Method relevant_items

mypy/types.py:3381–3386

Removes NoneTypes from Unions when strict Optional checking is off.

(self)

        return visitor.visit_union_type(self)

    def relevant_items(self) -> list[Type]:
        """Removes NoneTypes from Unions when strict Optional checking is off."""
        if state.strict_optional:
            return self.items
        else:
            return [i for i in self.items if not isinstance(get_proper_type(i), NoneType)]

    def serialize(self) -> JsonDict:
        return {