Python程序2——购物车小程序练习

程序：购物车程序

需求:

1. 启动程序后，让用户输入工资，然后打印商品列表
2. 允许用户根据商品编号购买商品
3. 用户选择商品后，检测余额是否够，够就直接扣款，不够就提醒 
4. 可随时退出，退出时，打印已购买商品和余额

 1 stuff_list = ["1.water, price:500","2.beer, price:600","3.cola, price:700","4.phone, price:800","5.good water, price:900",   #不用加反斜杠，直接在，下面加就好
              "6.movie, price:1000"]
price_list = [500,600,700,800,900,1000]    # 建议不用这种，直接price和stuff的合起来就好，可以用元组

# product_list = [('water, price:',500),('2.beer, price:',600),('3.cola, price:',700),("4.phone, price:",800) ……这样的形式就好

salary = input("Please input your salary:")
if salary.isdigit():
    salary = int(salary)

choice_list = []


while  True:  #直接True 会好一点
    print(stuff_list)
    choice = int(input("Please input the goods number. If you want to quit,please input -1."))
    if choice == -1:
        print("The goods you have bought are %s, and your money is 33[31;1m%s33[0m left."%(choice_list,salary))
        break
    else:
        if price_list[choice-1] <= salary:                      #比较价格和剩余的金额
            print("Goods %s is in your shopping car"%choice)
            salary -= price_list[choice-1]
            choice_list.append(stuff_list[choice-1])
        else:
            print("Your money is not enough")


'''

product_list = [       #这种表述方式就比我的好，因为只用了一个空间，且不会因为顺序变化而导致商品编号出现问题，采用元组的形式也不会出现问题
    ('Iphone',5800),
    ('Mac Pro',9800),
    ('Bike',800),
    ('Watch',10600),
    ('Coffee',31),
    ('Alex Python',120),
]
shopping_list = []
salary = input("Input your salary:")
if salary.isdigit():          #判断是否为数字，然后就转化为int
    salary = int(salary)
    while True:
        for index,item in enumerate(product_list):    #高校地找出下标，enumerate这个不错,下标，项目内容
            #print(product_list.index(item),item)
            print(index,item)
        user_choice = input("选择要买嘛？>>>:")    
        if user_choice.isdigit():
            user_choice = int(user_choice)
            if user_choice < len(product_list) and user_choice >=0:         #还有判断是否用户输入有误，是否在商品里面
                p_item = product_list[user_choice]
                if p_item[1] <= salary: #买的起
                    shopping_list.append(p_item)
                    salary -= p_item[1]
                    print("Added %s into shopping cart,your current balance is 33[31;1m%s33[0m" %(p_item,salary) )  #33[31;1m%s33[0m 这个就是变色，变成31红色32绿色33黄色的功能
                else:
                    print("33[41;1m你的余额只剩[%s]啦，还买个毛线33[0m" % salary)    #41是背景的红色，42背景的绿色
            else:
                print("product code [%s] is not exist!"% user_choice)
        elif user_choice == 'q':
            print("--------shopping list------")
            for p in shopping_list:         #好像直接print shopping_list 好像也可以用
                print(p)
            print("Your current balance:",salary)
            exit()
        else:
            print("invalid option")'''