docs: def _trim_zeros(*char_lists):
      """Trim any zeros from provided character lists
  
      Checks the beginning of any provided lists for '0's and removes any
      such leading zeros. Operates on (and possibly) alters the passed
      list
  
      :param list char_lists: a list or lists of characters
      :return: None
      :rtype: None
      """
      logger.debug('_trim_zeros(%s)', char_lists)
      for char_list in char_lists:
          while len(char_list) != 0 and char_list[0] == '0':
              char_list.pop(0)
          logger.debug('updated block: %s', char_list)