def _error_opt_args(nargs, opt):
    if nargs == 1:
        raise BadOptionUsage(opt, opt % '%s option requires an argument')
    raise BadOptionUsage(opt, '%s option requires %d arguments' % (opt, nargs))
dataset/ETHPy150Open pallets/click/click/parser.py/_error_opt_args/swapped operands of `%`