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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.htmlchapter of theaiohttp
documentation`_.
::
$ pip install aiosignal
https://aiosignal.readthedocs.io/
aiosignal is offered under the Apache 2 license.
The project is hosted on GitHub_
Please file an issue in the bug tracker <https://github.com/aio-libs/aiosignal/issues>_ if you have found a bug
or have some suggestions to improve the library.
.. _GitHub: https://github.com/aio-libs/aiosignal .. _aiohttp documentation: https://docs.aiohttp.org/
