I have this following code which is a simplified version of an entity component system in python: from __future__ import annotations from typing import TYPE_CHECKING, TypeVar, overload if TYPE_CHECKING: from collections.abc import Generator T = TypeVar("T") T1 = TypeVar("T1") T2 = TypeVar("T2") class Registry: def __init__(self) -> None: self._next_game_object_id = 0 self._components: dict[type[T], set[int]] = {} self._game_objects: dict[int, dict[type[T], T]] = {} @overload def get_components( self, component: type[T], ) -> Generator[tuple[int, T], None, None]: ... @overload def get_components( self, component: type[T], component_two: type[T1], ) -> Generator[tuple[int, T, T1], None, None]: ... @overload def get_components( self, component: type[T], component_two: type[T1], component_three: type[T2], ) -> Generator[tuple[int, T, T1, T2], None, None]: ... def get_components(self, *components: type[T]) -> Generator[tuple[int, tuple[T, ...]], None, None]: game_object_ids = set.intersection( *(self._components[component] for component in components), ) for game_object_id in game_object_ids: yield game_object_id, tuple( self._game_objects[game_object_id][component] for component in components ) However, I'm getting some mypy errors which I cannot figure out. One of which says that the TypeVar T is unbound and another says that get_components does not accept all possible arguments of signature 1, 2, and 3. How can I fix these errors? Continue reading...