# author:Iron Qi
product_list = [('Iphone',5800),
                ('Mac Pro',9800),
                ('Play Game',1000),
                ('Watch',4300),
                ('Basketball',260),
                ('cloth',1314)
               ]
shopping_list=[]  #商品購物車是空表
salary = input("Input your salary:")
if salary.isdigit():
    salary = int(salary)
    while True:
        for index,item in enumerate(product_list): # 取列表的下標和實際屬性
            print(index,item)
        user_choice = input("Please select the item you want to buy:") # 選擇的是商品編號
        if user_choice.isdigit():
            user_choice = int(user_choice)
            if user_choice < len(product_list)and user_choice >=0:
                p_price=product_list[user_choice]
                if p_price[1] <= salary: #can buy
                    shopping_list.append(p_price)
                    salary -=p_price[1]
                    print("Added %s into shopping cart,your balance is \033[31;1m%s\033[0m" %(p_price,salary))
                else:
                    print("\033[32;1myour balance only is[%s]，No longer available\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("your current balance:",salary)
            exit()
        else:
            print("invalid option")
else:
    print("\033[33;1mYour input is not valid\033[0m") #\033[33;1m----\033[0m 是用來高亮。
 

那個關鍵字的高亮是固定格式，31,32,33,41,42,43分別代表字型是綠，紅，黃和關鍵字背景顏色是綠，紅，黃。希望博友來踩！