day1-1

product_list =[
                ("电脑",5800),
                ("phone",4200),
                ("pen",66),
                ("book",99),
                ("watch",10800),
                ]

salary = input("输入工资:")
shopping_list =[]
buy_money =0
ifsalary.isdigit():
    salary =int(salary)
    whileTrue:
        for index,value inenumerate(product_list):
            print(index,value)
        
        choice = input("输入产品编号：")
        ifchoice.isdigit():
            choice =int(choice)
            
            if choice >= 0 and choice <len(product_list):
                item =product_list[choice]
                if salary >= item[1]:
                    salary -= item[1]
                    buy_money += item[1]
                    shopping_list.append(item)
                    for i inshopping_list:
                        print(i)
                    print("你当前的余额是%d" %salary)
                else:
                    print("你当前的余额是%d,可用余额不足" %salary)
            else:
                print("没有此商品")
        elif choice == 'q':
            print("shopping list".center(50,'-'))
            for i inshopping_list:
                print(i)
            print("你购物消费%d元，当前的余额是%d" %(buy_money,salary))
            break
        else:
            print("输入'q'或者编号")
else:
    print("输入错误")