How to use the twarc.__version__ function in twarc

def test_version():
    import setup
    assert setup.__version__ == twarc.__version__

args = parser.parse_args()

    command = args.command
    query = args.query or ""

    logging.basicConfig(
        filename=args.log,
        level=logging.INFO,
        format="%(asctime)s %(levelname)s %(message)s"
    )

    # catch ctrl-c so users don't see a stack trace
    signal.signal(signal.SIGINT, lambda signal, frame: sys.exit(0))

    if command == "version":
        print("twarc v%s" % __version__)
        sys.exit()
    elif command == "help" or not command:
        parser.print_help()
        print("\nPlease use one of the following commands:\n")
        for cmd in commands:
            print(" - %s" % cmd)
        print("\nFor example:\n\n    twarc search blacklivesmatter")
        sys.exit(1)

    # Don't validate the keys if the command is "configure"
    if command == "configure" or args.skip_key_validation:
        validate_keys = False
    else:
        validate_keys = True