str = "abcdefg123456"a = input("请输入一个字母或数字:")num = 0result = -1while num < len(str): if str[num] == a: result = num num += 1print(result)
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原文地址:https://www.cnblogs.com/pygo/p/11997429.html
时间: 2024-07-29 16:29:51
str = "abcdefg123456"a = input("请输入一个字母或数字:")num = 0result = -1while num < len(str): if str[num] == a: result = num num += 1print(result)
Q群:592857363
原文地址:https://www.cnblogs.com/pygo/p/11997429.html