group.add_argument('-h', '--help', action='help', help=
    'show this help message and exit')
group.add_argument('-path', default='.', help=argparse.SUPPRESS)
group.add_argument('-m', '--modified', action='store_true', help=
    'show last modified date/time')
group.add_argument('-o', '--order', nargs=1, default='name', help=
    """sort order (n[ame], m[odified], s[ize])
[default: name]""")
group.add_argument('-r', '--recursive', action='store_true', help=
    'recurse into subdirectories')
group.add_argument('-s', '--sizes', action='store_true', help='show sizes')
args = parser.parse_args()
Move "help" to a different Argument Group in python argparse