摘要: 实训一: str1 = input("输入表达格式(...)x,")p1 = str1.find("(")p2 = str1.find(")")lens = len(str1)if not(p2>p1 and p2+1<=lens): print("输入错误!")else: es = str1[p1 阅读全文
posted @ 2023-10-25 18:05 Berlin123 阅读(39) 评论(0) 推荐(0)