小练习2

脚本内容：

 

#!/usr/bin/env python#coding:utf-8__author__ = "sunner"'''@author:sunner@time:@desc:'''import stringuser = ['sunner','cat','root','student' ]passwd = ['hello','hello','hello','hello' ]list1 = []NOTE = '''                            #######用户管理#######    （C）reate : 创建用户    （L）ogin ： 登陆用户        ####################'''print NOTEwhile True: C = raw_input("请输入你的选择（C/L）：") C1 = C.upper() if C1 == "C" :a = raw_input("请输入你要建立的用户：")if a not in user[]:user.append(a)print userb=raw_input("请输入用户密码：")   passwd.append(b)    print passwdelif:print (" 错误：你所建立的用户已存在 ！") elif:num = 0while num < 3:        if username == user and passwd == password:                print "Welcome to user manage system "                break        else:                print 'username or password worry !'num += 1