菜鸟生活（python）之购物车列表

product_list = [        (‘Iphone‘,5800),        (‘Mac Pro‘,9980),        (‘Bike‘,800),        (‘watch‘,10600),        (‘Coffee‘,31),        (‘AlexPython‘,80),]shop_list = []salary = input("Please input your salary:")if salary.isdigit():    salary = int(salary)    while True:        for index,item in enumerate(product_list):                        #print(product_list.index(item),item)enumerate            print(index,item)                         #break        user_choice = input ("选择要买什么")        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:                    shop_list.append(p_item)                    salary -= p_item[1]                    print("Added %s into shopping cart,your current balance is \033[31;1m%s\033[0m"%(p_item,salary))                else:                 print("\033[42;1m你余额只剩[%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 shop_list:                print(p)            print("Your current balance:",salary)            exit()        else:            print("invalid option")