code: def sort(iterable):
      
      ips = sorted(normalize_ip(ip) for ip in iterable)
      return [clean_ip(ip) for ip in ips]
docs: Given an IP address list, this function sorts the list.
  
      :type  iterable: Iterator
      :param iterable: An IP address list.
      :rtype:  list
      :return: The sorted IP address list.