How to use the reprozip.__version__ function in reprozip

parser_pack.set_defaults(func=pack)

    # combine command
    parser_combine = subparsers.add_parser(
        'combine',
        help="Combine multiple traces into one (possibly as subsequent runs)")
    add_options(parser_combine)
    parser_combine.add_argument('traces', nargs=argparse.ONE_OR_MORE)
    parser_combine.set_defaults(func=combine)

    args = parser.parse_args()
    setup_logging('REPROZIP', args.verbosity)
    if getattr(args, 'func', None) is None:
        parser.print_help(sys.stderr)
        sys.exit(2)
    setup_usage_report('reprozip', reprozip_version)
    if 'cmdline' in args and not args.cmdline:
        parser.error("missing command-line")
    record_usage(command=args.selected_command)
    try:
        status = args.func(args)
    except Exception as e:
        traceback.print_exc()
        submit_usage_report(result=type(e).__name__)
        sys.exit(125)
    else:
        submit_usage_report(result='success')
    if status is None:
        sys.exit(0)
    else:
        sys.exit(int(status))

'system': [platform.system(), platform.release()],
                     'environ': environ,
                     'uid': os.getuid(),
                     'gid': os.getgid(),
                     'signal' if r_exitcode & 0x0100 else 'exitcode':
                         r_exitcode & 0xFF})

    cur.close()
    conn.close()

    if find_inputs_outputs:
        inputs_outputs = compile_inputs_outputs(runs, inputs, outputs)
    else:
        inputs_outputs = {}

    save_config(config, runs, packages, files, reprozip_version,
                inputs_outputs)

    print("Configuration file written in {0!s}".format(config))
    print("Edit that file then run the packer -- "
          "use 'reprozip pack -h' for help")

'system': [platform.system(), platform.release()],
                     'environ': environ,
                     'uid': os.getuid(),
                     'gid': os.getgid(),
                     'signal' if r_exitcode & 0x0100 else 'exitcode':
                         r_exitcode & 0xFF})

    cur.close()
    conn.close()

    if find_inputs_outputs:
        inputs_outputs = compile_inputs_outputs(runs, inputs, outputs)
    else:
        inputs_outputs = {}

    save_config(config, runs, packages, files, reprozip_version,
                inputs_outputs)

    print("Configuration file written in {0!s}".format(config))
    print("Edit that file then run the packer -- "
          "use 'reprozip pack -h' for help")

# Checks that input files are packed
    for name, f in iteritems(inputs_outputs):
        if f.read_runs and not Path(f.path).exists():
            logger.warning("File is designated as input (name %s) but is not "
                           "to be packed: %s", name, f.path)

    # Generates a unique identifier for the pack (for usage reports purposes)
    pack_id = str(uuid.uuid4())

    # Stores canonical config
    fd, can_configfile = Path.tempfile(suffix='.yml', prefix='rpz_config_')
    os.close(fd)
    try:
        save_config(can_configfile, runs, packages, other_files,
                    reprozip_version,
                    inputs_outputs, canonical=True,
                    pack_id=pack_id)

        tar.add(str(can_configfile), 'METADATA/config.yml')
    finally:
        can_configfile.remove()

    tar.close()

    # Record some info to the usage report
    record_usage_package(runs, packages, other_files,
                         inputs_outputs,
                         pack_id)

def add_options(opt):
        opt.add_argument('--version', action='version',
                         version="reprozip version %s" % reprozip_version)
        opt.add_argument('-d', '--dir', default='.reprozip-trace',
                         help="where to store database and configuration file "
                         "(default: ./.reprozip-trace)")
        opt.add_argument(
            '--dont-identify-packages', action='store_false', default=True,
            dest='identify_packages',
            help="do not try identify which package each file comes from")
        opt.add_argument(
            '--dont-find-inputs-outputs', action='store_false',
            default=True, dest='find_inputs_outputs',
            help="do not try to identify input and output files")