parser = argparse.ArgumentParser(description='Process some integers.')
parser.add_argument('logs_dir', metavar='logs-dir', nargs=1, help=
    'Directory with .log and .log.gz files')
parser.add_argument('results_csv', metavar='results-csv', nargs=1, type=
    argparse.FileType('w'), default=sys.stdout, help='Output .csv filename')
args = parser.parse_args()
print(args)
Having options in argparse with a dash