docs: def get_args():
      """Parse command line arguments."""
      parser = argparse.ArgumentParser(
          prog=__title__,
          description=__description__,
      )
      parser.add_argument(
          '--testdb', action='store_true',
          help='create and use a database with test users'
      )
      parser.add_argument(
          '-v', '--verbose', action='store_true',
          help='print a detailed log'
      )
      parser.add_argument(
          '--debug', action='store_true',
          help='print debug log'
      )
      parser.add_argument(
          '--log-sql', action='store_true',
          help='log sql transactions'
      )
      parser.add_argument(
          '-V', '--version', action='store_true',
          help='print version info and exit'
      )
      parser.add_argument(
          '--tk', action='store_true',
          help='use old tk interface'
      )
      return parser.parse_args()