def setup_showfiles(parser, **kwargs):
    parser.add_argument('pack', nargs=1,
                        help="Pack or directory to read from")
    parser.add_argument('run', nargs=argparse.OPTIONAL,
                        help="Run whose input and output files will be listed")
    parser.add_argument('--input', action='store_true',
                        help="Only show input files")
    parser.add_argument('--output', action='store_true',
                        help="Only show output files")
    parser.set_defaults(func=showfiles)
Prints out input and output file names
dataset/ETHPy150Open ViDA-NYU/reprozip/reprounzip/reprounzip/pack_info.py/setup_showfiles