继续坚持 学习python , 这个学习的重点的数组。 if,while 基础的训练。
1.新的知识点  enumerate  取出坐标

data = http://www.mamicode.com/[
    (‘iphone‘,5800),
    (‘coffer‘,31),
    (‘bike‘,800),
    (‘watch‘,100800),
    (‘book‘,10)
]
money = input("input you cash>>:")
shopping_list = []
if money.isdigit():
    money = int(money)
    while True:
        for index,i in enumerate(data):   #enumerate
            #print(data.index(i),i)  #下标显示
            print(index,i)
        choice = input("input you choice>>:")
        if choice.isdigit():
            choice = int(choice)
            if choice < len(data) and choice >=0:
                p_i = data[choice] #通过下标把商品取出
                if p_i[1] <= money: ##买得起
                    shopping_list.append(p_i)   #加入仓库
                    money -=p_i[1]
                    print("Added %s into shopping cart ,your current balance is \033[31;1m%s\033[0m " %(p_i,money))
                else:
                    print("\033[41;1m你的余额不足[%s]\033[0m"% money)
            else:
                print("prodect code [%s] is not exist" % choice)
        elif choice ==‘q‘:
            print("--shopping list---")
            for p in shopping_list:
                print(p)
            print("your current blance",money)
            print("BYE!")
            exit()
            #break
        else:
            print("out of choose")

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