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 3.8 or newer.
https://aiosignal.readthedocs.io/
gitter chat https://gitter.im/aio-libs/Lobby
- Python >= 3.8
- 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.