[New-bugs-announce] [issue46469] asyncio Generic classes should return GenericAlias in __class_getitem__

[Kumar Aditya]

New submission from Kumar Aditya <rahuladitya303 at gmail.com>:

In asyncio, the Generic classes return the class itself in __class_getitem__ instead of GenericAlias, because of this they cannot be introspected as GenericAlias objects.

Running Debug|x64 interpreter...
Python 3.11.0a4+ (main, Jan 22 2022, 10:00:18) [MSC v.1930 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import asyncio
>>> asyncio.Future
<class '_asyncio.Future'>
>>> asyncio.Future[int] 
<class '_asyncio.Future'>
>>> list
<class 'list'>
>>> list[int]
list[int]
>>> list[int].__args__
(<class 'int'>,)
>>> asyncio.Future[int].__args__
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: type object '_asyncio.Future' has no attribute '__args__'

----------
messages: 411231
nosy: asvetlov, kumaraditya303, yselivanov
priority: normal
severity: normal
status: open
title: asyncio Generic classes should return GenericAlias in __class_getitem__
type: behavior
versions: Python 3.11

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue46469>
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