Python jsonpath-rw模块处理Json对象 Python使用jsonpath-rw模块处理Json对象操作示例

#如果用的requests发的请求
import json
response = requests.get(url,headers=self.headers)
response = response.content.decode()
response = json.loads(response) #转成json对象，在python里也就是dict类型

#如果用的scrapy.Request发的请求
import json
import scrapy
response = scrapy.Request(url,headers=self.headers)
response = response.text.decode()
response = json.loads(response) #转成json对象，在python里也就是dict类型

>>> from jsonpath_rw import jsonpath, parse
>>> json_obj = {"student":[{"male":176,"female":162},{"male":174,"female":159}]}
>>> jsonpath_expr = parse("student[*].male")
>>> male = jsonpath_expr.find(json_obj)
>>> male #返回的是list,但是不是我们想要的值
[DatumInContext(value=176, path=Fields('male'), context=DatumInContext(value={'male': 176, 'female': 162}, path=<jsonpath_rw.jsonpath.Index object at 0x000001C6B95109B0>, context=DatumInContext(value=[{'male': 176, 'female': 162}, {'male': 174, 'female': 159}], path=Fields('student'), context=DatumInContext(value={'student': [{'male': 176, 'female': 162}, {'male': 174, 'female': 159}]}, path=This(), context=None)))), DatumInContext(value=174, path=Fields('male'), context=DatumInContext(value={'male': 174, 'female': 159}, path=<jsonpath_rw.jsonpath.Index object at 0x000001C6B9510588>, context=DatumInContext(value=[{'male': 176, 'female': 162}, {'male': 174, 'female': 159}], path=Fields('student'), context=DatumInContext(value={'student': [{'male': 176, 'female': 162}, {'male': 174, 'female': 159}]}, path=This(), context=None))))]
#想要获取值，要用如下方法
>>> [match.value for match in male]
[176, 174]