code: def main():  # pragma: nocover
      
      p = argparse.ArgumentParser()
      p.add_argument(
          'directory',
          help="Directory to check"
      )
      p.add_argument(
          '--verbose', '-v', action='store_true',
          help="increase verbosity"
      )
      args = p.parse_args()
  
      import sys
      _changed = changed(sys.argv[1], args=args)
      sys.exit(_changed)
docs: Return exit code of zero iff directory is not changed.