from ordered_set import OrderedSet


# noinspection PyPep8Naming
def receives_OrderedSet_int(ordered_set: 'OrderedSet[int]') -> 'OrderedSet[int]':
    return ordered_set


receives_OrderedSet_int(OrderedSet(['ololo']))

$ mypy ordered_set_stubs_test.py
ordered_set_stubs_test.py:10: error: List item 0 has incompatible type "str"; expected "int"

from __future__ import annotations
from ordered_set import OrderedSet


# noinspection PyPep8Naming
def receives_OrderedSet_int(ordered_set: OrderedSet[int]) -> OrderedSet[int]:
    return ordered_set


receives_OrderedSet_int(OrderedSet(['ololo']))