product_list=[
    ('a1001',"IPHONE",5800),
    ('b2001',"MAC pro",12000),
    ('c3001',"Starbuck Latte",31),
    ('d4001',"Alex Python",81),
    ('e5001',"Bike",800)
]
shopping_list=[]    #建立臨時空列表
sal=input('please input your salary: ')
if sal.isdigit():
    sal=int(sal)
    rawsal = sal
    while True:
        serial=len
 
(product_list)
        for i in range(serial):
            p_item=product_list[i]
            print(p_item)
        user_chioce = input("please input your chioce: ")
        #while user_chioce in product_list[p_item.index(user_chioce)]:
for j in range(serial):
            p_item=product_list[j]
            if 
 
user_chioce == p_item[0]:
                if sal >=0 and sal >=p_item[2]:
                    shopping_list.append(p_item)
                    sal-=p_item[2]
                    print("Added %s into shopping cart,your current balance is \033[31;1m%s\033[0m" % (p_item, sal))
                else:
                    print
 
("\033[41;1m你的餘額只剩%s,餘額不足,請及時充值\033[0m" % (sal))
            elif user_chioce=='q':
                print("----your shopping list----")
                for index,p in enumerate(shopping_list):
                    print(index+1,p)
                print("Total:",rawsal-sal)
                print("Balance: ",sal)
                exit()
            else:
                continue
else:
    print("your salary input error,must be munber")