python实战小程序之购物车



# Author:南邮吴亦凡

# 商品列表

product_list = [

    ('Iphone',5800),  # 逗号一定不可以省略！

    ('Mac',4800),

    ('smartphone',400),

    ('watch',9100),

    ('coffee',500),

    ('python',9200),

]

shopping_list = []

# 工资

salary = input("Input your salary:")  # 输入的是字符串

if salary.isdigit():   # 如果这是一个数字，就转成数字

    salary = int(salary)

    while True:

        # for item in product_list:

            print(item)                           # 无序号

        # for item in product_list:

            print(product_list.index(item),item)  # 有序号（1）

        for index,item in enumerate(product_list):

            print(index,item)                     # 有序号（2）

# 选择买的商品

        user_choice = input("选择要买吗？>>>:")

        if user_choice.isdigit():

            user_choice = int(user_choice)

            if user_choice <len(product_list) and user_choice >=0:

                p_item = product_list[user_choice]

                if p_item[1] <=salary:  # 买得起

                    shopping_list.append(p_item)

                    salary -= p_item[1]  # 把商品的钱从工资里扣除

                    print("Added %s into shopping cart,your current balance is \033[31;1m%s\033[0m" %(p_item,salary))

                    # print("Added %s into shopping cart,your current balance is %s" %(p_item,salary))  # 余额没有颜色

                else:    # 买不起

                    print("\033[41;1m你的余额只剩[%s]啦\033[0m" % salary)  # 31无背景的红色，41有背景的红色

            print("商品[%s]不存在")

        elif user_choice =='q':

            print("-----shopping list------")

            for p in shopping_list:

                print(p)

            print("your current balance:",salary)

            exit()

        else:

            print("invalid option")
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python实战小程序之购物车

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