code: def _process_parse_dates_argument(parse_dates):
      
      # handle non-list entries for parse_dates gracefully
      if parse_dates is True or parse_dates is None or parse_dates is False:
          parse_dates = []
  
      elif not hasattr(parse_dates, '__iter__'):
          parse_dates = [parse_dates]
      return parse_dates
docs: Process parse_dates argument for read_sql functions