根据缺失的信息调整异常消息

Question

有这样的代码：

if __name__ == "__main__":
    parser.add_argument("--u_shape_dict", default="", action='store',
                    help="required for ...")

    parser.add_argument("--v_shape_dict", default="", action='store',
                    help="required for ...")

    u_shape_dict = args['u_shape_dict']
    if not u_shape_dict:
        raise Exception('u_shape_dict is missing. Please provide it')

    v_shape_dict = args['v_shape_dict']
    if not v_shape_dict:
        raise Exception('v_shape_dict is missing. Please provide it')

我想将这两个例外合并为一个：

if not u_shape_dict or v_shape_dict:
    raise Exception('%s is missing. Please provide it' % )

有可能这样做吗？ 在%签名后我需要放置什么？

Answer 1

您应该使用required选项，argparse将负责错误报告