从 json 响应复制数据 [Python]

Question

I have a scenario where I am trying to extract data from json response which is obtained from the GET request and then rebuilding the json data by changing some values and then sending a PUT request at same time after rebuilding the json data(ie, after changing idter value) below is the target json response.

target_json = {
  "name": "toggapp",
  "ts": [
    1234,
    3456
  ],
  "gs": [
    {
      "id": 4491,
      "con": "mno"
    },
    {
      "id": 4494,
      "con": "hkl"
    }
  ],
  "idter": 500,
  "datapart": false
}

from the above json I am trying to change the idter value to my custom value and rebuild it into json data again and post the new json data. Here is what I have tried:

headers = {'Authorization': 'bearer ' + auth_token, 'Content-Type':'application/json', 'Accept':'application/json'}
tesstid =[7865, 7536, 7789]
requiredbdy = []
for key in testid:
    get_metadata_targetjson= requests.get('https://myapp.com/%s' %key, headers = headers)
    metadata=get_metadata_target.json()
    for key1 in metadata:
        requiredbdy.append(
                {
                        "metadata" : [{
                        "name": key1['name'],
                        "ts": key1['ts'],
                      "gs": key1[gs],
                      "idter": 100,  #custom value which I want to change
                     "datapart": false
                     } ]
                    }
                  )
        send_metadata_newjson= requests.put('https://myapp.com/%s' %key, headers = headers data = requiredbdy)
        print(send_metadata_newjson.status_code)

Is this approach fine or How do I proceed in order to achieve this scenario.

Answer 1

You can use the built-in json module for this like so

import json

my_json = """
{
  "name": "toggapp",
  "ts": [
    1234,
    3456
  ],
  "gs": [
    {
      "id": 4491,
      "con": "mno"
    },
    {
      "id": 4494,
      "con": "hkl"
    }
  ],
  "idter": 500,
  "datapart": false
}
"""

json_obj = json.loads(my_json)
json_obj['idter'] = 600
print(json.dumps(json_obj))

Prints

{"name": "toggapp", "ts": [1234, 3456], "gs": [{"id": 4491, "con": "mno"}, {"id": 4494, "con": "hkl"}], "idter": 600, "datapart": false}

Answer 2

There's this small script used it to find entries in some very long and unnerving JSONs. not very beautifull und badly documented but maybe helps in your scenario.

from RecursiveSearch import Retriever

def alter_data(json_data, key, original, newval):
    '''
    Alter *all* values of said keys
    '''
    retr = Retriever(json_data)
    for item_no, item in enumerate(retr.__track__(key)): # i.e. all 'value'
        # Pick parent objects with a last element False in the __track__() result,
        # indicating that `key` is either a dict key or a set element
        if not item[-1]: 
            parent = retr.get_parent(key, item_no)
            try:
                if parent[key] == original:
                    parent[key] = newval
            except TypeError:
                # It's a set, this is not the key you're looking for
                pass

if __name__ == '__main__':
    alter_data(notification, key='value', 
               original = '********** THIS SHOULD BE UPDATED **********',
               newval = '*UPDATED*')