def main(argv):

  # Initialize parser #
  parser = argparse.ArgumentParser()

  # Add options #

  parser.add_argument('files', nargs=argparse.REMAINDER)

  argv = parser.parse_args()

  if 2 < len(argv.files):
    print('Usage: find root expression')
    return

  _find(s=argv.files[-1], root=argv.files[0])
dataset/ETHPy150Open vhpanisa/pythonix/bin/phase3/find.py/main/swapped operands of `<`