Generator converting a result of ``parse_qs`` back to name-value pairs.

    .. versionadded:: 5.0

def qs_to_qsl(qs: Dict[str, List[AnyStr]]) -> Iterable[Tuple[str, AnyStr]]:
    """Generator converting a result of ``parse_qs`` back to name-value pairs.

    .. versionadded:: 5.0
    """
    for k, vs in qs.items():
        for v in vs:
            yield (k, v)