Function lenient_issubclass

fastapi/_compat/shared.py:47–55

(
    cls: Any, class_or_tuple: type[_T] | tuple[type[_T], ...] | None
)

# Copy of Pydantic: pydantic/_internal/_utils.py with added TypeGuard
def lenient_issubclass(
    cls: Any, class_or_tuple: type[_T] | tuple[type[_T], ...] | None
) -> TypeGuard[type[_T]]:
    try:
        return isinstance(cls, type) and issubclass(cls, class_or_tuple)  # type: ignore[arg-type]  # ty: ignore[invalid-argument-type]
    except TypeError:  # pragma: no cover
        if isinstance(cls, WithArgsTypes):
            return False
        raise  # pragma: no cover


def _annotation_is_sequence(annotation: type[Any] | None) -> bool: