python_jsonpath方法

jsonpath提供了在多维字典中找到某个key的便捷方法，一定要知道哦~

用法如下：

import jsonpath
#这是一个复杂的json串
d={
    "code": 200,
    "message": "成功!",
    "result": [{
        "sid": "29668676",
        "text": "假如员工比老板有钱",
        "type": "video",
        "thumbnail": "http://wimg.spriteapp.cn/picture/2019/0719/5d3140efefed1_wpd.jpg",
        "video": "http://uvideo.spriteapp.cn/video/2019/0719/5d3140efefed1_wpd.mp4",
        "up": "106",
        "down": "8",
        "forward": "2",
        "comment": "6",
        "uid": "20272202",
        "name": "淼兔兔i",
        "header": "http://wimg.spriteapp.cn/profile/large/2018/04/19/5ad85b1dc8973_mini.jpg",
        "passtime": "2019-07-21 02:55:02"
    }, {
        "sid": "29640878",
        "text": "各大老陈醋厂家即将面临史上最大威胁",
        "type": "video",
        "thumbnail": "http://wimg.spriteapp.cn/picture/2019/0708/5d23510ce5a84_wpd.jpg",
        "video": "http://uvideo.spriteapp.cn/video/2019/0708/5d23510ce5a84_wpd.mp4",
        "up": "294",
        "down": "6",
        "forward": "0",
        "comment": "21",
        "uid": "23133772",
        "name": "雪碧与可乐",
        "header": "http://wimg.spriteapp.cn/profile/large/2019/07/04/5d1da0563a951_mini.jpg",
        "passtime": "2019-07-21 02:15:01"
    }]
}

#如果我们需要找到video的值，传统方法是
print（d[result][0][video]）
#使用jsonpath
result=jsonpath.jsonpath(d,'$..video')
#$代表最外层，无论这个key的位置在哪里都能找到。如果对应的是多个Key,那么返回的是一个list

d2 = {
    "stu":{
        "sex":'男',
        "house":{
            "bejing":{"四环":5,"三环":4},
            "上海":{"浦东":4}
        }
    }
}
print(d2['stu']['house']['上海']['浦东'])
result2=jsonpath.jsonpath(d2,'$..浦东')    #无论这个key的位置在哪里都能找到
result3=jsonpath.jsonpath(d2,'$.stu.house')#$代表最外层，可以一直点下去
#如果找不到对应的key,返回结果是False