购物车

#!/usr/bin/env python
# coding:utf-8
shopping_list =[
    ['Mi 5s',1999],
    ['HaWei Mate8',2799],
    ['IPhone 6s plus',6888],
    ['ThinkPad T460P',7888],
    ['MacBook Air 13',6988],
    ['MacBook Pro 13',9288],
]
salary = 100000
total = 0
shop_list = []

while True:
    welcome_1 = "欢迎使用xx在线购物商城"
    we_1 = welcome_1.center(30,'*')
    print(we_1)
    choice_1 = "1.注册 2.登陆 q.退出"
    ch_1 = choice_1.center(32,'*')
    exit_1 = "谢谢使用，欢迎下次光临！"
    ex_1 = exit_1.center(30,'*')
    error_1 = "你输入的用户已存在，请重新输入"
    er_1 = error_1.center(30,'-')
    error_2 = "密码不能为空，请重新输入"
    er_2 = error_2.center(30,'-')
    error_3 = "输入的密码太短，请重新输入"
    er_3 = error_3.center(30,'-')
    error_4 = "输入有误，请重新输入"
    er_4 = error_4.center(28,'-')
    error_5 = "账号已锁定，请联系管理员"
    er_5 = error_5.center(25,'-')
    print(ch_1)
    st_1 = input("选择功能：")
    if st_1 == '1':
        while True:
            with open('names.txt','r') as read_1:
                temp = read_1.readlines()
                usl = []
            for ust in temp:
                ust = ust.strip().split(':')
                usl.append(ust[0])
            useradd = input("账户名称：")
            success_1 = "创建用户成功：%s" %(useradd)
            if useradd in usl:
                print(er_1)
            elif useradd == "exit":
                break
            else:
                passwd = input("请输入密码：")
                length = len(passwd)
                if length == 0:
                    print(er_2)
                elif length > 6:
                    with open('names.txt','a') as pas_3:
                        we_1 = '%s:%s:0
' %(useradd,passwd)
                        pas_3.write(we_1)
                        ok_1 =success_1.center(30,'-')
                        print(ok_1)
                        break
                else:
                    print(er_3)

    elif st_1 == '2':
        flag =False
        while True:
            username = input("账户名称：")
            lo = open('lock.txt','r')
            for loline in lo.readlines():
                loline = loline.strip()
                if username == loline:
                    print("账号已锁定！")
                    flag = True
                    lo.close()
                    break
            if flag == True:
                break

            ul = open('names.txt','r')
            for ulline in ul.readlines():
                user,password,mony = ulline.strip().split(':')

                if username == user:
                    i = 0
                    while i < 3 :
                        passwd = input('密码：')
                        i +=1
                        if passwd == password:
                            print('欢迎%s登陆在线购物平台' % username)
                            flag = True
                            ul.close()
                            break
                        else:
                            if i >= 3:
                                with open('lock.txt','a') as lock_2:
                                    lock_2.write(username + '
')
                                    ul.close()
                                exit("尝试次数太多，账户将被锁定。")
                            print('密码输入错误，还有%d次机会' % (3 - i))
                    break
            else:
                print("密码错误，请重新输入")


            while True:
                print("1.购物 2.查看购物车 3.查询余额 4.充值 b.返回登陆 q.退出")
                print('----------------------------------------------------')
                choice_2 = input("输入序号：")
                flag_1 = False
                while True:
                    if choice_2 == "1":
                        while True:
                            for index,g in enumerate(shopping_list):
                                print(index,g[0],g[1])
                            print('--------------------')
                            print("c.查看购物车 b.返回 q.退出")
                            print('-----------------------------')
                            choice = input("请输入数字选择商品：").strip()
                            if choice.isdigit():
                                choice = int(choice)
                                p_price = shopping_list[choice][1]
                                if p_price < salary:
                                    shop_list.append(shopping_list[choice])
                                    total += p_price
                                    salary -= p_price
                                    print('-----------------------------')
                                    print("您购买了%s,余额为%s" %(shopping_list[choice][0],salary))
                                    print('--------------------')
                                else:
                                    print('-----------------------------')
                                    print("您的余额不足")
                                    print('-----------------------------')
                            elif choice == "c":
                                while True:
                                    print("----------购物车----------")
                                    for k,v in enumerate(shop_list):
                                        print(k,v[0],v[1])
                                    print("已消费金额为：%s" %total)
                                    print("您的可用余额为：%s" %salary)
                                    print('-----------------------------')
                                    print("d.删除商品 b.返回购物 q.结算退出")
                                    print('-----------------------------')
                                    choice_1 = input("请输入字母选择功能：")
                                    print('-----------------------------')
                                    if choice_1 == "d":
                                        print('-----------------------------')
                                        print("输入数字为删除商品，输入字母b为返回购物车")
                                        print('-----------------------------')
                                        while True:
                                            choice_2 = input("请选择：")
                                            if choice_2.isdigit():
                                                choice_2 = int(choice_2)
                                                d_price = shop_list[choice_2][1]
                                                shop_list.remove(shop_list[choice_2])
                                                total -= d_price
                                                salary += d_price
                                                print('-----------------------------')
                                                print("商品%s删除成功，可用余额为：%s" %(shop_list[choice_2][0],salary))
                                                print('-----------------------------')
                                            elif choice_2 == "b":
                                                break
                                    elif choice_1 == "b":
                                        flag = True
                                        break
                                    else:
                                        print("-----------购物清单-------------")
                                        for k,v in enumerate(shop_list):
                                            print(k,v[0],v[1])
                                        print('总消费金额为：%s' %total)
                                        print("您的可用余额：%s" %salary)
                                        print('---------欢迎下次光临---------')
                                        exit(0)
                            elif choice == "b":
                                break
                            elif choice == "q":
                                print("-----------购物清单-------------")
                                for k,v in enumerate(shop_list):
                                    print(k,v[0].v[1])
                                print('总消费金额为：%s' % total)
                                print("您的可用余额：%s" % salary)
                                print('---------欢迎下次光临---------')
                                exit(0)
                            else:
                                print("--------------------------------")
                                print("您输入的密码有误，请重新输入")
                                print("--------------------------------")
                            if flag == True:
                                break
                    elif choice_2 == "2":
                        print("----------购物车----------")
                        for k,v in enumerate(shop_list):
                            print(k,v[0],v[1])
                        print('总消费金额为：%s' % total)
                        print("您的可用余额：%s" % salary)

                        print("--------------------------------")
                        break
                    elif choice_2 == "3":
                        with open('names.txt','r') as m_1:
                            mony_1 = m_1.readlines()
                        for mline in mony_1:
                            (user,password,mony) = mline.strip().split(':')
                            print(salary)
                            flag_1 = True
                            break
                        break

                    elif choice_2 == "4":
                        z = 0
                        while z < 1:
                            chongzhi = int(input("输入金额："))
                            passwd_1 = input("请输入密码：")
                            m = open('names.txt','r+')
                            m_2 = m.readlines()

                            for mline in m_2:
                                (user,password,mony) = mline.strip().split(':')

                                if passwd_1 == password:
                                    mony_2 = (chongzhi + int(mony))

                                    w_2 = '%s:%s%s
' %(username,password,mony_2)
                                    m.write(w_2)
                                    print("充值成功")
                                    print(mony)
                                    flag = True
                                    break
                                continue
                            break
                        if flag == True:
                            break

                        elif choice_2 == "b":
                            flag =True
                            break

                        elif choice_2 == "q":
                            exit(ex_1)
                        else:
                            print(er_4)
                            break
                        break
                    if flag == True:
                        break
            break
    elif st_1 == 'q':
        exit(ex_1)
    else:
        print(er_4)
        print ('              ')