Description

sobolevn

opened on Apr 12, 2025

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Feature or enhancement

Typeshed defines staticmethod and classmethod as generics:

1. https://github.com/python/typeshed/blob/f6216ec6230aa51fe7e23afca30a8f5b18ace476/stdlib/builtins.pyi#L137
2. https://github.com/python/typeshed/blob/f6216ec6230aa51fe7e23afca30a8f5b18ace476/stdlib/builtins.pyi#L154

It makes sense, because they are very callable-like. However:

>>> staticmethod[int]
Traceback (most recent call last):
  File "<python-input-0>", line 1, in <module>
    staticmethod[int]
    ~~~~~~~~~~~~^^^^^
TypeError: type 'staticmethod' is not subscriptable
>>> classmethod[int]
Traceback (most recent call last):
  File "<python-input-1>", line 1, in <module>
    classmethod[int]
    ~~~~~~~~~~~^^^^^
TypeError: type 'classmethod' is not subscriptable

We should consider making them generics in runtime as well.

@AlexWaygood @JelleZijlstra thoughts?
If you agree, I have a PR ready.

Linked PRs

• gh-132457: make staticmethod and classmethod generic #132460

Activity

1. sobolevn

   added

   interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

   topic-typing

   type-featureA feature request or enhancementA feature request or enhancement

   on Apr 12, 2025
2. sobolevn

   assigned

   sobolevn

   and unassigned

   sobolevn

   on Apr 12, 2025
3. IvanKirpichnikov commented on Apr 17, 2025

   

   IvanKirpichnikov

   on Apr 17, 2025

   Contributor

   More actions

   Another thing I noticed is that some generics in typeshed are not actually generics.
   For example, almost all objects in itertools.pyi and functools.pyi are generics, but only a few of them are actually generics.

   I can provide a list of such objects. I am also ready to undertake this correction if it is approved.
4. sobolevn

   added a commit that references this issue on May 4, 2025

   gh-132457: make staticmethod and classmethod generic (#132460)

   a363675
5. sobolevn

   closed this as completedon May 4, 2025
6. JelleZijlstra commented on May 4, 2025

   

   JelleZijlstra

   on May 4, 2025

   Member

   More actions

   For a number of itertools there's already an open issue in CPython, there was some hesitation about making them generic at runtime.

   Reacted by sobolevn and Alex Waygood
7. diegorusso

   added a commit that references this issue on May 4, 2025

   Merge remote-tracking branch 'origin/main' into call-len

   c03babc
8. Pranjal095

   added a commit that references this issue on Jul 12, 2025

   pythongh-132457: make staticmethod and classmethod generic (python#13…

   318bb66

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