code: def parse_sws_date(date_string):
      
      if date_string is None:
          return None
      date_formats = ["%m/%d/%Y", "%Y-%m-%d", "%Y%m%d"]
      datetime_obj = None
      for fmt in date_formats:
          try:
              datetime_obj = datetime.strptime(date_string, fmt)
          except ValueError:
              continue
          break
      if datetime_obj is None:
          raise ValueError("Unknown SWS date format")
      return datetime_obj
docs: Takes a date from the SWS response object
      and attempts to parse it using one of the several
      datetime formats used by the SWS
      :param date_string:
      :return: date object