[New-bugs-announce] [issue36042] Setting __init_subclass__ and __class_getitem__ methods are in runtime doesnt make them class method.

[BTaskaya]

New submission from BTaskaya <batuhanosmantaskaya at gmail.com>:

CPython only makes these methods class method when a class created. If you set __class_getitem__ method after the creation it doesn't work unless you use classmethod decorator manually.

>>> class B:
...     pass
... 
>>> def y(*a, **k):
...     return a, k
... 
>>> B.__class_getitem__ = y 
>>> B[int]
((<class 'int'>,), {})
>>> B.__class_getitem__ = classmethod(y)
>>> B[int]
((<class '__main__.B'>, <class 'int'>), {})

----------
messages: 335985
nosy: BTaskaya
priority: normal
severity: normal
status: open
title: Setting __init_subclass__ and __class_getitem__ methods are in runtime doesnt make them class method.
type: behavior

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue36042>
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