Python培训12期-day2作业-购物车

 #!/usr/bin/env python
 import sys
 import os
 import getpass

 商品={
     '图书': {
         "《Puppet实战》": 39,
         "《ZooKeeper分布式过程协同技术详解》":48,
         "《代码审计》":42,
         "《白帽子讲浏览器安全》":73,
     },
     '数码家电': {
         "Iphone6S":6000,
         "MacBookAir":15000,
         "DELL-R720":33000,
         "索尼PlayStation VR":2600,},
     '食品': {
         "茉莉花茶":3,
         "康师傅红烧牛肉面":3,
         "3+2饼干":5.5,
         "红牛":7,
     },
     '生活用品': {
       "汰渍洗衣液-550ml":23,
       "清风抽纸:300抽/三层":12,
       "电神水壶":98,
       "六神花露水":19,
     }
 }
 #定义各项初始值
 money='account.txt'
 logtime=0
 afile='afile.txt'
 bfile='bfile.txt'
 SHOPING=[]

 #显示余额
 def show_money():
     with open(money,'r+') as ac:
         for line in ac.readlines():
             yue = line.strip()
             return int(yue)

 def deny_account(username):
     print("This account already locked!")
     with open(bfile,'a+') as bf:  # 此处最好为a+模式，本人之前使用a模式错误账号无法写入
         bf.write(username + '\n')
 flag=False
 while logtime < 3:
     username = input('\033[31;1m请输入用户名:\033[0m')
     with open(bfile, 'r') as lock_f:
         # 取出黑名单中的用户名与输入的用户名进行匹配
         for line in lock_f.readlines():
             if len(line) == 0:
                 continue
             if username == line.strip():
                 sys.exit('\033[32;1m用户 %s 已经被锁定!\033[0m' % username)
     # 如果用户名为空重新输入
         if len(username) == 0:
             print('用户名不能为空，请重新输入')
             continue
     with open(afile,'r') as af:
         for line in af.readlines():
             user,pwd = line.strip().split()
             if username == user:
                 password = getpass._raw_input('请输入用户%s的密码:'%username).strip()
                 if username == user and password == pwd:
                     print('登陆成功！')
                     flag=True
                     break
                 else:
                     if logtime<3:
                         print('密码错误请重新输入!')
                     logtime+=1
                     break
         else:
             if logtime<3:
                 print('用户不存在!')
             logtime += 1
     if flag==True:
         print('Welcome %s come in TG!' % username)
         break
 else:
     deny_account(username)
 if flag==True:
     while True:
         if show_money() < 0:
             name1 = "\033[1;31;1m您的账户余额不足，请尽快充值！"
             print(name1.center(50, '-'))
         else:
             print('*'*50)
             欢迎信息 = '\033[1;31;1m欢迎登录没有小菊花的网上超市！\033[0m'
             print(欢迎信息.center(54, '*'))
             print('\033[1;32;1m*\033[1m' * 50)
             for lei in 商品:
                 print('\033[1;35;1m%s\033[1m'%lei)
                # print('\033[1;35;1m%s\033[1m'%lei)
                 print('\033[1;32;1m*\033[1m'*50)
                 选择类 = input('\033[1;34;1m请选择类目：\033[0m')
         #二级流程
                 for s in 商品[选择类]:
                     print('\033[1;32;1m-\033[1m' * 50)
                     print(s)
                     选择商品=input('请选择商品:')
                     n = input('输入数量:')
                     jiage=商品[选择类][选择商品]
                     print('\033[1;31;1m本商品单价为:%d¥，本次共计添加%d个,总价为%d*%d=%d¥\033[0m'%(jiage,int(n),jiage,int(n),jiage*int(n)))
                     SHOPING.extend([jiage*int(n)])
                     print('\033[1;32;1m-\033[1m' * 50)
                     xuanze=input('\033[1;31;1m是否继续购物，Y键返回主菜单，N进入购物车结算，请选择！\033[0m')
             #进入购物车结算
                     if xuanze =='N':
                         print('%s'%SHOPING)
                         结算=input('是否结算？Y/N')
                         if 结算 =='Y':
                             余额=show_money()-int(sum(SHOPING))
                             print(余额)
                             with open(money, 'w+') as ac:
                                 ac.writelines('%s'%余额)
                             #break
                         继续=input('是否继续购物(Y/N)?退出:N,返回上一级:Y.')
                         if 继续=='Y':
                             sys.exc_traceback()
                         else:
                             sys.exit()
                     elif xuanze=='Y':
                         break
                 else:
                     print("您选择的商品不存在！请重新选择！")
                     break
             else:
                 print("选择的类目不存在！")
                 continue
             break
         break

afile.txt内容

carl openstack

helen tianle

lucy hr

kevin usa

bfile.txt内容随意