Shared via mypy Playground

main.py

class A:
    import math

    def __new__(cls) -> "A":
        reveal_type(cls.math.pi)  # N: Revealed type is "Any"
        return cls()

    def pos_or_named_self(self) -> None:
        reveal_type(self.math.pi)  # N: Revealed type is "builtins.float"

    def pos_only_self(self, /) -> None:
        reveal_type(self.math.pi)  # N: Revealed type is "Any"

    @classmethod
    def clsmethod(cls) -> None:
        reveal_type(cls.math.pi)  # N: Revealed type is "builtins.float"