获取列表的索引操作：enumerate

通过循环获取列表的索引操作：

 主要使用：enumerate

---

product_list = [['Iphone7',5800],
                ['Coffee',30],
                ['疙瘩汤',10],
                ['Python Book',99],
                ['Bike',199],
                ['ViVo X9',2499],

                ]

for index,product in enumerate (product_list):
    print(index,product)

运行结果 

/anaconda3/envs/python36-oldboy/bin/python /Users/zhouyuqiang/Documents/面向对象/day22/test.py
0 ['Iphone7', 5800]
1 ['Coffee', 30]
2 ['疙瘩汤', 10]
3 ['Python Book', 99]
4 ['Bike', 199]
5 ['ViVo X9', 2499]

Process finished with exit code 0