from typing import Callable

class Foo:
    f: Callable[[int], None]

    def __init__(self, f: Callable[[int], None]):
        self.f = f
        # /tmp/foo.py:7: error: Cannot assign to a method
        # /tmp/foo.py:7: error: Invalid self argument "Foo" to attribute function "f" with type "Callable[[int], None]"
        # /tmp/foo.py:7: error: Incompatible types in assignment (expression has type "Callable[[int], None]", variable has type "Callable[[], None]")

    def call(self, n: int):
        self.f(n)
        # /tmp/foo.py:10: error: Invalid self argument "Foo" to attribute function "f" with type "Callable[[int], None]"
        # /tmp/foo.py:10: error: Too many arguments