#!/usr/bin/env python3
"""A single positional argument"""

import argparse


# --------------------------------------------------
def get_args():
    """Get command-line arguments"""

    parser = argparse.ArgumentParser(
        description='A single positional argument',
        formatter_class=argparse.ArgumentDefaultsHelpFormatter)

    parser.add_argument('name', metavar='name', help='The name to greet')

    return parser.parse_args()


# --------------------------------------------------
def main():
    """Make a jazz noise here"""

    args = get_args()
    print('Hello, ' + args.name + '!')


# --------------------------------------------------
if __name__ == '__main__':
    main()