[python] main.py with command line argument

args.py

import argparse
import os


  
if __name__=="__main__":
    parser = argparse.ArgumentParser()
    parser.add_argument('--ex', default="ex",
                        help="ex")
    
        args = parser.parse_args()
    
    # argument 정보를 적음
    with open("arguments.txt","w") as f:
        f.write(str(vars(args)))