`classmethod`s should not be able to be called on abstract classes

[DetachHead]

from abc import ABC, abstractmethod

class Foo(ABC):
    @classmethod
    def foo(cls) -> Foo:
        return cls()
    
    @abstractmethod
    def bar(self) -> None:
        ...

Foo.foo() # no error

playground

most of the time, classmethods are instantiating the class, so it should not allow you to call them on abstract classes.

i do however think staticmethods should still be allowed as they do not have access to the cls

[JelleZijlstra]

Classmethods can do other things than instantiating a class. I think this check would be too noisy to be useful.

[erictraut]

I agree that this would be too noisy. Recommend closing.