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#!/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()