aiosignal: a list of registered asynchronous callbacks
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.
$ pip install aiosignal
The library requires Python 3.6 or newer.
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
Python >= 3.6
frozenlist >= 1.0.0
aiosignal is offered under the Apache 2 license.
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.
Added support for Python 3.10. #328
Mark aiosignal as Python3-only package #165
Fix MANIFEST.in to include aiosignal/py.typed marker
Support type hints
Added support of Python 3.8 and 3.9
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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