotEqual(sum(map(sum, cpu_times_percent_percpu)), 0)
+            self.assertNotEqual(sum(map(sum, cpu_times_percent_percpu)), 100.0)
+            self.assertEqual(cpu_times_percent.steal, 0)
+            self.assertNotEqual(cpu_times_percent.user, 0)
+
+    def test_boot_time_mocked(self):
+        with mock.patch('psutil._common.open', create=True) as m:
+            self.assertRaises(
+                RuntimeError,
+                psutil._pslinux.boot_time)
+            assert m.called
+
+    def test_users_mocked(self):
+        # Make sure ':0' and ':0.0' (returned by C ext) are converted
+        # to 'localhost'.
+        with mock.patch('psutil._pslinux.cext.users',
+                        return_value=[('giampaolo', 'pts/2', ':0',
+                                       1436573184.0, True, 2)]) as m:
+            self.assertEqual(psutil.users()[0].host, 'localhost')
+            assert m.called
+        with mock.patch('psutil._pslinux.cext.users',
+                        return_value=[('giampaolo', 'pts/2', ':0.0',
+                                       1436573184.0, True, 2)]) as m:
+            self.assertEqual(psutil.users()[0].host, 'localhost')
+            assert m.called
+        # ...otherwise it should be returned as-is
+        with mock.patch('psutil._pslinux.cext.users',
+                        return_value=[('giampaolo', 'pts/2', 'foo',
+                                       1436573184.0, True, 2)]) as m:
+            self.assertEqual(psutil.users()[0].host, 'foo')
+            assert m.called
+
+    def test_procfs_path(self):
+        tdir = tempfile.mkdtemp()
+        try:
+            psutil.PROCFS_PATH = tdir
+            self.assertRaises(IOError, psutil.virtual_memory)
+            self.assertRaises(IOError, psutil.cpu_times)
+            self.assertRaises(IOError, psutil.cpu_times, percpu=True)
+            self.assertRaises(IOError, psutil.boot_time)
+            # self.assertRaises(IOError, psutil.pids)
+            self.assertRaises(IOError, psutil.net_connections)
+            self.assertRaises(IOError, psutil.net_io_counters)
+            self.assertRaises(IOError, psutil.net_if_stats)
+            # self.assertRaises(IOError, psutil.disk_io_counters)
+            self.assertRaises(IOError, psutil.disk_partitions)
+            self.assertRaises(psutil.NoSuchProcess, psutil.Process)
+        finally:
+            psutil.PROCFS_PATH = "/proc"
+            os.rmdir(tdir)
+
+    def test_issue_687(self):
+        # In case of thread ID:
+        # - pid_exists() is supposed to return False
+        # - Process(tid) is supposed to work
+        # - pids() should not return the TID
+        # See: https://github.com/giampaolo/psutil/issues/687
+        t = ThreadTask()
+        t.start()
+        try:
+            p = psutil.Process()
+            tid = p.threads()[1].id
+            assert not psutil.pid_exists(tid), tid
+            pt = psutil.Process(tid)
+            pt.as_dict()
+            self.assertNotIn(tid, psutil.pids())
+        finally:
+            t.stop()
+
+    def test_pid_exists_no_proc_status(self):
+        # Internally pid_exists relies on /proc/{pid}/status.
+        # Emulate a case where this file is empty in which case
+        # psutil is supposed to fall back on using pids().
+        with mock_open_content("/proc/%s/status", "") as m:
+            assert psutil.pid_exists(os.getpid())
+            assert m.called
+
+
+# =====================================================================
+# --- sensors
+# =====================================================================
+
+
+@unittest.skipIf(not LINUX, "LINUX only")
+@unittest.skipIf(not HAS_BATTERY, "no battery")
+class TestSensorsBattery(unittest.TestCase):
+
+    @unittest.skipIf(not which("acpi"), "acpi utility not available")
+    def test_percent(self):
+        out = sh("acpi -b")
+        acpi_value = int(out.split(",")[1].strip().replace('%', ''))
+        psutil_value = psutil.sensors_battery().percent
+        self.assertAlmostEqual(acpi_value, psutil_value, delta=1)
+
+    @unittest.skipIf(not which("acpi"), "acpi utility not available")
+    def test_power_plugged(self):
+        out = sh("acpi -b")
+        if 'unknown' in out.lower():
+            return unittest.skip("acpi output not reliable")
+        if 'discharging at zero rate' in out:
+            plugged = True
+        else:
+            plugged = "Charging" in out.split('\n')[0]
+        self.assertEqual(psutil.sensors_battery().power_plugged, plugged)
+
+    def test_emulate_power_plugged(self):
+        # Pretend the AC power cable is connected.
+        def open_mock(name, *args, **kwargs):
+            if name.endswith("AC0/online") or name.endswith("AC/online"):
+                return io.BytesIO(b"1")
+            else:
+                return orig_open(name, *args, **kwargs)
+
+        orig_open = open
+        patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+        with mock.patch(patch_point, side_effect=open_mock) as m:
+            self.assertEqual(psutil.sensors_battery().power_plugged, True)
+            self.assertEqual(
+                psutil.sensors_battery().secsleft, psutil.POWER_TIME_UNLIMITED)
+            assert m.called
+
+    def test_emulate_power_plugged_2(self):
+        # Same as above but pretend /AC0/online does not exist in which
+        # case code relies on /status file.
+        def open_mock(name, *args, **kwargs):
+            if name.endswith("AC0/online") or name.endswith("AC/online"):
+                raise IOError(errno.ENOENT, "")
+            elif name.endswith("/status"):
+                return io.StringIO(u("charging"))
+            else:
+                return orig_open(name, *args, **kwargs)
+
+        orig_open = open
+        patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+        with mock.patch(patch_point, side_effect=open_mock) as m:
+            self.assertEqual(psutil.sensors_battery().power_plugged, True)
+            assert m.called
+
+    def test_emulate_power_not_plugged(self):
+        # Pretend the AC power cable is not connected.
+        def open_mock(name, *args, **kwargs):
+            if name.endswith("AC0/online") or name.endswith("AC/online"):
+                return io.BytesIO(b"0")
+            else:
+                return orig_open(name, *args, **kwargs)
+
+        orig_open = open
+        patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+        with mock.patch(patch_point, side_effect=open_mock) as m:
+            self.assertEqual(psutil.sensors_battery().power_plugged, False)
+            assert m.called
+
+    def test_emulate_power_not_plugged_2(self):
+        # Same as above but pretend /AC0/online does not exist in which
+        # case code relies on /status file.
+        def open_mock(name, *args, **kwargs):
+            if name.endswith("AC0/online") or name.endswith("AC/online"):
+                raise IOError(errno.ENOENT, "")
+            elif name.endswith("/status"):
+                return io.StringIO(u("discharging"))
+            else:
+                return orig_open(name, *args, **kwargs)
+
+        orig_open = open
+        patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+        with mock.patch(patch_point, side_effect=open_mock) as m:
+            self.assertEqual(psutil.sensors_battery().power_plugged, False)
+            assert m.called
+
+    def test_emulate_power_undetermined(self):
+        # Pretend we can't know whether the AC power cable not
+        # connected (assert fallback to False).
+        def open_mock(name, *args, **kwargs):
+            if name.startswith("/sys/class/power_supply/AC0/online") or \
+                    name.startswith("/sys/class/power_supply/AC/online"):
+                raise IOError(errno.ENOENT, "")
+            elif name.startswith("/sys/class/power_supply/BAT0/status"):
+                return io.BytesIO(b"???")
+            else:
+                return orig_open(name, *args, **kwargs)
+
+        orig_open = open
+        patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+        with mock.patch(patch_point, side_effect=open_mock) as m:
+            self.assertIsNone(psutil.sensors_battery().power_plugged)
+            assert m.called
+
+    def test_emulate_no_base_files(self):
+        # Emulate a case where base metrics files are not present,
+        # in which case we're supposed to get None.
+        with mock_open_exception(
+                "/sys/class/power_supply/BAT0/energy_now",
+                IOError(errno.ENOENT, "")):
+            with mock_open_exception(
+                    "/sys/class/power_supply/BAT0/charge_now",
+                    IOError(errno.ENOENT, "")):
+                self.assertIsNone(psutil.sensors_battery())
+
+    def test_emulate_energy_full_0(self):
+        # Emulate a case where energy_full files returns 0.
+        with mock_open_content(
+                "/sys/class/power_supply/BAT0/energy_full", b"0") as m:
+            self.assertEqual(psutil.sensors_battery().percent, 0)
+            assert m.called
+
+    def test_emulate_energy_full_not_avail(self):
+        # Emulate a case where energy_full file does not exist.
+        # Expected fallback on /capacity.
+        with mock_open_exception(
+                "/sys/class/power_supply/BAT0/energy_full",
+                IOError(errno.ENOENT, "")):
+            with mock_open_exception(
+                    "/sys/class/power_supply/BAT0/charge_full",
+                    IOError(errno.ENOENT, "")):
+                with mock_open_content(
+                        "/sys/class/power_supply/BAT0/capacity", b"88"):
+                    self.assertEqual(psutil.sensors_battery().percent, 88)
+
+    def test_emulate_no_power(self):
+        # Emulate a case where /AC0/online file nor /BAT0/status exist.
+        with mock_open_exception(
+                "/sys/class/power_supply/AC/online",
+                IOError(errno.ENOENT, "")):
+            with mock_open_exception(
+                    "/sys/class/power_supply/AC0/online",
+                    IOError(errno.ENOENT, "")):
+                with mock_open_exception(
+                        "/sys/class/power_supply/BAT0/status",
+                        IOError(errno.ENOENT, "")):
+                    self.assertIsNone(psutil.sensors_battery().power_plugged)
+
+
+@unittest.skipIf(not LINUX, "LINUX only")
+class TestSensorsTemperatures(unittest.TestCase):
+
+    @unittest.skipIf(TRAVIS, "unreliable on TRAVIS")
+    def test_emulate_eio_error(self):
+        def open_mock(name, *args, **kwargs):
+            if name.endswith("_input"):
+                raise OSError(errno.EIO, "")
+            elif name.endswith("temp"):
+                raise OSError(errno.EIO, "")
+            else:
+                return orig_open(name, *args, **kwargs)
+
+        orig_open = open
+        patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+        with mock.patch(patch_point, side_effect=open_mock) as m:
+            with warnings.catch_warnings(record=True) as ws:
+                self.assertEqual(psutil.sensors_temperatures(), {})
+                assert m.called
+                self.assertIn("ignoring", str(ws[0].message))
+
+    def test_emulate_class_hwmon(self):
+        def open_mock(name, *args, **kwargs):
+            if name.endswith('/name'):
+                return io.StringIO(u("name"))
+            elif name.endswith('/temp1_label'):
+                return io.StringIO(u("label"))
+            elif name.endswith('/temp1_input'):
+                return io.BytesIO(b"30000")
+            elif name.endswith('/temp1_max'):
+                return io.BytesIO(b"40000")
+            elif name.endswith('/temp1_crit'):
+                return io.BytesIO(b"50000")
+            else:
+                return orig_open(name, *args, **kwargs)
+
+        orig_open = open
+        patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+        with mock.patch(patch_point, side_effect=open_mock):
+            # Test case with /sys/class/hwmon
+            with mock.patch('glob.glob',
+                            return_value=['/sys/class/hwmon/hwmon0/temp1']):
+                temp = psutil.sensors_temperatures()['name'][0]
+                self.assertEqual(temp.label, 'label')
+                self.assertEqual(temp.current, 30.0)
+                self.assertEqual(temp.high, 40.0)
+                self.assertEqual(temp.critical, 50.0)
+
+    def test_emulate_class_thermal(self):
+        def open_mock(name, *args, **kwargs):
+            if name.endswith('0_temp'):
+                return io.BytesIO(b"50000")
+            elif name.endswith('temp'):
+                return io.BytesIO(b"30000")
+            elif name.endswith('0_type'):
+                return io.StringIO(u("critical"))
+            elif name.endswith('type'):
+                return io.StringIO(u("name"))
+            else:
+                return orig_open(name, *args, **kwargs)
+
+        def glob_mock(path):
+            if path == '/sys/class/hwmon/hwmon*/temp*_*':
+                return []
+            elif path == '/sys/class/hwmon/hwmon*/device/temp*_*':
+                return []
+            elif path == '/sys/class/thermal/thermal_zone*':
+                return ['/sys/class/thermal/thermal_zone0']
+            elif path == '/sys/class/thermal/thermal_zone0/trip_point*':
+                return ['/sys/class/thermal/thermal_zone1/trip_point_0_type',
+                        '/sys/class/thermal/thermal_zone1/trip_point_0_temp']
+
+        orig_open = open
+        patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+        with mock.patch(patch_point, side_effect=open_mock):
+            with mock.patch('glob.glob', create=True, side_effect=glob_mock):
+                temp = psutil.sensors_temperatures()['name'][0]
+                self.assertEqual(temp.label, '')
+                self.assertEqual(temp.current, 30.0)
+                self.assertEqual(temp.high, 50.0)
+                self.assertEqual(temp.critical, 50.0)
+
+
+@unittest.skipIf(not LINUX, "LINUX only")
+class TestSensorsFans(unittest.TestCase):
+
+    def test_emulate_data(self):
+        def open_mock(name, *args, **kwargs):
+            if name.endswith('/name'):
+                return io.StringIO(u("name"))
+            elif name.endswith('/fan1_label'):
+                return io.StringIO(u("label"))
+            elif name.endswith('/fan1_input'):
+                return io.StringIO(u("2000"))
+            else:
+                return orig_open(name, *args, **kwargs)
+
+        orig_open = open
+        patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+        with mock.patch(patch_point, side_effect=open_mock):
+            with mock.patch('glob.glob',
+                            return_value=['/sys/class/hwmon/hwmon2/fan1']):
+                fan = psutil.sensors_fans()['name'][0]
+                self.assertEqual(fan.label, 'label')
+                self.assertEqual(fan.current, 2000)
+
+
+# =====================================================================
+# --- test process
+# =====================================================================
+
+
+@unittest.skipIf(not LINUX, "LINUX only")
+class TestProcess(unittest.TestCase):
+
+    def setUp(self):
+        safe_rmpath(TESTFN)
+
+    tearDown = setUp
+
+    def test_memory_full_info(self):
+        src = textwrap.dedent("""
+            import time
+            with open("%s", "w") as f:
+                time.sleep(10)
+            """ % TESTFN)
+        sproc = pyrun(src)
+        self.addCleanup(reap_children)
+        call_until(lambda: os.listdir('.'), "'%s' not in ret" % TESTFN)
+        p = psutil.Process(sproc.pid)
+        time.sleep(.1)
+        mem = p.memory_full_info()
+        maps = p.memory_maps(grouped=False)
+        self.assertAlmostEqual(
+            mem.uss, sum([x.private_dirty + x.private_clean for x in maps]),
+            delta=4096)
+        self.assertAlmostEqual(
+            mem.pss, sum([x.pss for x in maps]), delta=4096)
+        self.assertAlmostEqual(
+            mem.swap, sum([x.swap for x in maps]), delta=4096)
+
+    def test_memory_full_info_mocked(self):
+        # See: https://github.com/giampaolo/psutil/issues/1222
+        with mock_open_content(
+            "/proc/%s/smaps" % os.getpid(),
+            textwrap.dedent("""\
+                fffff0 r-xp 00000000 00:00 0                  [vsyscall]
+                Size:                  1 kB
+                Rss:                   2 kB
+                Pss:                   3 kB
+                Shared_Clean:          4 kB
+                Shared_Dirty:          5 kB
+                Private_Clean:         6 kB
+                Private_Dirty:         7 kB
+                Referenced:            8 kB
+                Anonymous:             9 kB
+                LazyFree:              10 kB
+                AnonHugePages:         11 kB
+                ShmemPmdMapped:        12 kB
+                Shared_Hugetlb:        13 kB
+                Private_Hugetlb:       14 kB
+                Swap:                  15 kB
+                SwapPss:               16 kB
+                KernelPageSize:        17 kB
+                MMUPageSize:           18 kB
+                Locked:                19 kB
+                VmFlags: rd ex
+                """).encode()) as m:
+            p = psutil.Process()
+            mem = p.memory_full_info()
+            assert m.called
+            self.assertEqual(mem.uss, (6 + 7 + 14) * 1024)
+            self.assertEqual(mem.pss, 3 * 1024)
+            self.assertEqual(mem.swap, 15 * 1024)
+
+    # On PYPY file descriptors are not closed fast enough.
+    @unittest.skipIf(PYPY, "unreliable on PYPY")
+    def test_open_files_mode(self):
+        def get_test_file():
+            p = psutil.Process()
+            giveup_at = time.time() + 2
+            while True:
+                for file in p.open_files():
+                    if file.path == os.path.abspath(TESTFN):
+                        return file
+                    elif time.time() > giveup_at:
+                        break
+            raise RuntimeError("timeout looking for test file")
+
+        #
+        with open(TESTFN, "w"):
+            self.assertEqual(get_test_file().mode, "w")
+        with open(TESTFN, "r"):
+            self.assertEqual(get_test_file().mode, "r")
+        with open(TESTFN, "a"):
+            self.assertEqual(get_test_file().mode, "a")
+        #
+        with open(TESTFN, "r+"):
+            self.assertEqual(get_test_file().mode, "r+")
+        with open(TESTFN, "w+"):
+            self.assertEqual(get_test_file().mode, "r+")
+        with open(TESTFN, "a+"):
+            self.assertEqual(get_test_file().mode, "a+")
+        # note: "x" bit is not supported
+        if PY3:
+            safe_rmpath(TESTFN)
+            with open(TESTFN, "x"):
+                self.assertEqual(get_test_file().mode, "w")
+            safe_rmpath(TESTFN)
+            with open(TESTFN, "x+"):
+                self.assertEqual(get_test_file().mode, "r+")
+
+    def test_open_files_file_gone(self):
+        # simulates a file which gets deleted during open_files()
+        # execution
+        p = psutil.Process()
+        files = p.open_files()
+        with tempfile.NamedTemporaryFile():
+            # give the kernel some time to see the new file
+            call_until(p.open_files, "len(ret) != %i" % len(files))
+            with mock.patch('psutil._pslinux.os.readlink',
+                            side_effect=OSError(errno.ENOENT, "")) as m:
+                files = p.open_files()
+                assert not files
+                assert m.called
+            # also simulate the case where os.readlink() returns EINVAL
+            # in which case psutil is supposed to 'continue'
+            with mock.patch('psutil._pslinux.os.readlink',
+                            side_effect=OSError(errno.EINVAL, "")) as m:
+                self.assertEqual(p.open_files(), [])
+                assert m.called
+
+    def test_open_files_fd_gone(self):
+        # Simulate a case where /proc/{pid}/fdinfo/{fd} disappears
+        # while iterating through fds.
+        # https://travis-ci.org/giampaolo/psutil/jobs/225694530
+        p = psutil.Process()
+        files = p.open_files()
+        with tempfile.NamedTemporaryFile():
+            # give the kernel some time to see the new file
+            call_until(p.open_files, "len(ret) != %i" % len(files))
+            patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+            with mock.patch(patch_point,
+                            side_effect=IOError(errno.ENOENT, "")) as m:
+                files = p.open_files()
+                assert not files
+                assert m.called
+
+    # --- mocked tests
+
+    def test_terminal_mocked(self):
+        with mock.patch('psutil._pslinux._psposix.get_terminal_map',
+                        return_value={}) as m:
+            self.assertIsNone(psutil._pslinux.Process(os.getpid()).terminal())
+            assert m.called
+
+    # TODO: re-enable this test.
+    # def test_num_ctx_switches_mocked(self):
+    #     with mock.patch('psutil._common.open', create=True) as m:
+    #         self.assertRaises(
+    #             NotImplementedError,
+    #             psutil._pslinux.Process(os.getpid()).num_ctx_switches)
+    #         assert m.called
+
+    def test_cmdline_mocked(self):
+        # see: https://github.com/giampaolo/psutil/issues/639
+        p = psutil.Process()
+        fake_file = io.StringIO(u('foo\x00bar\x00'))
+        with mock.patch('psutil._common.open',
+                        return_value=fake_file, create=True) as m:
+            self.assertEqual(p.cmdline(), ['foo', 'bar'])
+            assert m.called
+        fake_file = io.StringIO(u('foo\x00bar\x00\x00'))
+        with mock.patch('psutil._common.open',
+                        return_value=fake_file, create=True) as m:
+            self.assertEqual(p.cmdline(), ['foo', 'bar', ''])
+            assert m.called
+
+    def test_cmdline_spaces_mocked(self):
+        # see: https://github.com/giampaolo/psutil/issues/1179
+        p = psutil.Process()
+        fake_file = io.StringIO(u('foo bar '))
+        with mock.patch('psutil._common.open',
+                        return_value=fake_file, create=True) as m:
+            self.assertEqual(p.cmdline(), ['foo', 'bar'])
+            assert m.called
+        fake_file = io.StringIO(u('foo bar  '))
+        with mock.patch('psutil._common.open',
+                        return_value=fake_file, create=True) as m:
+            self.assertEqual(p.cmdline(), ['foo', 'bar', ''])
+            assert m.called
+
+    def test_readlink_path_deleted_mocked(self):
+        with mock.patch('psutil._pslinux.os.readlink',
+                        return_value='/home/foo (deleted)'):
+            self.assertEqual(psutil.Process().exe(), "/home/foo")
+            self.assertEqual(psutil.Process().cwd(), "/home/foo")
+
+    def test_threads_mocked(self):
+        # Test the case where os.listdir() returns a file (thread)
+        # which no longer exists by the time we open() it (race
+        # condition). threads() is supposed to ignore that instead
+        # of raising NSP.
+        def open_mock(name, *args, **kwargs):
+            if name.startswith('/proc/%s/task' % os.getpid()):
+                raise IOError(errno.ENOENT, "")
+            else:
+                return orig_open(name, *args, **kwargs)
+
+        orig_open = open
+        patch_point = 'builtins.open' if PY3 else '__builtin__.open'
+        with mock.patch(patch_point, side_effect=open_mock) as m:
+            ret = psutil.Process().threads()
+            assert m.called
+            self.assertEqual(ret, [])
+
+        # ...but if it bumps into something != ENOENT we want an
+        # exception.
+        def open_mock(name, *args, **kwargs):
+            if name.startswith('/proc/%s/task' % os.getpid()):
+                raise IOError(errno.EPERM, "")
+            else:
+                return orig_open(name, *args, **kwargs)
+
+        with mock.patch(patch_point, side_effect=open_mock):
+            self.assertRaises(psutil.AccessDenied, psutil.Process().threads)
+
+    def test_exe_mocked(self):
+        with mock.patch('psutil._pslinux.readlink',
+                        side_effect=OSError(errno.ENOENT, "")) as m1:
+            with mock.patch('psutil.Process.cmdline',
+                            side_effect=psutil.AccessDenied(0, "")) as m2:
+                # No such file error; might be raised also if /proc/pid/exe
+                # path actually exists for system processes with low pids
+                # (about 0-20). In this case psutil is supposed to return
+                # an empty string.
+                ret = psutil.Process().exe()
+                assert m1.called
+                assert m2.called
+                self.assertEqual(ret, "")
+
+                # ...but if /proc/pid no longer exist we're supposed to treat
+                # it as an alias for zombie process
+                with mock.patch('psutil._pslinux.os.path.lexists',
+                                return_value=False):
+                    self.assertRaises(
+                        psutil.ZombieProcess, psutil.Process().exe)
+
+    def test_issue_1014(self):
+        # Emulates a case where smaps file does not exist. In this case
+        # wrap_exception decorator should not raise NoSuchProcess.
+        with mock_open_exception(
+                '/proc/%s/smaps' % os.getpid(),
+                IOError(errno.ENOENT, "")) as m:
+            p = psutil.Process()
+            with self.assertRaises(IOError) as err:
+                p.memory_maps()
+            self.assertEqual(err.exception.errno, errno.ENOENT)
+            assert m.called
+
+    @unittest.skipIf(not HAS_RLIMIT, "not supported")
+    def test_rlimit_zombie(self):
+        # Emulate a case where rlimit() raises ENOSYS, which may
+        # happen in case of zombie process:
+        # https://travis-ci.org/giampaolo/psutil/jobs/51368273
+        with mock.patch("psutil._pslinux.cext.linux_prlimit",
+                        side_effect=OSError(errno.ENOSYS, "")) as m:
+            p = psutil.Process()
+            p.name()
+            with self.assertRaises(psutil.ZombieProcess) as exc:
+                p.rlimit(psutil.RLIMIT_NOFILE)
+            assert m.called
+        self.assertEqual(exc.exception.pid, p.pid)
+        self.assertEqual(exc.exception.name, p.name())
+
+    def test_cwd_zombie(self):
+        with mock.patch("psutil._pslinux.os.readlink",
+                        side_effect=OSError(errno.ENOENT, "")) as m:
+            p = psutil.Process()
+            p.name()
+            with self.assertRaises(psutil.ZombieProcess) as exc:
+                p.cwd()
+            assert m.called
+        self.assertEqual(exc.exception.pid, p.pid)
+        self.assertEqual(exc.exception.name, p.name())
+
+    def test_stat_file_parsing(self):
+        from psutil._pslinux import CLOCK_TICKS
+
+        args = [
+            "0",      # pid
+            "(cat)",  # name
+            "Z",      # status
+            "1",      # ppid
+            "0",      # pgrp
+            "0",      # session
+            "0",      # tty
+            "0",      # tpgid
+            "0",      # flags
+            "0",      # minflt
+            "0",      # cminflt
+            "0",      # majflt
+            "0",      # cmajflt
+            "2",      # utime
+            "3",      # stime
+            "4",      # cutime
+            "5",      # cstime
+            "0",      # priority
+            "0",      # nice
+            "0",      # num_threads
+            "0",      # itrealvalue
+            "6",      # starttime
+            "0",      # vsize
+            "0",      # rss
+            "0",      # rsslim
+            "0",      # startcode
+            "0",      # endcode
+            "0",      # startstack
+            "0",      # kstkesp
+            "0",      # kstkeip
+            "0",      # signal
+            "0",      # blocked
+            "0",      # sigignore
+            "0",      # sigcatch
+            "0",      # wchan
+            "0",      # nswap
+            "0",      # cnswap
+            "0",      # exit_signal
+            "6",      # processor
+        ]
+        content = " ".join(args).encode()
+        with mock_open_content('/proc/%s/stat' % os.getpid(), content):
+            p = psutil.Process()
+            self.assertEqual(p.name(), 'cat')
+            self.assertEqual(p.status(), psutil.STATUS_ZOMBIE)
+            self.assertEqual(p.ppid(), 1)
+            self.assertEqual(
+                p.create_time(), 6 / CLOCK_TICKS + psutil.boot_time())
+            cpu = p.cpu_times()
+            self.assertEqual(cpu.user, 2 / CLOCK_TICKS)
+            self.assertEqual(cpu.system, 3 / CLOCK_TICKS)
+            self.assertEqual(cpu.children_user, 4 / CLOCK_TICKS)
+            self.assertEqual(cpu.children_system, 5 / CLOCK_TICKS)
+            self.assertEqual(p.cpu_num(), 6)
+
+    def test_status_file_parsing(self):
+        with mock_open_content(
+            '/proc/%s/status' % os.getpid(),
+            textwrap.dedent("""\
+                Uid:\t1000\t1001\t1002\t1003
+                Gid:\t1004\t1005\t1006\t1007
+                Threads:\t66
+                Cpus_allowed:\tf
+                Cpus_allowed_list:\t0-7
+                voluntary_ctxt_switches:\t12
+                nonvoluntary_ctxt_switches:\t13""").encode()):
+            p = psutil.Process()
+            self.assertEqual(p.num_ctx_switches().voluntary, 12)
+            self.assertEqual(p.num_ctx_switches().involuntary, 13)
+            self.assertEqual(p.num_threads(), 66)
+            uids = p.uids()
+            self.assertEqual(uids.real, 1000)
+            self.assertEqual(uids.effective, 1001)
+            self.assertEqual(uids.saved, 1002)
+            gids = p.gids()
+            self.assertEqual(gids.real, 1004)
+            self.assertEqual(gids.effective, 1005)
+            self.assertEqual(gids.saved, 1006)
+            self.assertEqual(p._proc._get_eligible_cpus(), list(range(0, 8)))
+
+
+@unittest.skipIf(not LINUX, "LINUX only")
+class TestProcessAgainstStatus(unittest.TestCase):
+    """/proc/pid/stat and /proc/pid/status have many values in common.
+    Whenever possible, psutil uses /proc/pid/stat (it's faster).
+    For all those cases we check that the value found in
+    /proc/pid/stat (by psutil) matches the one found in
+    /proc/pid/status.
+    """
+
+    @classmethod
+    def setUpClass(cls):
+        cls.proc = psutil.Process()
+
+    def read_status_file(self, linestart):
+        with psutil._psplatform.open_text(
+                '/proc/%s/status' % self.proc.pid) as f:
+            for line in f:
+                line = line.strip()
+                if line.startswith(linestart):
+                    value = line.partition('\t')[2]
+                    try:
+                        return int(value)
+                    except ValueError:
+                        return value
+            raise ValueError("can't find %r" % linestart)
+
+    def test_name(self):
+        value = self.read_status_file("Name:")
+        self.assertEqual(self.proc.name(), value)
+
+    def test_status(self):
+        value = self.read_status_file("State:")
+        value = value[value.find('(') + 1:value.rfind(')')]
+        value = value.replace(' ', '-')
+        self.assertEqual(self.proc.status(), value)
+
+    def test_ppid(self):
+        value = self.read_status_file("PPid:")
+        self.assertEqual(self.proc.ppid(), value)
+
+    def test_num_threads(self):
+        value = self.read_status_file("Threads:")
+        self.assertEqual(self.proc.num_threads(), value)
+
+    def test_uids(self):
+        value = self.read_status_file("Uid:")
+        value = tuple(map(int, value.split()[1:4]))
+        self.assertEqual(self.proc.uids(), value)
+
+    def test_gids(self):
+        value = self.read_status_file("Gid:")
+        value = tuple(map(int, value.split()[1:4]))
+        self.assertEqual(self.proc.gids(), value)
+
+    @retry_before_failing()
+    def test_num_ctx_switches(self):
+        value = self.read_status_file("voluntary_ctxt_switches:")
+        self.assertEqual(self.proc.num_ctx_switches().voluntary, value)
+        value = self.read_status_file("nonvoluntary_ctxt_switches:")
+        self.assertEqual(self.proc.num_ctx_switches().involuntary, value)
+
+    def test_cpu_affinity(self):
+        value = self.read_status_file("Cpus_allowed_list:")
+        if '-' in str(value):
+            min_, max_ = map(int, value.split('-'))
+            self.assertEqual(
+                self.proc.cpu_affinity(), list(range(min_, max_ + 1)))
+
+    def test_cpu_affinity_eligible_cpus(self):
+        value = self.read_status_file("Cpus_allowed_list:")
+        with mock.patch("psutil._pslinux.per_cpu_times") as m:
+            self.proc._proc._get_eligible_cpus()
+        if '-' in str(value):
+            assert not m.called
+        else:
+            assert m.called
+
+
+# =====================================================================
+# --- test utils
+# =====================================================================
+
+
+@unittest.skipIf(not LINUX, "LINUX only")
+class TestUtils(unittest.TestCase):
+
+    def test_readlink(self):
+        with mock.patch("os.readlink", return_value="foo (deleted)") as m:
+            self.assertEqual(psutil._psplatform.readlink("bar"), "foo")
+            assert m.called
+
+    def test_cat(self):
+        fname = os.path.abspath(TESTFN)
+        with open(fname, "wt") as f:
+            f.write("foo ")
+        self.assertEqual(psutil._psplatform.cat(TESTFN, binary=False), "foo")
+        self.assertEqual(psutil._psplatform.cat(TESTFN, binary=True), b"foo")
+        self.assertEqual(
+            psutil._psplatform.cat(TESTFN + '??', fallback="bar"), "bar")
+
+
+if __name__ == '__main__':
+    run_test_module_by_name(__file__)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_memory_leaks.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_memory_leaks.py
new file mode 100644
index 00000000..cbe37d3e
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_memory_leaks.py
@@ -0,0 +1,610 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""
+Tests for detecting function memory leaks (typically the ones
+implemented in C). It does so by calling a function many times and
+checking whether process memory usage keeps increasing between
+calls or over time.
+Note that this may produce false positives (especially on Windows
+for some reason).
+"""
+
+from __future__ import print_function
+import errno
+import functools
+import gc
+import os
+import sys
+import threading
+import time
+
+import psutil
+import psutil._common
+from psutil import LINUX
+from psutil import MACOS
+from psutil import OPENBSD
+from psutil import POSIX
+from psutil import SUNOS
+from psutil import WINDOWS
+from psutil._compat import xrange
+from psutil.tests import create_sockets
+from psutil.tests import get_test_subprocess
+from psutil.tests import HAS_CPU_AFFINITY
+from psutil.tests import HAS_CPU_FREQ
+from psutil.tests import HAS_ENVIRON
+from psutil.tests import HAS_IONICE
+from psutil.tests import HAS_MEMORY_MAPS
+from psutil.tests import HAS_NET_IO_COUNTERS
+from psutil.tests import HAS_PROC_CPU_NUM
+from psutil.tests import HAS_PROC_IO_COUNTERS
+from psutil.tests import HAS_RLIMIT
+from psutil.tests import HAS_SENSORS_BATTERY
+from psutil.tests import HAS_SENSORS_FANS
+from psutil.tests import HAS_SENSORS_TEMPERATURES
+from psutil.tests import reap_children
+from psutil.tests import run_test_module_by_name
+from psutil.tests import safe_rmpath
+from psutil.tests import skip_on_access_denied
+from psutil.tests import TESTFN
+from psutil.tests import TRAVIS
+from psutil.tests import unittest
+
+
+LOOPS = 1000
+MEMORY_TOLERANCE = 4096
+RETRY_FOR = 3
+
+SKIP_PYTHON_IMPL = True if TRAVIS else False
+cext = psutil._psplatform.cext
+thisproc = psutil.Process()
+SKIP_PYTHON_IMPL = True if TRAVIS else False
+
+
+# ===================================================================
+# utils
+# ===================================================================
+
+
+def skip_if_linux():
+    return unittest.skipIf(LINUX and SKIP_PYTHON_IMPL,
+                           "worthless on LINUX (pure python)")
+
+
+def bytes2human(n):
+    """
+    http://code.activestate.com/recipes/578019
+    >>> bytes2human(10000)
+    '9.8K'
+    >>> bytes2human(100001221)
+    '95.4M'
+    """
+    symbols = ('K', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y')
+    prefix = {}
+    for i, s in enumerate(symbols):
+        prefix[s] = 1 << (i + 1) * 10
+    for s in reversed(symbols):
+        if n >= prefix[s]:
+            value = float(n) / prefix[s]
+            return '%.2f%s' % (value, s)
+    return "%sB" % n
+
+
+class TestMemLeak(unittest.TestCase):
+    """Base framework class which calls a function many times and
+    produces a failure if process memory usage keeps increasing
+    between calls or over time.
+    """
+    tolerance = MEMORY_TOLERANCE
+    loops = LOOPS
+    retry_for = RETRY_FOR
+
+    def setUp(self):
+        gc.collect()
+
+    def execute(self, fun, *args, **kwargs):
+        """Test a callable."""
+        def call_many_times():
+            for x in xrange(loops):
+                self._call(fun, *args, **kwargs)
+            del x
+            gc.collect()
+
+        tolerance = kwargs.pop('tolerance_', None) or self.tolerance
+        loops = kwargs.pop('loops_', None) or self.loops
+        retry_for = kwargs.pop('retry_for_', None) or self.retry_for
+
+        # warm up
+        for x in range(10):
+            self._call(fun, *args, **kwargs)
+        self.assertEqual(gc.garbage, [])
+        self.assertEqual(threading.active_count(), 1)
+        self.assertEqual(thisproc.children(), [])
+
+        # Get 2 distinct memory samples, before and after having
+        # called fun repeadetly.
+        # step 1
+        call_many_times()
+        mem1 = self._get_mem()
+        # step 2
+        call_many_times()
+        mem2 = self._get_mem()
+
+        diff1 = mem2 - mem1
+        if diff1 > tolerance:
+            # This doesn't necessarily mean we have a leak yet.
+            # At this point we assume that after having called the
+            # function so many times the memory usage is stabilized
+            # and if there are no leaks it should not increase
+            # anymore.
+            # Let's keep calling fun for 3 more seconds and fail if
+            # we notice any difference.
+            ncalls = 0
+            stop_at = time.time() + retry_for
+            while time.time() <= stop_at:
+                self._call(fun, *args, **kwargs)
+                ncalls += 1
+
+            del stop_at
+            gc.collect()
+            mem3 = self._get_mem()
+            diff2 = mem3 - mem2
+
+            if mem3 > mem2:
+                # failure
+                extra_proc_mem = bytes2human(diff1 + diff2)
+                print("exta proc mem: %s" % extra_proc_mem, file=sys.stderr)
+                msg = "+%s after %s calls, +%s after another %s calls, "
+                msg += "+%s extra proc mem"
+                msg = msg % (
+                    bytes2human(diff1), loops, bytes2human(diff2), ncalls,
+                    extra_proc_mem)
+                self.fail(msg)
+
+    def execute_w_exc(self, exc, fun, *args, **kwargs):
+        """Convenience function which tests a callable raising
+        an exception.
+        """
+        def call():
+            self.assertRaises(exc, fun, *args, **kwargs)
+
+        self.execute(call)
+
+    @staticmethod
+    def _get_mem():
+        # By using USS memory it seems it's less likely to bump
+        # into false positives.
+        if LINUX or WINDOWS or MACOS:
+            return thisproc.memory_full_info().uss
+        else:
+            return thisproc.memory_info().rss
+
+    @staticmethod
+    def _call(fun, *args, **kwargs):
+        fun(*args, **kwargs)
+
+
+# ===================================================================
+# Process class
+# ===================================================================
+
+
+class TestProcessObjectLeaks(TestMemLeak):
+    """Test leaks of Process class methods."""
+
+    proc = thisproc
+
+    def test_coverage(self):
+        skip = set((
+            "pid", "as_dict", "children", "cpu_affinity", "cpu_percent",
+            "ionice", "is_running", "kill", "memory_info_ex", "memory_percent",
+            "nice", "oneshot", "parent", "parents", "rlimit", "send_signal",
+            "suspend", "terminate", "wait"))
+        for name in dir(psutil.Process):
+            if name.startswith('_'):
+                continue
+            if name in skip:
+                continue
+            self.assertTrue(hasattr(self, "test_" + name), msg=name)
+
+    @skip_if_linux()
+    def test_name(self):
+        self.execute(self.proc.name)
+
+    @skip_if_linux()
+    def test_cmdline(self):
+        self.execute(self.proc.cmdline)
+
+    @skip_if_linux()
+    def test_exe(self):
+        self.execute(self.proc.exe)
+
+    @skip_if_linux()
+    def test_ppid(self):
+        self.execute(self.proc.ppid)
+
+    @unittest.skipIf(not POSIX, "POSIX only")
+    @skip_if_linux()
+    def test_uids(self):
+        self.execute(self.proc.uids)
+
+    @unittest.skipIf(not POSIX, "POSIX only")
+    @skip_if_linux()
+    def test_gids(self):
+        self.execute(self.proc.gids)
+
+    @skip_if_linux()
+    def test_status(self):
+        self.execute(self.proc.status)
+
+    def test_nice_get(self):
+        self.execute(self.proc.nice)
+
+    def test_nice_set(self):
+        niceness = thisproc.nice()
+        self.execute(self.proc.nice, niceness)
+
+    @unittest.skipIf(not HAS_IONICE, "not supported")
+    def test_ionice_get(self):
+        self.execute(self.proc.ionice)
+
+    @unittest.skipIf(not HAS_IONICE, "not supported")
+    def test_ionice_set(self):
+        if WINDOWS:
+            value = thisproc.ionice()
+            self.execute(self.proc.ionice, value)
+        else:
+            self.execute(self.proc.ionice, psutil.IOPRIO_CLASS_NONE)
+            fun = functools.partial(cext.proc_ioprio_set, os.getpid(), -1, 0)
+            self.execute_w_exc(OSError, fun)
+
+    @unittest.skipIf(not HAS_PROC_IO_COUNTERS, "not supported")
+    @skip_if_linux()
+    def test_io_counters(self):
+        self.execute(self.proc.io_counters)
+
+    @unittest.skipIf(POSIX, "worthless on POSIX")
+    def test_username(self):
+        self.execute(self.proc.username)
+
+    @skip_if_linux()
+    def test_create_time(self):
+        self.execute(self.proc.create_time)
+
+    @skip_if_linux()
+    @skip_on_access_denied(only_if=OPENBSD)
+    def test_num_threads(self):
+        self.execute(self.proc.num_threads)
+
+    @unittest.skipIf(not WINDOWS, "WINDOWS only")
+    def test_num_handles(self):
+        self.execute(self.proc.num_handles)
+
+    @unittest.skipIf(not POSIX, "POSIX only")
+    @skip_if_linux()
+    def test_num_fds(self):
+        self.execute(self.proc.num_fds)
+
+    @skip_if_linux()
+    def test_num_ctx_switches(self):
+        self.execute(self.proc.num_ctx_switches)
+
+    @skip_if_linux()
+    @skip_on_access_denied(only_if=OPENBSD)
+    def test_threads(self):
+        self.execute(self.proc.threads)
+
+    @skip_if_linux()
+    def test_cpu_times(self):
+        self.execute(self.proc.cpu_times)
+
+    @skip_if_linux()
+    @unittest.skipIf(not HAS_PROC_CPU_NUM, "not supported")
+    def test_cpu_num(self):
+        self.execute(self.proc.cpu_num)
+
+    @skip_if_linux()
+    def test_memory_info(self):
+        self.execute(self.proc.memory_info)
+
+    @skip_if_linux()
+    def test_memory_full_info(self):
+        self.execute(self.proc.memory_full_info)
+
+    @unittest.skipIf(not POSIX, "POSIX only")
+    @skip_if_linux()
+    def test_terminal(self):
+        self.execute(self.proc.terminal)
+
+    @unittest.skipIf(POSIX and SKIP_PYTHON_IMPL,
+                     "worthless on POSIX (pure python)")
+    def test_resume(self):
+        self.execute(self.proc.resume)
+
+    @skip_if_linux()
+    def test_cwd(self):
+        self.execute(self.proc.cwd)
+
+    @unittest.skipIf(not HAS_CPU_AFFINITY, "not supported")
+    def test_cpu_affinity_get(self):
+        self.execute(self.proc.cpu_affinity)
+
+    @unittest.skipIf(not HAS_CPU_AFFINITY, "not supported")
+    def test_cpu_affinity_set(self):
+        affinity = thisproc.cpu_affinity()
+        self.execute(self.proc.cpu_affinity, affinity)
+        if not TRAVIS:
+            self.execute_w_exc(ValueError, self.proc.cpu_affinity, [-1])
+
+    @skip_if_linux()
+    def test_open_files(self):
+        safe_rmpath(TESTFN)  # needed after UNIX socket test has run
+        with open(TESTFN, 'w'):
+            self.execute(self.proc.open_files)
+
+    @unittest.skipIf(not HAS_MEMORY_MAPS, "not supported")
+    @skip_if_linux()
+    def test_memory_maps(self):
+        self.execute(self.proc.memory_maps)
+
+    @unittest.skipIf(not LINUX, "LINUX only")
+    @unittest.skipIf(not HAS_RLIMIT, "not supported")
+    def test_rlimit_get(self):
+        self.execute(self.proc.rlimit, psutil.RLIMIT_NOFILE)
+
+    @unittest.skipIf(not LINUX, "LINUX only")
+    @unittest.skipIf(not HAS_RLIMIT, "not supported")
+    def test_rlimit_set(self):
+        limit = thisproc.rlimit(psutil.RLIMIT_NOFILE)
+        self.execute(self.proc.rlimit, psutil.RLIMIT_NOFILE, limit)
+        self.execute_w_exc(OSError, self.proc.rlimit, -1)
+
+    @skip_if_linux()
+    # Windows implementation is based on a single system-wide
+    # function (tested later).
+    @unittest.skipIf(WINDOWS, "worthless on WINDOWS")
+    def test_connections(self):
+        # TODO: UNIX sockets are temporarily implemented by parsing
+        # 'pfiles' cmd  output; we don't want that part of the code to
+        # be executed.
+        with create_sockets():
+            kind = 'inet' if SUNOS else 'all'
+            self.execute(self.proc.connections, kind)
+
+    @unittest.skipIf(not HAS_ENVIRON, "not supported")
+    def test_environ(self):
+        self.execute(self.proc.environ)
+
+    @unittest.skipIf(not WINDOWS, "WINDOWS only")
+    def test_proc_info(self):
+        self.execute(cext.proc_info, os.getpid())
+
+
+class TestProcessDualImplementation(TestMemLeak):
+
+    if WINDOWS:
+        def test_cmdline_peb_true(self):
+            self.execute(cext.proc_cmdline, os.getpid(), use_peb=True)
+
+        def test_cmdline_peb_false(self):
+            self.execute(cext.proc_cmdline, os.getpid(), use_peb=False)
+
+
+class TestTerminatedProcessLeaks(TestProcessObjectLeaks):
+    """Repeat the tests above looking for leaks occurring when dealing
+    with terminated processes raising NoSuchProcess exception.
+    The C functions are still invoked but will follow different code
+    paths. We'll check those code paths.
+    """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestTerminatedProcessLeaks, cls).setUpClass()
+        p = get_test_subprocess()
+        cls.proc = psutil.Process(p.pid)
+        cls.proc.kill()
+        cls.proc.wait()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestTerminatedProcessLeaks, cls).tearDownClass()
+        reap_children()
+
+    def _call(self, fun, *args, **kwargs):
+        try:
+            fun(*args, **kwargs)
+        except psutil.NoSuchProcess:
+            pass
+
+    if WINDOWS:
+
+        def test_kill(self):
+            self.execute(self.proc.kill)
+
+        def test_terminate(self):
+            self.execute(self.proc.terminate)
+
+        def test_suspend(self):
+            self.execute(self.proc.suspend)
+
+        def test_resume(self):
+            self.execute(self.proc.resume)
+
+        def test_wait(self):
+            self.execute(self.proc.wait)
+
+        def test_proc_info(self):
+            # test dual implementation
+            def call():
+                try:
+                    return cext.proc_info(self.proc.pid)
+                except OSError as err:
+                    if err.errno != errno.ESRCH:
+                        raise
+
+            self.execute(call)
+
+
+# ===================================================================
+# system APIs
+# ===================================================================
+
+
+class TestModuleFunctionsLeaks(TestMemLeak):
+    """Test leaks of psutil module functions."""
+
+    def test_coverage(self):
+        skip = set((
+            "version_info", "__version__", "process_iter", "wait_procs",
+            "cpu_percent", "cpu_times_percent", "cpu_count"))
+        for name in psutil.__all__:
+            if not name.islower():
+                continue
+            if name in skip:
+                continue
+            self.assertTrue(hasattr(self, "test_" + name), msg=name)
+
+    # --- cpu
+
+    @skip_if_linux()
+    def test_cpu_count_logical(self):
+        self.execute(psutil.cpu_count, logical=True)
+
+    @skip_if_linux()
+    def test_cpu_count_physical(self):
+        self.execute(psutil.cpu_count, logical=False)
+
+    @skip_if_linux()
+    def test_cpu_times(self):
+        self.execute(psutil.cpu_times)
+
+    @skip_if_linux()
+    def test_per_cpu_times(self):
+        self.execute(psutil.cpu_times, percpu=True)
+
+    def test_cpu_stats(self):
+        self.execute(psutil.cpu_stats)
+
+    @skip_if_linux()
+    @unittest.skipIf(not HAS_CPU_FREQ, "not supported")
+    def test_cpu_freq(self):
+        self.execute(psutil.cpu_freq)
+
+    # --- mem
+
+    def test_virtual_memory(self):
+        self.execute(psutil.virtual_memory)
+
+    # TODO: remove this skip when this gets fixed
+    @unittest.skipIf(SUNOS,
+                     "worthless on SUNOS (uses a subprocess)")
+    def test_swap_memory(self):
+        self.execute(psutil.swap_memory)
+
+    @unittest.skipIf(POSIX and SKIP_PYTHON_IMPL,
+                     "worthless on POSIX (pure python)")
+    def test_pid_exists(self):
+        self.execute(psutil.pid_exists, os.getpid())
+
+    # --- disk
+
+    @unittest.skipIf(POSIX and SKIP_PYTHON_IMPL,
+                     "worthless on POSIX (pure python)")
+    def test_disk_usage(self):
+        self.execute(psutil.disk_usage, '.')
+
+    def test_disk_partitions(self):
+        self.execute(psutil.disk_partitions)
+
+    @unittest.skipIf(LINUX and not os.path.exists('/proc/diskstats'),
+                     '/proc/diskstats not available on this Linux version')
+    @skip_if_linux()
+    def test_disk_io_counters(self):
+        self.execute(psutil.disk_io_counters, nowrap=False)
+
+    # --- proc
+
+    @skip_if_linux()
+    def test_pids(self):
+        self.execute(psutil.pids)
+
+    # --- net
+
+    @unittest.skipIf(TRAVIS and MACOS, "false positive on travis")
+    @skip_if_linux()
+    @unittest.skipIf(not HAS_NET_IO_COUNTERS, 'not supported')
+    def test_net_io_counters(self):
+        self.execute(psutil.net_io_counters, nowrap=False)
+
+    @unittest.skipIf(LINUX,
+                     "worthless on Linux (pure python)")
+    @unittest.skipIf(MACOS and os.getuid() != 0, "need root access")
+    def test_net_connections(self):
+        with create_sockets():
+            self.execute(psutil.net_connections)
+
+    def test_net_if_addrs(self):
+        # Note: verified that on Windows this was a false positive.
+        self.execute(psutil.net_if_addrs,
+                     tolerance_=80 * 1024 if WINDOWS else None)
+
+    @unittest.skipIf(TRAVIS, "EPERM on travis")
+    def test_net_if_stats(self):
+        self.execute(psutil.net_if_stats)
+
+    # --- sensors
+
+    @skip_if_linux()
+    @unittest.skipIf(not HAS_SENSORS_BATTERY, "not supported")
+    def test_sensors_battery(self):
+        self.execute(psutil.sensors_battery)
+
+    @skip_if_linux()
+    @unittest.skipIf(not HAS_SENSORS_TEMPERATURES, "not supported")
+    def test_sensors_temperatures(self):
+        self.execute(psutil.sensors_temperatures)
+
+    @skip_if_linux()
+    @unittest.skipIf(not HAS_SENSORS_FANS, "not supported")
+    def test_sensors_fans(self):
+        self.execute(psutil.sensors_fans)
+
+    # --- others
+
+    @skip_if_linux()
+    def test_boot_time(self):
+        self.execute(psutil.boot_time)
+
+    # XXX - on Windows this produces a false positive
+    @unittest.skipIf(WINDOWS, "XXX produces a false positive on Windows")
+    def test_users(self):
+        self.execute(psutil.users)
+
+    if WINDOWS:
+
+        # --- win services
+
+        def test_win_service_iter(self):
+            self.execute(cext.winservice_enumerate)
+
+        def test_win_service_get(self):
+            pass
+
+        def test_win_service_get_config(self):
+            name = next(psutil.win_service_iter()).name()
+            self.execute(cext.winservice_query_config, name)
+
+        def test_win_service_get_status(self):
+            name = next(psutil.win_service_iter()).name()
+            self.execute(cext.winservice_query_status, name)
+
+        def test_win_service_get_description(self):
+            name = next(psutil.win_service_iter()).name()
+            self.execute(cext.winservice_query_descr, name)
+
+
+if __name__ == '__main__':
+    run_test_module_by_name(__file__)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_misc.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_misc.py
new file mode 100644
index 00000000..04b45948
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_misc.py
@@ -0,0 +1,1057 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""
+Miscellaneous tests.
+"""
+
+import ast
+import collections
+import contextlib
+import errno
+import json
+import os
+import pickle
+import socket
+import stat
+
+from psutil import LINUX
+from psutil import POSIX
+from psutil import WINDOWS
+from psutil._common import memoize
+from psutil._common import memoize_when_activated
+from psutil._common import supports_ipv6
+from psutil._common import wrap_numbers
+from psutil._common import open_text
+from psutil._common import open_binary
+from psutil._compat import PY3
+from psutil.tests import APPVEYOR
+from psutil.tests import bind_socket
+from psutil.tests import bind_unix_socket
+from psutil.tests import call_until
+from psutil.tests import chdir
+from psutil.tests import create_proc_children_pair
+from psutil.tests import create_sockets
+from psutil.tests import create_zombie_proc
+from psutil.tests import DEVNULL
+from psutil.tests import get_free_port
+from psutil.tests import get_test_subprocess
+from psutil.tests import HAS_BATTERY
+from psutil.tests import HAS_CONNECTIONS_UNIX
+from psutil.tests import HAS_MEMORY_MAPS
+from psutil.tests import HAS_NET_IO_COUNTERS
+from psutil.tests import HAS_SENSORS_BATTERY
+from psutil.tests import HAS_SENSORS_FANS
+from psutil.tests import HAS_SENSORS_TEMPERATURES
+from psutil.tests import import_module_by_path
+from psutil.tests import is_namedtuple
+from psutil.tests import mock
+from psutil.tests import PYTHON_EXE
+from psutil.tests import reap_children
+from psutil.tests import reload_module
+from psutil.tests import retry
+from psutil.tests import ROOT_DIR
+from psutil.tests import run_test_module_by_name
+from psutil.tests import safe_mkdir
+from psutil.tests import safe_rmpath
+from psutil.tests import SCRIPTS_DIR
+from psutil.tests import sh
+from psutil.tests import tcp_socketpair
+from psutil.tests import TESTFN
+from psutil.tests import TOX
+from psutil.tests import TRAVIS
+from psutil.tests import unittest
+from psutil.tests import unix_socket_path
+from psutil.tests import unix_socketpair
+from psutil.tests import wait_for_file
+from psutil.tests import wait_for_pid
+import psutil
+import psutil.tests
+
+
+# ===================================================================
+# --- Misc / generic tests.
+# ===================================================================
+
+
+class TestMisc(unittest.TestCase):
+
+    def test_process__repr__(self, func=repr):
+        p = psutil.Process()
+        r = func(p)
+        self.assertIn("psutil.Process", r)
+        self.assertIn("pid=%s" % p.pid, r)
+        self.assertIn("name=", r)
+        self.assertIn(p.name(), r)
+        with mock.patch.object(psutil.Process, "name",
+                               side_effect=psutil.ZombieProcess(os.getpid())):
+            p = psutil.Process()
+            r = func(p)
+            self.assertIn("pid=%s" % p.pid, r)
+            self.assertIn("zombie", r)
+            self.assertNotIn("name=", r)
+        with mock.patch.object(psutil.Process, "name",
+                               side_effect=psutil.NoSuchProcess(os.getpid())):
+            p = psutil.Process()
+            r = func(p)
+            self.assertIn("pid=%s" % p.pid, r)
+            self.assertIn("terminated", r)
+            self.assertNotIn("name=", r)
+        with mock.patch.object(psutil.Process, "name",
+                               side_effect=psutil.AccessDenied(os.getpid())):
+            p = psutil.Process()
+            r = func(p)
+            self.assertIn("pid=%s" % p.pid, r)
+            self.assertNotIn("name=", r)
+
+    def test_process__str__(self):
+        self.test_process__repr__(func=str)
+
+    def test_no_such_process__repr__(self, func=repr):
+        self.assertEqual(
+            repr(psutil.NoSuchProcess(321)),
+            "psutil.NoSuchProcess process no longer exists (pid=321)")
+        self.assertEqual(
+            repr(psutil.NoSuchProcess(321, name='foo')),
+            "psutil.NoSuchProcess process no longer exists (pid=321, "
+            "name='foo')")
+        self.assertEqual(
+            repr(psutil.NoSuchProcess(321, msg='foo')),
+            "psutil.NoSuchProcess foo")
+
+    def test_zombie_process__repr__(self, func=repr):
+        self.assertEqual(
+            repr(psutil.ZombieProcess(321)),
+            "psutil.ZombieProcess process still exists but it's a zombie "
+            "(pid=321)")
+        self.assertEqual(
+            repr(psutil.ZombieProcess(321, name='foo')),
+            "psutil.ZombieProcess process still exists but it's a zombie "
+            "(pid=321, name='foo')")
+        self.assertEqual(
+            repr(psutil.ZombieProcess(321, name='foo', ppid=1)),
+            "psutil.ZombieProcess process still exists but it's a zombie "
+            "(pid=321, name='foo', ppid=1)")
+        self.assertEqual(
+            repr(psutil.ZombieProcess(321, msg='foo')),
+            "psutil.ZombieProcess foo")
+
+    def test_access_denied__repr__(self, func=repr):
+        self.assertEqual(
+            repr(psutil.AccessDenied(321)),
+            "psutil.AccessDenied (pid=321)")
+        self.assertEqual(
+            repr(psutil.AccessDenied(321, name='foo')),
+            "psutil.AccessDenied (pid=321, name='foo')")
+        self.assertEqual(
+            repr(psutil.AccessDenied(321, msg='foo')),
+            "psutil.AccessDenied foo")
+
+    def test_timeout_expired__repr__(self, func=repr):
+        self.assertEqual(
+            repr(psutil.TimeoutExpired(321)),
+            "psutil.TimeoutExpired timeout after 321 seconds")
+        self.assertEqual(
+            repr(psutil.TimeoutExpired(321, pid=111)),
+            "psutil.TimeoutExpired timeout after 321 seconds (pid=111)")
+        self.assertEqual(
+            repr(psutil.TimeoutExpired(321, pid=111, name='foo')),
+            "psutil.TimeoutExpired timeout after 321 seconds "
+            "(pid=111, name='foo')")
+
+    def test_process__eq__(self):
+        p1 = psutil.Process()
+        p2 = psutil.Process()
+        self.assertEqual(p1, p2)
+        p2._ident = (0, 0)
+        self.assertNotEqual(p1, p2)
+        self.assertNotEqual(p1, 'foo')
+
+    def test_process__hash__(self):
+        s = set([psutil.Process(), psutil.Process()])
+        self.assertEqual(len(s), 1)
+
+    def test__all__(self):
+        dir_psutil = dir(psutil)
+        for name in dir_psutil:
+            if name in ('callable', 'error', 'namedtuple', 'tests',
+                        'long', 'test', 'NUM_CPUS', 'BOOT_TIME',
+                        'TOTAL_PHYMEM'):
+                continue
+            if not name.startswith('_'):
+                try:
+                    __import__(name)
+                except ImportError:
+                    if name not in psutil.__all__:
+                        fun = getattr(psutil, name)
+                        if fun is None:
+                            continue
+                        if (fun.__doc__ is not None and
+                                'deprecated' not in fun.__doc__.lower()):
+                            self.fail('%r not in psutil.__all__' % name)
+
+        # Import 'star' will break if __all__ is inconsistent, see:
+        # https://github.com/giampaolo/psutil/issues/656
+        # Can't do `from psutil import *` as it won't work on python 3
+        # so we simply iterate over __all__.
+        for name in psutil.__all__:
+            self.assertIn(name, dir_psutil)
+
+    def test_version(self):
+        self.assertEqual('.'.join([str(x) for x in psutil.version_info]),
+                         psutil.__version__)
+
+    def test_process_as_dict_no_new_names(self):
+        # See https://github.com/giampaolo/psutil/issues/813
+        p = psutil.Process()
+        p.foo = '1'
+        self.assertNotIn('foo', p.as_dict())
+
+    def test_memoize(self):
+        @memoize
+        def foo(*args, **kwargs):
+            "foo docstring"
+            calls.append(None)
+            return (args, kwargs)
+
+        calls = []
+        # no args
+        for x in range(2):
+            ret = foo()
+            expected = ((), {})
+            self.assertEqual(ret, expected)
+            self.assertEqual(len(calls), 1)
+        # with args
+        for x in range(2):
+            ret = foo(1)
+            expected = ((1, ), {})
+            self.assertEqual(ret, expected)
+            self.assertEqual(len(calls), 2)
+        # with args + kwargs
+        for x in range(2):
+            ret = foo(1, bar=2)
+            expected = ((1, ), {'bar': 2})
+            self.assertEqual(ret, expected)
+            self.assertEqual(len(calls), 3)
+        # clear cache
+        foo.cache_clear()
+        ret = foo()
+        expected = ((), {})
+        self.assertEqual(ret, expected)
+        self.assertEqual(len(calls), 4)
+        # docstring
+        self.assertEqual(foo.__doc__, "foo docstring")
+
+    def test_memoize_when_activated(self):
+        class Foo:
+
+            @memoize_when_activated
+            def foo(self):
+                calls.append(None)
+
+        f = Foo()
+        calls = []
+        f.foo()
+        f.foo()
+        self.assertEqual(len(calls), 2)
+
+        # activate
+        calls = []
+        f.foo.cache_activate(f)
+        f.foo()
+        f.foo()
+        self.assertEqual(len(calls), 1)
+
+        # deactivate
+        calls = []
+        f.foo.cache_deactivate(f)
+        f.foo()
+        f.foo()
+        self.assertEqual(len(calls), 2)
+
+    def test_parse_environ_block(self):
+        from psutil._common import parse_environ_block
+
+        def k(s):
+            return s.upper() if WINDOWS else s
+
+        self.assertEqual(parse_environ_block("a=1\0"),
+                         {k("a"): "1"})
+        self.assertEqual(parse_environ_block("a=1\0b=2\0\0"),
+                         {k("a"): "1", k("b"): "2"})
+        self.assertEqual(parse_environ_block("a=1\0b=\0\0"),
+                         {k("a"): "1", k("b"): ""})
+        # ignore everything after \0\0
+        self.assertEqual(parse_environ_block("a=1\0b=2\0\0c=3\0"),
+                         {k("a"): "1", k("b"): "2"})
+        # ignore everything that is not an assignment
+        self.assertEqual(parse_environ_block("xxx\0a=1\0"), {k("a"): "1"})
+        self.assertEqual(parse_environ_block("a=1\0=b=2\0"), {k("a"): "1"})
+        # do not fail if the block is incomplete
+        self.assertEqual(parse_environ_block("a=1\0b=2"), {k("a"): "1"})
+
+    def test_supports_ipv6(self):
+        self.addCleanup(supports_ipv6.cache_clear)
+        if supports_ipv6():
+            with mock.patch('psutil._common.socket') as s:
+                s.has_ipv6 = False
+                supports_ipv6.cache_clear()
+                assert not supports_ipv6()
+
+            supports_ipv6.cache_clear()
+            with mock.patch('psutil._common.socket.socket',
+                            side_effect=socket.error) as s:
+                assert not supports_ipv6()
+                assert s.called
+
+            supports_ipv6.cache_clear()
+            with mock.patch('psutil._common.socket.socket',
+                            side_effect=socket.gaierror) as s:
+                assert not supports_ipv6()
+                supports_ipv6.cache_clear()
+                assert s.called
+
+            supports_ipv6.cache_clear()
+            with mock.patch('psutil._common.socket.socket.bind',
+                            side_effect=socket.gaierror) as s:
+                assert not supports_ipv6()
+                supports_ipv6.cache_clear()
+                assert s.called
+        else:
+            with self.assertRaises(Exception):
+                sock = socket.socket(socket.AF_INET6, socket.SOCK_STREAM)
+                sock.bind(("::1", 0))
+
+    def test_isfile_strict(self):
+        from psutil._common import isfile_strict
+        this_file = os.path.abspath(__file__)
+        assert isfile_strict(this_file)
+        assert not isfile_strict(os.path.dirname(this_file))
+        with mock.patch('psutil._common.os.stat',
+                        side_effect=OSError(errno.EPERM, "foo")):
+            self.assertRaises(OSError, isfile_strict, this_file)
+        with mock.patch('psutil._common.os.stat',
+                        side_effect=OSError(errno.EACCES, "foo")):
+            self.assertRaises(OSError, isfile_strict, this_file)
+        with mock.patch('psutil._common.os.stat',
+                        side_effect=OSError(errno.EINVAL, "foo")):
+            assert not isfile_strict(this_file)
+        with mock.patch('psutil._common.stat.S_ISREG', return_value=False):
+            assert not isfile_strict(this_file)
+
+    def test_serialization(self):
+        def check(ret):
+            if json is not None:
+                json.loads(json.dumps(ret))
+            a = pickle.dumps(ret)
+            b = pickle.loads(a)
+            self.assertEqual(ret, b)
+
+        check(psutil.Process().as_dict())
+        check(psutil.virtual_memory())
+        check(psutil.swap_memory())
+        check(psutil.cpu_times())
+        check(psutil.cpu_times_percent(interval=0))
+        check(psutil.net_io_counters())
+        if LINUX and not os.path.exists('/proc/diskstats'):
+            pass
+        else:
+            if not APPVEYOR:
+                check(psutil.disk_io_counters())
+        check(psutil.disk_partitions())
+        check(psutil.disk_usage(os.getcwd()))
+        check(psutil.users())
+
+    def test_setup_script(self):
+        setup_py = os.path.join(ROOT_DIR, 'setup.py')
+        if TRAVIS and not os.path.exists(setup_py):
+            return self.skipTest("can't find setup.py")
+        module = import_module_by_path(setup_py)
+        self.assertRaises(SystemExit, module.setup)
+        self.assertEqual(module.get_version(), psutil.__version__)
+
+    def test_ad_on_process_creation(self):
+        # We are supposed to be able to instantiate Process also in case
+        # of zombie processes or access denied.
+        with mock.patch.object(psutil.Process, 'create_time',
+                               side_effect=psutil.AccessDenied) as meth:
+            psutil.Process()
+            assert meth.called
+        with mock.patch.object(psutil.Process, 'create_time',
+                               side_effect=psutil.ZombieProcess(1)) as meth:
+            psutil.Process()
+            assert meth.called
+        with mock.patch.object(psutil.Process, 'create_time',
+                               side_effect=ValueError) as meth:
+            with self.assertRaises(ValueError):
+                psutil.Process()
+            assert meth.called
+
+    def test_sanity_version_check(self):
+        # see: https://github.com/giampaolo/psutil/issues/564
+        with mock.patch(
+                "psutil._psplatform.cext.version", return_value="0.0.0"):
+            with self.assertRaises(ImportError) as cm:
+                reload_module(psutil)
+            self.assertIn("version conflict", str(cm.exception).lower())
+
+
+# ===================================================================
+# --- Tests for wrap_numbers() function.
+# ===================================================================
+
+
+nt = collections.namedtuple('foo', 'a b c')
+
+
+class TestWrapNumbers(unittest.TestCase):
+
+    def setUp(self):
+        wrap_numbers.cache_clear()
+
+    tearDown = setUp
+
+    def test_first_call(self):
+        input = {'disk1': nt(5, 5, 5)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
+
+    def test_input_hasnt_changed(self):
+        input = {'disk1': nt(5, 5, 5)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
+        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
+
+    def test_increase_but_no_wrap(self):
+        input = {'disk1': nt(5, 5, 5)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
+        input = {'disk1': nt(10, 15, 20)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
+        input = {'disk1': nt(20, 25, 30)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
+        input = {'disk1': nt(20, 25, 30)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
+
+    def test_wrap(self):
+        # let's say 100 is the threshold
+        input = {'disk1': nt(100, 100, 100)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
+        # first wrap restarts from 10
+        input = {'disk1': nt(100, 100, 10)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'),
+                         {'disk1': nt(100, 100, 110)})
+        # then it remains the same
+        input = {'disk1': nt(100, 100, 10)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'),
+                         {'disk1': nt(100, 100, 110)})
+        # then it goes up
+        input = {'disk1': nt(100, 100, 90)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'),
+                         {'disk1': nt(100, 100, 190)})
+        # then it wraps again
+        input = {'disk1': nt(100, 100, 20)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'),
+                         {'disk1': nt(100, 100, 210)})
+        # and remains the same
+        input = {'disk1': nt(100, 100, 20)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'),
+                         {'disk1': nt(100, 100, 210)})
+        # now wrap another num
+        input = {'disk1': nt(50, 100, 20)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'),
+                         {'disk1': nt(150, 100, 210)})
+        # and again
+        input = {'disk1': nt(40, 100, 20)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'),
+                         {'disk1': nt(190, 100, 210)})
+        # keep it the same
+        input = {'disk1': nt(40, 100, 20)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'),
+                         {'disk1': nt(190, 100, 210)})
+
+    def test_changing_keys(self):
+        # Emulate a case where the second call to disk_io()
+        # (or whatever) provides a new disk, then the new disk
+        # disappears on the third call.
+        input = {'disk1': nt(5, 5, 5)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
+        input = {'disk1': nt(5, 5, 5),
+                 'disk2': nt(7, 7, 7)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
+        input = {'disk1': nt(8, 8, 8)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
+
+    def test_changing_keys_w_wrap(self):
+        input = {'disk1': nt(50, 50, 50),
+                 'disk2': nt(100, 100, 100)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
+        # disk 2 wraps
+        input = {'disk1': nt(50, 50, 50),
+                 'disk2': nt(100, 100, 10)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'),
+                         {'disk1': nt(50, 50, 50),
+                          'disk2': nt(100, 100, 110)})
+        # disk 2 disappears
+        input = {'disk1': nt(50, 50, 50)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
+
+        # then it appears again; the old wrap is supposed to be
+        # gone.
+        input = {'disk1': nt(50, 50, 50),
+                 'disk2': nt(100, 100, 100)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
+        # remains the same
+        input = {'disk1': nt(50, 50, 50),
+                 'disk2': nt(100, 100, 100)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
+        # and then wraps again
+        input = {'disk1': nt(50, 50, 50),
+                 'disk2': nt(100, 100, 10)}
+        self.assertEqual(wrap_numbers(input, 'disk_io'),
+                         {'disk1': nt(50, 50, 50),
+                          'disk2': nt(100, 100, 110)})
+
+    def test_real_data(self):
+        d = {'nvme0n1': (300, 508, 640, 1571, 5970, 1987, 2049, 451751, 47048),
+             'nvme0n1p1': (1171, 2, 5600256, 1024, 516, 0, 0, 0, 8),
+             'nvme0n1p2': (54, 54, 2396160, 5165056, 4, 24, 30, 1207, 28),
+             'nvme0n1p3': (2389, 4539, 5154, 150, 4828, 1844, 2019, 398, 348)}
+        self.assertEqual(wrap_numbers(d, 'disk_io'), d)
+        self.assertEqual(wrap_numbers(d, 'disk_io'), d)
+        # decrease this   ↓
+        d = {'nvme0n1': (100, 508, 640, 1571, 5970, 1987, 2049, 451751, 47048),
+             'nvme0n1p1': (1171, 2, 5600256, 1024, 516, 0, 0, 0, 8),
+             'nvme0n1p2': (54, 54, 2396160, 5165056, 4, 24, 30, 1207, 28),
+             'nvme0n1p3': (2389, 4539, 5154, 150, 4828, 1844, 2019, 398, 348)}
+        out = wrap_numbers(d, 'disk_io')
+        self.assertEqual(out['nvme0n1'][0], 400)
+
+    # --- cache tests
+
+    def test_cache_first_call(self):
+        input = {'disk1': nt(5, 5, 5)}
+        wrap_numbers(input, 'disk_io')
+        cache = wrap_numbers.cache_info()
+        self.assertEqual(cache[0], {'disk_io': input})
+        self.assertEqual(cache[1], {'disk_io': {}})
+        self.assertEqual(cache[2], {'disk_io': {}})
+
+    def test_cache_call_twice(self):
+        input = {'disk1': nt(5, 5, 5)}
+        wrap_numbers(input, 'disk_io')
+        input = {'disk1': nt(10, 10, 10)}
+        wrap_numbers(input, 'disk_io')
+        cache = wrap_numbers.cache_info()
+        self.assertEqual(cache[0], {'disk_io': input})
+        self.assertEqual(
+            cache[1],
+            {'disk_io': {('disk1', 0): 0, ('disk1', 1): 0, ('disk1', 2): 0}})
+        self.assertEqual(cache[2], {'disk_io': {}})
+
+    def test_cache_wrap(self):
+        # let's say 100 is the threshold
+        input = {'disk1': nt(100, 100, 100)}
+        wrap_numbers(input, 'disk_io')
+
+        # first wrap restarts from 10
+        input = {'disk1': nt(100, 100, 10)}
+        wrap_numbers(input, 'disk_io')
+        cache = wrap_numbers.cache_info()
+        self.assertEqual(cache[0], {'disk_io': input})
+        self.assertEqual(
+            cache[1],
+            {'disk_io': {('disk1', 0): 0, ('disk1', 1): 0, ('disk1', 2): 100}})
+        self.assertEqual(cache[2], {'disk_io': {'disk1': set([('disk1', 2)])}})
+
+        def assert_():
+            cache = wrap_numbers.cache_info()
+            self.assertEqual(
+                cache[1],
+                {'disk_io': {('disk1', 0): 0, ('disk1', 1): 0,
+                             ('disk1', 2): 100}})
+            self.assertEqual(cache[2],
+                             {'disk_io': {'disk1': set([('disk1', 2)])}})
+
+        # then it remains the same
+        input = {'disk1': nt(100, 100, 10)}
+        wrap_numbers(input, 'disk_io')
+        cache = wrap_numbers.cache_info()
+        self.assertEqual(cache[0], {'disk_io': input})
+        assert_()
+
+        # then it goes up
+        input = {'disk1': nt(100, 100, 90)}
+        wrap_numbers(input, 'disk_io')
+        cache = wrap_numbers.cache_info()
+        self.assertEqual(cache[0], {'disk_io': input})
+        assert_()
+
+        # then it wraps again
+        input = {'disk1': nt(100, 100, 20)}
+        wrap_numbers(input, 'disk_io')
+        cache = wrap_numbers.cache_info()
+        self.assertEqual(cache[0], {'disk_io': input})
+        self.assertEqual(
+            cache[1],
+            {'disk_io': {('disk1', 0): 0, ('disk1', 1): 0, ('disk1', 2): 190}})
+        self.assertEqual(cache[2], {'disk_io': {'disk1': set([('disk1', 2)])}})
+
+    def test_cache_changing_keys(self):
+        input = {'disk1': nt(5, 5, 5)}
+        wrap_numbers(input, 'disk_io')
+        input = {'disk1': nt(5, 5, 5),
+                 'disk2': nt(7, 7, 7)}
+        wrap_numbers(input, 'disk_io')
+        cache = wrap_numbers.cache_info()
+        self.assertEqual(cache[0], {'disk_io': input})
+        self.assertEqual(
+            cache[1],
+            {'disk_io': {('disk1', 0): 0, ('disk1', 1): 0, ('disk1', 2): 0}})
+        self.assertEqual(cache[2], {'disk_io': {}})
+
+    def test_cache_clear(self):
+        input = {'disk1': nt(5, 5, 5)}
+        wrap_numbers(input, 'disk_io')
+        wrap_numbers(input, 'disk_io')
+        wrap_numbers.cache_clear('disk_io')
+        self.assertEqual(wrap_numbers.cache_info(), ({}, {}, {}))
+        wrap_numbers.cache_clear('disk_io')
+        wrap_numbers.cache_clear('?!?')
+
+    @unittest.skipIf(not HAS_NET_IO_COUNTERS, 'not supported')
+    def test_cache_clear_public_apis(self):
+        if not psutil.disk_io_counters() or not psutil.net_io_counters():
+            return self.skipTest("no disks or NICs available")
+        psutil.disk_io_counters()
+        psutil.net_io_counters()
+        caches = wrap_numbers.cache_info()
+        for cache in caches:
+            self.assertIn('psutil.disk_io_counters', cache)
+            self.assertIn('psutil.net_io_counters', cache)
+
+        psutil.disk_io_counters.cache_clear()
+        caches = wrap_numbers.cache_info()
+        for cache in caches:
+            self.assertIn('psutil.net_io_counters', cache)
+            self.assertNotIn('psutil.disk_io_counters', cache)
+
+        psutil.net_io_counters.cache_clear()
+        caches = wrap_numbers.cache_info()
+        self.assertEqual(caches, ({}, {}, {}))
+
+
+# ===================================================================
+# --- Example script tests
+# ===================================================================
+
+
+@unittest.skipIf(TOX, "can't test on TOX")
+# See: https://travis-ci.org/giampaolo/psutil/jobs/295224806
+@unittest.skipIf(TRAVIS and not os.path.exists(SCRIPTS_DIR),
+                 "can't locate scripts directory")
+class TestScripts(unittest.TestCase):
+    """Tests for scripts in the "scripts" directory."""
+
+    @staticmethod
+    def assert_stdout(exe, *args, **kwargs):
+        exe = '%s' % os.path.join(SCRIPTS_DIR, exe)
+        cmd = [PYTHON_EXE, exe]
+        for arg in args:
+            cmd.append(arg)
+        try:
+            out = sh(cmd, **kwargs).strip()
+        except RuntimeError as err:
+            if 'AccessDenied' in str(err):
+                return str(err)
+            else:
+                raise
+        assert out, out
+        return out
+
+    @staticmethod
+    def assert_syntax(exe, args=None):
+        exe = os.path.join(SCRIPTS_DIR, exe)
+        if PY3:
+            f = open(exe, 'rt', encoding='utf8')
+        else:
+            f = open(exe, 'rt')
+        with f:
+            src = f.read()
+        ast.parse(src)
+
+    def test_coverage(self):
+        # make sure all example scripts have a test method defined
+        meths = dir(self)
+        for name in os.listdir(SCRIPTS_DIR):
+            if name.endswith('.py'):
+                if 'test_' + os.path.splitext(name)[0] not in meths:
+                    # self.assert_stdout(name)
+                    self.fail('no test defined for %r script'
+                              % os.path.join(SCRIPTS_DIR, name))
+
+    @unittest.skipIf(not POSIX, "POSIX only")
+    def test_executable(self):
+        for name in os.listdir(SCRIPTS_DIR):
+            if name.endswith('.py'):
+                path = os.path.join(SCRIPTS_DIR, name)
+                if not stat.S_IXUSR & os.stat(path)[stat.ST_MODE]:
+                    self.fail('%r is not executable' % path)
+
+    def test_disk_usage(self):
+        self.assert_stdout('disk_usage.py')
+
+    def test_free(self):
+        self.assert_stdout('free.py')
+
+    def test_meminfo(self):
+        self.assert_stdout('meminfo.py')
+
+    def test_procinfo(self):
+        self.assert_stdout('procinfo.py', str(os.getpid()))
+
+    # can't find users on APPVEYOR or TRAVIS
+    @unittest.skipIf(APPVEYOR or TRAVIS and not psutil.users(),
+                     "unreliable on APPVEYOR or TRAVIS")
+    def test_who(self):
+        self.assert_stdout('who.py')
+
+    def test_ps(self):
+        self.assert_stdout('ps.py')
+
+    def test_pstree(self):
+        self.assert_stdout('pstree.py')
+
+    def test_netstat(self):
+        self.assert_stdout('netstat.py')
+
+    # permission denied on travis
+    @unittest.skipIf(TRAVIS, "unreliable on TRAVIS")
+    def test_ifconfig(self):
+        self.assert_stdout('ifconfig.py')
+
+    @unittest.skipIf(not HAS_MEMORY_MAPS, "not supported")
+    def test_pmap(self):
+        self.assert_stdout('pmap.py', str(os.getpid()))
+
+    def test_procsmem(self):
+        if 'uss' not in psutil.Process().memory_full_info()._fields:
+            raise self.skipTest("not supported")
+        self.assert_stdout('procsmem.py', stderr=DEVNULL)
+
+    def test_killall(self):
+        self.assert_syntax('killall.py')
+
+    def test_nettop(self):
+        self.assert_syntax('nettop.py')
+
+    def test_top(self):
+        self.assert_syntax('top.py')
+
+    def test_iotop(self):
+        self.assert_syntax('iotop.py')
+
+    def test_pidof(self):
+        output = self.assert_stdout('pidof.py', psutil.Process().name())
+        self.assertIn(str(os.getpid()), output)
+
+    @unittest.skipIf(not WINDOWS, "WINDOWS only")
+    def test_winservices(self):
+        self.assert_stdout('winservices.py')
+
+    def test_cpu_distribution(self):
+        self.assert_syntax('cpu_distribution.py')
+
+    @unittest.skipIf(not HAS_SENSORS_TEMPERATURES, "not supported")
+    @unittest.skipIf(TRAVIS, "unreliable on TRAVIS")
+    def test_temperatures(self):
+        self.assert_stdout('temperatures.py')
+
+    @unittest.skipIf(not HAS_SENSORS_FANS, "not supported")
+    @unittest.skipIf(TRAVIS, "unreliable on TRAVIS")
+    def test_fans(self):
+        self.assert_stdout('fans.py')
+
+    @unittest.skipIf(not HAS_SENSORS_BATTERY, "not supported")
+    @unittest.skipIf(not HAS_BATTERY, "no battery")
+    def test_battery(self):
+        self.assert_stdout('battery.py')
+
+    def test_sensors(self):
+        self.assert_stdout('sensors.py')
+
+
+# ===================================================================
+# --- Unit tests for test utilities.
+# ===================================================================
+
+
+class TestRetryDecorator(unittest.TestCase):
+
+    @mock.patch('time.sleep')
+    def test_retry_success(self, sleep):
+        # Fail 3 times out of 5; make sure the decorated fun returns.
+
+        @retry(retries=5, interval=1, logfun=None)
+        def foo():
+            while queue:
+                queue.pop()
+                1 / 0
+            return 1
+
+        queue = list(range(3))
+        self.assertEqual(foo(), 1)
+        self.assertEqual(sleep.call_count, 3)
+
+    @mock.patch('time.sleep')
+    def test_retry_failure(self, sleep):
+        # Fail 6 times out of 5; th function is supposed to raise exc.
+
+        @retry(retries=5, interval=1, logfun=None)
+        def foo():
+            while queue:
+                queue.pop()
+                1 / 0
+            return 1
+
+        queue = list(range(6))
+        self.assertRaises(ZeroDivisionError, foo)
+        self.assertEqual(sleep.call_count, 5)
+
+    @mock.patch('time.sleep')
+    def test_exception_arg(self, sleep):
+        @retry(exception=ValueError, interval=1)
+        def foo():
+            raise TypeError
+
+        self.assertRaises(TypeError, foo)
+        self.assertEqual(sleep.call_count, 0)
+
+    @mock.patch('time.sleep')
+    def test_no_interval_arg(self, sleep):
+        # if interval is not specified sleep is not supposed to be called
+
+        @retry(retries=5, interval=None, logfun=None)
+        def foo():
+            1 / 0
+
+        self.assertRaises(ZeroDivisionError, foo)
+        self.assertEqual(sleep.call_count, 0)
+
+    @mock.patch('time.sleep')
+    def test_retries_arg(self, sleep):
+
+        @retry(retries=5, interval=1, logfun=None)
+        def foo():
+            1 / 0
+
+        self.assertRaises(ZeroDivisionError, foo)
+        self.assertEqual(sleep.call_count, 5)
+
+    @mock.patch('time.sleep')
+    def test_retries_and_timeout_args(self, sleep):
+        self.assertRaises(ValueError, retry, retries=5, timeout=1)
+
+
+class TestSyncTestUtils(unittest.TestCase):
+
+    def tearDown(self):
+        safe_rmpath(TESTFN)
+
+    def test_wait_for_pid(self):
+        wait_for_pid(os.getpid())
+        nopid = max(psutil.pids()) + 99999
+        with mock.patch('psutil.tests.retry.__iter__', return_value=iter([0])):
+            self.assertRaises(psutil.NoSuchProcess, wait_for_pid, nopid)
+
+    def test_wait_for_file(self):
+        with open(TESTFN, 'w') as f:
+            f.write('foo')
+        wait_for_file(TESTFN)
+        assert not os.path.exists(TESTFN)
+
+    def test_wait_for_file_empty(self):
+        with open(TESTFN, 'w'):
+            pass
+        wait_for_file(TESTFN, empty=True)
+        assert not os.path.exists(TESTFN)
+
+    def test_wait_for_file_no_file(self):
+        with mock.patch('psutil.tests.retry.__iter__', return_value=iter([0])):
+            self.assertRaises(IOError, wait_for_file, TESTFN)
+
+    def test_wait_for_file_no_delete(self):
+        with open(TESTFN, 'w') as f:
+            f.write('foo')
+        wait_for_file(TESTFN, delete=False)
+        assert os.path.exists(TESTFN)
+
+    def test_call_until(self):
+        ret = call_until(lambda: 1, "ret == 1")
+        self.assertEqual(ret, 1)
+
+
+class TestFSTestUtils(unittest.TestCase):
+
+    def setUp(self):
+        safe_rmpath(TESTFN)
+
+    tearDown = setUp
+
+    def test_open_text(self):
+        with open_text(__file__) as f:
+            self.assertEqual(f.mode, 'rt')
+
+    def test_open_binary(self):
+        with open_binary(__file__) as f:
+            self.assertEqual(f.mode, 'rb')
+
+    def test_safe_mkdir(self):
+        safe_mkdir(TESTFN)
+        assert os.path.isdir(TESTFN)
+        safe_mkdir(TESTFN)
+        assert os.path.isdir(TESTFN)
+
+    def test_safe_rmpath(self):
+        # test file is removed
+        open(TESTFN, 'w').close()
+        safe_rmpath(TESTFN)
+        assert not os.path.exists(TESTFN)
+        # test no exception if path does not exist
+        safe_rmpath(TESTFN)
+        # test dir is removed
+        os.mkdir(TESTFN)
+        safe_rmpath(TESTFN)
+        assert not os.path.exists(TESTFN)
+        # test other exceptions are raised
+        with mock.patch('psutil.tests.os.stat',
+                        side_effect=OSError(errno.EINVAL, "")) as m:
+            with self.assertRaises(OSError):
+                safe_rmpath(TESTFN)
+            assert m.called
+
+    def test_chdir(self):
+        base = os.getcwd()
+        os.mkdir(TESTFN)
+        with chdir(TESTFN):
+            self.assertEqual(os.getcwd(), os.path.join(base, TESTFN))
+        self.assertEqual(os.getcwd(), base)
+
+
+class TestProcessUtils(unittest.TestCase):
+
+    def test_reap_children(self):
+        subp = get_test_subprocess()
+        p = psutil.Process(subp.pid)
+        assert p.is_running()
+        reap_children()
+        assert not p.is_running()
+        assert not psutil.tests._pids_started
+        assert not psutil.tests._subprocesses_started
+
+    def test_create_proc_children_pair(self):
+        p1, p2 = create_proc_children_pair()
+        self.assertNotEqual(p1.pid, p2.pid)
+        assert p1.is_running()
+        assert p2.is_running()
+        children = psutil.Process().children(recursive=True)
+        self.assertEqual(len(children), 2)
+        self.assertIn(p1, children)
+        self.assertIn(p2, children)
+        self.assertEqual(p1.ppid(), os.getpid())
+        self.assertEqual(p2.ppid(), p1.pid)
+
+        # make sure both of them are cleaned up
+        reap_children()
+        assert not p1.is_running()
+        assert not p2.is_running()
+        assert not psutil.tests._pids_started
+        assert not psutil.tests._subprocesses_started
+
+    @unittest.skipIf(not POSIX, "POSIX only")
+    def test_create_zombie_proc(self):
+        zpid = create_zombie_proc()
+        self.addCleanup(reap_children, recursive=True)
+        p = psutil.Process(zpid)
+        self.assertEqual(p.status(), psutil.STATUS_ZOMBIE)
+
+
+class TestNetUtils(unittest.TestCase):
+
+    def bind_socket(self):
+        port = get_free_port()
+        with contextlib.closing(bind_socket(addr=('', port))) as s:
+            self.assertEqual(s.getsockname()[1], port)
+
+    @unittest.skipIf(not POSIX, "POSIX only")
+    def test_bind_unix_socket(self):
+        with unix_socket_path() as name:
+            sock = bind_unix_socket(name)
+            with contextlib.closing(sock):
+                self.assertEqual(sock.family, socket.AF_UNIX)
+                self.assertEqual(sock.type, socket.SOCK_STREAM)
+                self.assertEqual(sock.getsockname(), name)
+                assert os.path.exists(name)
+                assert stat.S_ISSOCK(os.stat(name).st_mode)
+        # UDP
+        with unix_socket_path() as name:
+            sock = bind_unix_socket(name, type=socket.SOCK_DGRAM)
+            with contextlib.closing(sock):
+                self.assertEqual(sock.type, socket.SOCK_DGRAM)
+
+    def tcp_tcp_socketpair(self):
+        addr = ("127.0.0.1", get_free_port())
+        server, client = tcp_socketpair(socket.AF_INET, addr=addr)
+        with contextlib.closing(server):
+            with contextlib.closing(client):
+                # Ensure they are connected and the positions are
+                # correct.
+                self.assertEqual(server.getsockname(), addr)
+                self.assertEqual(client.getpeername(), addr)
+                self.assertNotEqual(client.getsockname(), addr)
+
+    @unittest.skipIf(not POSIX, "POSIX only")
+    def test_unix_socketpair(self):
+        p = psutil.Process()
+        num_fds = p.num_fds()
+        assert not p.connections(kind='unix')
+        with unix_socket_path() as name:
+            server, client = unix_socketpair(name)
+            try:
+                assert os.path.exists(name)
+                assert stat.S_ISSOCK(os.stat(name).st_mode)
+                self.assertEqual(p.num_fds() - num_fds, 2)
+                self.assertEqual(len(p.connections(kind='unix')), 2)
+                self.assertEqual(server.getsockname(), name)
+                self.assertEqual(client.getpeername(), name)
+            finally:
+                client.close()
+                server.close()
+
+    def test_create_sockets(self):
+        with create_sockets() as socks:
+            fams = collections.defaultdict(int)
+            types = collections.defaultdict(int)
+            for s in socks:
+                fams[s.family] += 1
+                # work around http://bugs.python.org/issue30204
+                types[s.getsockopt(socket.SOL_SOCKET, socket.SO_TYPE)] += 1
+            self.assertGreaterEqual(fams[socket.AF_INET], 2)
+            if supports_ipv6():
+                self.assertGreaterEqual(fams[socket.AF_INET6], 2)
+            if POSIX and HAS_CONNECTIONS_UNIX:
+                self.assertGreaterEqual(fams[socket.AF_UNIX], 2)
+            self.assertGreaterEqual(types[socket.SOCK_STREAM], 2)
+            self.assertGreaterEqual(types[socket.SOCK_DGRAM], 2)
+
+
+class TestOtherUtils(unittest.TestCase):
+
+    def test_is_namedtuple(self):
+        assert is_namedtuple(collections.namedtuple('foo', 'a b c')(1, 2, 3))
+        assert not is_namedtuple(tuple())
+
+
+if __name__ == '__main__':
+    run_test_module_by_name(__file__)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_osx.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_osx.py
new file mode 100644
index 00000000..40257190
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_osx.py
@@ -0,0 +1,294 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""MACOS specific tests."""
+
+import os
+import re
+import time
+
+import psutil
+from psutil import MACOS
+from psutil.tests import create_zombie_proc
+from psutil.tests import get_test_subprocess
+from psutil.tests import HAS_BATTERY
+from psutil.tests import MEMORY_TOLERANCE
+from psutil.tests import reap_children
+from psutil.tests import retry_before_failing
+from psutil.tests import run_test_module_by_name
+from psutil.tests import sh
+from psutil.tests import unittest
+
+
+PAGESIZE = os.sysconf("SC_PAGE_SIZE") if MACOS else None
+
+
+def sysctl(cmdline):
+    """Expects a sysctl command with an argument and parse the result
+    returning only the value of interest.
+    """
+    out = sh(cmdline)
+    result = out.split()[1]
+    try:
+        return int(result)
+    except ValueError:
+        return result
+
+
+def vm_stat(field):
+    """Wrapper around 'vm_stat' cmdline utility."""
+    out = sh('vm_stat')
+    for line in out.split('\n'):
+        if field in line:
+            break
+    else:
+        raise ValueError("line not found")
+    return int(re.search(r'\d+', line).group(0)) * PAGESIZE
+
+
+# http://code.activestate.com/recipes/578019/
+def human2bytes(s):
+    SYMBOLS = {
+        'customary': ('B', 'K', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y'),
+    }
+    init = s
+    num = ""
+    while s and s[0:1].isdigit() or s[0:1] == '.':
+        num += s[0]
+        s = s[1:]
+    num = float(num)
+    letter = s.strip()
+    for name, sset in SYMBOLS.items():
+        if letter in sset:
+            break
+    else:
+        if letter == 'k':
+            sset = SYMBOLS['customary']
+            letter = letter.upper()
+        else:
+            raise ValueError("can't interpret %r" % init)
+    prefix = {sset[0]: 1}
+    for i, s in enumerate(sset[1:]):
+        prefix[s] = 1 << (i + 1) * 10
+    return int(num * prefix[letter])
+
+
+@unittest.skipIf(not MACOS, "MACOS only")
+class TestProcess(unittest.TestCase):
+
+    @classmethod
+    def setUpClass(cls):
+        cls.pid = get_test_subprocess().pid
+
+    @classmethod
+    def tearDownClass(cls):
+        reap_children()
+
+    def test_process_create_time(self):
+        output = sh("ps -o lstart -p %s" % self.pid)
+        start_ps = output.replace('STARTED', '').strip()
+        hhmmss = start_ps.split(' ')[-2]
+        year = start_ps.split(' ')[-1]
+        start_psutil = psutil.Process(self.pid).create_time()
+        self.assertEqual(
+            hhmmss,
+            time.strftime("%H:%M:%S", time.localtime(start_psutil)))
+        self.assertEqual(
+            year,
+            time.strftime("%Y", time.localtime(start_psutil)))
+
+
+@unittest.skipIf(not MACOS, "MACOS only")
+class TestZombieProcessAPIs(unittest.TestCase):
+
+    @classmethod
+    def setUpClass(cls):
+        zpid = create_zombie_proc()
+        cls.p = psutil.Process(zpid)
+
+    @classmethod
+    def tearDownClass(cls):
+        reap_children(recursive=True)
+
+    def test_pidtask_info(self):
+        self.assertEqual(self.p.status(), psutil.STATUS_ZOMBIE)
+        self.p.ppid()
+        self.p.uids()
+        self.p.gids()
+        self.p.terminal()
+        self.p.create_time()
+
+    def test_exe(self):
+        self.assertRaises(psutil.ZombieProcess, self.p.exe)
+
+    def test_cmdline(self):
+        self.assertRaises(psutil.ZombieProcess, self.p.cmdline)
+
+    def test_environ(self):
+        self.assertRaises(psutil.ZombieProcess, self.p.environ)
+
+    def test_cwd(self):
+        self.assertRaises(psutil.ZombieProcess, self.p.cwd)
+
+    def test_memory_full_info(self):
+        self.assertRaises(psutil.ZombieProcess, self.p.memory_full_info)
+
+    def test_cpu_times(self):
+        self.assertRaises(psutil.ZombieProcess, self.p.cpu_times)
+
+    def test_num_ctx_switches(self):
+        self.assertRaises(psutil.ZombieProcess, self.p.num_ctx_switches)
+
+    def test_num_threads(self):
+        self.assertRaises(psutil.ZombieProcess, self.p.num_threads)
+
+    def test_open_files(self):
+        self.assertRaises(psutil.ZombieProcess, self.p.open_files)
+
+    def test_connections(self):
+        self.assertRaises(psutil.ZombieProcess, self.p.connections)
+
+    def test_num_fds(self):
+        self.assertRaises(psutil.ZombieProcess, self.p.num_fds)
+
+    def test_threads(self):
+        self.assertRaises((psutil.ZombieProcess, psutil.AccessDenied),
+                          self.p.threads)
+
+
+@unittest.skipIf(not MACOS, "MACOS only")
+class TestSystemAPIs(unittest.TestCase):
+
+    # --- disk
+
+    def test_disks(self):
+        # test psutil.disk_usage() and psutil.disk_partitions()
+        # against "df -a"
+        def df(path):
+            out = sh('df -k "%s"' % path).strip()
+            lines = out.split('\n')
+            lines.pop(0)
+            line = lines.pop(0)
+            dev, total, used, free = line.split()[:4]
+            if dev == 'none':
+                dev = ''
+            total = int(total) * 1024
+            used = int(used) * 1024
+            free = int(free) * 1024
+            return dev, total, used, free
+
+        for part in psutil.disk_partitions(all=False):
+            usage = psutil.disk_usage(part.mountpoint)
+            dev, total, used, free = df(part.mountpoint)
+            self.assertEqual(part.device, dev)
+            self.assertEqual(usage.total, total)
+            # 10 MB tollerance
+            if abs(usage.free - free) > 10 * 1024 * 1024:
+                self.fail("psutil=%s, df=%s" % usage.free, free)
+            if abs(usage.used - used) > 10 * 1024 * 1024:
+                self.fail("psutil=%s, df=%s" % usage.used, used)
+
+    # --- cpu
+
+    def test_cpu_count_logical(self):
+        num = sysctl("sysctl hw.logicalcpu")
+        self.assertEqual(num, psutil.cpu_count(logical=True))
+
+    def test_cpu_count_physical(self):
+        num = sysctl("sysctl hw.physicalcpu")
+        self.assertEqual(num, psutil.cpu_count(logical=False))
+
+    def test_cpu_freq(self):
+        freq = psutil.cpu_freq()
+        self.assertEqual(
+            freq.current * 1000 * 1000, sysctl("sysctl hw.cpufrequency"))
+        self.assertEqual(
+            freq.min * 1000 * 1000, sysctl("sysctl hw.cpufrequency_min"))
+        self.assertEqual(
+            freq.max * 1000 * 1000, sysctl("sysctl hw.cpufrequency_max"))
+
+    # --- virtual mem
+
+    def test_vmem_total(self):
+        sysctl_hwphymem = sysctl('sysctl hw.memsize')
+        self.assertEqual(sysctl_hwphymem, psutil.virtual_memory().total)
+
+    @retry_before_failing()
+    def test_vmem_free(self):
+        vmstat_val = vm_stat("free")
+        psutil_val = psutil.virtual_memory().free
+        self.assertAlmostEqual(psutil_val, vmstat_val, delta=MEMORY_TOLERANCE)
+
+    @retry_before_failing()
+    def test_vmem_active(self):
+        vmstat_val = vm_stat("active")
+        psutil_val = psutil.virtual_memory().active
+        self.assertAlmostEqual(psutil_val, vmstat_val, delta=MEMORY_TOLERANCE)
+
+    @retry_before_failing()
+    def test_vmem_inactive(self):
+        vmstat_val = vm_stat("inactive")
+        psutil_val = psutil.virtual_memory().inactive
+        self.assertAlmostEqual(psutil_val, vmstat_val, delta=MEMORY_TOLERANCE)
+
+    @retry_before_failing()
+    def test_vmem_wired(self):
+        vmstat_val = vm_stat("wired")
+        psutil_val = psutil.virtual_memory().wired
+        self.assertAlmostEqual(psutil_val, vmstat_val, delta=MEMORY_TOLERANCE)
+
+    # --- swap mem
+
+    @retry_before_failing()
+    def test_swapmem_sin(self):
+        vmstat_val = vm_stat("Pageins")
+        psutil_val = psutil.swap_memory().sin
+        self.assertEqual(psutil_val, vmstat_val)
+
+    @retry_before_failing()
+    def test_swapmem_sout(self):
+        vmstat_val = vm_stat("Pageout")
+        psutil_val = psutil.swap_memory().sout
+        self.assertEqual(psutil_val, vmstat_val)
+
+    # Not very reliable.
+    # def test_swapmem_total(self):
+    #     out = sh('sysctl vm.swapusage')
+    #     out = out.replace('vm.swapusage: ', '')
+    #     total, used, free = re.findall('\d+.\d+\w', out)
+    #     psutil_smem = psutil.swap_memory()
+    #     self.assertEqual(psutil_smem.total, human2bytes(total))
+    #     self.assertEqual(psutil_smem.used, human2bytes(used))
+    #     self.assertEqual(psutil_smem.free, human2bytes(free))
+
+    # --- network
+
+    def test_net_if_stats(self):
+        for name, stats in psutil.net_if_stats().items():
+            try:
+                out = sh("ifconfig %s" % name)
+            except RuntimeError:
+                pass
+            else:
+                self.assertEqual(stats.isup, 'RUNNING' in out, msg=out)
+                self.assertEqual(stats.mtu,
+                                 int(re.findall(r'mtu (\d+)', out)[0]))
+
+    # --- sensors_battery
+
+    @unittest.skipIf(not HAS_BATTERY, "no battery")
+    def test_sensors_battery(self):
+        out = sh("pmset -g batt")
+        percent = re.search(r"(\d+)%", out).group(1)
+        drawing_from = re.search("Now drawing from '([^']+)'", out).group(1)
+        power_plugged = drawing_from == "AC Power"
+        psutil_result = psutil.sensors_battery()
+        self.assertEqual(psutil_result.power_plugged, power_plugged)
+        self.assertEqual(psutil_result.percent, int(percent))
+
+
+if __name__ == '__main__':
+    run_test_module_by_name(__file__)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_posix.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_posix.py
new file mode 100644
index 00000000..79931283
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_posix.py
@@ -0,0 +1,440 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""POSIX specific tests."""
+
+import datetime
+import errno
+import os
+import re
+import subprocess
+import time
+
+import psutil
+from psutil import AIX
+from psutil import BSD
+from psutil import LINUX
+from psutil import MACOS
+from psutil import OPENBSD
+from psutil import POSIX
+from psutil import SUNOS
+from psutil.tests import APPVEYOR
+from psutil.tests import get_kernel_version
+from psutil.tests import get_test_subprocess
+from psutil.tests import HAS_NET_IO_COUNTERS
+from psutil.tests import mock
+from psutil.tests import PYTHON_EXE
+from psutil.tests import reap_children
+from psutil.tests import retry_before_failing
+from psutil.tests import run_test_module_by_name
+from psutil.tests import sh
+from psutil.tests import skip_on_access_denied
+from psutil.tests import TRAVIS
+from psutil.tests import unittest
+from psutil.tests import wait_for_pid
+from psutil.tests import which
+
+
+def ps(fmt, pid=None):
+    """
+    Wrapper for calling the ps command with a little bit of cross-platform
+    support for a narrow range of features.
+    """
+
+    cmd = ['ps']
+
+    if LINUX:
+        cmd.append('--no-headers')
+
+    if pid is not None:
+        cmd.extend(['-p', str(pid)])
+    else:
+        if SUNOS:
+            cmd.append('-A')
+        else:
+            cmd.append('ax')
+
+    if SUNOS:
+        fmt_map = {'command', 'comm',
+                   'start', 'stime'}
+        fmt = fmt_map.get(fmt, fmt)
+
+    cmd.extend(['-o', fmt])
+
+    output = sh(cmd)
+
+    if LINUX:
+        output = output.splitlines()
+    else:
+        output = output.splitlines()[1:]
+
+    all_output = []
+    for line in output:
+        line = line.strip()
+
+        try:
+            line = int(line)
+        except ValueError:
+            pass
+
+        all_output.append(line)
+
+    if pid is None:
+        return all_output
+    else:
+        return all_output[0]
+
+# ps "-o" field names differ wildly between platforms.
+# "comm" means "only executable name" but is not available on BSD platforms.
+# "args" means "command with all its arguments", and is also not available
+# on BSD platforms.
+# "command" is like "args" on most platforms, but like "comm" on AIX,
+# and not available on SUNOS.
+# so for the executable name we can use "comm" on Solaris and split "command"
+# on other platforms.
+# to get the cmdline (with args) we have to use "args" on AIX and
+# Solaris, and can use "command" on all others.
+
+
+def ps_name(pid):
+    field = "command"
+    if SUNOS:
+        field = "comm"
+    return ps(field, pid).split()[0]
+
+
+def ps_args(pid):
+    field = "command"
+    if AIX or SUNOS:
+        field = "args"
+    return ps(field, pid)
+
+
+@unittest.skipIf(not POSIX, "POSIX only")
+class TestProcess(unittest.TestCase):
+    """Compare psutil results against 'ps' command line utility (mainly)."""
+
+    @classmethod
+    def setUpClass(cls):
+        cls.pid = get_test_subprocess([PYTHON_EXE, "-E", "-O"],
+                                      stdin=subprocess.PIPE).pid
+        wait_for_pid(cls.pid)
+
+    @classmethod
+    def tearDownClass(cls):
+        reap_children()
+
+    def test_ppid(self):
+        ppid_ps = ps('ppid', self.pid)
+        ppid_psutil = psutil.Process(self.pid).ppid()
+        self.assertEqual(ppid_ps, ppid_psutil)
+
+    def test_uid(self):
+        uid_ps = ps('uid', self.pid)
+        uid_psutil = psutil.Process(self.pid).uids().real
+        self.assertEqual(uid_ps, uid_psutil)
+
+    def test_gid(self):
+        gid_ps = ps('rgid', self.pid)
+        gid_psutil = psutil.Process(self.pid).gids().real
+        self.assertEqual(gid_ps, gid_psutil)
+
+    def test_username(self):
+        username_ps = ps('user', self.pid)
+        username_psutil = psutil.Process(self.pid).username()
+        self.assertEqual(username_ps, username_psutil)
+
+    def test_username_no_resolution(self):
+        # Emulate a case where the system can't resolve the uid to
+        # a username in which case psutil is supposed to return
+        # the stringified uid.
+        p = psutil.Process()
+        with mock.patch("psutil.pwd.getpwuid", side_effect=KeyError) as fun:
+            self.assertEqual(p.username(), str(p.uids().real))
+            assert fun.called
+
+    @skip_on_access_denied()
+    @retry_before_failing()
+    def test_rss_memory(self):
+        # give python interpreter some time to properly initialize
+        # so that the results are the same
+        time.sleep(0.1)
+        rss_ps = ps('rss', self.pid)
+        rss_psutil = psutil.Process(self.pid).memory_info()[0] / 1024
+        self.assertEqual(rss_ps, rss_psutil)
+
+    @skip_on_access_denied()
+    @retry_before_failing()
+    def test_vsz_memory(self):
+        # give python interpreter some time to properly initialize
+        # so that the results are the same
+        time.sleep(0.1)
+        vsz_ps = ps('vsz', self.pid)
+        vsz_psutil = psutil.Process(self.pid).memory_info()[1] / 1024
+        self.assertEqual(vsz_ps, vsz_psutil)
+
+    def test_name(self):
+        name_ps = ps_name(self.pid)
+        # remove path if there is any, from the command
+        name_ps = os.path.basename(name_ps).lower()
+        name_psutil = psutil.Process(self.pid).name().lower()
+        # ...because of how we calculate PYTHON_EXE; on MACOS this may
+        # be "pythonX.Y".
+        name_ps = re.sub(r"\d.\d", "", name_ps)
+        name_psutil = re.sub(r"\d.\d", "", name_psutil)
+        # ...may also be "python.X"
+        name_ps = re.sub(r"\d", "", name_ps)
+        name_psutil = re.sub(r"\d", "", name_psutil)
+        self.assertEqual(name_ps, name_psutil)
+
+    def test_name_long(self):
+        # On UNIX the kernel truncates the name to the first 15
+        # characters. In such a case psutil tries to determine the
+        # full name from the cmdline.
+        name = "long-program-name"
+        cmdline = ["long-program-name-extended", "foo", "bar"]
+        with mock.patch("psutil._psplatform.Process.name",
+                        return_value=name):
+            with mock.patch("psutil._psplatform.Process.cmdline",
+                            return_value=cmdline):
+                p = psutil.Process()
+                self.assertEqual(p.name(), "long-program-name-extended")
+
+    def test_name_long_cmdline_ad_exc(self):
+        # Same as above but emulates a case where cmdline() raises
+        # AccessDenied in which case psutil is supposed to return
+        # the truncated name instead of crashing.
+        name = "long-program-name"
+        with mock.patch("psutil._psplatform.Process.name",
+                        return_value=name):
+            with mock.patch("psutil._psplatform.Process.cmdline",
+                            side_effect=psutil.AccessDenied(0, "")):
+                p = psutil.Process()
+                self.assertEqual(p.name(), "long-program-name")
+
+    def test_name_long_cmdline_nsp_exc(self):
+        # Same as above but emulates a case where cmdline() raises NSP
+        # which is supposed to propagate.
+        name = "long-program-name"
+        with mock.patch("psutil._psplatform.Process.name",
+                        return_value=name):
+            with mock.patch("psutil._psplatform.Process.cmdline",
+                            side_effect=psutil.NoSuchProcess(0, "")):
+                p = psutil.Process()
+                self.assertRaises(psutil.NoSuchProcess, p.name)
+
+    @unittest.skipIf(MACOS or BSD, 'ps -o start not available')
+    def test_create_time(self):
+        time_ps = ps('start', self.pid)
+        time_psutil = psutil.Process(self.pid).create_time()
+        time_psutil_tstamp = datetime.datetime.fromtimestamp(
+            time_psutil).strftime("%H:%M:%S")
+        # sometimes ps shows the time rounded up instead of down, so we check
+        # for both possible values
+        round_time_psutil = round(time_psutil)
+        round_time_psutil_tstamp = datetime.datetime.fromtimestamp(
+            round_time_psutil).strftime("%H:%M:%S")
+        self.assertIn(time_ps, [time_psutil_tstamp, round_time_psutil_tstamp])
+
+    def test_exe(self):
+        ps_pathname = ps_name(self.pid)
+        psutil_pathname = psutil.Process(self.pid).exe()
+        try:
+            self.assertEqual(ps_pathname, psutil_pathname)
+        except AssertionError:
+            # certain platforms such as BSD are more accurate returning:
+            # "/usr/local/bin/python2.7"
+            # ...instead of:
+            # "/usr/local/bin/python"
+            # We do not want to consider this difference in accuracy
+            # an error.
+            adjusted_ps_pathname = ps_pathname[:len(ps_pathname)]
+            self.assertEqual(ps_pathname, adjusted_ps_pathname)
+
+    def test_cmdline(self):
+        ps_cmdline = ps_args(self.pid)
+        psutil_cmdline = " ".join(psutil.Process(self.pid).cmdline())
+        self.assertEqual(ps_cmdline, psutil_cmdline)
+
+    # On SUNOS "ps" reads niceness /proc/pid/psinfo which returns an
+    # incorrect value (20); the real deal is getpriority(2) which
+    # returns 0; psutil relies on it, see:
+    # https://github.com/giampaolo/psutil/issues/1082
+    # AIX has the same issue
+    @unittest.skipIf(SUNOS, "not reliable on SUNOS")
+    @unittest.skipIf(AIX, "not reliable on AIX")
+    def test_nice(self):
+        ps_nice = ps('nice', self.pid)
+        psutil_nice = psutil.Process().nice()
+        self.assertEqual(ps_nice, psutil_nice)
+
+    def test_num_fds(self):
+        # Note: this fails from time to time; I'm keen on thinking
+        # it doesn't mean something is broken
+        def call(p, attr):
+            args = ()
+            attr = getattr(p, name, None)
+            if attr is not None and callable(attr):
+                if name == 'rlimit':
+                    args = (psutil.RLIMIT_NOFILE,)
+                attr(*args)
+            else:
+                attr
+
+        p = psutil.Process(os.getpid())
+        failures = []
+        ignored_names = ['terminate', 'kill', 'suspend', 'resume', 'nice',
+                         'send_signal', 'wait', 'children', 'as_dict',
+                         'memory_info_ex', 'parent', 'parents']
+        if LINUX and get_kernel_version() < (2, 6, 36):
+            ignored_names.append('rlimit')
+        if LINUX and get_kernel_version() < (2, 6, 23):
+            ignored_names.append('num_ctx_switches')
+        for name in dir(psutil.Process):
+            if (name.startswith('_') or name in ignored_names):
+                continue
+            else:
+                try:
+                    num1 = p.num_fds()
+                    for x in range(2):
+                        call(p, name)
+                    num2 = p.num_fds()
+                except psutil.AccessDenied:
+                    pass
+                else:
+                    if abs(num2 - num1) > 1:
+                        fail = "failure while processing Process.%s method " \
+                               "(before=%s, after=%s)" % (name, num1, num2)
+                        failures.append(fail)
+        if failures:
+            self.fail('\n' + '\n'.join(failures))
+
+
+@unittest.skipIf(not POSIX, "POSIX only")
+class TestSystemAPIs(unittest.TestCase):
+    """Test some system APIs."""
+
+    @retry_before_failing()
+    def test_pids(self):
+        # Note: this test might fail if the OS is starting/killing
+        # other processes in the meantime
+        pids_ps = sorted(ps("pid"))
+        pids_psutil = psutil.pids()
+
+        # on MACOS and OPENBSD ps doesn't show pid 0
+        if MACOS or OPENBSD and 0 not in pids_ps:
+            pids_ps.insert(0, 0)
+
+        # There will often be one more process in pids_ps for ps itself
+        if len(pids_ps) - len(pids_psutil) > 1:
+            difference = [x for x in pids_psutil if x not in pids_ps] + \
+                         [x for x in pids_ps if x not in pids_psutil]
+            self.fail("difference: " + str(difference))
+
+    # for some reason ifconfig -a does not report all interfaces
+    # returned by psutil
+    @unittest.skipIf(SUNOS, "unreliable on SUNOS")
+    @unittest.skipIf(TRAVIS, "unreliable on TRAVIS")
+    @unittest.skipIf(not which('ifconfig'), "no ifconfig cmd")
+    @unittest.skipIf(not HAS_NET_IO_COUNTERS, "not supported")
+    def test_nic_names(self):
+        output = sh("ifconfig -a")
+        for nic in psutil.net_io_counters(pernic=True).keys():
+            for line in output.split():
+                if line.startswith(nic):
+                    break
+            else:
+                self.fail(
+                    "couldn't find %s nic in 'ifconfig -a' output\n%s" % (
+                        nic, output))
+
+    # can't find users on APPVEYOR or TRAVIS
+    @unittest.skipIf(APPVEYOR or TRAVIS and not psutil.users(),
+                     "unreliable on APPVEYOR or TRAVIS")
+    @retry_before_failing()
+    def test_users(self):
+        out = sh("who")
+        lines = out.split('\n')
+        users = [x.split()[0] for x in lines]
+        terminals = [x.split()[1] for x in lines]
+        self.assertEqual(len(users), len(psutil.users()))
+        for u in psutil.users():
+            self.assertIn(u.name, users)
+            self.assertIn(u.terminal, terminals)
+
+    def test_pid_exists_let_raise(self):
+        # According to "man 2 kill" possible error values for kill
+        # are (EINVAL, EPERM, ESRCH). Test that any other errno
+        # results in an exception.
+        with mock.patch("psutil._psposix.os.kill",
+                        side_effect=OSError(errno.EBADF, "")) as m:
+            self.assertRaises(OSError, psutil._psposix.pid_exists, os.getpid())
+            assert m.called
+
+    def test_os_waitpid_let_raise(self):
+        # os.waitpid() is supposed to catch EINTR and ECHILD only.
+        # Test that any other errno results in an exception.
+        with mock.patch("psutil._psposix.os.waitpid",
+                        side_effect=OSError(errno.EBADF, "")) as m:
+            self.assertRaises(OSError, psutil._psposix.wait_pid, os.getpid())
+            assert m.called
+
+    def test_os_waitpid_eintr(self):
+        # os.waitpid() is supposed to "retry" on EINTR.
+        with mock.patch("psutil._psposix.os.waitpid",
+                        side_effect=OSError(errno.EINTR, "")) as m:
+            self.assertRaises(
+                psutil._psposix.TimeoutExpired,
+                psutil._psposix.wait_pid, os.getpid(), timeout=0.01)
+            assert m.called
+
+    def test_os_waitpid_bad_ret_status(self):
+        # Simulate os.waitpid() returning a bad status.
+        with mock.patch("psutil._psposix.os.waitpid",
+                        return_value=(1, -1)) as m:
+            self.assertRaises(ValueError,
+                              psutil._psposix.wait_pid, os.getpid())
+            assert m.called
+
+    # AIX can return '-' in df output instead of numbers, e.g. for /proc
+    @unittest.skipIf(AIX, "unreliable on AIX")
+    def test_disk_usage(self):
+        def df(device):
+            out = sh("df -k %s" % device).strip()
+            line = out.split('\n')[1]
+            fields = line.split()
+            total = int(fields[1]) * 1024
+            used = int(fields[2]) * 1024
+            free = int(fields[3]) * 1024
+            percent = float(fields[4].replace('%', ''))
+            return (total, used, free, percent)
+
+        tolerance = 4 * 1024 * 1024  # 4MB
+        for part in psutil.disk_partitions(all=False):
+            usage = psutil.disk_usage(part.mountpoint)
+            try:
+                total, used, free, percent = df(part.device)
+            except RuntimeError as err:
+                # see:
+                # https://travis-ci.org/giampaolo/psutil/jobs/138338464
+                # https://travis-ci.org/giampaolo/psutil/jobs/138343361
+                err = str(err).lower()
+                if "no such file or directory" in err or \
+                        "raw devices not supported" in err or \
+                        "permission denied" in err:
+                    continue
+                else:
+                    raise
+            else:
+                self.assertAlmostEqual(usage.total, total, delta=tolerance)
+                self.assertAlmostEqual(usage.used, used, delta=tolerance)
+                self.assertAlmostEqual(usage.free, free, delta=tolerance)
+                self.assertAlmostEqual(usage.percent, percent, delta=1)
+
+
+if __name__ == '__main__':
+    run_test_module_by_name(__file__)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_process.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_process.py
new file mode 100644
index 00000000..2af676ba
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_process.py
@@ -0,0 +1,1611 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Tests for psutil.Process class."""
+
+import collections
+import errno
+import getpass
+import itertools
+import os
+import signal
+import socket
+import subprocess
+import sys
+import tempfile
+import textwrap
+import time
+import types
+
+import psutil
+
+from psutil import AIX
+from psutil import BSD
+from psutil import LINUX
+from psutil import MACOS
+from psutil import NETBSD
+from psutil import OPENBSD
+from psutil import OSX
+from psutil import POSIX
+from psutil import SUNOS
+from psutil import WINDOWS
+from psutil._common import open_text
+from psutil._compat import long
+from psutil._compat import PY3
+from psutil.tests import APPVEYOR
+from psutil.tests import call_until
+from psutil.tests import copyload_shared_lib
+from psutil.tests import create_exe
+from psutil.tests import create_proc_children_pair
+from psutil.tests import create_zombie_proc
+from psutil.tests import enum
+from psutil.tests import get_test_subprocess
+from psutil.tests import get_winver
+from psutil.tests import HAS_CPU_AFFINITY
+from psutil.tests import HAS_ENVIRON
+from psutil.tests import HAS_IONICE
+from psutil.tests import HAS_MEMORY_MAPS
+from psutil.tests import HAS_PROC_CPU_NUM
+from psutil.tests import HAS_PROC_IO_COUNTERS
+from psutil.tests import HAS_RLIMIT
+from psutil.tests import HAS_THREADS
+from psutil.tests import mock
+from psutil.tests import PYPY
+from psutil.tests import PYTHON_EXE
+from psutil.tests import reap_children
+from psutil.tests import retry_before_failing
+from psutil.tests import run_test_module_by_name
+from psutil.tests import safe_rmpath
+from psutil.tests import sh
+from psutil.tests import skip_on_access_denied
+from psutil.tests import skip_on_not_implemented
+from psutil.tests import TESTFILE_PREFIX
+from psutil.tests import TESTFN
+from psutil.tests import ThreadTask
+from psutil.tests import TRAVIS
+from psutil.tests import unittest
+from psutil.tests import wait_for_pid
+from psutil.tests import WIN_VISTA
+
+
+# ===================================================================
+# --- psutil.Process class tests
+# ===================================================================
+
+class TestProcess(unittest.TestCase):
+    """Tests for psutil.Process class."""
+
+    def setUp(self):
+        safe_rmpath(TESTFN)
+
+    def tearDown(self):
+        reap_children()
+
+    def test_pid(self):
+        p = psutil.Process()
+        self.assertEqual(p.pid, os.getpid())
+        sproc = get_test_subprocess()
+        self.assertEqual(psutil.Process(sproc.pid).pid, sproc.pid)
+        with self.assertRaises(AttributeError):
+            p.pid = 33
+
+    def test_kill(self):
+        sproc = get_test_subprocess()
+        test_pid = sproc.pid
+        p = psutil.Process(test_pid)
+        p.kill()
+        sig = p.wait()
+        self.assertFalse(psutil.pid_exists(test_pid))
+        if POSIX:
+            self.assertEqual(sig, -signal.SIGKILL)
+
+    def test_terminate(self):
+        sproc = get_test_subprocess()
+        test_pid = sproc.pid
+        p = psutil.Process(test_pid)
+        p.terminate()
+        sig = p.wait()
+        self.assertFalse(psutil.pid_exists(test_pid))
+        if POSIX:
+            self.assertEqual(sig, -signal.SIGTERM)
+
+    def test_send_signal(self):
+        sig = signal.SIGKILL if POSIX else signal.SIGTERM
+        sproc = get_test_subprocess()
+        p = psutil.Process(sproc.pid)
+        p.send_signal(sig)
+        exit_sig = p.wait()
+        self.assertFalse(psutil.pid_exists(p.pid))
+        if POSIX:
+            self.assertEqual(exit_sig, -sig)
+            #
+            sproc = get_test_subprocess()
+            p = psutil.Process(sproc.pid)
+            p.send_signal(sig)
+            with mock.patch('psutil.os.kill',
+                            side_effect=OSError(errno.ESRCH, "")):
+                with self.assertRaises(psutil.NoSuchProcess):
+                    p.send_signal(sig)
+            #
+            sproc = get_test_subprocess()
+            p = psutil.Process(sproc.pid)
+            p.send_signal(sig)
+            with mock.patch('psutil.os.kill',
+                            side_effect=OSError(errno.EPERM, "")):
+                with self.assertRaises(psutil.AccessDenied):
+                    psutil.Process().send_signal(sig)
+            # Sending a signal to process with PID 0 is not allowed as
+            # it would affect every process in the process group of
+            # the calling process (os.getpid()) instead of PID 0").
+            if 0 in psutil.pids():
+                p = psutil.Process(0)
+                self.assertRaises(ValueError, p.send_signal, signal.SIGTERM)
+
+    def test_wait(self):
+        # check exit code signal
+        sproc = get_test_subprocess()
+        p = psutil.Process(sproc.pid)
+        p.kill()
+        code = p.wait()
+        if POSIX:
+            self.assertEqual(code, -signal.SIGKILL)
+        else:
+            self.assertEqual(code, signal.SIGTERM)
+        self.assertFalse(p.is_running())
+
+        sproc = get_test_subprocess()
+        p = psutil.Process(sproc.pid)
+        p.terminate()
+        code = p.wait()
+        if POSIX:
+            self.assertEqual(code, -signal.SIGTERM)
+        else:
+            self.assertEqual(code, signal.SIGTERM)
+        self.assertFalse(p.is_running())
+
+        # check sys.exit() code
+        code = "import time, sys; time.sleep(0.01); sys.exit(5);"
+        sproc = get_test_subprocess([PYTHON_EXE, "-c", code])
+        p = psutil.Process(sproc.pid)
+        self.assertEqual(p.wait(), 5)
+        self.assertFalse(p.is_running())
+
+        # Test wait() issued twice.
+        # It is not supposed to raise NSP when the process is gone.
+        # On UNIX this should return None, on Windows it should keep
+        # returning the exit code.
+        sproc = get_test_subprocess([PYTHON_EXE, "-c", code])
+        p = psutil.Process(sproc.pid)
+        self.assertEqual(p.wait(), 5)
+        self.assertIn(p.wait(), (5, None))
+
+        # test timeout
+        sproc = get_test_subprocess()
+        p = psutil.Process(sproc.pid)
+        p.name()
+        self.assertRaises(psutil.TimeoutExpired, p.wait, 0.01)
+
+        # timeout < 0 not allowed
+        self.assertRaises(ValueError, p.wait, -1)
+
+    def test_wait_non_children(self):
+        # Test wait() against a process which is not our direct
+        # child.
+        p1, p2 = create_proc_children_pair()
+        self.assertRaises(psutil.TimeoutExpired, p1.wait, 0.01)
+        self.assertRaises(psutil.TimeoutExpired, p2.wait, 0.01)
+        # We also terminate the direct child otherwise the
+        # grandchild will hang until the parent is gone.
+        p1.terminate()
+        p2.terminate()
+        ret1 = p1.wait()
+        ret2 = p2.wait()
+        if POSIX:
+            self.assertEqual(ret1, -signal.SIGTERM)
+            # For processes which are not our children we're supposed
+            # to get None.
+            self.assertEqual(ret2, None)
+        else:
+            self.assertEqual(ret1, signal.SIGTERM)
+            self.assertEqual(ret1, signal.SIGTERM)
+
+    def test_wait_timeout_0(self):
+        sproc = get_test_subprocess()
+        p = psutil.Process(sproc.pid)
+        self.assertRaises(psutil.TimeoutExpired, p.wait, 0)
+        p.kill()
+        stop_at = time.time() + 2
+        while True:
+            try:
+                code = p.wait(0)
+            except psutil.TimeoutExpired:
+                if time.time() >= stop_at:
+                    raise
+            else:
+                break
+        if POSIX:
+            self.assertEqual(code, -signal.SIGKILL)
+        else:
+            self.assertEqual(code, signal.SIGTERM)
+        self.assertFalse(p.is_running())
+
+    def test_cpu_percent(self):
+        p = psutil.Process()
+        p.cpu_percent(interval=0.001)
+        p.cpu_percent(interval=0.001)
+        for x in range(100):
+            percent = p.cpu_percent(interval=None)
+            self.assertIsInstance(percent, float)
+            self.assertGreaterEqual(percent, 0.0)
+        with self.assertRaises(ValueError):
+            p.cpu_percent(interval=-1)
+
+    def test_cpu_percent_numcpus_none(self):
+        # See: https://github.com/giampaolo/psutil/issues/1087
+        with mock.patch('psutil.cpu_count', return_value=None) as m:
+            psutil.Process().cpu_percent()
+            assert m.called
+
+    def test_cpu_times(self):
+        times = psutil.Process().cpu_times()
+        assert (times.user > 0.0) or (times.system > 0.0), times
+        assert (times.children_user >= 0.0), times
+        assert (times.children_system >= 0.0), times
+        # make sure returned values can be pretty printed with strftime
+        for name in times._fields:
+            time.strftime("%H:%M:%S", time.localtime(getattr(times, name)))
+
+    def test_cpu_times_2(self):
+        user_time, kernel_time = psutil.Process().cpu_times()[:2]
+        utime, ktime = os.times()[:2]
+
+        # Use os.times()[:2] as base values to compare our results
+        # using a tolerance  of +/- 0.1 seconds.
+        # It will fail if the difference between the values is > 0.1s.
+        if (max([user_time, utime]) - min([user_time, utime])) > 0.1:
+            self.fail("expected: %s, found: %s" % (utime, user_time))
+
+        if (max([kernel_time, ktime]) - min([kernel_time, ktime])) > 0.1:
+            self.fail("expected: %s, found: %s" % (ktime, kernel_time))
+
+    @unittest.skipIf(not HAS_PROC_CPU_NUM, "not supported")
+    def test_cpu_num(self):
+        p = psutil.Process()
+        num = p.cpu_num()
+        self.assertGreaterEqual(num, 0)
+        if psutil.cpu_count() == 1:
+            self.assertEqual(num, 0)
+        self.assertIn(p.cpu_num(), range(psutil.cpu_count()))
+
+    def test_create_time(self):
+        sproc = get_test_subprocess()
+        now = time.time()
+        p = psutil.Process(sproc.pid)
+        create_time = p.create_time()
+
+        # Use time.time() as base value to compare our result using a
+        # tolerance of +/- 1 second.
+        # It will fail if the difference between the values is > 2s.
+        difference = abs(create_time - now)
+        if difference > 2:
+            self.fail("expected: %s, found: %s, difference: %s"
+                      % (now, create_time, difference))
+
+        # make sure returned value can be pretty printed with strftime
+        time.strftime("%Y %m %d %H:%M:%S", time.localtime(p.create_time()))
+
+    @unittest.skipIf(not POSIX, 'POSIX only')
+    @unittest.skipIf(TRAVIS, 'not reliable on TRAVIS')
+    def test_terminal(self):
+        terminal = psutil.Process().terminal()
+        if sys.stdin.isatty() or sys.stdout.isatty():
+            tty = os.path.realpath(sh('tty'))
+            self.assertEqual(terminal, tty)
+        else:
+            self.assertIsNone(terminal)
+
+    @unittest.skipIf(not HAS_PROC_IO_COUNTERS, 'not supported')
+    @skip_on_not_implemented(only_if=LINUX)
+    def test_io_counters(self):
+        p = psutil.Process()
+
+        # test reads
+        io1 = p.io_counters()
+        with open(PYTHON_EXE, 'rb') as f:
+            f.read()
+        io2 = p.io_counters()
+        if not BSD and not AIX:
+            self.assertGreater(io2.read_count, io1.read_count)
+            self.assertEqual(io2.write_count, io1.write_count)
+            if LINUX:
+                self.assertGreater(io2.read_chars, io1.read_chars)
+                self.assertEqual(io2.write_chars, io1.write_chars)
+        else:
+            self.assertGreaterEqual(io2.read_bytes, io1.read_bytes)
+            self.assertGreaterEqual(io2.write_bytes, io1.write_bytes)
+
+        # test writes
+        io1 = p.io_counters()
+        with tempfile.TemporaryFile(prefix=TESTFILE_PREFIX) as f:
+            if PY3:
+                f.write(bytes("x" * 1000000, 'ascii'))
+            else:
+                f.write("x" * 1000000)
+        io2 = p.io_counters()
+        self.assertGreaterEqual(io2.write_count, io1.write_count)
+        self.assertGreaterEqual(io2.write_bytes, io1.write_bytes)
+        self.assertGreaterEqual(io2.read_count, io1.read_count)
+        self.assertGreaterEqual(io2.read_bytes, io1.read_bytes)
+        if LINUX:
+            self.assertGreater(io2.write_chars, io1.write_chars)
+            self.assertGreaterEqual(io2.read_chars, io1.read_chars)
+
+        # sanity check
+        for i in range(len(io2)):
+            if BSD and i >= 2:
+                # On BSD read_bytes and write_bytes are always set to -1.
+                continue
+            self.assertGreaterEqual(io2[i], 0)
+            self.assertGreaterEqual(io2[i], 0)
+
+    @unittest.skipIf(not HAS_IONICE, "not supported")
+    @unittest.skipIf(WINDOWS and get_winver() < WIN_VISTA, 'not supported')
+    def test_ionice(self):
+        if LINUX:
+            from psutil import (IOPRIO_CLASS_NONE, IOPRIO_CLASS_RT,
+                                IOPRIO_CLASS_BE, IOPRIO_CLASS_IDLE)
+            self.assertEqual(IOPRIO_CLASS_NONE, 0)
+            self.assertEqual(IOPRIO_CLASS_RT, 1)
+            self.assertEqual(IOPRIO_CLASS_BE, 2)
+            self.assertEqual(IOPRIO_CLASS_IDLE, 3)
+            p = psutil.Process()
+            try:
+                p.ionice(2)
+                ioclass, value = p.ionice()
+                if enum is not None:
+                    self.assertIsInstance(ioclass, enum.IntEnum)
+                self.assertEqual(ioclass, 2)
+                self.assertEqual(value, 4)
+                #
+                p.ionice(3)
+                ioclass, value = p.ionice()
+                self.assertEqual(ioclass, 3)
+                self.assertEqual(value, 0)
+                #
+                p.ionice(2, 0)
+                ioclass, value = p.ionice()
+                self.assertEqual(ioclass, 2)
+                self.assertEqual(value, 0)
+                p.ionice(2, 7)
+                ioclass, value = p.ionice()
+                self.assertEqual(ioclass, 2)
+                self.assertEqual(value, 7)
+            finally:
+                p.ionice(IOPRIO_CLASS_NONE)
+        else:
+            p = psutil.Process()
+            original = p.ionice()
+            self.assertIsInstance(original, int)
+            try:
+                value = 0  # very low
+                if original == value:
+                    value = 1  # low
+                p.ionice(value)
+                self.assertEqual(p.ionice(), value)
+            finally:
+                p.ionice(original)
+
+    @unittest.skipIf(not HAS_IONICE, "not supported")
+    @unittest.skipIf(WINDOWS and get_winver() < WIN_VISTA, 'not supported')
+    def test_ionice_errs(self):
+        sproc = get_test_subprocess()
+        p = psutil.Process(sproc.pid)
+        if LINUX:
+            self.assertRaises(ValueError, p.ionice, 2, 10)
+            self.assertRaises(ValueError, p.ionice, 2, -1)
+            self.assertRaises(ValueError, p.ionice, 4)
+            self.assertRaises(TypeError, p.ionice, 2, "foo")
+            self.assertRaisesRegex(
+                ValueError, "can't specify value with IOPRIO_CLASS_NONE",
+                p.ionice, psutil.IOPRIO_CLASS_NONE, 1)
+            self.assertRaisesRegex(
+                ValueError, "can't specify value with IOPRIO_CLASS_IDLE",
+                p.ionice, psutil.IOPRIO_CLASS_IDLE, 1)
+            self.assertRaisesRegex(
+                ValueError, "'ioclass' argument must be specified",
+                p.ionice, value=1)
+        else:
+            self.assertRaises(ValueError, p.ionice, 3)
+            self.assertRaises(TypeError, p.ionice, 2, 1)
+
+    @unittest.skipIf(not HAS_RLIMIT, "not supported")
+    def test_rlimit_get(self):
+        import resource
+        p = psutil.Process(os.getpid())
+        names = [x for x in dir(psutil) if x.startswith('RLIMIT')]
+        assert names, names
+        for name in names:
+            value = getattr(psutil, name)
+            self.assertGreaterEqual(value, 0)
+            if name in dir(resource):
+                self.assertEqual(value, getattr(resource, name))
+                # XXX - On PyPy RLIMIT_INFINITY returned by
+                # resource.getrlimit() is reported as a very big long
+                # number instead of -1. It looks like a bug with PyPy.
+                if PYPY:
+                    continue
+                self.assertEqual(p.rlimit(value), resource.getrlimit(value))
+            else:
+                ret = p.rlimit(value)
+                self.assertEqual(len(ret), 2)
+                self.assertGreaterEqual(ret[0], -1)
+                self.assertGreaterEqual(ret[1], -1)
+
+    @unittest.skipIf(not HAS_RLIMIT, "not supported")
+    def test_rlimit_set(self):
+        sproc = get_test_subprocess()
+        p = psutil.Process(sproc.pid)
+        p.rlimit(psutil.RLIMIT_NOFILE, (5, 5))
+        self.assertEqual(p.rlimit(psutil.RLIMIT_NOFILE), (5, 5))
+        # If pid is 0 prlimit() applies to the calling process and
+        # we don't want that.
+        with self.assertRaises(ValueError):
+            psutil._psplatform.Process(0).rlimit(0)
+        with self.assertRaises(ValueError):
+            p.rlimit(psutil.RLIMIT_NOFILE, (5, 5, 5))
+
+    @unittest.skipIf(not HAS_RLIMIT, "not supported")
+    def test_rlimit(self):
+        p = psutil.Process()
+        soft, hard = p.rlimit(psutil.RLIMIT_FSIZE)
+        try:
+            p.rlimit(psutil.RLIMIT_FSIZE, (1024, hard))
+            with open(TESTFN, "wb") as f:
+                f.write(b"X" * 1024)
+            # write() or flush() doesn't always cause the exception
+            # but close() will.
+            with self.assertRaises(IOError) as exc:
+                with open(TESTFN, "wb") as f:
+                    f.write(b"X" * 1025)
+            self.assertEqual(exc.exception.errno if PY3 else exc.exception[0],
+                             errno.EFBIG)
+        finally:
+            p.rlimit(psutil.RLIMIT_FSIZE, (soft, hard))
+            self.assertEqual(p.rlimit(psutil.RLIMIT_FSIZE), (soft, hard))
+
+    @unittest.skipIf(not HAS_RLIMIT, "not supported")
+    def test_rlimit_infinity(self):
+        # First set a limit, then re-set it by specifying INFINITY
+        # and assume we overridden the previous limit.
+        p = psutil.Process()
+        soft, hard = p.rlimit(psutil.RLIMIT_FSIZE)
+        try:
+            p.rlimit(psutil.RLIMIT_FSIZE, (1024, hard))
+            p.rlimit(psutil.RLIMIT_FSIZE, (psutil.RLIM_INFINITY, hard))
+            with open(TESTFN, "wb") as f:
+                f.write(b"X" * 2048)
+        finally:
+            p.rlimit(psutil.RLIMIT_FSIZE, (soft, hard))
+            self.assertEqual(p.rlimit(psutil.RLIMIT_FSIZE), (soft, hard))
+
+    @unittest.skipIf(not HAS_RLIMIT, "not supported")
+    def test_rlimit_infinity_value(self):
+        # RLIMIT_FSIZE should be RLIM_INFINITY, which will be a really
+        # big number on a platform with large file support.  On these
+        # platforms we need to test that the get/setrlimit functions
+        # properly convert the number to a C long long and that the
+        # conversion doesn't raise an error.
+        p = psutil.Process()
+        soft, hard = p.rlimit(psutil.RLIMIT_FSIZE)
+        self.assertEqual(psutil.RLIM_INFINITY, hard)
+        p.rlimit(psutil.RLIMIT_FSIZE, (soft, hard))
+
+    def test_num_threads(self):
+        # on certain platforms such as Linux we might test for exact
+        # thread number, since we always have with 1 thread per process,
+        # but this does not apply across all platforms (MACOS, Windows)
+        p = psutil.Process()
+        if OPENBSD:
+            try:
+                step1 = p.num_threads()
+            except psutil.AccessDenied:
+                raise unittest.SkipTest("on OpenBSD this requires root access")
+        else:
+            step1 = p.num_threads()
+
+        with ThreadTask():
+            step2 = p.num_threads()
+            self.assertEqual(step2, step1 + 1)
+
+    @unittest.skipIf(not WINDOWS, 'WINDOWS only')
+    def test_num_handles(self):
+        # a better test is done later into test/_windows.py
+        p = psutil.Process()
+        self.assertGreater(p.num_handles(), 0)
+
+    @unittest.skipIf(not HAS_THREADS, 'not supported')
+    def test_threads(self):
+        p = psutil.Process()
+        if OPENBSD:
+            try:
+                step1 = p.threads()
+            except psutil.AccessDenied:
+                raise unittest.SkipTest("on OpenBSD this requires root access")
+        else:
+            step1 = p.threads()
+
+        with ThreadTask():
+            step2 = p.threads()
+            self.assertEqual(len(step2), len(step1) + 1)
+            athread = step2[0]
+            # test named tuple
+            self.assertEqual(athread.id, athread[0])
+            self.assertEqual(athread.user_time, athread[1])
+            self.assertEqual(athread.system_time, athread[2])
+
+    @retry_before_failing()
+    @skip_on_access_denied(only_if=MACOS)
+    @unittest.skipIf(not HAS_THREADS, 'not supported')
+    def test_threads_2(self):
+        sproc = get_test_subprocess()
+        p = psutil.Process(sproc.pid)
+        if OPENBSD:
+            try:
+                p.threads()
+            except psutil.AccessDenied:
+                raise unittest.SkipTest(
+                    "on OpenBSD this requires root access")
+        self.assertAlmostEqual(
+            p.cpu_times().user,
+            sum([x.user_time for x in p.threads()]), delta=0.1)
+        self.assertAlmostEqual(
+            p.cpu_times().system,
+            sum([x.system_time for x in p.threads()]), delta=0.1)
+
+    def test_memory_info(self):
+        p = psutil.Process()
+
+        # step 1 - get a base value to compare our results
+        rss1, vms1 = p.memory_info()[:2]
+        percent1 = p.memory_percent()
+        self.assertGreater(rss1, 0)
+        self.assertGreater(vms1, 0)
+
+        # step 2 - allocate some memory
+        memarr = [None] * 1500000
+
+        rss2, vms2 = p.memory_info()[:2]
+        percent2 = p.memory_percent()
+
+        # step 3 - make sure that the memory usage bumped up
+        self.assertGreater(rss2, rss1)
+        self.assertGreaterEqual(vms2, vms1)  # vms might be equal
+        self.assertGreater(percent2, percent1)
+        del memarr
+
+        if WINDOWS:
+            mem = p.memory_info()
+            self.assertEqual(mem.rss, mem.wset)
+            self.assertEqual(mem.vms, mem.pagefile)
+
+        mem = p.memory_info()
+        for name in mem._fields:
+            self.assertGreaterEqual(getattr(mem, name), 0)
+
+    def test_memory_full_info(self):
+        total = psutil.virtual_memory().total
+        mem = psutil.Process().memory_full_info()
+        for name in mem._fields:
+            value = getattr(mem, name)
+            self.assertGreaterEqual(value, 0, msg=(name, value))
+            if name == 'vms' and OSX or LINUX:
+                continue
+            self.assertLessEqual(value, total, msg=(name, value, total))
+        if LINUX or WINDOWS or MACOS:
+            self.assertGreaterEqual(mem.uss, 0)
+        if LINUX:
+            self.assertGreaterEqual(mem.pss, 0)
+            self.assertGreaterEqual(mem.swap, 0)
+
+    @unittest.skipIf(not HAS_MEMORY_MAPS, "not supported")
+    def test_memory_maps(self):
+        p = psutil.Process()
+        maps = p.memory_maps()
+        paths = [x for x in maps]
+        self.assertEqual(len(paths), len(set(paths)))
+        ext_maps = p.memory_maps(grouped=False)
+
+        for nt in maps:
+            if not nt.path.startswith('['):
+                assert os.path.isabs(nt.path), nt.path
+                if POSIX:
+                    try:
+                        assert os.path.exists(nt.path) or \
+                            os.path.islink(nt.path), nt.path
+                    except AssertionError:
+                        if not LINUX:
+                            raise
+                        else:
+                            # https://github.com/giampaolo/psutil/issues/759
+                            with open_text('/proc/self/smaps') as f:
+                                data = f.read()
+                            if "%s (deleted)" % nt.path not in data:
+                                raise
+                else:
+                    # XXX - On Windows we have this strange behavior with
+                    # 64 bit dlls: they are visible via explorer but cannot
+                    # be accessed via os.stat() (wtf?).
+                    if '64' not in os.path.basename(nt.path):
+                        assert os.path.exists(nt.path), nt.path
+        for nt in ext_maps:
+            for fname in nt._fields:
+                value = getattr(nt, fname)
+                if fname == 'path':
+                    continue
+                elif fname in ('addr', 'perms'):
+                    assert value, value
+                else:
+                    self.assertIsInstance(value, (int, long))
+                    assert value >= 0, value
+
+    @unittest.skipIf(not HAS_MEMORY_MAPS, "not supported")
+    def test_memory_maps_lists_lib(self):
+        # Make sure a newly loaded shared lib is listed.
+        with copyload_shared_lib() as path:
+            def normpath(p):
+                return os.path.realpath(os.path.normcase(p))
+            libpaths = [normpath(x.path)
+                        for x in psutil.Process().memory_maps()]
+            self.assertIn(normpath(path), libpaths)
+
+    def test_memory_percent(self):
+        p = psutil.Process()
+        p.memory_percent()
+        self.assertRaises(ValueError, p.memory_percent, memtype="?!?")
+        if LINUX or MACOS or WINDOWS:
+            p.memory_percent(memtype='uss')
+
+    def test_is_running(self):
+        sproc = get_test_subprocess()
+        p = psutil.Process(sproc.pid)
+        assert p.is_running()
+        assert p.is_running()
+        p.kill()
+        p.wait()
+        assert not p.is_running()
+        assert not p.is_running()
+
+    def test_exe(self):
+        sproc = get_test_subprocess()
+        exe = psutil.Process(sproc.pid).exe()
+        try:
+            self.assertEqual(exe, PYTHON_EXE)
+        except AssertionError:
+            if WINDOWS and len(exe) == len(PYTHON_EXE):
+                # on Windows we don't care about case sensitivity
+                normcase = os.path.normcase
+                self.assertEqual(normcase(exe), normcase(PYTHON_EXE))
+            else:
+                # certain platforms such as BSD are more accurate returning:
+                # "/usr/local/bin/python2.7"
+                # ...instead of:
+                # "/usr/local/bin/python"
+                # We do not want to consider this difference in accuracy
+                # an error.
+                ver = "%s.%s" % (sys.version_info[0], sys.version_info[1])
+                try:
+                    self.assertEqual(exe.replace(ver, ''),
+                                     PYTHON_EXE.replace(ver, ''))
+                except AssertionError:
+                    # Tipically MACOS. Really not sure what to do here.
+                    pass
+
+        out = sh([exe, "-c", "import os; print('hey')"])
+        self.assertEqual(out, 'hey')
+
+    def test_cmdline(self):
+        cmdline = [PYTHON_EXE, "-c", "import time; time.sleep(60)"]
+        sproc = get_test_subprocess(cmdline)
+        try:
+            self.assertEqual(' '.join(psutil.Process(sproc.pid).cmdline()),
+                             ' '.join(cmdline))
+        except AssertionError:
+            # XXX - most of the times the underlying sysctl() call on Net
+            # and Open BSD returns a truncated string.
+            # Also /proc/pid/cmdline behaves the same so it looks
+            # like this is a kernel bug.
+            # XXX - AIX truncates long arguments in /proc/pid/cmdline
+            if NETBSD or OPENBSD or AIX:
+                self.assertEqual(
+                    psutil.Process(sproc.pid).cmdline()[0], PYTHON_EXE)
+            else:
+                raise
+
+    def test_name(self):
+        sproc = get_test_subprocess(PYTHON_EXE)
+        name = psutil.Process(sproc.pid).name().lower()
+        pyexe = os.path.basename(os.path.realpath(sys.executable)).lower()
+        assert pyexe.startswith(name), (pyexe, name)
+
+    # XXX
+    @unittest.skipIf(SUNOS, "broken on SUNOS")
+    @unittest.skipIf(AIX, "broken on AIX")
+    def test_prog_w_funky_name(self):
+        # Test that name(), exe() and cmdline() correctly handle programs
+        # with funky chars such as spaces and ")", see:
+        # https://github.com/giampaolo/psutil/issues/628
+
+        def rm():
+            # Try to limit occasional failures on Appveyor:
+            # https://ci.appveyor.com/project/giampaolo/psutil/build/1350/
+            #     job/lbo3bkju55le850n
+            try:
+                safe_rmpath(funky_path)
+            except OSError:
+                pass
+
+        funky_path = TESTFN + 'foo bar )'
+        create_exe(funky_path)
+        self.addCleanup(rm)
+        cmdline = [funky_path, "-c",
+                   "import time; [time.sleep(0.01) for x in range(3000)];"
+                   "arg1", "arg2", "", "arg3", ""]
+        sproc = get_test_subprocess(cmdline)
+        p = psutil.Process(sproc.pid)
+        # ...in order to try to prevent occasional failures on travis
+        if TRAVIS:
+            wait_for_pid(p.pid)
+        self.assertEqual(p.cmdline(), cmdline)
+        self.assertEqual(p.name(), os.path.basename(funky_path))
+        self.assertEqual(os.path.normcase(p.exe()),
+                         os.path.normcase(funky_path))
+
+    @unittest.skipIf(not POSIX, 'POSIX only')
+    def test_uids(self):
+        p = psutil.Process()
+        real, effective, saved = p.uids()
+        # os.getuid() refers to "real" uid
+        self.assertEqual(real, os.getuid())
+        # os.geteuid() refers to "effective" uid
+        self.assertEqual(effective, os.geteuid())
+        # No such thing as os.getsuid() ("saved" uid), but starting
+        # from python 2.7 we have os.getresuid() which returns all
+        # of them.
+        if hasattr(os, "getresuid"):
+            self.assertEqual(os.getresuid(), p.uids())
+
+    @unittest.skipIf(not POSIX, 'POSIX only')
+    def test_gids(self):
+        p = psutil.Process()
+        real, effective, saved = p.gids()
+        # os.getuid() refers to "real" uid
+        self.assertEqual(real, os.getgid())
+        # os.geteuid() refers to "effective" uid
+        self.assertEqual(effective, os.getegid())
+        # No such thing as os.getsgid() ("saved" gid), but starting
+        # from python 2.7 we have os.getresgid() which returns all
+        # of them.
+        if hasattr(os, "getresuid"):
+            self.assertEqual(os.getresgid(), p.gids())
+
+    def test_nice(self):
+        p = psutil.Process()
+        self.assertRaises(TypeError, p.nice, "str")
+        if WINDOWS:
+            try:
+                init = p.nice()
+                if sys.version_info > (3, 4):
+                    self.assertIsInstance(init, enum.IntEnum)
+                else:
+                    self.assertIsInstance(init, int)
+                self.assertEqual(init, psutil.NORMAL_PRIORITY_CLASS)
+                p.nice(psutil.HIGH_PRIORITY_CLASS)
+                self.assertEqual(p.nice(), psutil.HIGH_PRIORITY_CLASS)
+                p.nice(psutil.NORMAL_PRIORITY_CLASS)
+                self.assertEqual(p.nice(), psutil.NORMAL_PRIORITY_CLASS)
+            finally:
+                p.nice(psutil.NORMAL_PRIORITY_CLASS)
+        else:
+            first_nice = p.nice()
+            try:
+                if hasattr(os, "getpriority"):
+                    self.assertEqual(
+                        os.getpriority(os.PRIO_PROCESS, os.getpid()), p.nice())
+                p.nice(1)
+                self.assertEqual(p.nice(), 1)
+                if hasattr(os, "getpriority"):
+                    self.assertEqual(
+                        os.getpriority(os.PRIO_PROCESS, os.getpid()), p.nice())
+                # XXX - going back to previous nice value raises
+                # AccessDenied on MACOS
+                if not MACOS:
+                    p.nice(0)
+                    self.assertEqual(p.nice(), 0)
+            except psutil.AccessDenied:
+                pass
+            finally:
+                try:
+                    p.nice(first_nice)
+                except psutil.AccessDenied:
+                    pass
+
+    def test_status(self):
+        p = psutil.Process()
+        self.assertEqual(p.status(), psutil.STATUS_RUNNING)
+
+    def test_username(self):
+        sproc = get_test_subprocess()
+        p = psutil.Process(sproc.pid)
+        username = p.username()
+        if WINDOWS:
+            domain, username = username.split('\\')
+            self.assertEqual(username, getpass.getuser())
+            if 'USERDOMAIN' in os.environ:
+                self.assertEqual(domain, os.environ['USERDOMAIN'])
+        else:
+            self.assertEqual(username, getpass.getuser())
+
+    def test_cwd(self):
+        sproc = get_test_subprocess()
+        p = psutil.Process(sproc.pid)
+        self.assertEqual(p.cwd(), os.getcwd())
+
+    def test_cwd_2(self):
+        cmd = [PYTHON_EXE, "-c",
+               "import os, time; os.chdir('..'); time.sleep(60)"]
+        sproc = get_test_subprocess(cmd)
+        p = psutil.Process(sproc.pid)
+        call_until(p.cwd, "ret == os.path.dirname(os.getcwd())")
+
+    @unittest.skipIf(not HAS_CPU_AFFINITY, 'not supported')
+    def test_cpu_affinity(self):
+        p = psutil.Process()
+        initial = p.cpu_affinity()
+        assert initial, initial
+        self.addCleanup(p.cpu_affinity, initial)
+
+        if hasattr(os, "sched_getaffinity"):
+            self.assertEqual(initial, list(os.sched_getaffinity(p.pid)))
+        self.assertEqual(len(initial), len(set(initial)))
+
+        all_cpus = list(range(len(psutil.cpu_percent(percpu=True))))
+        # Work around travis failure:
+        # https://travis-ci.org/giampaolo/psutil/builds/284173194
+        for n in all_cpus if not TRAVIS else initial:
+            p.cpu_affinity([n])
+            self.assertEqual(p.cpu_affinity(), [n])
+            if hasattr(os, "sched_getaffinity"):
+                self.assertEqual(p.cpu_affinity(),
+                                 list(os.sched_getaffinity(p.pid)))
+            # also test num_cpu()
+            if hasattr(p, "num_cpu"):
+                self.assertEqual(p.cpu_affinity()[0], p.num_cpu())
+
+        # [] is an alias for "all eligible CPUs"; on Linux this may
+        # not be equal to all available CPUs, see:
+        # https://github.com/giampaolo/psutil/issues/956
+        p.cpu_affinity([])
+        if LINUX:
+            self.assertEqual(p.cpu_affinity(), p._proc._get_eligible_cpus())
+        else:
+            self.assertEqual(p.cpu_affinity(), all_cpus)
+        if hasattr(os, "sched_getaffinity"):
+            self.assertEqual(p.cpu_affinity(),
+                             list(os.sched_getaffinity(p.pid)))
+        #
+        self.assertRaises(TypeError, p.cpu_affinity, 1)
+        p.cpu_affinity(initial)
+        # it should work with all iterables, not only lists
+        if not TRAVIS:
+            p.cpu_affinity(set(all_cpus))
+            p.cpu_affinity(tuple(all_cpus))
+
+    @unittest.skipIf(not HAS_CPU_AFFINITY, 'not supported')
+    def test_cpu_affinity_errs(self):
+        sproc = get_test_subprocess()
+        p = psutil.Process(sproc.pid)
+        invalid_cpu = [len(psutil.cpu_times(percpu=True)) + 10]
+        self.assertRaises(ValueError, p.cpu_affinity, invalid_cpu)
+        self.assertRaises(ValueError, p.cpu_affinity, range(10000, 11000))
+        self.assertRaises(TypeError, p.cpu_affinity, [0, "1"])
+        self.assertRaises(ValueError, p.cpu_affinity, [0, -1])
+
+    @unittest.skipIf(not HAS_CPU_AFFINITY, 'not supported')
+    def test_cpu_affinity_all_combinations(self):
+        p = psutil.Process()
+        initial = p.cpu_affinity()
+        assert initial, initial
+        self.addCleanup(p.cpu_affinity, initial)
+
+        # All possible CPU set combinations.
+        combos = []
+        for l in range(0, len(initial) + 1):
+            for subset in itertools.combinations(initial, l):
+                if subset:
+                    combos.append(list(subset))
+
+        for combo in combos:
+            p.cpu_affinity(combo)
+            self.assertEqual(p.cpu_affinity(), combo)
+
+    # TODO: #595
+    @unittest.skipIf(BSD, "broken on BSD")
+    # can't find any process file on Appveyor
+    @unittest.skipIf(APPVEYOR, "unreliable on APPVEYOR")
+    def test_open_files(self):
+        # current process
+        p = psutil.Process()
+        files = p.open_files()
+        self.assertFalse(TESTFN in files)
+        with open(TESTFN, 'wb') as f:
+            f.write(b'x' * 1024)
+            f.flush()
+            # give the kernel some time to see the new file
+            files = call_until(p.open_files, "len(ret) != %i" % len(files))
+            for file in files:
+                if file.path == TESTFN:
+                    if LINUX:
+                        self.assertEqual(file.position, 1024)
+                    break
+            else:
+                self.fail("no file found; files=%s" % repr(files))
+        for file in files:
+            assert os.path.isfile(file.path), file
+
+        # another process
+        cmdline = "import time; f = open(r'%s', 'r'); time.sleep(60);" % TESTFN
+        sproc = get_test_subprocess([PYTHON_EXE, "-c", cmdline])
+        p = psutil.Process(sproc.pid)
+
+        for x in range(100):
+            filenames = [x.path for x in p.open_files()]
+            if TESTFN in filenames:
+                break
+            time.sleep(.01)
+        else:
+            self.assertIn(TESTFN, filenames)
+        for file in filenames:
+            assert os.path.isfile(file), file
+
+    # TODO: #595
+    @unittest.skipIf(BSD, "broken on BSD")
+    # can't find any process file on Appveyor
+    @unittest.skipIf(APPVEYOR, "unreliable on APPVEYOR")
+    def test_open_files_2(self):
+        # test fd and path fields
+        with open(TESTFN, 'w') as fileobj:
+            p = psutil.Process()
+            for file in p.open_files():
+                if file.path == fileobj.name or file.fd == fileobj.fileno():
+                    break
+            else:
+                self.fail("no file found; files=%s" % repr(p.open_files()))
+            self.assertEqual(file.path, fileobj.name)
+            if WINDOWS:
+                self.assertEqual(file.fd, -1)
+            else:
+                self.assertEqual(file.fd, fileobj.fileno())
+            # test positions
+            ntuple = p.open_files()[0]
+            self.assertEqual(ntuple[0], ntuple.path)
+            self.assertEqual(ntuple[1], ntuple.fd)
+            # test file is gone
+            self.assertNotIn(fileobj.name, p.open_files())
+
+    @unittest.skipIf(not POSIX, 'POSIX only')
+    def test_num_fds(self):
+        p = psutil.Process()
+        start = p.num_fds()
+        file = open(TESTFN, 'w')
+        self.addCleanup(file.close)
+        self.assertEqual(p.num_fds(), start + 1)
+        sock = socket.socket()
+        self.addCleanup(sock.close)
+        self.assertEqual(p.num_fds(), start + 2)
+        file.close()
+        sock.close()
+        self.assertEqual(p.num_fds(), start)
+
+    @skip_on_not_implemented(only_if=LINUX)
+    @unittest.skipIf(OPENBSD or NETBSD, "not reliable on OPENBSD & NETBSD")
+    def test_num_ctx_switches(self):
+        p = psutil.Process()
+        before = sum(p.num_ctx_switches())
+        for x in range(500000):
+            after = sum(p.num_ctx_switches())
+            if after > before:
+                return
+        self.fail("num ctx switches still the same after 50.000 iterations")
+
+    def test_ppid(self):
+        if hasattr(os, 'getppid'):
+            self.assertEqual(psutil.Process().ppid(), os.getppid())
+        this_parent = os.getpid()
+        sproc = get_test_subprocess()
+        p = psutil.Process(sproc.pid)
+        self.assertEqual(p.ppid(), this_parent)
+        # no other process is supposed to have us as parent
+        reap_children(recursive=True)
+        if APPVEYOR:
+            # Occasional failures, see:
+            # https://ci.appveyor.com/project/giampaolo/psutil/build/
+            #     job/0hs623nenj7w4m33
+            return
+        for p in psutil.process_iter():
+            if p.pid == sproc.pid:
+                continue
+            # XXX: sometimes this fails on Windows; not sure why.
+            self.assertNotEqual(p.ppid(), this_parent, msg=p)
+
+    def test_parent(self):
+        this_parent = os.getpid()
+        sproc = get_test_subprocess()
+        p = psutil.Process(sproc.pid)
+        self.assertEqual(p.parent().pid, this_parent)
+
+        lowest_pid = psutil.pids()[0]
+        self.assertIsNone(psutil.Process(lowest_pid).parent())
+
+    def test_parent_multi(self):
+        p1, p2 = create_proc_children_pair()
+        self.assertEqual(p2.parent(), p1)
+        self.assertEqual(p1.parent(), psutil.Process())
+
+    def test_parent_disappeared(self):
+        # Emulate a case where the parent process disappeared.
+        sproc = get_test_subprocess()
+        p = psutil.Process(sproc.pid)
+        with mock.patch("psutil.Process",
+                        side_effect=psutil.NoSuchProcess(0, 'foo')):
+            self.assertIsNone(p.parent())
+
+    def test_parents(self):
+        assert psutil.Process().parents()
+        p1, p2 = create_proc_children_pair()
+        self.assertEqual(p1.parents()[0], psutil.Process())
+        self.assertEqual(p2.parents()[0], p1)
+        self.assertEqual(p2.parents()[1], psutil.Process())
+        if POSIX:
+            lowest_pid = psutil.pids()[0]
+            self.assertEqual(p1.parents()[-1].pid, lowest_pid)
+            self.assertEqual(p2.parents()[-1].pid, lowest_pid)
+
+    def test_children(self):
+        reap_children(recursive=True)
+        p = psutil.Process()
+        self.assertEqual(p.children(), [])
+        self.assertEqual(p.children(recursive=True), [])
+        # On Windows we set the flag to 0 in order to cancel out the
+        # CREATE_NO_WINDOW flag (enabled by default) which creates
+        # an extra "conhost.exe" child.
+        sproc = get_test_subprocess(creationflags=0)
+        children1 = p.children()
+        children2 = p.children(recursive=True)
+        for children in (children1, children2):
+            self.assertEqual(len(children), 1)
+            self.assertEqual(children[0].pid, sproc.pid)
+            self.assertEqual(children[0].ppid(), os.getpid())
+
+    def test_children_recursive(self):
+        # Test children() against two sub processes, p1 and p2, where
+        # p1 (our child) spawned p2 (our grandchild).
+        p1, p2 = create_proc_children_pair()
+        p = psutil.Process()
+        self.assertEqual(p.children(), [p1])
+        self.assertEqual(p.children(recursive=True), [p1, p2])
+        # If the intermediate process is gone there's no way for
+        # children() to recursively find it.
+        p1.terminate()
+        p1.wait()
+        self.assertEqual(p.children(recursive=True), [])
+
+    def test_children_duplicates(self):
+        # find the process which has the highest number of children
+        table = collections.defaultdict(int)
+        for p in psutil.process_iter():
+            try:
+                table[p.ppid()] += 1
+            except psutil.Error:
+                pass
+        # this is the one, now let's make sure there are no duplicates
+        pid = sorted(table.items(), key=lambda x: x[1])[-1][0]
+        p = psutil.Process(pid)
+        try:
+            c = p.children(recursive=True)
+        except psutil.AccessDenied:  # windows
+            pass
+        else:
+            self.assertEqual(len(c), len(set(c)))
+
+    def test_parents_and_children(self):
+        p1, p2 = create_proc_children_pair()
+        me = psutil.Process()
+        # forward
+        children = me.children(recursive=True)
+        self.assertEqual(len(children), 2)
+        self.assertEqual(children[0], p1)
+        self.assertEqual(children[1], p2)
+        # backward
+        parents = p2.parents()
+        self.assertEqual(parents[0], p1)
+        self.assertEqual(parents[1], me)
+
+    def test_suspend_resume(self):
+        sproc = get_test_subprocess()
+        p = psutil.Process(sproc.pid)
+        p.suspend()
+        for x in range(100):
+            if p.status() == psutil.STATUS_STOPPED:
+                break
+            time.sleep(0.01)
+        p.resume()
+        self.assertNotEqual(p.status(), psutil.STATUS_STOPPED)
+
+    def test_invalid_pid(self):
+        self.assertRaises(TypeError, psutil.Process, "1")
+        self.assertRaises(ValueError, psutil.Process, -1)
+
+    def test_as_dict(self):
+        p = psutil.Process()
+        d = p.as_dict(attrs=['exe', 'name'])
+        self.assertEqual(sorted(d.keys()), ['exe', 'name'])
+
+        p = psutil.Process(min(psutil.pids()))
+        d = p.as_dict(attrs=['connections'], ad_value='foo')
+        if not isinstance(d['connections'], list):
+            self.assertEqual(d['connections'], 'foo')
+
+        # Test ad_value is set on AccessDenied.
+        with mock.patch('psutil.Process.nice', create=True,
+                        side_effect=psutil.AccessDenied):
+            self.assertEqual(
+                p.as_dict(attrs=["nice"], ad_value=1), {"nice": 1})
+
+        # Test that NoSuchProcess bubbles up.
+        with mock.patch('psutil.Process.nice', create=True,
+                        side_effect=psutil.NoSuchProcess(p.pid, "name")):
+            self.assertRaises(
+                psutil.NoSuchProcess, p.as_dict, attrs=["nice"])
+
+        # Test that ZombieProcess is swallowed.
+        with mock.patch('psutil.Process.nice', create=True,
+                        side_effect=psutil.ZombieProcess(p.pid, "name")):
+            self.assertEqual(
+                p.as_dict(attrs=["nice"], ad_value="foo"), {"nice": "foo"})
+
+        # By default APIs raising NotImplementedError are
+        # supposed to be skipped.
+        with mock.patch('psutil.Process.nice', create=True,
+                        side_effect=NotImplementedError):
+            d = p.as_dict()
+            self.assertNotIn('nice', list(d.keys()))
+            # ...unless the user explicitly asked for some attr.
+            with self.assertRaises(NotImplementedError):
+                p.as_dict(attrs=["nice"])
+
+        # errors
+        with self.assertRaises(TypeError):
+            p.as_dict('name')
+        with self.assertRaises(ValueError):
+            p.as_dict(['foo'])
+        with self.assertRaises(ValueError):
+            p.as_dict(['foo', 'bar'])
+
+    def test_oneshot(self):
+        with mock.patch("psutil._psplatform.Process.cpu_times") as m:
+            p = psutil.Process()
+            with p.oneshot():
+                p.cpu_times()
+                p.cpu_times()
+            self.assertEqual(m.call_count, 1)
+
+        with mock.patch("psutil._psplatform.Process.cpu_times") as m:
+            p.cpu_times()
+            p.cpu_times()
+        self.assertEqual(m.call_count, 2)
+
+    def test_oneshot_twice(self):
+        # Test the case where the ctx manager is __enter__ed twice.
+        # The second __enter__ is supposed to resut in a NOOP.
+        with mock.patch("psutil._psplatform.Process.cpu_times") as m1:
+            with mock.patch("psutil._psplatform.Process.oneshot_enter") as m2:
+                p = psutil.Process()
+                with p.oneshot():
+                    p.cpu_times()
+                    p.cpu_times()
+                    with p.oneshot():
+                        p.cpu_times()
+                        p.cpu_times()
+                self.assertEqual(m1.call_count, 1)
+                self.assertEqual(m2.call_count, 1)
+
+        with mock.patch("psutil._psplatform.Process.cpu_times") as m:
+            p.cpu_times()
+            p.cpu_times()
+        self.assertEqual(m.call_count, 2)
+
+    def test_oneshot_cache(self):
+        # Make sure oneshot() cache is nonglobal. Instead it's
+        # supposed to be bound to the Process instance, see:
+        # https://github.com/giampaolo/psutil/issues/1373
+        p1, p2 = create_proc_children_pair()
+        p1_ppid = p1.ppid()
+        p2_ppid = p2.ppid()
+        self.assertNotEqual(p1_ppid, p2_ppid)
+        with p1.oneshot():
+            self.assertEqual(p1.ppid(), p1_ppid)
+            self.assertEqual(p2.ppid(), p2_ppid)
+        with p2.oneshot():
+            self.assertEqual(p1.ppid(), p1_ppid)
+            self.assertEqual(p2.ppid(), p2_ppid)
+
+    def test_halfway_terminated_process(self):
+        # Test that NoSuchProcess exception gets raised in case the
+        # process dies after we create the Process object.
+        # Example:
+        # >>> proc = Process(1234)
+        # >>> time.sleep(2)  # time-consuming task, process dies in meantime
+        # >>> proc.name()
+        # Refers to Issue #15
+        sproc = get_test_subprocess()
+        p = psutil.Process(sproc.pid)
+        p.terminate()
+        p.wait()
+        if WINDOWS:
+            call_until(psutil.pids, "%s not in ret" % p.pid)
+        assert not p.is_running()
+
+        if WINDOWS:
+            with self.assertRaises(psutil.NoSuchProcess):
+                p.send_signal(signal.CTRL_C_EVENT)
+            with self.assertRaises(psutil.NoSuchProcess):
+                p.send_signal(signal.CTRL_BREAK_EVENT)
+
+        excluded_names = ['pid', 'is_running', 'wait', 'create_time',
+                          'oneshot', 'memory_info_ex']
+        if LINUX and not HAS_RLIMIT:
+            excluded_names.append('rlimit')
+        for name in dir(p):
+            if (name.startswith('_') or
+                    name in excluded_names):
+                continue
+            try:
+                meth = getattr(p, name)
+                # get/set methods
+                if name == 'nice':
+                    if POSIX:
+                        ret = meth(1)
+                    else:
+                        ret = meth(psutil.NORMAL_PRIORITY_CLASS)
+                elif name == 'ionice':
+                    ret = meth()
+                    ret = meth(2)
+                elif name == 'rlimit':
+                    ret = meth(psutil.RLIMIT_NOFILE)
+                    ret = meth(psutil.RLIMIT_NOFILE, (5, 5))
+                elif name == 'cpu_affinity':
+                    ret = meth()
+                    ret = meth([0])
+                elif name == 'send_signal':
+                    ret = meth(signal.SIGTERM)
+                else:
+                    ret = meth()
+            except psutil.ZombieProcess:
+                self.fail("ZombieProcess for %r was not supposed to happen" %
+                          name)
+            except psutil.NoSuchProcess:
+                pass
+            except psutil.AccessDenied:
+                if OPENBSD and name in ('threads', 'num_threads'):
+                    pass
+                else:
+                    raise
+            except NotImplementedError:
+                pass
+            else:
+                self.fail(
+                    "NoSuchProcess exception not raised for %r, retval=%s" % (
+                        name, ret))
+
+    @unittest.skipIf(not POSIX, 'POSIX only')
+    def test_zombie_process(self):
+        def succeed_or_zombie_p_exc(fun, *args, **kwargs):
+            try:
+                return fun(*args, **kwargs)
+            except (psutil.ZombieProcess, psutil.AccessDenied):
+                pass
+
+        zpid = create_zombie_proc()
+        self.addCleanup(reap_children, recursive=True)
+        # A zombie process should always be instantiable
+        zproc = psutil.Process(zpid)
+        # ...and at least its status always be querable
+        self.assertEqual(zproc.status(), psutil.STATUS_ZOMBIE)
+        # ...and it should be considered 'running'
+        self.assertTrue(zproc.is_running())
+        # ...and as_dict() shouldn't crash
+        zproc.as_dict()
+        # if cmdline succeeds it should be an empty list
+        ret = succeed_or_zombie_p_exc(zproc.suspend)
+        if ret is not None:
+            self.assertEqual(ret, [])
+
+        if hasattr(zproc, "rlimit"):
+            succeed_or_zombie_p_exc(zproc.rlimit, psutil.RLIMIT_NOFILE)
+            succeed_or_zombie_p_exc(zproc.rlimit, psutil.RLIMIT_NOFILE,
+                                    (5, 5))
+        # set methods
+        succeed_or_zombie_p_exc(zproc.parent)
+        if hasattr(zproc, 'cpu_affinity'):
+            try:
+                succeed_or_zombie_p_exc(zproc.cpu_affinity, [0])
+            except ValueError as err:
+                if TRAVIS and LINUX and "not eligible" in str(err):
+                    # https://travis-ci.org/giampaolo/psutil/jobs/279890461
+                    pass
+                else:
+                    raise
+
+        succeed_or_zombie_p_exc(zproc.nice, 0)
+        if hasattr(zproc, 'ionice'):
+            if LINUX:
+                succeed_or_zombie_p_exc(zproc.ionice, 2, 0)
+            else:
+                succeed_or_zombie_p_exc(zproc.ionice, 0)  # Windows
+        if hasattr(zproc, 'rlimit'):
+            succeed_or_zombie_p_exc(zproc.rlimit,
+                                    psutil.RLIMIT_NOFILE, (5, 5))
+        succeed_or_zombie_p_exc(zproc.suspend)
+        succeed_or_zombie_p_exc(zproc.resume)
+        succeed_or_zombie_p_exc(zproc.terminate)
+        succeed_or_zombie_p_exc(zproc.kill)
+
+        # ...its parent should 'see' it
+        # edit: not true on BSD and MACOS
+        # descendants = [x.pid for x in psutil.Process().children(
+        #                recursive=True)]
+        # self.assertIn(zpid, descendants)
+        # XXX should we also assume ppid be usable?  Note: this
+        # would be an important use case as the only way to get
+        # rid of a zombie is to kill its parent.
+        # self.assertEqual(zpid.ppid(), os.getpid())
+        # ...and all other APIs should be able to deal with it
+        self.assertTrue(psutil.pid_exists(zpid))
+        if not TRAVIS and MACOS:
+            # For some reason this started failing all of the sudden.
+            # Maybe they upgraded MACOS version?
+            # https://travis-ci.org/giampaolo/psutil/jobs/310896404
+            self.assertIn(zpid, psutil.pids())
+            self.assertIn(zpid, [x.pid for x in psutil.process_iter()])
+            psutil._pmap = {}
+            self.assertIn(zpid, [x.pid for x in psutil.process_iter()])
+
+    @unittest.skipIf(not POSIX, 'POSIX only')
+    def test_zombie_process_is_running_w_exc(self):
+        # Emulate a case where internally is_running() raises
+        # ZombieProcess.
+        p = psutil.Process()
+        with mock.patch("psutil.Process",
+                        side_effect=psutil.ZombieProcess(0)) as m:
+            assert p.is_running()
+            assert m.called
+
+    @unittest.skipIf(not POSIX, 'POSIX only')
+    def test_zombie_process_status_w_exc(self):
+        # Emulate a case where internally status() raises
+        # ZombieProcess.
+        p = psutil.Process()
+        with mock.patch("psutil._psplatform.Process.status",
+                        side_effect=psutil.ZombieProcess(0)) as m:
+            self.assertEqual(p.status(), psutil.STATUS_ZOMBIE)
+            assert m.called
+
+    def test_pid_0(self):
+        # Process(0) is supposed to work on all platforms except Linux
+        if 0 not in psutil.pids():
+            self.assertRaises(psutil.NoSuchProcess, psutil.Process, 0)
+            return
+
+        # test all methods
+        p = psutil.Process(0)
+        for name in psutil._as_dict_attrnames:
+            if name == 'pid':
+                continue
+            meth = getattr(p, name)
+            try:
+                ret = meth()
+            except psutil.AccessDenied:
+                pass
+            else:
+                if name in ("uids", "gids"):
+                    self.assertEqual(ret.real, 0)
+                elif name == "username":
+                    if POSIX:
+                        self.assertEqual(p.username(), 'root')
+                    elif WINDOWS:
+                        self.assertEqual(p.username(), 'NT AUTHORITY\\SYSTEM')
+                elif name == "name":
+                    assert name, name
+
+        if hasattr(p, 'rlimit'):
+            try:
+                p.rlimit(psutil.RLIMIT_FSIZE)
+            except psutil.AccessDenied:
+                pass
+
+        p.as_dict()
+
+        if not OPENBSD:
+            self.assertIn(0, psutil.pids())
+            self.assertTrue(psutil.pid_exists(0))
+
+    @unittest.skipIf(not HAS_ENVIRON, "not supported")
+    def test_environ(self):
+        def clean_dict(d):
+            # Most of these are problematic on Travis.
+            d.pop("PSUTIL_TESTING", None)
+            d.pop("PLAT", None)
+            d.pop("HOME", None)
+            if MACOS:
+                d.pop("__CF_USER_TEXT_ENCODING", None)
+                d.pop("VERSIONER_PYTHON_PREFER_32_BIT", None)
+                d.pop("VERSIONER_PYTHON_VERSION", None)
+            return dict(
+                [(k.replace("\r", "").replace("\n", ""),
+                  v.replace("\r", "").replace("\n", ""))
+                 for k, v in d.items()])
+
+        self.maxDiff = None
+        p = psutil.Process()
+        d1 = clean_dict(p.environ())
+        d2 = clean_dict(os.environ.copy())
+        self.assertEqual(d1, d2)
+
+    @unittest.skipIf(not HAS_ENVIRON, "not supported")
+    @unittest.skipIf(not POSIX, "POSIX only")
+    def test_weird_environ(self):
+        # environment variables can contain values without an equals sign
+        code = textwrap.dedent("""
+            #include <unistd.h>
+            #include <fcntl.h>
+            char * const argv[] = {"cat", 0};
+            char * const envp[] = {"A=1", "X", "C=3", 0};
+            int main(void) {
+                /* Close stderr on exec so parent can wait for the execve to
+                 * finish. */
+                if (fcntl(2, F_SETFD, FD_CLOEXEC) != 0)
+                    return 0;
+                return execve("/bin/cat", argv, envp);
+            }
+            """)
+        path = TESTFN
+        create_exe(path, c_code=code)
+        self.addCleanup(safe_rmpath, path)
+        sproc = get_test_subprocess([path],
+                                    stdin=subprocess.PIPE,
+                                    stderr=subprocess.PIPE)
+        p = psutil.Process(sproc.pid)
+        wait_for_pid(p.pid)
+        self.assertTrue(p.is_running())
+        # Wait for process to exec or exit.
+        self.assertEqual(sproc.stderr.read(), b"")
+        self.assertEqual(p.environ(), {"A": "1", "C": "3"})
+        sproc.communicate()
+        self.assertEqual(sproc.returncode, 0)
+
+
+# ===================================================================
+# --- Limited user tests
+# ===================================================================
+
+
+if POSIX and os.getuid() == 0:
+    class LimitedUserTestCase(TestProcess):
+        """Repeat the previous tests by using a limited user.
+        Executed only on UNIX and only if the user who run the test script
+        is root.
+        """
+        # the uid/gid the test suite runs under
+        if hasattr(os, 'getuid'):
+            PROCESS_UID = os.getuid()
+            PROCESS_GID = os.getgid()
+
+        def __init__(self, *args, **kwargs):
+            TestProcess.__init__(self, *args, **kwargs)
+            # re-define all existent test methods in order to
+            # ignore AccessDenied exceptions
+            for attr in [x for x in dir(self) if x.startswith('test')]:
+                meth = getattr(self, attr)
+
+                def test_(self):
+                    try:
+                        meth()
+                    except psutil.AccessDenied:
+                        pass
+                setattr(self, attr, types.MethodType(test_, self))
+
+        def setUp(self):
+            safe_rmpath(TESTFN)
+            TestProcess.setUp(self)
+            os.setegid(1000)
+            os.seteuid(1000)
+
+        def tearDown(self):
+            os.setegid(self.PROCESS_UID)
+            os.seteuid(self.PROCESS_GID)
+            TestProcess.tearDown(self)
+
+        def test_nice(self):
+            try:
+                psutil.Process().nice(-1)
+            except psutil.AccessDenied:
+                pass
+            else:
+                self.fail("exception not raised")
+
+        def test_zombie_process(self):
+            # causes problems if test test suite is run as root
+            pass
+
+
+# ===================================================================
+# --- psutil.Popen tests
+# ===================================================================
+
+
+class TestPopen(unittest.TestCase):
+    """Tests for psutil.Popen class."""
+
+    def tearDown(self):
+        reap_children()
+
+    def test_misc(self):
+        # XXX this test causes a ResourceWarning on Python 3 because
+        # psutil.__subproc instance doesn't get propertly freed.
+        # Not sure what to do though.
+        cmd = [PYTHON_EXE, "-c", "import time; time.sleep(60);"]
+        with psutil.Popen(cmd, stdout=subprocess.PIPE,
+                          stderr=subprocess.PIPE) as proc:
+            proc.name()
+            proc.cpu_times()
+            proc.stdin
+            self.assertTrue(dir(proc))
+            self.assertRaises(AttributeError, getattr, proc, 'foo')
+            proc.terminate()
+
+    def test_ctx_manager(self):
+        with psutil.Popen([PYTHON_EXE, "-V"],
+                          stdout=subprocess.PIPE,
+                          stderr=subprocess.PIPE,
+                          stdin=subprocess.PIPE) as proc:
+            proc.communicate()
+        assert proc.stdout.closed
+        assert proc.stderr.closed
+        assert proc.stdin.closed
+        self.assertEqual(proc.returncode, 0)
+
+    def test_kill_terminate(self):
+        # subprocess.Popen()'s terminate(), kill() and send_signal() do
+        # not raise exception after the process is gone. psutil.Popen
+        # diverges from that.
+        cmd = [PYTHON_EXE, "-c", "import time; time.sleep(60);"]
+        with psutil.Popen(cmd, stdout=subprocess.PIPE,
+                          stderr=subprocess.PIPE) as proc:
+            proc.terminate()
+            proc.wait()
+            self.assertRaises(psutil.NoSuchProcess, proc.terminate)
+            self.assertRaises(psutil.NoSuchProcess, proc.kill)
+            self.assertRaises(psutil.NoSuchProcess, proc.send_signal,
+                              signal.SIGTERM)
+            if WINDOWS and sys.version_info >= (2, 7):
+                self.assertRaises(psutil.NoSuchProcess, proc.send_signal,
+                                  signal.CTRL_C_EVENT)
+                self.assertRaises(psutil.NoSuchProcess, proc.send_signal,
+                                  signal.CTRL_BREAK_EVENT)
+
+
+if __name__ == '__main__':
+    run_test_module_by_name(__file__)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_sunos.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_sunos.py
new file mode 100644
index 00000000..ea9afcde
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_sunos.py
@@ -0,0 +1,45 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Sun OS specific tests."""
+
+import os
+
+import psutil
+from psutil import SUNOS
+from psutil.tests import run_test_module_by_name
+from psutil.tests import sh
+from psutil.tests import unittest
+
+
+@unittest.skipIf(not SUNOS, "SUNOS only")
+class SunOSSpecificTestCase(unittest.TestCase):
+
+    def test_swap_memory(self):
+        out = sh('env PATH=/usr/sbin:/sbin:%s swap -l' % os.environ['PATH'])
+        lines = out.strip().split('\n')[1:]
+        if not lines:
+            raise ValueError('no swap device(s) configured')
+        total = free = 0
+        for line in lines:
+            line = line.split()
+            t, f = line[-2:]
+            total += int(int(t) * 512)
+            free += int(int(f) * 512)
+        used = total - free
+
+        psutil_swap = psutil.swap_memory()
+        self.assertEqual(psutil_swap.total, total)
+        self.assertEqual(psutil_swap.used, used)
+        self.assertEqual(psutil_swap.free, free)
+
+    def test_cpu_count(self):
+        out = sh("/usr/sbin/psrinfo")
+        self.assertEqual(psutil.cpu_count(), len(out.split('\n')))
+
+
+if __name__ == '__main__':
+    run_test_module_by_name(__file__)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_system.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_system.py
new file mode 100644
index 00000000..51223fb0
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_system.py
@@ -0,0 +1,871 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Tests for system APIS."""
+
+import contextlib
+import datetime
+import errno
+import os
+import pprint
+import shutil
+import signal
+import socket
+import sys
+import tempfile
+import time
+
+import psutil
+from psutil import AIX
+from psutil import BSD
+from psutil import FREEBSD
+from psutil import LINUX
+from psutil import MACOS
+from psutil import NETBSD
+from psutil import OPENBSD
+from psutil import POSIX
+from psutil import SUNOS
+from psutil import WINDOWS
+from psutil._compat import long
+from psutil.tests import APPVEYOR
+from psutil.tests import ASCII_FS
+from psutil.tests import check_net_address
+from psutil.tests import DEVNULL
+from psutil.tests import enum
+from psutil.tests import get_test_subprocess
+from psutil.tests import HAS_BATTERY
+from psutil.tests import HAS_CPU_FREQ
+from psutil.tests import HAS_NET_IO_COUNTERS
+from psutil.tests import HAS_SENSORS_BATTERY
+from psutil.tests import HAS_SENSORS_FANS
+from psutil.tests import HAS_SENSORS_TEMPERATURES
+from psutil.tests import mock
+from psutil.tests import reap_children
+from psutil.tests import retry_before_failing
+from psutil.tests import run_test_module_by_name
+from psutil.tests import safe_rmpath
+from psutil.tests import TESTFN
+from psutil.tests import TESTFN_UNICODE
+from psutil.tests import TRAVIS
+from psutil.tests import unittest
+
+
+# ===================================================================
+# --- System-related API tests
+# ===================================================================
+
+
+class TestSystemAPIs(unittest.TestCase):
+    """Tests for system-related APIs."""
+
+    def setUp(self):
+        safe_rmpath(TESTFN)
+
+    def tearDown(self):
+        reap_children()
+
+    def test_process_iter(self):
+        self.assertIn(os.getpid(), [x.pid for x in psutil.process_iter()])
+        sproc = get_test_subprocess()
+        self.assertIn(sproc.pid, [x.pid for x in psutil.process_iter()])
+        p = psutil.Process(sproc.pid)
+        p.kill()
+        p.wait()
+        self.assertNotIn(sproc.pid, [x.pid for x in psutil.process_iter()])
+
+        with mock.patch('psutil.Process',
+                        side_effect=psutil.NoSuchProcess(os.getpid())):
+            self.assertEqual(list(psutil.process_iter()), [])
+        with mock.patch('psutil.Process',
+                        side_effect=psutil.AccessDenied(os.getpid())):
+            with self.assertRaises(psutil.AccessDenied):
+                list(psutil.process_iter())
+
+    def test_prcess_iter_w_params(self):
+        for p in psutil.process_iter(attrs=['pid']):
+            self.assertEqual(list(p.info.keys()), ['pid'])
+        with self.assertRaises(ValueError):
+            list(psutil.process_iter(attrs=['foo']))
+        with mock.patch("psutil._psplatform.Process.cpu_times",
+                        side_effect=psutil.AccessDenied(0, "")) as m:
+            for p in psutil.process_iter(attrs=["pid", "cpu_times"]):
+                self.assertIsNone(p.info['cpu_times'])
+                self.assertGreaterEqual(p.info['pid'], 0)
+            assert m.called
+        with mock.patch("psutil._psplatform.Process.cpu_times",
+                        side_effect=psutil.AccessDenied(0, "")) as m:
+            flag = object()
+            for p in psutil.process_iter(
+                    attrs=["pid", "cpu_times"], ad_value=flag):
+                self.assertIs(p.info['cpu_times'], flag)
+                self.assertGreaterEqual(p.info['pid'], 0)
+            assert m.called
+
+    def test_wait_procs(self):
+        def callback(p):
+            pids.append(p.pid)
+
+        pids = []
+        sproc1 = get_test_subprocess()
+        sproc2 = get_test_subprocess()
+        sproc3 = get_test_subprocess()
+        procs = [psutil.Process(x.pid) for x in (sproc1, sproc2, sproc3)]
+        self.assertRaises(ValueError, psutil.wait_procs, procs, timeout=-1)
+        self.assertRaises(TypeError, psutil.wait_procs, procs, callback=1)
+        t = time.time()
+        gone, alive = psutil.wait_procs(procs, timeout=0.01, callback=callback)
+
+        self.assertLess(time.time() - t, 0.5)
+        self.assertEqual(gone, [])
+        self.assertEqual(len(alive), 3)
+        self.assertEqual(pids, [])
+        for p in alive:
+            self.assertFalse(hasattr(p, 'returncode'))
+
+        @retry_before_failing(30)
+        def test(procs, callback):
+            gone, alive = psutil.wait_procs(procs, timeout=0.03,
+                                            callback=callback)
+            self.assertEqual(len(gone), 1)
+            self.assertEqual(len(alive), 2)
+            return gone, alive
+
+        sproc3.terminate()
+        gone, alive = test(procs, callback)
+        self.assertIn(sproc3.pid, [x.pid for x in gone])
+        if POSIX:
+            self.assertEqual(gone.pop().returncode, -signal.SIGTERM)
+        else:
+            self.assertEqual(gone.pop().returncode, 1)
+        self.assertEqual(pids, [sproc3.pid])
+        for p in alive:
+            self.assertFalse(hasattr(p, 'returncode'))
+
+        @retry_before_failing(30)
+        def test(procs, callback):
+            gone, alive = psutil.wait_procs(procs, timeout=0.03,
+                                            callback=callback)
+            self.assertEqual(len(gone), 3)
+            self.assertEqual(len(alive), 0)
+            return gone, alive
+
+        sproc1.terminate()
+        sproc2.terminate()
+        gone, alive = test(procs, callback)
+        self.assertEqual(set(pids), set([sproc1.pid, sproc2.pid, sproc3.pid]))
+        for p in gone:
+            self.assertTrue(hasattr(p, 'returncode'))
+
+    def test_wait_procs_no_timeout(self):
+        sproc1 = get_test_subprocess()
+        sproc2 = get_test_subprocess()
+        sproc3 = get_test_subprocess()
+        procs = [psutil.Process(x.pid) for x in (sproc1, sproc2, sproc3)]
+        for p in procs:
+            p.terminate()
+        gone, alive = psutil.wait_procs(procs)
+
+    def test_boot_time(self):
+        bt = psutil.boot_time()
+        self.assertIsInstance(bt, float)
+        self.assertGreater(bt, 0)
+        self.assertLess(bt, time.time())
+
+    @unittest.skipIf(not POSIX, 'POSIX only')
+    def test_PAGESIZE(self):
+        # pagesize is used internally to perform different calculations
+        # and it's determined by using SC_PAGE_SIZE; make sure
+        # getpagesize() returns the same value.
+        import resource
+        self.assertEqual(os.sysconf("SC_PAGE_SIZE"), resource.getpagesize())
+
+    def test_virtual_memory(self):
+        mem = psutil.virtual_memory()
+        assert mem.total > 0, mem
+        assert mem.available > 0, mem
+        assert 0 <= mem.percent <= 100, mem
+        assert mem.used > 0, mem
+        assert mem.free >= 0, mem
+        for name in mem._fields:
+            value = getattr(mem, name)
+            if name != 'percent':
+                self.assertIsInstance(value, (int, long))
+            if name != 'total':
+                if not value >= 0:
+                    self.fail("%r < 0 (%s)" % (name, value))
+                if value > mem.total:
+                    self.fail("%r > total (total=%s, %s=%s)"
+                              % (name, mem.total, name, value))
+
+    def test_swap_memory(self):
+        mem = psutil.swap_memory()
+        self.assertEqual(
+            mem._fields, ('total', 'used', 'free', 'percent', 'sin', 'sout'))
+
+        assert mem.total >= 0, mem
+        assert mem.used >= 0, mem
+        if mem.total > 0:
+            # likely a system with no swap partition
+            assert mem.free > 0, mem
+        else:
+            assert mem.free == 0, mem
+        assert 0 <= mem.percent <= 100, mem
+        assert mem.sin >= 0, mem
+        assert mem.sout >= 0, mem
+
+    def test_pid_exists(self):
+        sproc = get_test_subprocess()
+        self.assertTrue(psutil.pid_exists(sproc.pid))
+        p = psutil.Process(sproc.pid)
+        p.kill()
+        p.wait()
+        self.assertFalse(psutil.pid_exists(sproc.pid))
+        self.assertFalse(psutil.pid_exists(-1))
+        self.assertEqual(psutil.pid_exists(0), 0 in psutil.pids())
+
+    def test_pid_exists_2(self):
+        reap_children()
+        pids = psutil.pids()
+        for pid in pids:
+            try:
+                assert psutil.pid_exists(pid)
+            except AssertionError:
+                # in case the process disappeared in meantime fail only
+                # if it is no longer in psutil.pids()
+                time.sleep(.1)
+                if pid in psutil.pids():
+                    self.fail(pid)
+        pids = range(max(pids) + 5000, max(pids) + 6000)
+        for pid in pids:
+            self.assertFalse(psutil.pid_exists(pid), msg=pid)
+
+    def test_pids(self):
+        pidslist = psutil.pids()
+        procslist = [x.pid for x in psutil.process_iter()]
+        # make sure every pid is unique
+        self.assertEqual(sorted(set(pidslist)), pidslist)
+        self.assertEqual(pidslist, procslist)
+
+    def test_test(self):
+        # test for psutil.test() function
+        stdout = sys.stdout
+        sys.stdout = DEVNULL
+        try:
+            psutil.test()
+        finally:
+            sys.stdout = stdout
+
+    def test_cpu_count(self):
+        logical = psutil.cpu_count()
+        self.assertEqual(logical, len(psutil.cpu_times(percpu=True)))
+        self.assertGreaterEqual(logical, 1)
+        #
+        if os.path.exists("/proc/cpuinfo"):
+            with open("/proc/cpuinfo") as fd:
+                cpuinfo_data = fd.read()
+            if "physical id" not in cpuinfo_data:
+                raise unittest.SkipTest("cpuinfo doesn't include physical id")
+        physical = psutil.cpu_count(logical=False)
+        if WINDOWS and sys.getwindowsversion()[:2] <= (6, 1):  # <= Vista
+            self.assertIsNone(physical)
+        else:
+            self.assertGreaterEqual(physical, 1)
+            self.assertGreaterEqual(logical, physical)
+
+    def test_cpu_count_none(self):
+        # https://github.com/giampaolo/psutil/issues/1085
+        for val in (-1, 0, None):
+            with mock.patch('psutil._psplatform.cpu_count_logical',
+                            return_value=val) as m:
+                self.assertIsNone(psutil.cpu_count())
+                assert m.called
+            with mock.patch('psutil._psplatform.cpu_count_physical',
+                            return_value=val) as m:
+                self.assertIsNone(psutil.cpu_count(logical=False))
+                assert m.called
+
+    def test_cpu_times(self):
+        # Check type, value >= 0, str().
+        total = 0
+        times = psutil.cpu_times()
+        sum(times)
+        for cp_time in times:
+            self.assertIsInstance(cp_time, float)
+            self.assertGreaterEqual(cp_time, 0.0)
+            total += cp_time
+        self.assertEqual(total, sum(times))
+        str(times)
+        # CPU times are always supposed to increase over time
+        # or at least remain the same and that's because time
+        # cannot go backwards.
+        # Surprisingly sometimes this might not be the case (at
+        # least on Windows and Linux), see:
+        # https://github.com/giampaolo/psutil/issues/392
+        # https://github.com/giampaolo/psutil/issues/645
+        # if not WINDOWS:
+        #     last = psutil.cpu_times()
+        #     for x in range(100):
+        #         new = psutil.cpu_times()
+        #         for field in new._fields:
+        #             new_t = getattr(new, field)
+        #             last_t = getattr(last, field)
+        #             self.assertGreaterEqual(new_t, last_t,
+        #                                     msg="%s %s" % (new_t, last_t))
+        #         last = new
+
+    def test_cpu_times_time_increases(self):
+        # Make sure time increases between calls.
+        t1 = sum(psutil.cpu_times())
+        stop_at = time.time() + 1
+        while time.time() < stop_at:
+            t2 = sum(psutil.cpu_times())
+            if t2 > t1:
+                return
+        self.fail("time remained the same")
+
+    def test_per_cpu_times(self):
+        # Check type, value >= 0, str().
+        for times in psutil.cpu_times(percpu=True):
+            total = 0
+            sum(times)
+            for cp_time in times:
+                self.assertIsInstance(cp_time, float)
+                self.assertGreaterEqual(cp_time, 0.0)
+                total += cp_time
+            self.assertEqual(total, sum(times))
+            str(times)
+        self.assertEqual(len(psutil.cpu_times(percpu=True)[0]),
+                         len(psutil.cpu_times(percpu=False)))
+
+        # Note: in theory CPU times are always supposed to increase over
+        # time or remain the same but never go backwards. In practice
+        # sometimes this is not the case.
+        # This issue seemd to be afflict Windows:
+        # https://github.com/giampaolo/psutil/issues/392
+        # ...but it turns out also Linux (rarely) behaves the same.
+        # last = psutil.cpu_times(percpu=True)
+        # for x in range(100):
+        #     new = psutil.cpu_times(percpu=True)
+        #     for index in range(len(new)):
+        #         newcpu = new[index]
+        #         lastcpu = last[index]
+        #         for field in newcpu._fields:
+        #             new_t = getattr(newcpu, field)
+        #             last_t = getattr(lastcpu, field)
+        #             self.assertGreaterEqual(
+        #                 new_t, last_t, msg="%s %s" % (lastcpu, newcpu))
+        #     last = new
+
+    def test_per_cpu_times_2(self):
+        # Simulate some work load then make sure time have increased
+        # between calls.
+        tot1 = psutil.cpu_times(percpu=True)
+        stop_at = time.time() + 0.1
+        while True:
+            if time.time() >= stop_at:
+                break
+        tot2 = psutil.cpu_times(percpu=True)
+        for t1, t2 in zip(tot1, tot2):
+            t1, t2 = sum(t1), sum(t2)
+            difference = t2 - t1
+            if difference >= 0.05:
+                return
+        self.fail()
+
+    def test_cpu_times_comparison(self):
+        # Make sure the sum of all per cpu times is almost equal to
+        # base "one cpu" times.
+        base = psutil.cpu_times()
+        per_cpu = psutil.cpu_times(percpu=True)
+        summed_values = base._make([sum(num) for num in zip(*per_cpu)])
+        for field in base._fields:
+            self.assertAlmostEqual(
+                getattr(base, field), getattr(summed_values, field), delta=1)
+
+    def _test_cpu_percent(self, percent, last_ret, new_ret):
+        try:
+            self.assertIsInstance(percent, float)
+            self.assertGreaterEqual(percent, 0.0)
+            self.assertIsNot(percent, -0.0)
+            self.assertLessEqual(percent, 100.0 * psutil.cpu_count())
+        except AssertionError as err:
+            raise AssertionError("\n%s\nlast=%s\nnew=%s" % (
+                err, pprint.pformat(last_ret), pprint.pformat(new_ret)))
+
+    def test_cpu_percent(self):
+        last = psutil.cpu_percent(interval=0.001)
+        for x in range(100):
+            new = psutil.cpu_percent(interval=None)
+            self._test_cpu_percent(new, last, new)
+            last = new
+        with self.assertRaises(ValueError):
+            psutil.cpu_percent(interval=-1)
+
+    def test_per_cpu_percent(self):
+        last = psutil.cpu_percent(interval=0.001, percpu=True)
+        self.assertEqual(len(last), psutil.cpu_count())
+        for x in range(100):
+            new = psutil.cpu_percent(interval=None, percpu=True)
+            for percent in new:
+                self._test_cpu_percent(percent, last, new)
+            last = new
+        with self.assertRaises(ValueError):
+            psutil.cpu_percent(interval=-1, percpu=True)
+
+    def test_cpu_times_percent(self):
+        last = psutil.cpu_times_percent(interval=0.001)
+        for x in range(100):
+            new = psutil.cpu_times_percent(interval=None)
+            for percent in new:
+                self._test_cpu_percent(percent, last, new)
+            self._test_cpu_percent(sum(new), last, new)
+            last = new
+
+    def test_per_cpu_times_percent(self):
+        last = psutil.cpu_times_percent(interval=0.001, percpu=True)
+        self.assertEqual(len(last), psutil.cpu_count())
+        for x in range(100):
+            new = psutil.cpu_times_percent(interval=None, percpu=True)
+            for cpu in new:
+                for percent in cpu:
+                    self._test_cpu_percent(percent, last, new)
+                self._test_cpu_percent(sum(cpu), last, new)
+            last = new
+
+    def test_per_cpu_times_percent_negative(self):
+        # see: https://github.com/giampaolo/psutil/issues/645
+        psutil.cpu_times_percent(percpu=True)
+        zero_times = [x._make([0 for x in range(len(x._fields))])
+                      for x in psutil.cpu_times(percpu=True)]
+        with mock.patch('psutil.cpu_times', return_value=zero_times):
+            for cpu in psutil.cpu_times_percent(percpu=True):
+                for percent in cpu:
+                    self._test_cpu_percent(percent, None, None)
+
+    def test_disk_usage(self):
+        usage = psutil.disk_usage(os.getcwd())
+        self.assertEqual(usage._fields, ('total', 'used', 'free', 'percent'))
+
+        assert usage.total > 0, usage
+        assert usage.used > 0, usage
+        assert usage.free > 0, usage
+        assert usage.total > usage.used, usage
+        assert usage.total > usage.free, usage
+        assert 0 <= usage.percent <= 100, usage.percent
+        if hasattr(shutil, 'disk_usage'):
+            # py >= 3.3, see: http://bugs.python.org/issue12442
+            shutil_usage = shutil.disk_usage(os.getcwd())
+            tolerance = 5 * 1024 * 1024  # 5MB
+            self.assertEqual(usage.total, shutil_usage.total)
+            self.assertAlmostEqual(usage.free, shutil_usage.free,
+                                   delta=tolerance)
+            self.assertAlmostEqual(usage.used, shutil_usage.used,
+                                   delta=tolerance)
+
+        # if path does not exist OSError ENOENT is expected across
+        # all platforms
+        fname = tempfile.mktemp()
+        with self.assertRaises(OSError) as exc:
+            psutil.disk_usage(fname)
+        self.assertEqual(exc.exception.errno, errno.ENOENT)
+
+    def test_disk_usage_unicode(self):
+        # See: https://github.com/giampaolo/psutil/issues/416
+        if ASCII_FS:
+            with self.assertRaises(UnicodeEncodeError):
+                psutil.disk_usage(TESTFN_UNICODE)
+
+    def test_disk_usage_bytes(self):
+        psutil.disk_usage(b'.')
+
+    def test_disk_partitions(self):
+        # all = False
+        ls = psutil.disk_partitions(all=False)
+        # on travis we get:
+        #     self.assertEqual(p.cpu_affinity(), [n])
+        # AssertionError: Lists differ: [0, 1, 2, 3, 4, 5, 6, 7,... != [0]
+        self.assertTrue(ls, msg=ls)
+        for disk in ls:
+            self.assertIsInstance(disk.device, str)
+            self.assertIsInstance(disk.mountpoint, str)
+            self.assertIsInstance(disk.fstype, str)
+            self.assertIsInstance(disk.opts, str)
+            if WINDOWS and 'cdrom' in disk.opts:
+                continue
+            if not POSIX:
+                assert os.path.exists(disk.device), disk
+            else:
+                # we cannot make any assumption about this, see:
+                # http://goo.gl/p9c43
+                disk.device
+            if SUNOS or TRAVIS:
+                # on solaris apparently mount points can also be files
+                assert os.path.exists(disk.mountpoint), disk
+            else:
+                assert os.path.isdir(disk.mountpoint), disk
+            assert disk.fstype, disk
+
+        # all = True
+        ls = psutil.disk_partitions(all=True)
+        self.assertTrue(ls, msg=ls)
+        for disk in psutil.disk_partitions(all=True):
+            if not WINDOWS:
+                try:
+                    os.stat(disk.mountpoint)
+                except OSError as err:
+                    if TRAVIS and MACOS and err.errno == errno.EIO:
+                        continue
+                    # http://mail.python.org/pipermail/python-dev/
+                    #     2012-June/120787.html
+                    if err.errno not in (errno.EPERM, errno.EACCES):
+                        raise
+                else:
+                    assert os.path.exists(disk.mountpoint), disk
+            self.assertIsInstance(disk.fstype, str)
+            self.assertIsInstance(disk.opts, str)
+
+        def find_mount_point(path):
+            path = os.path.abspath(path)
+            while not os.path.ismount(path):
+                path = os.path.dirname(path)
+            return path.lower()
+
+        mount = find_mount_point(__file__)
+        mounts = [x.mountpoint.lower() for x in
+                  psutil.disk_partitions(all=True)]
+        self.assertIn(mount, mounts)
+        psutil.disk_usage(mount)
+
+    @unittest.skipIf(not HAS_NET_IO_COUNTERS, 'not supported')
+    def test_net_io_counters(self):
+        def check_ntuple(nt):
+            self.assertEqual(nt[0], nt.bytes_sent)
+            self.assertEqual(nt[1], nt.bytes_recv)
+            self.assertEqual(nt[2], nt.packets_sent)
+            self.assertEqual(nt[3], nt.packets_recv)
+            self.assertEqual(nt[4], nt.errin)
+            self.assertEqual(nt[5], nt.errout)
+            self.assertEqual(nt[6], nt.dropin)
+            self.assertEqual(nt[7], nt.dropout)
+            assert nt.bytes_sent >= 0, nt
+            assert nt.bytes_recv >= 0, nt
+            assert nt.packets_sent >= 0, nt
+            assert nt.packets_recv >= 0, nt
+            assert nt.errin >= 0, nt
+            assert nt.errout >= 0, nt
+            assert nt.dropin >= 0, nt
+            assert nt.dropout >= 0, nt
+
+        ret = psutil.net_io_counters(pernic=False)
+        check_ntuple(ret)
+        ret = psutil.net_io_counters(pernic=True)
+        self.assertNotEqual(ret, [])
+        for key in ret:
+            self.assertTrue(key)
+            self.assertIsInstance(key, str)
+            check_ntuple(ret[key])
+
+    @unittest.skipIf(not HAS_NET_IO_COUNTERS, 'not supported')
+    def test_net_io_counters_no_nics(self):
+        # Emulate a case where no NICs are installed, see:
+        # https://github.com/giampaolo/psutil/issues/1062
+        with mock.patch('psutil._psplatform.net_io_counters',
+                        return_value={}) as m:
+            self.assertIsNone(psutil.net_io_counters(pernic=False))
+            self.assertEqual(psutil.net_io_counters(pernic=True), {})
+            assert m.called
+
+    def test_net_if_addrs(self):
+        nics = psutil.net_if_addrs()
+        assert nics, nics
+
+        nic_stats = psutil.net_if_stats()
+
+        # Not reliable on all platforms (net_if_addrs() reports more
+        # interfaces).
+        # self.assertEqual(sorted(nics.keys()),
+        #                  sorted(psutil.net_io_counters(pernic=True).keys()))
+
+        families = set([socket.AF_INET, socket.AF_INET6, psutil.AF_LINK])
+        for nic, addrs in nics.items():
+            self.assertIsInstance(nic, str)
+            self.assertEqual(len(set(addrs)), len(addrs))
+            for addr in addrs:
+                self.assertIsInstance(addr.family, int)
+                self.assertIsInstance(addr.address, str)
+                self.assertIsInstance(addr.netmask, (str, type(None)))
+                self.assertIsInstance(addr.broadcast, (str, type(None)))
+                self.assertIn(addr.family, families)
+                if sys.version_info >= (3, 4):
+                    self.assertIsInstance(addr.family, enum.IntEnum)
+                if nic_stats[nic].isup:
+                    # Do not test binding to addresses of interfaces
+                    # that are down
+                    if addr.family == socket.AF_INET:
+                        s = socket.socket(addr.family)
+                        with contextlib.closing(s):
+                            s.bind((addr.address, 0))
+                    elif addr.family == socket.AF_INET6:
+                        info = socket.getaddrinfo(
+                            addr.address, 0, socket.AF_INET6,
+                            socket.SOCK_STREAM, 0, socket.AI_PASSIVE)[0]
+                        af, socktype, proto, canonname, sa = info
+                        s = socket.socket(af, socktype, proto)
+                        with contextlib.closing(s):
+                            s.bind(sa)
+                for ip in (addr.address, addr.netmask, addr.broadcast,
+                           addr.ptp):
+                    if ip is not None:
+                        # TODO: skip AF_INET6 for now because I get:
+                        # AddressValueError: Only hex digits permitted in
+                        # u'c6f3%lxcbr0' in u'fe80::c8e0:fff:fe54:c6f3%lxcbr0'
+                        if addr.family != socket.AF_INET6:
+                            check_net_address(ip, addr.family)
+                # broadcast and ptp addresses are mutually exclusive
+                if addr.broadcast:
+                    self.assertIsNone(addr.ptp)
+                elif addr.ptp:
+                    self.assertIsNone(addr.broadcast)
+
+        if BSD or MACOS or SUNOS:
+            if hasattr(socket, "AF_LINK"):
+                self.assertEqual(psutil.AF_LINK, socket.AF_LINK)
+        elif LINUX:
+            self.assertEqual(psutil.AF_LINK, socket.AF_PACKET)
+        elif WINDOWS:
+            self.assertEqual(psutil.AF_LINK, -1)
+
+    def test_net_if_addrs_mac_null_bytes(self):
+        # Simulate that the underlying C function returns an incomplete
+        # MAC address. psutil is supposed to fill it with null bytes.
+        # https://github.com/giampaolo/psutil/issues/786
+        if POSIX:
+            ret = [('em1', psutil.AF_LINK, '06:3d:29', None, None, None)]
+        else:
+            ret = [('em1', -1, '06-3d-29', None, None, None)]
+        with mock.patch('psutil._psplatform.net_if_addrs',
+                        return_value=ret) as m:
+            addr = psutil.net_if_addrs()['em1'][0]
+            assert m.called
+            if POSIX:
+                self.assertEqual(addr.address, '06:3d:29:00:00:00')
+            else:
+                self.assertEqual(addr.address, '06-3d-29-00-00-00')
+
+    @unittest.skipIf(TRAVIS, "unreliable on TRAVIS")  # raises EPERM
+    def test_net_if_stats(self):
+        nics = psutil.net_if_stats()
+        assert nics, nics
+        all_duplexes = (psutil.NIC_DUPLEX_FULL,
+                        psutil.NIC_DUPLEX_HALF,
+                        psutil.NIC_DUPLEX_UNKNOWN)
+        for name, stats in nics.items():
+            self.assertIsInstance(name, str)
+            isup, duplex, speed, mtu = stats
+            self.assertIsInstance(isup, bool)
+            self.assertIn(duplex, all_duplexes)
+            self.assertIn(duplex, all_duplexes)
+            self.assertGreaterEqual(speed, 0)
+            self.assertGreaterEqual(mtu, 0)
+
+    @unittest.skipIf(not (LINUX or BSD or MACOS),
+                     "LINUX or BSD or MACOS specific")
+    def test_net_if_stats_enodev(self):
+        # See: https://github.com/giampaolo/psutil/issues/1279
+        with mock.patch('psutil._psutil_posix.net_if_mtu',
+                        side_effect=OSError(errno.ENODEV, "")) as m:
+            ret = psutil.net_if_stats()
+            self.assertEqual(ret, {})
+            assert m.called
+
+    @unittest.skipIf(LINUX and not os.path.exists('/proc/diskstats'),
+                     '/proc/diskstats not available on this linux version')
+    @unittest.skipIf(APPVEYOR and psutil.disk_io_counters() is None,
+                     "unreliable on APPVEYOR")  # no visible disks
+    def test_disk_io_counters(self):
+        def check_ntuple(nt):
+            self.assertEqual(nt[0], nt.read_count)
+            self.assertEqual(nt[1], nt.write_count)
+            self.assertEqual(nt[2], nt.read_bytes)
+            self.assertEqual(nt[3], nt.write_bytes)
+            if not (OPENBSD or NETBSD):
+                self.assertEqual(nt[4], nt.read_time)
+                self.assertEqual(nt[5], nt.write_time)
+                if LINUX:
+                    self.assertEqual(nt[6], nt.read_merged_count)
+                    self.assertEqual(nt[7], nt.write_merged_count)
+                    self.assertEqual(nt[8], nt.busy_time)
+                elif FREEBSD:
+                    self.assertEqual(nt[6], nt.busy_time)
+            for name in nt._fields:
+                assert getattr(nt, name) >= 0, nt
+
+        ret = psutil.disk_io_counters(perdisk=False)
+        assert ret is not None, "no disks on this system?"
+        check_ntuple(ret)
+        ret = psutil.disk_io_counters(perdisk=True)
+        # make sure there are no duplicates
+        self.assertEqual(len(ret), len(set(ret)))
+        for key in ret:
+            assert key, key
+            check_ntuple(ret[key])
+
+    def test_disk_io_counters_no_disks(self):
+        # Emulate a case where no disks are installed, see:
+        # https://github.com/giampaolo/psutil/issues/1062
+        with mock.patch('psutil._psplatform.disk_io_counters',
+                        return_value={}) as m:
+            self.assertIsNone(psutil.disk_io_counters(perdisk=False))
+            self.assertEqual(psutil.disk_io_counters(perdisk=True), {})
+            assert m.called
+
+    # can't find users on APPVEYOR or TRAVIS
+    @unittest.skipIf(APPVEYOR or TRAVIS and not psutil.users(),
+                     "unreliable on APPVEYOR or TRAVIS")
+    def test_users(self):
+        users = psutil.users()
+        self.assertNotEqual(users, [])
+        for user in users:
+            assert user.name, user
+            self.assertIsInstance(user.name, str)
+            self.assertIsInstance(user.terminal, (str, type(None)))
+            if user.host is not None:
+                self.assertIsInstance(user.host, (str, type(None)))
+            user.terminal
+            user.host
+            assert user.started > 0.0, user
+            datetime.datetime.fromtimestamp(user.started)
+            if WINDOWS or OPENBSD:
+                self.assertIsNone(user.pid)
+            else:
+                psutil.Process(user.pid)
+
+    def test_cpu_stats(self):
+        # Tested more extensively in per-platform test modules.
+        infos = psutil.cpu_stats()
+        self.assertEqual(
+            infos._fields,
+            ('ctx_switches', 'interrupts', 'soft_interrupts', 'syscalls'))
+        for name in infos._fields:
+            value = getattr(infos, name)
+            self.assertGreaterEqual(value, 0)
+            # on AIX, ctx_switches is always 0
+            if not AIX and name in ('ctx_switches', 'interrupts'):
+                self.assertGreater(value, 0)
+
+    @unittest.skipIf(not HAS_CPU_FREQ, "not suported")
+    def test_cpu_freq(self):
+        def check_ls(ls):
+            for nt in ls:
+                self.assertEqual(nt._fields, ('current', 'min', 'max'))
+                self.assertLessEqual(nt.current, nt.max)
+                for name in nt._fields:
+                    value = getattr(nt, name)
+                    self.assertIsInstance(value, (int, long, float))
+                    self.assertGreaterEqual(value, 0)
+
+        ls = psutil.cpu_freq(percpu=True)
+        if TRAVIS and not ls:
+            raise self.skipTest("skipped on Travis")
+        if FREEBSD and not ls:
+            raise self.skipTest("returns empty list on FreeBSD")
+
+        assert ls, ls
+        check_ls([psutil.cpu_freq(percpu=False)])
+
+        if LINUX:
+            self.assertEqual(len(ls), psutil.cpu_count())
+
+    def test_os_constants(self):
+        names = ["POSIX", "WINDOWS", "LINUX", "MACOS", "FREEBSD", "OPENBSD",
+                 "NETBSD", "BSD", "SUNOS"]
+        for name in names:
+            self.assertIsInstance(getattr(psutil, name), bool, msg=name)
+
+        if os.name == 'posix':
+            assert psutil.POSIX
+            assert not psutil.WINDOWS
+            names.remove("POSIX")
+            if "linux" in sys.platform.lower():
+                assert psutil.LINUX
+                names.remove("LINUX")
+            elif "bsd" in sys.platform.lower():
+                assert psutil.BSD
+                self.assertEqual([psutil.FREEBSD, psutil.OPENBSD,
+                                  psutil.NETBSD].count(True), 1)
+                names.remove("BSD")
+                names.remove("FREEBSD")
+                names.remove("OPENBSD")
+                names.remove("NETBSD")
+            elif "sunos" in sys.platform.lower() or \
+                    "solaris" in sys.platform.lower():
+                assert psutil.SUNOS
+                names.remove("SUNOS")
+            elif "darwin" in sys.platform.lower():
+                assert psutil.MACOS
+                names.remove("MACOS")
+        else:
+            assert psutil.WINDOWS
+            assert not psutil.POSIX
+            names.remove("WINDOWS")
+
+        # assert all other constants are set to False
+        for name in names:
+            self.assertIs(getattr(psutil, name), False, msg=name)
+
+    @unittest.skipIf(not HAS_SENSORS_TEMPERATURES, "not supported")
+    def test_sensors_temperatures(self):
+        temps = psutil.sensors_temperatures()
+        for name, entries in temps.items():
+            self.assertIsInstance(name, str)
+            for entry in entries:
+                self.assertIsInstance(entry.label, str)
+                if entry.current is not None:
+                    self.assertGreaterEqual(entry.current, 0)
+                if entry.high is not None:
+                    self.assertGreaterEqual(entry.high, 0)
+                if entry.critical is not None:
+                    self.assertGreaterEqual(entry.critical, 0)
+
+    @unittest.skipIf(not HAS_SENSORS_TEMPERATURES, "not supported")
+    def test_sensors_temperatures_fahreneit(self):
+        d = {'coretemp': [('label', 50.0, 60.0, 70.0)]}
+        with mock.patch("psutil._psplatform.sensors_temperatures",
+                        return_value=d) as m:
+            temps = psutil.sensors_temperatures(
+                fahrenheit=True)['coretemp'][0]
+            assert m.called
+            self.assertEqual(temps.current, 122.0)
+            self.assertEqual(temps.high, 140.0)
+            self.assertEqual(temps.critical, 158.0)
+
+    @unittest.skipIf(not HAS_SENSORS_BATTERY, "not supported")
+    @unittest.skipIf(not HAS_BATTERY, "no battery")
+    def test_sensors_battery(self):
+        ret = psutil.sensors_battery()
+        self.assertGreaterEqual(ret.percent, 0)
+        self.assertLessEqual(ret.percent, 100)
+        if ret.secsleft not in (psutil.POWER_TIME_UNKNOWN,
+                                psutil.POWER_TIME_UNLIMITED):
+            self.assertGreaterEqual(ret.secsleft, 0)
+        else:
+            if ret.secsleft == psutil.POWER_TIME_UNLIMITED:
+                self.assertTrue(ret.power_plugged)
+        self.assertIsInstance(ret.power_plugged, bool)
+
+    @unittest.skipIf(not HAS_SENSORS_FANS, "not supported")
+    def test_sensors_fans(self):
+        fans = psutil.sensors_fans()
+        for name, entries in fans.items():
+            self.assertIsInstance(name, str)
+            for entry in entries:
+                self.assertIsInstance(entry.label, str)
+                self.assertIsInstance(entry.current, (int, long))
+                self.assertGreaterEqual(entry.current, 0)
+
+
+if __name__ == '__main__':
+    run_test_module_by_name(__file__)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_unicode.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_unicode.py
new file mode 100644
index 00000000..cfa8dd92
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_unicode.py
@@ -0,0 +1,370 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""
+Notes about unicode handling in psutil
+======================================
+
+In psutil these are the APIs returning or dealing with a string
+('not tested' means they are not tested to deal with non-ASCII strings):
+
+* Process.cmdline()
+* Process.connections('unix')
+* Process.cwd()
+* Process.environ()
+* Process.exe()
+* Process.memory_maps()
+* Process.name()
+* Process.open_files()
+* Process.username()             (not tested)
+
+* disk_io_counters()             (not tested)
+* disk_partitions()              (not tested)
+* disk_usage(str)
+* net_connections('unix')
+* net_if_addrs()                 (not tested)
+* net_if_stats()                 (not tested)
+* net_io_counters()              (not tested)
+* sensors_fans()                 (not tested)
+* sensors_temperatures()         (not tested)
+* users()                        (not tested)
+
+* WindowsService.binpath()       (not tested)
+* WindowsService.description()   (not tested)
+* WindowsService.display_name()  (not tested)
+* WindowsService.name()          (not tested)
+* WindowsService.status()        (not tested)
+* WindowsService.username()      (not tested)
+
+In here we create a unicode path with a funky non-ASCII name and (where
+possible) make psutil return it back (e.g. on name(), exe(), open_files(),
+etc.) and make sure that:
+
+* psutil never crashes with UnicodeDecodeError
+* the returned path matches
+
+For a detailed explanation of how psutil handles unicode see:
+- https://github.com/giampaolo/psutil/issues/1040
+- http://psutil.readthedocs.io/#unicode
+"""
+
+import os
+import traceback
+import warnings
+from contextlib import closing
+
+from psutil import BSD
+from psutil import MACOS
+from psutil import OPENBSD
+from psutil import POSIX
+from psutil import WINDOWS
+from psutil._compat import PY3
+from psutil._compat import u
+from psutil.tests import APPVEYOR
+from psutil.tests import ASCII_FS
+from psutil.tests import bind_unix_socket
+from psutil.tests import chdir
+from psutil.tests import copyload_shared_lib
+from psutil.tests import create_exe
+from psutil.tests import get_test_subprocess
+from psutil.tests import HAS_CONNECTIONS_UNIX
+from psutil.tests import HAS_ENVIRON
+from psutil.tests import HAS_MEMORY_MAPS
+from psutil.tests import mock
+from psutil.tests import PYPY
+from psutil.tests import reap_children
+from psutil.tests import run_test_module_by_name
+from psutil.tests import safe_mkdir
+from psutil.tests import safe_rmpath as _safe_rmpath
+from psutil.tests import skip_on_access_denied
+from psutil.tests import TESTFILE_PREFIX
+from psutil.tests import TESTFN
+from psutil.tests import TESTFN_UNICODE
+from psutil.tests import TRAVIS
+from psutil.tests import unittest
+from psutil.tests import unix_socket_path
+import psutil
+
+
+def safe_rmpath(path):
+    if APPVEYOR:
+        # TODO - this is quite random and I'm not sure why it happens,
+        # nor I can reproduce it locally:
+        # https://ci.appveyor.com/project/giampaolo/psutil/build/job/
+        #     jiq2cgd6stsbtn60
+        # safe_rmpath() happens after reap_children() so this is weird
+        # Perhaps wait_procs() on Windows is broken? Maybe because
+        # of STILL_ACTIVE?
+        # https://github.com/giampaolo/psutil/blob/
+        #     68c7a70728a31d8b8b58f4be6c4c0baa2f449eda/psutil/arch/
+        #     windows/process_info.c#L146
+        try:
+            return _safe_rmpath(path)
+        except WindowsError:
+            traceback.print_exc()
+    else:
+        return _safe_rmpath(path)
+
+
+def subprocess_supports_unicode(name):
+    """Return True if both the fs and the subprocess module can
+    deal with a unicode file name.
+    """
+    if PY3:
+        return True
+    try:
+        safe_rmpath(name)
+        create_exe(name)
+        get_test_subprocess(cmd=[name])
+    except UnicodeEncodeError:
+        return False
+    else:
+        return True
+    finally:
+        reap_children()
+
+
+# An invalid unicode string.
+if PY3:
+    INVALID_NAME = (TESTFN.encode('utf8') + b"f\xc0\x80").decode(
+        'utf8', 'surrogateescape')
+else:
+    INVALID_NAME = TESTFN + "f\xc0\x80"
+
+
+# ===================================================================
+# FS APIs
+# ===================================================================
+
+
+class _BaseFSAPIsTests(object):
+    funky_name = None
+
+    @classmethod
+    def setUpClass(cls):
+        safe_rmpath(cls.funky_name)
+        create_exe(cls.funky_name)
+
+    @classmethod
+    def tearDownClass(cls):
+        reap_children()
+        safe_rmpath(cls.funky_name)
+
+    def tearDown(self):
+        reap_children()
+
+    def expect_exact_path_match(self):
+        raise NotImplementedError("must be implemented in subclass")
+
+    def test_proc_exe(self):
+        subp = get_test_subprocess(cmd=[self.funky_name])
+        p = psutil.Process(subp.pid)
+        exe = p.exe()
+        self.assertIsInstance(exe, str)
+        if self.expect_exact_path_match():
+            self.assertEqual(exe, self.funky_name)
+
+    def test_proc_name(self):
+        subp = get_test_subprocess(cmd=[self.funky_name])
+        if WINDOWS:
+            # On Windows name() is determined from exe() first, because
+            # it's faster; we want to overcome the internal optimization
+            # and test name() instead of exe().
+            with mock.patch("psutil._psplatform.cext.proc_exe",
+                            side_effect=psutil.AccessDenied(os.getpid())) as m:
+                name = psutil.Process(subp.pid).name()
+                assert m.called
+        else:
+            name = psutil.Process(subp.pid).name()
+        self.assertIsInstance(name, str)
+        if self.expect_exact_path_match():
+            self.assertEqual(name, os.path.basename(self.funky_name))
+
+    def test_proc_cmdline(self):
+        subp = get_test_subprocess(cmd=[self.funky_name])
+        p = psutil.Process(subp.pid)
+        cmdline = p.cmdline()
+        for part in cmdline:
+            self.assertIsInstance(part, str)
+        if self.expect_exact_path_match():
+            self.assertEqual(cmdline, [self.funky_name])
+
+    def test_proc_cwd(self):
+        dname = self.funky_name + "2"
+        self.addCleanup(safe_rmpath, dname)
+        safe_mkdir(dname)
+        with chdir(dname):
+            p = psutil.Process()
+            cwd = p.cwd()
+        self.assertIsInstance(p.cwd(), str)
+        if self.expect_exact_path_match():
+            self.assertEqual(cwd, dname)
+
+    def test_proc_open_files(self):
+        p = psutil.Process()
+        start = set(p.open_files())
+        with open(self.funky_name, 'rb'):
+            new = set(p.open_files())
+        path = (new - start).pop().path
+        self.assertIsInstance(path, str)
+        if BSD and not path:
+            # XXX - see https://github.com/giampaolo/psutil/issues/595
+            return self.skipTest("open_files on BSD is broken")
+        if self.expect_exact_path_match():
+            self.assertEqual(os.path.normcase(path),
+                             os.path.normcase(self.funky_name))
+
+    @unittest.skipIf(not POSIX, "POSIX only")
+    def test_proc_connections(self):
+        suffix = os.path.basename(self.funky_name)
+        with unix_socket_path(suffix=suffix) as name:
+            try:
+                sock = bind_unix_socket(name)
+            except UnicodeEncodeError:
+                if PY3:
+                    raise
+                else:
+                    raise unittest.SkipTest("not supported")
+            with closing(sock):
+                conn = psutil.Process().connections('unix')[0]
+                self.assertIsInstance(conn.laddr, str)
+                # AF_UNIX addr not set on OpenBSD
+                if not OPENBSD:
+                    self.assertEqual(conn.laddr, name)
+
+    @unittest.skipIf(not POSIX, "POSIX only")
+    @unittest.skipIf(not HAS_CONNECTIONS_UNIX, "can't list UNIX sockets")
+    @skip_on_access_denied()
+    def test_net_connections(self):
+        def find_sock(cons):
+            for conn in cons:
+                if os.path.basename(conn.laddr).startswith(TESTFILE_PREFIX):
+                    return conn
+            raise ValueError("connection not found")
+
+        suffix = os.path.basename(self.funky_name)
+        with unix_socket_path(suffix=suffix) as name:
+            try:
+                sock = bind_unix_socket(name)
+            except UnicodeEncodeError:
+                if PY3:
+                    raise
+                else:
+                    raise unittest.SkipTest("not supported")
+            with closing(sock):
+                cons = psutil.net_connections(kind='unix')
+                # AF_UNIX addr not set on OpenBSD
+                if not OPENBSD:
+                    conn = find_sock(cons)
+                    self.assertIsInstance(conn.laddr, str)
+                    self.assertEqual(conn.laddr, name)
+
+    def test_disk_usage(self):
+        dname = self.funky_name + "2"
+        self.addCleanup(safe_rmpath, dname)
+        safe_mkdir(dname)
+        psutil.disk_usage(dname)
+
+    @unittest.skipIf(not HAS_MEMORY_MAPS, "not supported")
+    @unittest.skipIf(not PY3, "ctypes does not support unicode on PY2")
+    def test_memory_maps(self):
+        # XXX: on Python 2, using ctypes.CDLL with a unicode path
+        # opens a message box which blocks the test run.
+        with copyload_shared_lib(dst_prefix=self.funky_name) as funky_path:
+            def normpath(p):
+                return os.path.realpath(os.path.normcase(p))
+            libpaths = [normpath(x.path)
+                        for x in psutil.Process().memory_maps()]
+            # ...just to have a clearer msg in case of failure
+            libpaths = [x for x in libpaths if TESTFILE_PREFIX in x]
+            self.assertIn(normpath(funky_path), libpaths)
+            for path in libpaths:
+                self.assertIsInstance(path, str)
+
+
+# https://travis-ci.org/giampaolo/psutil/jobs/440073249
+@unittest.skipIf(PYPY and TRAVIS, "unreliable on PYPY + TRAVIS")
+@unittest.skipIf(MACOS and TRAVIS, "unreliable on TRAVIS")  # TODO
+@unittest.skipIf(ASCII_FS, "ASCII fs")
+@unittest.skipIf(not subprocess_supports_unicode(TESTFN_UNICODE),
+                 "subprocess can't deal with unicode")
+class TestFSAPIs(_BaseFSAPIsTests, unittest.TestCase):
+    """Test FS APIs with a funky, valid, UTF8 path name."""
+    funky_name = TESTFN_UNICODE
+
+    @classmethod
+    def expect_exact_path_match(cls):
+        # Do not expect psutil to correctly handle unicode paths on
+        # Python 2 if os.listdir() is not able either.
+        if PY3:
+            return True
+        else:
+            here = '.' if isinstance(cls.funky_name, str) else u('.')
+            with warnings.catch_warnings():
+                warnings.simplefilter("ignore")
+                return cls.funky_name in os.listdir(here)
+
+
+@unittest.skipIf(PYPY and TRAVIS, "unreliable on PYPY + TRAVIS")
+@unittest.skipIf(MACOS and TRAVIS, "unreliable on TRAVIS")  # TODO
+@unittest.skipIf(not subprocess_supports_unicode(INVALID_NAME),
+                 "subprocess can't deal with invalid unicode")
+class TestFSAPIsWithInvalidPath(_BaseFSAPIsTests, unittest.TestCase):
+    """Test FS APIs with a funky, invalid path name."""
+    funky_name = INVALID_NAME
+
+    @classmethod
+    def expect_exact_path_match(cls):
+        # Invalid unicode names are supposed to work on Python 2.
+        return True
+
+
+@unittest.skipIf(not WINDOWS, "WINDOWS only")
+class TestWinProcessName(unittest.TestCase):
+
+    def test_name_type(self):
+        # On Windows name() is determined from exe() first, because
+        # it's faster; we want to overcome the internal optimization
+        # and test name() instead of exe().
+        with mock.patch("psutil._psplatform.cext.proc_exe",
+                        side_effect=psutil.AccessDenied(os.getpid())) as m:
+            self.assertIsInstance(psutil.Process().name(), str)
+            assert m.called
+
+
+# ===================================================================
+# Non fs APIs
+# ===================================================================
+
+
+class TestNonFSAPIS(unittest.TestCase):
+    """Unicode tests for non fs-related APIs."""
+
+    def tearDown(self):
+        reap_children()
+
+    @unittest.skipIf(not HAS_ENVIRON, "not supported")
+    def test_proc_environ(self):
+        # Note: differently from others, this test does not deal
+        # with fs paths. On Python 2 subprocess module is broken as
+        # it's not able to handle with non-ASCII env vars, so
+        # we use "è", which is part of the extended ASCII table
+        # (unicode point <= 255).
+        env = os.environ.copy()
+        funky_str = TESTFN_UNICODE if PY3 else 'è'
+        env['FUNNY_ARG'] = funky_str
+        sproc = get_test_subprocess(env=env)
+        p = psutil.Process(sproc.pid)
+        env = p.environ()
+        for k, v in env.items():
+            self.assertIsInstance(k, str)
+            self.assertIsInstance(v, str)
+        self.assertEqual(env['FUNNY_ARG'], funky_str)
+
+
+if __name__ == '__main__':
+    run_test_module_by_name(__file__)
diff --git a/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_windows.py b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_windows.py
new file mode 100644
index 00000000..222d8636
--- /dev/null
+++ b/WPy32-3720/python-3.7.2/Lib/site-packages/psutil/tests/test_windows.py
@@ -0,0 +1,868 @@
+#!/usr/bin/env python
+# -*- coding: UTF-8 -*
+
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Windows specific tests."""
+
+import datetime
+import errno
+import glob
+import os
+import platform
+import re
+import signal
+import subprocess
+import sys
+import time
+import warnings
+
+import psutil
+from psutil import WINDOWS
+from psutil.tests import APPVEYOR
+from psutil.tests import get_test_subprocess
+from psutil.tests import HAS_BATTERY
+from psutil.tests import mock
+from psutil.tests import reap_children
+from psutil.tests import retry_before_failing
+from psutil.tests import run_test_module_by_name
+from psutil.tests import sh
+from psutil.tests import unittest
+
+with warnings.catch_warnings():
+    warnings.simplefilter("ignore")
+    try:
+        import win32api  # requires "pip install pypiwin32"
+        import win32con
+        import win32process
+        import wmi  # requires "pip install wmi" / "make setup-dev-env"
+    except ImportError:
+        if os.name == 'nt':
+            raise
+
+
+cext = psutil._psplatform.cext
+
+# are we a 64 bit process
+IS_64_BIT = sys.maxsize > 2**32
+
+
+def wrap_exceptions(fun):
+    def wrapper(self, *args, **kwargs):
+        try:
+            return fun(self, *args, **kwargs)
+        except OSError as err:
+            from psutil._pswindows import ACCESS_DENIED_SET
+            if err.errno in ACCESS_DENIED_SET:
+                raise psutil.AccessDenied(None, None)
+            if err.errno == errno.ESRCH:
+                raise psutil.NoSuchProcess(None, None)
+            raise
+    return wrapper
+
+
+# ===================================================================
+# System APIs
+# ===================================================================
+
+
+@unittest.skipIf(not WINDOWS, "WINDOWS only")
+class TestCpuAPIs(unittest.TestCase):
+
+    @unittest.skipIf('NUMBER_OF_PROCESSORS' not in os.environ,
+                     'NUMBER_OF_PROCESSORS env var is not available')
+    def test_cpu_count_vs_NUMBER_OF_PROCESSORS(self):
+        # Will likely fail on many-cores systems:
+        # https://stackoverflow.com/questions/31209256
+        num_cpus = int(os.environ['NUMBER_OF_PROCESSORS'])
+        self.assertEqual(num_cpus, psutil.cpu_count())
+
+    def test_cpu_count_vs_GetSystemInfo(self):
+        # Will likely fail on many-cores systems:
+        # https://stackoverflow.com/questions/31209256
+        sys_value = win32api.GetSystemInfo()[5]
+        psutil_value = psutil.cpu_count()
+        self.assertEqual(sys_value, psutil_value)
+
+    def test_cpu_count_logical_vs_wmi(self):
+        w = wmi.WMI()
+        proc = w.Win32_Processor()[0]
+        self.assertEqual(psutil.cpu_count(), proc.NumberOfLogicalProcessors)
+
+    def test_cpu_count_phys_vs_wmi(self):
+        w = wmi.WMI()
+        proc = w.Win32_Processor()[0]
+        self.assertEqual(psutil.cpu_count(logical=False), proc.NumberOfCores)
+
+    def test_cpu_count_vs_cpu_times(self):
+        self.assertEqual(psutil.cpu_count(),
+                         len(psutil.cpu_times(percpu=True)))
+
+    def test_cpu_freq(self):
+        w = wmi.WMI()
+        proc = w.Win32_Processor()[0]
+        self.assertEqual(proc.CurrentClockSpeed, psutil.cpu_freq().current)
+        self.assertEqual(proc.MaxClockSpeed, psutil.cpu_freq().max)
+
+
+@unittest.skipIf(not WINDOWS, "WINDOWS only")
+class TestSystemAPIs(unittest.TestCase):
+
+    def test_nic_names(self):
+        out = sh('ipconfig /all')
+        nics = psutil.net_io_counters(pernic=True).keys()
+        for nic in nics:
+            if "pseudo-interface" in nic.replace(' ', '-').lower():
+                continue
+            if nic not in out:
+                self.fail(
+                    "%r nic wasn't found in 'ipconfig /all' output" % nic)
+
+    def test_total_phymem(self):
+        w = wmi.WMI().Win32_ComputerSystem()[0]
+        self.assertEqual(int(w.TotalPhysicalMemory),
+                         psutil.virtual_memory().total)
+
+    # @unittest.skipIf(wmi is None, "wmi module is not installed")
+    # def test__UPTIME(self):
+    #     # _UPTIME constant is not public but it is used internally
+    #     # as value to return for pid 0 creation time.
+    #     # WMI behaves the same.
+    #     w = wmi.WMI().Win32_Process(ProcessId=self.pid)[0]
+    #     p = psutil.Process(0)
+    #     wmic_create = str(w.CreationDate.split('.')[0])
+    #     psutil_create = time.strftime("%Y%m%d%H%M%S",
+    #                                   time.localtime(p.create_time()))
+
+    # Note: this test is not very reliable
+    @unittest.skipIf(APPVEYOR, "test not relieable on appveyor")
+    @retry_before_failing()
+    def test_pids(self):
+        # Note: this test might fail if the OS is starting/killing
+        # other processes in the meantime
+        w = wmi.WMI().Win32_Process()
+        wmi_pids = set([x.ProcessId for x in w])
+        psutil_pids = set(psutil.pids())
+        self.assertEqual(wmi_pids, psutil_pids)
+
+    @retry_before_failing()
+    def test_disks(self):
+        ps_parts = psutil.disk_partitions(all=True)
+        wmi_parts = wmi.WMI().Win32_LogicalDisk()
+        for ps_part in ps_parts:
+            for wmi_part in wmi_parts:
+                if ps_part.device.replace('\\', '') == wmi_part.DeviceID:
+                    if not ps_part.mountpoint:
+                        # this is usually a CD-ROM with no disk inserted
+                        break
+                    if 'cdrom' in ps_part.opts:
+                        break
+                    try:
+                        usage = psutil.disk_usage(ps_part.mountpoint)
+                    except OSError as err:
+                        if err.errno == errno.ENOENT:
+                            # usually this is the floppy
+                            break
+                        else:
+                            raise
+                    self.assertEqual(usage.total, int(wmi_part.Size))
+                    wmi_free = int(wmi_part.FreeSpace)
+                    self.assertEqual(usage.free, wmi_free)
+                    # 10 MB tollerance
+                    if abs(usage.free - wmi_free) > 10 * 1024 * 1024:
+                        self.fail("psutil=%s, wmi=%s" % (
+                            usage.free, wmi_free))
+                    break
+            else:
+                self.fail("can't find partition %s" % repr(ps_part))
+
+    def test_disk_usage(self):
+        for disk in psutil.disk_partitions():
+            if 'cdrom' in disk.opts:
+                continue
+            sys_value = win32api.GetDiskFreeSpaceEx(disk.mountpoint)
+            psutil_value = psutil.disk_usage(disk.mountpoint)
+            self.assertAlmostEqual(sys_value[0], psutil_value.free,
+                                   delta=1024 * 1024)
+            self.assertAlmostEqual(sys_value[1], psutil_value.total,
+                                   delta=1024 * 1024)
+            self.assertEqual(psutil_value.used,
+                             psutil_value.total - psutil_value.free)
+
+    def test_disk_partitions(self):
+        sys_value = [
+            x + '\\' for x in win32api.GetLogicalDriveStrings().split("\\\x00")
+            if x and not x.startswith('A:')]
+        psutil_value = [x.mountpoint for x in psutil.disk_partitions(all=True)]
+        self.assertEqual(sys_value, psutil_value)
+
+    def test_net_if_stats(self):
+        ps_names = set(cext.net_if_stats())
+        wmi_adapters = wmi.WMI().Win32_NetworkAdapter()
+        wmi_names = set()
+        for wmi_adapter in wmi_adapters:
+            wmi_names.add(wmi_adapter.Name)
+            wmi_names.add(wmi_adapter.NetConnectionID)
+        self.assertTrue(ps_names & wmi_names,
+                        "no common entries in %s, %s" % (ps_names, wmi_names))
+
+    def test_boot_time(self):
+        wmi_os = wmi.WMI().Win32_OperatingSystem()
+        wmi_btime_str = wmi_os[0].LastBootUpTime.split('.')[0]
+        wmi_btime_dt = datetime.datetime.strptime(
+            wmi_btime_str, "%Y%m%d%H%M%S")
+        psutil_dt = datetime.datetime.fromtimestamp(psutil.boot_time())
+        diff = abs((wmi_btime_dt - psutil_dt).total_seconds())
+        # Wmic time is 2-3 secs lower for some reason; that's OK.
+        self.assertLessEqual(diff, 3)
+
+    def test_boot_time_fluctuation(self):
+        # https://github.com/giampaolo/psutil/issues/1007
+        with mock.patch('psutil._pswindows.cext.boot_time', return_value=5):
+            self.assertEqual(psutil.boot_time(), 5)
+        with mock.patch('psutil._pswindows.cext.boot_time', return_value=4):
+            self.assertEqual(psutil.boot_time(), 5)
+        with mock.patch('psutil._pswindows.cext.boot_time', return_value=6):
+            self.assertEqual(psutil.boot_time(), 5)
+        with mock.patch('psutil._pswindows.cext.boot_time', return_value=333):
+            self.assertEqual(psutil.boot_time(), 333)
+
+
+# ===================================================================
+# sensors_battery()
+# ===================================================================
+
+
+@unittest.skipIf(not WINDOWS, "WINDOWS only")
+class TestSensorsBattery(unittest.TestCase):
+
+    def test_has_battery(self):
+        if win32api.GetPwrCapabilities()['SystemBatteriesPresent']:
+            self.assertIsNotNone(psutil.sensors_battery())
+        else:
+            self.assertIsNone(psutil.sensors_battery())
+
+    @unittest.skipIf(not HAS_BATTERY, "no battery")
+    def test_percent(self):
+        w = wmi.WMI()
+        battery_wmi = w.query('select * from Win32_Battery')[0]
+        battery_psutil = psutil.sensors_battery()
+        self.assertAlmostEqual(
+            battery_psutil.percent, battery_wmi.EstimatedChargeRemaining,
+            delta=1)
+
+    @unittest.skipIf(not HAS_BATTERY, "no battery")
+    def test_power_plugged(self):
+        w = wmi.WMI()
+        battery_wmi = w.query('select * from Win32_Battery')[0]
+        battery_psutil = psutil.sensors_battery()
+        # Status codes:
+        # https://msdn.microsoft.com/en-us/library/aa394074(v=vs.85).aspx
+        self.assertEqual(battery_psutil.power_plugged,
+                         battery_wmi.BatteryStatus == 2)
+
+    def test_emulate_no_battery(self):
+        with mock.patch("psutil._pswindows.cext.sensors_battery",
+                        return_value=(0, 128, 0, 0)) as m:
+            self.assertIsNone(psutil.sensors_battery())
+            assert m.called
+
+    def test_emulate_power_connected(self):
+        with mock.patch("psutil._pswindows.cext.sensors_battery",
+                        return_value=(1, 0, 0, 0)) as m:
+            self.assertEqual(psutil.sensors_battery().secsleft,
+                             psutil.POWER_TIME_UNLIMITED)
+            assert m.called
+
+    def test_emulate_power_charging(self):
+        with mock.patch("psutil._pswindows.cext.sensors_battery",
+                        return_value=(0, 8, 0, 0)) as m:
+            self.assertEqual(psutil.sensors_battery().secsleft,
+                             psutil.POWER_TIME_UNLIMITED)
+            assert m.called
+
+    def test_emulate_secs_left_unknown(self):
+        with mock.patch("psutil._pswindows.cext.sensors_battery",
+                        return_value=(0, 0, 0, -1)) as m:
+            self.assertEqual(psutil.sensors_battery().secsleft,
+                             psutil.POWER_TIME_UNKNOWN)
+            assert m.called
+
+
+# ===================================================================
+# Process APIs
+# ===================================================================
+
+
+@unittest.skipIf(not WINDOWS, "WINDOWS only")
+class TestProcess(unittest.TestCase):
+
+    @classmethod
+    def setUpClass(cls):
+        cls.pid = get_test_subprocess().pid
+
+    @classmethod
+    def tearDownClass(cls):
+        reap_children()
+
+    def test_issue_24(self):
+        p = psutil.Process(0)
+        self.assertRaises(psutil.AccessDenied, p.kill)
+
+    def test_special_pid(self):
+        p = psutil.Process(4)
+        self.assertEqual(p.name(), 'System')
+        # use __str__ to access all common Process properties to check
+        # that nothing strange happens
+        str(p)
+        p.username()
+        self.assertTrue(p.create_time() >= 0.0)
+        try:
+            rss, vms = p.memory_info()[:2]
+        except psutil.AccessDenied:
+            # expected on Windows Vista and Windows 7
+            if not platform.uname()[1] in ('vista', 'win-7', 'win7'):
+                raise
+        else:
+            self.assertTrue(rss > 0)
+
+    def test_send_signal(self):
+        p = psutil.Process(self.pid)
+        self.assertRaises(ValueError, p.send_signal, signal.SIGINT)
+
+    def test_exe_and_name(self):
+        for p in psutil.process_iter():
+            # On Windows name() is never supposed to raise AccessDenied,
+            # see https://github.com/giampaolo/psutil/issues/627
+            try:
+                name = p.name()
+            except psutil.NoSuchProcess:
+                pass
+            else:
+                try:
+                    self.assertEqual(os.path.basename(p.exe()), name)
+                except psutil.Error:
+                    continue
+
+    def test_num_handles_increment(self):
+        p = psutil.Process(os.getpid())
+        before = p.num_handles()
+        handle = win32api.OpenProcess(win32con.PROCESS_QUERY_INFORMATION,
+                                      win32con.FALSE, os.getpid())
+        after = p.num_handles()
+        self.assertEqual(after, before + 1)
+        win32api.CloseHandle(handle)
+        self.assertEqual(p.num_handles(), before)
+
+    def test_handles_leak(self):
+        # Call all Process methods and make sure no handles are left
+        # open. This is here mainly to make sure functions using
+        # OpenProcess() always call CloseHandle().
+        def call(p, attr):
+            attr = getattr(p, name, None)
+            if attr is not None and callable(attr):
+                attr()
+            else:
+                attr
+
+        p = psutil.Process(self.pid)
+        failures = []
+        for name in dir(psutil.Process):
+            if name.startswith('_') \
+                    or name in ('terminate', 'kill', 'suspend', 'resume',
+                                'nice', 'send_signal', 'wait', 'children',
+                                'as_dict', 'memory_info_ex'):
+                continue
+            else:
+                try:
+                    call(p, name)
+                    num1 = p.num_handles()
+                    call(p, name)
+                    num2 = p.num_handles()
+                except (psutil.NoSuchProcess, psutil.AccessDenied):
+                    pass
+                else:
+                    if num2 > num1:
+                        fail = \
+                            "failure while processing Process.%s method " \
+                            "(before=%s, after=%s)" % (name, num1, num2)
+                        failures.append(fail)
+        if failures:
+            self.fail('\n' + '\n'.join(failures))
+
+    @unittest.skipIf(not sys.version_info >= (2, 7),
+                     "CTRL_* signals not supported")
+    def test_ctrl_signals(self):
+        p = psutil.Process(get_test_subprocess().pid)
+        p.send_signal(signal.CTRL_C_EVENT)
+        p.send_signal(signal.CTRL_BREAK_EVENT)
+        p.kill()
+        p.wait()
+        self.assertRaises(psutil.NoSuchProcess,
+                          p.send_signal, signal.CTRL_C_EVENT)
+        self.assertRaises(psutil.NoSuchProcess,
+                          p.send_signal, signal.CTRL_BREAK_EVENT)
+
+    def test_username(self):
+        self.assertEqual(psutil.Process().username(),
+                         win32api.GetUserNameEx(win32con.NameSamCompatible))
+
+    def test_cmdline(self):
+        sys_value = re.sub(' +', ' ', win32api.GetCommandLine()).strip()
+        psutil_value = ' '.join(psutil.Process().cmdline())
+        self.assertEqual(sys_value, psutil_value)
+
+    # XXX - occasional failures
+
+    # def test_cpu_times(self):
+    #     handle = win32api.OpenProcess(win32con.PROCESS_QUERY_INFORMATION,
+    #                                   win32con.FALSE, os.getpid())
+    #     self.addCleanup(win32api.CloseHandle, handle)
+    #     sys_value = win32process.GetProcessTimes(handle)
+    #     psutil_value = psutil.Process().cpu_times()
+    #     self.assertAlmostEqual(
+    #         psutil_value.user, sys_value['UserTime'] / 10000000.0,
+    #         delta=0.2)
+    #     self.assertAlmostEqual(
+    #         psutil_value.user, sys_value['KernelTime'] / 10000000.0,
+    #         delta=0.2)
+
+    def test_nice(self):
+        handle = win32api.OpenProcess(win32con.PROCESS_QUERY_INFORMATION,
+                                      win32con.FALSE, os.getpid())
+        self.addCleanup(win32api.CloseHandle, handle)
+        sys_value = win32process.GetPriorityClass(handle)
+        psutil_value = psutil.Process().nice()
+        self.assertEqual(psutil_value, sys_value)
+
+    def test_memory_info(self):
+        handle = win32api.OpenProcess(win32con.PROCESS_QUERY_INFORMATION,
+                                      win32con.FALSE, self.pid)
+        self.addCleanup(win32api.CloseHandle, handle)
+        sys_value = win32process.GetProcessMemoryInfo(handle)
+        psutil_value = psutil.Process(self.pid).memory_info()
+        self.assertEqual(
+            sys_value['PeakWorkingSetSize'], psutil_value.peak_wset)
+        self.assertEqual(
+            sys_value['WorkingSetSize'], psutil_value.wset)
+        self.assertEqual(
+            sys_value['QuotaPeakPagedPoolUsage'], psutil_value.peak_paged_pool)
+        self.assertEqual(
+            sys_value['QuotaPagedPoolUsage'], psutil_value.paged_pool)
+        self.assertEqual(
+            sys_value['QuotaPeakNonPagedPoolUsage'],
+            psutil_value.peak_nonpaged_pool)
+        self.assertEqual(
+            sys_value['QuotaNonPagedPoolUsage'], psutil_value.nonpaged_pool)
+        self.assertEqual(
+            sys_value['PagefileUsage'], psutil_value.pagefile)
+        self.assertEqual(
+            sys_value['PeakPagefileUsage'], psutil_value.peak_pagefile)
+
+        self.assertEqual(psutil_value.rss, psutil_value.wset)
+        self.assertEqual(psutil_value.vms, psutil_value.pagefile)
+
+    def test_wait(self):
+        handle = win32api.OpenProcess(win32con.PROCESS_QUERY_INFORMATION,
+                                      win32con.FALSE, self.pid)
+        self.addCleanup(win32api.CloseHandle, handle)
+        p = psutil.Process(self.pid)
+        p.terminate()
+        psutil_value = p.wait()
+        sys_value = win32process.GetExitCodeProcess(handle)
+        self.assertEqual(psutil_value, sys_value)
+
+    def test_cpu_affinity(self):
+        def from_bitmask(x):
+            return [i for i in range(64) if (1 << i) & x]
+
+        handle = win32api.OpenProcess(win32con.PROCESS_QUERY_INFORMATION,
+                                      win32con.FALSE, self.pid)
+        self.addCleanup(win32api.CloseHandle, handle)
+        sys_value = from_bitmask(
+            win32process.GetProcessAffinityMask(handle)[0])
+        psutil_value = psutil.Process(self.pid).cpu_affinity()
+        self.assertEqual(psutil_value, sys_value)
+
+    def test_io_counters(self):
+        handle = win32api.OpenProcess(win32con.PROCESS_QUERY_INFORMATION,
+                                      win32con.FALSE, os.getpid())
+        self.addCleanup(win32api.CloseHandle, handle)
+        sys_value = win32process.GetProcessIoCounters(handle)
+        psutil_value = psutil.Process().io_counters()
+        self.assertEqual(
+            psutil_value.read_count, sys_value['ReadOperationCount'])
+        self.assertEqual(
+            psutil_value.write_count, sys_value['WriteOperationCount'])
+        self.assertEqual(
+            psutil_value.read_bytes, sys_value['ReadTransferCount'])
+        self.assertEqual(
+            psutil_value.write_bytes, sys_value['WriteTransferCount'])
+        self.assertEqual(
+            psutil_value.other_count, sys_value['OtherOperationCount'])
+        self.assertEqual(
+            psutil_value.other_bytes, sys_value['OtherTransferCount'])
+
+    def test_num_handles(self):
+        import ctypes
+        import ctypes.wintypes
+        PROCESS_QUERY_INFORMATION = 0x400
+        handle = ctypes.windll.kernel32.OpenProcess(
+            PROCESS_QUERY_INFORMATION, 0, self.pid)
+        self.addCleanup(ctypes.windll.kernel32.CloseHandle, handle)
+
+        hndcnt = ctypes.wintypes.DWORD()
+        ctypes.windll.kernel32.GetProcessHandleCount(
+            handle, ctypes.byref(hndcnt))
+        sys_value = hndcnt.value
+        psutil_value = psutil.Process(self.pid).num_handles()
+        self.assertEqual(psutil_value, sys_value)
+
+
+@unittest.skipIf(not WINDOWS, "WINDOWS only")
+class TestProcessWMI(unittest.TestCase):
+    """Compare Process API results with WMI."""
+
+    @classmethod
+    def setUpClass(cls):
+        cls.pid = get_test_subprocess().pid
+
+    @classmethod
+    def tearDownClass(cls):
+        reap_children()
+
+    def test_name(self):
+        w = wmi.WMI().Win32_Process(ProcessId=self.pid)[0]
+        p = psutil.Process(self.pid)
+        self.assertEqual(p.name(), w.Caption)
+
+    def test_exe(self):
+        w = wmi.WMI().Win32_Process(ProcessId=self.pid)[0]
+        p = psutil.Process(self.pid)
+        # Note: wmi reports the exe as a lower case string.
+        # Being Windows paths case-insensitive we ignore that.
+        self.assertEqual(p.exe().lower(), w.ExecutablePath.lower())
+
+    def test_cmdline(self):
+        w = wmi.WMI().Win32_Process(ProcessId=self.pid)[0]
+        p = psutil.Process(self.pid)
+        self.assertEqual(' '.join(p.cmdline()),
+                         w.CommandLine.replace('"', ''))
+
+    def test_username(self):
+        w = wmi.WMI().Win32_Process(ProcessId=self.pid)[0]
+        p = psutil.Process(self.pid)
+        domain, _, username = w.GetOwner()
+        username = "%s\\%s" % (domain, username)
+        self.assertEqual(p.username(), username)
+
+    def test_memory_rss(self):
+        time.sleep(0.1)
+        w = wmi.WMI().Win32_Process(ProcessId=self.pid)[0]
+        p = psutil.Process(self.pid)
+        rss = p.memory_info().rss
+        self.assertEqual(rss, int(w.WorkingSetSize))
+
+    def test_memory_vms(self):
+        time.sleep(0.1)
+        w = wmi.WMI().Win32_Process(ProcessId=self.pid)[0]
+        p = psutil.Process(self.pid)
+        vms = p.memory_info().vms
+        # http://msdn.microsoft.com/en-us/library/aa394372(VS.85).aspx
+        # ...claims that PageFileUsage is represented in Kilo
+        # bytes but funnily enough on certain platforms bytes are
+        # returned instead.
+        wmi_usage = int(w.PageFileUsage)
+        if (vms != wmi_usage) and (vms != wmi_usage * 1024):
+            self.fail("wmi=%s, psutil=%s" % (wmi_usage, vms))
+
+    def test_create_time(self):
+        w = wmi.WMI().Win32_Process(ProcessId=self.pid)[0]
+        p = psutil.Process(self.pid)
+        wmic_create = str(w.CreationDate.split('.')[0])
+        psutil_create = time.strftime("%Y%m%d%H%M%S",
+                                      time.localtime(p.create_time()))
+        self.assertEqual(wmic_create, psutil_create)
+
+
+@unittest.skipIf(not WINDOWS, "WINDOWS only")
+class TestDualProcessImplementation(unittest.TestCase):
+    """
+    Certain APIs on Windows have 2 internal implementations, one
+    based on documented Windows APIs, another one based
+    NtQuerySystemInformation() which gets called as fallback in
+    case the first fails because of limited permission error.
+    Here we test that the two methods return the exact same value,
+    see:
+    https://github.com/giampaolo/psutil/issues/304
+    """
+
+    @classmethod
+    def setUpClass(cls):
+        cls.pid = get_test_subprocess().pid
+
+    @classmethod
+    def tearDownClass(cls):
+        reap_children()
+    # ---
+    # same tests as above but mimicks the AccessDenied failure of
+    # the first (fast) method failing with AD.
+
+    def test_name(self):
+        name = psutil.Process(self.pid).name()
+        with mock.patch("psutil._psplatform.cext.proc_exe",
+                        side_effect=psutil.AccessDenied(os.getpid())) as fun:
+            self.assertEqual(psutil.Process(self.pid).name(), name)
+            assert fun.called
+
+    def test_memory_info(self):
+        mem_1 = psutil.Process(self.pid).memory_info()
+        with mock.patch("psutil._psplatform.cext.proc_memory_info",
+                        side_effect=OSError(errno.EPERM, "msg")) as fun:
+            mem_2 = psutil.Process(self.pid).memory_info()
+            self.assertEqual(len(mem_1), len(mem_2))
+            for i in range(len(mem_1)):
+                self.assertGreaterEqual(mem_1[i], 0)
+                self.assertGreaterEqual(mem_2[i], 0)
+                self.assertAlmostEqual(mem_1[i], mem_2[i], delta=512)
+            assert fun.called
+
+    def test_create_time(self):
+        ctime = psutil.Process(self.pid).create_time()
+        with mock.patch("psutil._psplatform.cext.proc_create_time",
+                        side_effect=OSError(errno.EPERM, "msg")) as fun:
+            self.assertEqual(psutil.Process(self.pid).create_time(), ctime)
+            assert fun.called
+
+    def test_cpu_times(self):
+        cpu_times_1 = psutil.Process(self.pid).cpu_times()
+        with mock.patch("psutil._psplatform.cext.proc_cpu_times",
+                        side_effect=OSError(errno.EPERM, "msg")) as fun:
+            cpu_times_2 = psutil.Process(self.pid).cpu_times()
+            assert fun.called
+            self.assertAlmostEqual(
+                cpu_times_1.user, cpu_times_2.user, delta=0.01)
+            self.assertAlmostEqual(
+                cpu_times_1.system, cpu_times_2.system, delta=0.01)
+
+    def test_io_counters(self):
+        io_counters_1 = psutil.Process(self.pid).io_counters()
+        with mock.patch("psutil._psplatform.cext.proc_io_counters",
+                        side_effect=OSError(errno.EPERM, "msg")) as fun:
+            io_counters_2 = psutil.Process(self.pid).io_counters()
+            for i in range(len(io_counters_1)):
+                self.assertAlmostEqual(
+                    io_counters_1[i], io_counters_2[i], delta=5)
+            assert fun.called
+
+    def test_num_handles(self):
+        num_handles = psutil.Process(self.pid).num_handles()
+        with mock.patch("psutil._psplatform.cext.proc_num_handles",
+                        side_effect=OSError(errno.EPERM, "msg")) as fun:
+            self.assertEqual(psutil.Process(self.pid).num_handles(),
+                             num_handles)
+            assert fun.called
+
+    def test_cmdline(self):
+        from psutil._pswindows import ACCESS_DENIED_ERRSET
+        for pid in psutil.pids():
+            try:
+                a = cext.proc_cmdline(pid, use_peb=True)
+                b = cext.proc_cmdline(pid, use_peb=False)
+            except OSError as err:
+                if err.errno in ACCESS_DENIED_ERRSET:
+                    pass
+                elif err.errno == errno.ESRCH:
+                    pass  # NSP
+                else:
+                    raise
+            else:
+                self.assertEqual(a, b)
+
+
+@unittest.skipIf(not WINDOWS, "WINDOWS only")
+class RemoteProcessTestCase(unittest.TestCase):
+    """Certain functions require calling ReadProcessMemory.
+    This trivially works when called on the current process.
+    Check that this works on other processes, especially when they
+    have a different bitness.
+    """
+
+    @staticmethod
+    def find_other_interpreter():
+        # find a python interpreter that is of the opposite bitness from us
+        code = "import sys; sys.stdout.write(str(sys.maxsize > 2**32))"
+
+        # XXX: a different and probably more stable approach might be to access
+        # the registry but accessing 64 bit paths from a 32 bit process
+        for filename in glob.glob(r"C:\Python*\python.exe"):
+            proc = subprocess.Popen(args=[filename, "-c", code],
+                                    stdout=subprocess.PIPE,
+                                    stderr=subprocess.STDOUT)
+            output, _ = proc.communicate()
+            if output == str(not IS_64_BIT):
+                return filename
+
+    @classmethod
+    def setUpClass(cls):
+        other_python = cls.find_other_interpreter()
+
+        if other_python is None:
+            raise unittest.SkipTest(
+                "could not find interpreter with opposite bitness")
+
+        if IS_64_BIT:
+            cls.python64 = sys.executable
+            cls.python32 = other_python
+        else:
+            cls.python64 = other_python
+            cls.python32 = sys.executable
+
+    test_args = ["-c", "import sys; sys.stdin.read()"]
+
+    def setUp(self):
+        env = os.environ.copy()
+        env["THINK_OF_A_NUMBER"] = str(os.getpid())
+        self.proc32 = get_test_subprocess([self.python32] + self.test_args,
+                                          env=env,
+                                          stdin=subprocess.PIPE)
+        self.proc64 = get_test_subprocess([self.python64] + self.test_args,
+                                          env=env,
+                                          stdin=subprocess.PIPE)
+
+    def tearDown(self):
+        self.proc32.communicate()
+        self.proc64.communicate()
+        reap_children()
+
+    @classmethod
+    def tearDownClass(cls):
+        reap_children()
+
+    def test_cmdline_32(self):
+        p = psutil.Process(self.proc32.pid)
+        self.assertEqual(len(p.cmdline()), 3)
+        self.assertEqual(p.cmdline()[1:], self.test_args)
+
+    def test_cmdline_64(self):
+        p = psutil.Process(self.proc64.pid)
+        self.assertEqual(len(p.cmdline()), 3)
+        self.assertEqual(p.cmdline()[1:], self.test_args)
+
+    def test_cwd_32(self):
+        p = psutil.Process(self.proc32.pid)
+        self.assertEqual(p.cwd(), os.getcwd())
+
+    def test_cwd_64(self):
+        p = psutil.Process(self.proc64.pid)
+        self.assertEqual(p.cwd(), os.getcwd())
+
+    def test_environ_32(self):
+        p = psutil.Process(self.proc32.pid)
+        e = p.environ()
+        self.assertIn("THINK_OF_A_NUMBER", e)
+        self.assertEquals(e["THINK_OF_A_NUMBER"], str(os.getpid()))
+
+    def test_environ_64(self):
+        p = psutil.Process(self.proc64.pid)
+        try:
+            p.environ()
+        except psutil.AccessDenied:
+            pass
+
+
+# ===================================================================
+# Windows services
+# ===================================================================
+
+
+@unittest.skipIf(not WINDOWS, "WINDOWS only")
+class TestServices(unittest.TestCase):
+
+    def test_win_service_iter(self):
+        valid_statuses = set([
+            "running",
+            "paused",
+            "start",
+            "pause",
+            "continue",
+            "stop",
+            "stopped",
+        ])
+        valid_start_types = set([
+            "automatic",
+            "manual",
+            "disabled",
+        ])
+        valid_statuses = set([
+            "running",
+            "paused",
+            "start_pending",
+            "pause_pending",
+            "continue_pending",
+            "stop_pending",
+            "stopped"
+        ])
+        for serv in psutil.win_service_iter():
+            data = serv.as_dict()
+            self.assertIsInstance(data['name'], str)
+            self.assertNotEqual(data['name'].strip(), "")
+            self.assertIsInstance(data['display_name'], str)
+            self.assertIsInstance(data['username'], str)
+            self.assertIn(data['status'], valid_statuses)
+            if data['pid'] is not None:
+                psutil.Process(data['pid'])
+            self.assertIsInstance(data['binpath'], str)
+            self.assertIsInstance(data['username'], str)
+            self.assertIsInstance(data['start_type'], str)
+            self.assertIn(data['start_type'], valid_start_types)
+            self.assertIn(data['status'], valid_statuses)
+            self.assertIsInstance(data['description'], str)
+            pid = serv.pid()
+            if pid is not None:
+                p = psutil.Process(pid)
+                self.assertTrue(p.is_running())
+            # win_service_get
+            s = psutil.win_service_get(serv.name())
+            # test __eq__
+            self.assertEqual(serv, s)
+
+    def test_win_service_get(self):
+        name = next(psutil.win_service_iter()).name()
+
+        with self.assertRaises(psutil.NoSuchProcess) as cm:
+            psutil.win_service_get(name + '???')
+        self.assertEqual(cm.exception.name, name + '???')
+
+        # test NoSuchProcess
+        service = psutil.win_service_get(name)
+        exc = WindowsError(
+            psutil._psplatform.cext.ERROR_SERVICE_DOES_NOT_EXIST, "")
+        with mock.patch("psutil._psplatform.cext.winservice_query_status",
+                        side_effect=exc):
+            self.assertRaises(psutil.NoSuchProcess, service.status)
+        with mock.patch("psutil._psplatform.cext.winservice_query_config",
+                        side_effect=exc):
+            self.assertRaises(psutil.NoSuchProcess, service.username)
+
+        # test AccessDenied
+        exc = WindowsError(
+            psutil._psplatform.cext.ERROR_ACCESS_DENIED, "")
+        with mock.patch("psutil._psplatform.cext.winservice_query_status",
+                        side_effect=exc):
+            self.assertRaises(psutil.AccessDenied, service.status)
+        with mock.patch("psutil._psplatform.cext.winservice_query_config",
+                        side_effect=exc):
+            self.assertRaises(psutil.AccessDenied, service.username)
+
+        # test __str__ and __repr__
+        self.assertIn(service.name(), str(service))
+        self.assertIn(service.display_name(), str(service))
+        self.assertIn(service.name(), repr(service))
+        self.assertIn(service.display_name(), repr(service))
+
+
+if __name__ == '__main__':
+    run_test_module_by_name(__file__)
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