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aiosignal: a list of registered asynchronous callbacks

Project description

aiosignal

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Introduction

A project to manage callbacks in asyncio projects.

Signal is a list of registered asynchronous callbacks.

The signal’s life-cycle has two stages: after creation its content could be filled by using standard list operations: sig.append() etc.

After you call sig.freeze() the signal is frozen: adding, removing and dropping callbacks is forbidden.

The only available operation is calling the previously registered callbacks by using await sig.send(data).

For concrete usage examples see the Signals <https://docs.aiohttp.org/en/stable/web_advanced.html#aiohttp-web-signals> section of the `Web Server Advanced <https://docs.aiohttp.org/en/stable/web_advanced.html> chapter of the aiohttp documentation.

Installation

$ pip install aiosignal

The library requires Python 3.6 or newer.

Communication channels

aio-libs google group: https://groups.google.com/forum/#!forum/aio-libs

Feel free to post your questions and ideas here.

gitter chat https://gitter.im/aio-libs/Lobby

Requirements

  • Python >= 3.6
  • frozenlist >= 1.0.0

License

aiosignal is offered under the Apache 2 license.

Source code

The project is hosted on GitHub

Please file an issue in the bug tracker if you have found a bug or have some suggestions to improve the library.

Changelog

1.2.0 (2021-10-16)

Features

  • Added support for Python 3.10. #328

Bugfixes

  • Mark aiosignal as Python3-only package #165

1.1.2 (2020-11-27)

Features

  • Fix MANIFEST.in to include aiosignal/py.typed marker

1.1.1 (2020-11-27)

Features

  • Support type hints

1.1.0 (2020-10-13)

Features

  • Added support of Python 3.8 and 3.9

1.0.0 (2019-11-11)

Deprecations and Removals

  • Dropped support for Python 3.5; only 3.6, 3.7 and 3.8 are supported going forward. #23

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