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84 lines
2.5 KiB
84 lines
2.5 KiB
Metadata-Version: 2.1
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Name: nest-asyncio
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Version: 1.4.1
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Summary: Patch asyncio to allow nested event loops
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Home-page: https://github.com/erdewit/nest_asyncio
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Author: Ewald R. de Wit
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Author-email: ewald.de.wit@gmail.com
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License: BSD
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Keywords: asyncio,nested,eventloop
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Platform: UNKNOWN
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Classifier: Development Status :: 5 - Production/Stable
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Classifier: Intended Audience :: Developers
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Classifier: License :: OSI Approved :: BSD License
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Classifier: Programming Language :: Python :: 3.5
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Classifier: Programming Language :: Python :: 3.6
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Classifier: Programming Language :: Python :: 3.7
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Classifier: Programming Language :: Python :: 3.8
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Classifier: Programming Language :: Python :: 3 :: Only
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Requires-Python: >=3.5
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Description-Content-Type: text/x-rst
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|Build| |Status| |PyPiVersion| |License| |Downloads|
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Introduction
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------------
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By design asyncio `does not allow <https://bugs.python.org/issue22239>`_
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its event loop to be nested. This presents a practical problem:
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When in an environment where the event loop is
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already running it's impossible to run tasks and wait
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for the result. Trying to do so will give the error
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"``RuntimeError: This event loop is already running``".
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The issue pops up in various environments, such as web servers,
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GUI applications and in Jupyter notebooks.
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This module patches asyncio to allow nested use of ``asyncio.run`` and
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``loop.run_until_complete``.
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Installation
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------------
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.. code-block::
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pip3 install nest_asyncio
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Python 3.5 or higher is required.
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Usage
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-----
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.. code-block:: python
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import nest_asyncio
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nest_asyncio.apply()
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Optionally the specific loop that needs patching can be given
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as argument to ``apply``, otherwise the current event loop is used.
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An event loop can be patched whether it is already running
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or not. Only event loops from asyncio can be patched;
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Loops from other projects, such as uvloop or quamash,
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generally can't be patched.
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.. |Build| image:: https://travis-ci.org/erdewit/nest_asyncio.svg?branch=master
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:alt: Build
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:target: https://travis-ci.org/erdewit/nest_asyncio
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.. |PyPiVersion| image:: https://img.shields.io/pypi/v/nest_asyncio.svg
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:alt: PyPi
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:target: https://pypi.python.org/pypi/nest_asyncio
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.. |Status| image:: https://img.shields.io/badge/status-stable-green.svg
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:alt:
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.. |License| image:: https://img.shields.io/badge/license-BSD-blue.svg
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:alt:
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.. |Downloads| image:: https://pepy.tech/badge/nest-asyncio/month
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:alt: Number of downloads
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:target: https://pepy.tech/project/nest-asyncio
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