Install click
pip install clickWhy? Personally I like declaring command and parameters using decorators/annotations.
NOTE: Alternatives include argparse (native python support), Docopt, Clint, etc.
A sample click cli application which support 2 commands, with required and optional parameters.
import click@click.group()def cli(): pass@cli.command()@click.option('--name', required=True)# @click.option('--name', prompt='Your name', help='The person to greet.')# @click.argument('name')@click.option('--count', type=int, default=1, help='Number of greetings.')def hello(name, count): click.echo('Hello {}, No {}'.format(name, count))@cli.command()def test(): click.echo('test')# cli.add_command(hello)# cli.add_command(test)if __name__ == '__main__': cli()Sample usage
python app.py testpython app.py hello --name Desmondpython app.py hello --name Desmond --count 9