import argparse
parser = argparse.ArgumentParser(description="'Ello, Miss", prog='The Pet Shoppe')
parser.add_argument('--ex', required=True, action='store_true', help="If you suspect 'e's no more.")
parser.add_argument('plumage', help='Describe his lovely plumage')
parser.print_help()

""" Expected Output:

usage: The Pet Shoppe [-h] --ex plumage

'Ello, Miss

positional arguments:
  plumage     Describe his lovely plumage

switches:
  -h, --help  show this help message and exit
  --ex        If you suspect 'e's no more.
"""