Python: コール可能なオブジェクト（関数とか）かチェックする

def f():
    pass


async def af():
    pass


class C:
    @staticmethod
    def s():
        pass

    @classmethod
    def c(cls):
        pass

    def i(self):
        pass


if __name__ == "__main__":
    print(callable("x")) # False
    print(callable(None)) # False
    print(callable(lambda x: x + 1)) # True
    print(callable(f)) # True
    print(callable(af)) # True
    print(callable(C.s)) # True
    print(callable(C.c)) # True
    print(callable(C.__init__)) # True
    print(callable(C().i)) # True
    print(callable(C.i)) # True