ENDMEMO

argparse module handles argument parsement out of global variable sys.argv. It can also generate help and error messages if the user gives invalid arguments.

argparse module located at "Lib/argparse.py".

Let's see a file named "test.py" with code:

import argparse
ps = argparse.ArgumentParser()
ps.add_argument('--elements',help='strings to be concatenated') 
args = ps.parse_args()

C:\> python test.py --help

usage: test.py [-h] [--elements ELEMENTS]

optional arguments:
  -h, --help           show this help message and exit
  --elements ELEMENTS  strings to be concatenated