pyright seems to expect a name of the parameter in a Callable when using assert_type For such code: from typing import assert_type from collections.abc import Callable def tuple_of_nums(n: int) -> tuple[int,...]: return tuple(range(n)) assert_type(tuple_of_nums, Callable[[int], tuple[int,...]]) running pyright file.py yields: file.py:5:13 - error: "assert_type" mismatch: expected "(int) -> tuple[int, ...]" but received "(n: int) -> tuple[int, ...]" (reportAssertTypeFailure) The only difference being n: in the received function. How do I make this type assertion work? Continue reading...