code: def zipLists(*lists):
      
      length = len(lists[0])
      for i, list_ in enumerate(lists[1:]):
          if len(list_) != length:
              msg = "List at index {} has length {} != {}".format(
                  i + 1, len(list_), length)
              raise AssertionError(msg)
      return zip(*lists)
docs: Checks to see if all of the lists are the same length, and throws
      an AssertionError otherwise.  Returns the zipped lists.