Minimal Python command line argument processing

sample_args.py

#!python
""" A fairly simple way of parsing arguments without using libraries.
Licenced: http://creativecommons.org/publicdomain/zero/1.0/
"""
import sys


def main(_=None, argument_1="", argument_2="", *args):
    if not argument_1: 
        print("need arg 1!)"
    # etc.


if __name__ == "__main__":
    main(*sys.argv)