python作业

1   #### 用户登陆 #####

#!/usr/bin/env python# coding:utf-8'''@author:liurong@file:password.py@contact:[e-mail]@time:7/11/173:27 PM@desc:'''print '''        欢迎来到用户管理系统！1) (L)ogin: 登陆2) (C)reate:注册3) (D)elete:删除用户4) (V)iew:  查看用户'''import datetimedef create():    newuser = raw_input("请输入注册用户名：")    newpassword = raw_input("请设置用户密码：")    dic[newuser]=newpassword    print "用户建立成功"def login():    user = raw_input("请输入用户名：")    password = raw_input("请输入密码：")    time0 = datetime.datetime(2017, 7, 11, 12, 0)    if user not in dic:        print "不存在此用户，请重新输入"    else:        if dic[user] != password:            print "密码错误，请重新登陆"        else:            time = datetime.datetime.now()            if (time-time0).seconds <14400:                print "你已经在4小时内登陆过"            else:                print '''                                                    登陆成功                                  '''                time0=timedef delete():    deleteuser=raw_input("请输入要删除的用户名：")    deletepassword=raw_input("请输入密码：")    if deleteuser not in dic:        print "不存在此用户，请重新输入"    else:        if dic[deleteuser] != deletepassword:            print "密码错误，请重新输入"        else:            dic.pop(deleteuser)            print "删除成功"def view():    user = raw_input("请输入用户名：")    password = raw_input("请输入密码：")    if user not in dic:        print "不存在此用户，请重新输入"    else:        if dic[user] != password:            print "密码错误，请重新输入"        else:            print dic.keys()dic = {"user1": "123", "user2": "456", "user3": "789"}while True:    choice = raw_input("请输入选项：")    if choice == "L"or choice == "l":        login()    elif choice == "C"or choice == "c":        create()    elif choice == "D"or choice == "d":        delete()    elif choice == "V"or choice == "v":        view()

2 #### 购物车 ####

#!/usr/bin/env python# coding:utf-8'''@author:liurong@file:gouwuche.py@contact:[e-mail]@time:7/11/173:44 PM@desc:'''goods=(    ["ipone10",18000],    ["cup",20],    ["bike",2000],    ["book",100])buy=[]print '''        程序操作B：购买商品Q：退出'''salary = input("请输入可用金额：")while(True):    choice=raw_input("请输入操作：")    if choice=="Q" or choice=="q":        exit()    elif choice=="B"or choice=="b":        print '''            商品列表        '''        for k,v in enumerate(goods):            print k,v        num = input("请选择商品，输入商品编号可加入购物车(0|1|2|3)：")        if salary < goods[num][1]:            print "金额不足"        else:            salary=salary-goods[num][1]            print "%s 购买成功" % goods[num][0]            buy.append(goods[num][0])            print '''                    消费单            购买商品：%s            消费金额：%d            当前余额：%d            ''' %(buy,goods[num][1],salary)