简单的实现购物车功能，还有不到位的地方，加油！！！

要求：

 

注意：1、商品列表内的嵌套最好使用元组

　　　2、显示产品的序号，可是使用enumerate，或者使用index

　　　　

import time
goods = [{"huawei":1000},{"apple":10},{"banana":23},{"pen":140},{"wanju":78},
         {"book":200},{"taideng":780},{"rou":432},{"zhuozi":653},{"yizi":1244}]



buy_goods = []
all_salary = 0
info = True
#while True:
print("".center(6,"="),"欢迎您的到来","".center(6,"="))

while info:
    salary = input("请输入你的工资：")
    print("".center(26, "="))
    if salary.isdigit():
        salary = int(salary)
        while info:
            num = 1
            if num <= len(goods):
                for good in goods:
                    for bal,value in good.items():
                        print(num, bal," ",value)
                    num += 1
                print("退出请按q或Q----购买请按Y或y")
                print("".center(26, "="))

                bar_num = input("请输入要买的物品的序号：")
                if bar_num == 'q' or bar_num == 'Q':
                    info = False
                elif bar_num.isdigit():
                    bar_num = int(bar_num)
                    if bar_num <= len(goods) and bar_num > 0:
                        for buy_bars,buy_salary in goods[bar_num - 1].items():
                            if salary >= buy_salary:
                                salary -= buy_salary
                                all_salary += buy_salary
                                buy_goods.append(buy_bars)
                                #break
                            else:
                                print("您的余额不足")
                                time.sleep(2)

                        #break

                elif bar_num == 'y' or bar_num == 'Y':
                    print("您购买的货物有：",buy_goods,"共花费：",all_salary,"元")
                    info = False

                else:
                    print("输入错误！！!")


                        #print(buy_goods)
    else:
        print("输入错误,请重新输入！！！")
        time.sleep(1)