练习: 三次机会登录系统
name = "ken" pwd = "123" count = 3 while 1 <= count: user_name = input("输入姓名:").strip() user_pwd = input("输入密码:").strip() if user_name == name and user_pwd == pwd: print("登录成功") break elif 1 < count: print("输入的姓名或密码有误,请重新输入") count = count - 1 else: print("三次机会用完") break