摘要: 实验任务3: def is_valid(x): a=['0','1','2','3','4','5','6','7','8','9','X'] if len(x)==18: x1=x[:17] if x1.isdigit(): for i in x: x2=[] x2.append(i) if x[ 阅读全文
posted @ 2022-05-24 17:04 天天三顿 阅读(22) 评论(3) 推荐(0) 编辑