pip install click

import click
 
@click.command()
@click.option('--count', default=1, help='Number of greetings.')
@click.option('--name', prompt='Your name',
    help='The person to greet.')
def hello(count, name):
 """Simple program that greets NAME for a total of COUNT times."""
 for x in range(count):
  click.echo('Hello %s!' % name)
 
if __name__ == '__main__':
 hello()

$ python hello.py --count=3
Your name: John
Hello John!
Hello John!
Hello John!

$ python hello.py --help
Usage: hello.py [OPTIONS]
 
 Simple program that greets NAME for a total of COUNT times.
 
Options:
 --count INTEGER Number of greetings.
 --name TEXT  The person to greet.
 --help   Show this message and exit.