parser = argparse.ArgumentParser(description='Prepare something code.')
parser.add_argument('-t', '--tabular', help=
    'print something in tabular way for EXCEL', action='store_true')
parser.add_argument('-v', '--verbose', action='store_true')
args = parser.parse_args()
if args.tabular:
    print('Tabular print')
elif args.verbose:
    print('VERBOSE')
else:
    print(parser.print_help())
How to make argparse print usage when no option is given to the code