docs: def unparse_qsl(qsl, sort=False, reverse=False):
      """Reverse conversion for parse_qsl"""
      result = []
      items = qsl
      if sort:
          items = sorted(items, key=lambda x: x[0], reverse=reverse)
      for keys, values in items:
          query_name = quote(keys)
          result.append(query_name + "=" + quote(values))
      return "&".join(result)