摘要: # _*_coding:utf-8_*_# Author:len liu'''让用户输入用户名密码认证成功后显示欢迎信息输错三次后退出程序'''user_list = { "len":'aaa', "alen":'bbb', "blen":'ccc'}count = 0while True: use 阅读全文
posted @ 2018-06-26 11:34 len1028 阅读(107) 评论(0) 推荐(0) 编辑
摘要: name = "my name is len" name.capitalize 首字母大写 print(name.capitalize()) > My name is len name.count 统计数量 print(name.count("e")) > 2 name.center 把字符放在中间 阅读全文
posted @ 2018-06-06 17:10 len1028 阅读(107) 评论(0) 推荐(0) 编辑