experimental/sources/: sniffio-1.3.1 metadata and description

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Sniff out which async library your code is running under

author_email "Nathaniel J. Smith" <njs@pobox.com>
  • License :: OSI Approved :: MIT License
  • License :: OSI Approved :: Apache Software License
  • Framework :: Trio
  • Framework :: AsyncIO
  • Operating System :: POSIX :: Linux
  • Operating System :: MacOS :: MacOS X
  • Operating System :: Microsoft :: Windows
  • Programming Language :: Python :: 3 :: Only
  • Programming Language :: Python :: Implementation :: CPython
  • Programming Language :: Python :: Implementation :: PyPy
  • Intended Audience :: Developers
  • Development Status :: 5 - Production/Stable
description_content_type text/x-rst
keywords async,trio,asyncio
license MIT OR Apache-2.0
  • Homepage, https://github.com/python-trio/sniffio
  • Documentation, https://sniffio.readthedocs.io/
  • Changelog, https://sniffio.readthedocs.io/en/latest/history.html
requires_python >=3.7
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sniffio: Sniff out which async library your code is running under

You’re writing a library. You’ve decided to be ambitious, and support multiple async I/O packages, like Trio, and asyncio, and … You’ve written a bunch of clever code to handle all the differences. But… how do you know which piece of clever code to run?

This is a tiny package whose only purpose is to let you detect which async library your code is running under.

This library is maintained by the Trio project, as a service to the async Python community as a whole.


from sniffio import current_async_library
import trio
import asyncio

async def print_library():
    library = current_async_library()
    print("This is:", library)

# Prints "This is trio"

# Prints "This is asyncio"

For more details, including how to add support to new async libraries, please peruse our fine manual.