Does not work

main.py

import argparse
import random
from os import path

if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='Entelect Challenge Python Bot Player', epilog='Good luck!')
    parser.add_argument('output_path', help='the output path where files will be saved')
    args = parser.parse_args()

    if not path.exists(args.output_path):
        raise Exception('Output folder {0} does not exist.'.format(args.output_path))

    output_file = path.join(args.output_path, 'move.txt')

    with open(output_file, 'w') as f:
        f.write('{0}\r\n'.format(random.choice([
            'Nothing',
            'MoveLeft',
            'MoveRight',
            'Shoot',
            'BuildAlienFactory',
            'BuildMissileController',
            'BuildShield'
        ])))