code: def qs_to_qsl(qs: Dict[str, List[AnyStr]]) -> Iterable[Tuple[str, AnyStr]]:
      
      for k, vs in qs.items():
          for v in vs:
              yield (k, v)
docs: Generator converting a result of ``parse_qs`` back to name-value pairs.
  
      .. versionadded:: 5.0