Python 购物车程序
程序练习
购物车程序
需求:
- 启动程序后,让用户输入工资,然后打印商品列表
- 允许用户根据商品编号购买商品
- 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
- 可随时退出,退出时,打印已购买商品和余额
product_list = [ ('Iphone', 5000), ('Mac Pro', 9800), ('Bike', 800), ('Watch', 10600), ('Coffee', 31), ('Python', 120), ] shopping_list = [] salary = input("Input your salary: ") if salary.isdigit(): salary = int(salary) while True: # for item in product_list: # print(product_list.index(item),item) for index,item in enumerate(product_list): print(index,item) user_choice = input("选择要买嘛? >>>:") if user_choice.isdigit(): user_choice = int(user_choice) if 0 <= user_choice < len(product_list): p_item = product_list[user_choice] if p_item[1] <= salary: # 买得起 shopping_list.append(p_item) salary -= p_item[1] print("Added %s into shoping cart, your current is \033[31;0m %s \033[0m" % (p_item, salary)) else: print("\033[41;1m你的余额只剩[%s]啦,还买个毛线啊\033[0m" % salary) else: print("product code [%s] is not exist!" % user_choice) elif user_choice == "q": print("---------shopping list---------") for p in shopping_list: print(p) print("You current balance:",salary) exit() else: print("invalid option")