[issue38008] ContextManager and AsyncContextManager protocols can't be subclassed
Change by Divij Rajkumar : -- nosy: divijrajkumar priority: normal severity: normal status: open title: ContextManager and AsyncContextManager protocols can't be subclassed type: behavior versions: Python 2.7, Python 3.5, Python 3.6, Python 3.7, Python 3.8, Python 3.9 ___ Python tracker <https://bugs.python.org/issue38008> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue38008] ContextManager and AsyncContextManager protocols can't be subclassed
New submission from Divij Rajkumar : Reported this initially on github - https://github.com/python/typing/pull/650 The problem is in the typing code that checks if any of the parent classes for a Protocol are builtin protocols. The code today maintains a whitelist of builtin protocols that are okay to be subclassed, but expects them all to live within the 'collections.abc' module. This means 'typing.ContextManager' and 'typing.AsyncContextManager' cannot be subclassed, even though those protocols are listing in the whitelist. -- ___ Python tracker <https://bugs.python.org/issue38008> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue38008] ContextManager and AsyncContextManager protocols can't be subclassed
Divij Rajkumar added the comment: I'd like to take a stab at putting up a patch for this but I've never contributed anything to Python before, so I'll have a read through the contribution docs and put up a PR. -- ___ Python tracker <https://bugs.python.org/issue38008> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue38008] ContextManager and AsyncContextManager protocols can't be subclassed
Change by Divij Rajkumar : -- keywords: +patch pull_requests: +15313 stage: -> patch review pull_request: https://github.com/python/cpython/pull/15647 ___ Python tracker <https://bugs.python.org/issue38008> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
