Remove fields from a json array in Python

July 8, 2022

Currently I have a function returning json via jsonify.

[
  {
    "hostname": "bla",
    "ipaddress": "192.168.1.10",
    "subnetmask": "255.255.255.0",
    "iloip": "192.168.1.11"
   }
]

I want to keep it in json format, but I want to only show the fields I choose (i.e. reduce it). For this example, I want hostname and ipaddress.

Thanks

>Solution :

If I understand you correctly:

import json


response = [
    {
        "hostname": "bla",
        "ipaddress": "192.168.1.10",
        "subnetmask": "255.255.255.0",
        "iloip": "192.168.1.11",
    }
]
desired_keys = ["hostname", "ipaddress"]
new_response = json.dumps(
    [{key: x[key] for key in desired_keys} for x in response]
)

And now you have a new_response – valid JSON, with which you can continue to work on