python_jsonpath模块

模块安装：pip3 install jsonpath

import  jsonpath

ok_req={
    "version": "9.0.0",
    "is_test": True,
    "store": "",
    "urs": "",
    "device": {
        "os": "android",
        "imei": "99001062198893",
        "device_id": "CQliMWEyYTEzNTYyYzk5MzJmCTJlNmY3Zjkx",
    },
    "adunit": {
        "category": "VIDEO",
        "location": "1",
        "os": "ios",
        "blacklist": ""
    },
    "ext_param":{
        "is_start" : 0,
        "vId":"VW0BRMTEV"
    }
}

print(jsonpath.jsonpath(ok_req,'$.ext_param')) #找key为ext_param的值，返回类型list   ----精准查询
print(jsonpath.jsonpath(ok_req,'$.device.os')) #找device下的key为os的值，返回类型list ---精准查询
print(jsonpath.jsonpath(ok_req,'$..os')) #找字典中的key为os的所有值，返回类型list  ----模糊查询


打印结果：
[{'is_start': 0, 'vId': 'VW0BRMTEV'}]
['android']
['android', 'ios']