How to return null in all section in dictionary in python

Question

im using fastapi and python and need to check in dictionary if value is null.

i have a json like this:

{
 "id": null,
        "first_name": null,
        "last_name": null,
        "email": null,
        "user_id": null,
        "active": null
    },

using a query to DB. my dictionary sting is

user = {"id": n['id'], "first_name": n['first_name'], "last_name": n['last_name'],
                  "email": n['a_email'], "user_id": n['user_id'], "active": n['active']}

this values "active": null is empty in the table. How i can use if-else in python to check, if unique_id is null i need to write in my json only {null}

but if "unique_id": inc['a_unique_id'] have a value for example, 1, i need to get all info from this row:

{
 "id": 1 ,
        "first_name": "username",
        "last_name": "userlastname",
        "email": ""email@email.com,
        "user_id": userlogin,
        "active": 0
    },

final json i need to get should looks like this

--for row with info ---

{
     "id": 1 ,
            "first_name": "username",
            "last_name": "userlastname",
            "email": ""email@email.com,
            "user_id": userlogin,
            "active": 0
        },

for row with null values

{null}

i tried something like this

if n['id'] == "null":
            user = {"user": "NULL"}
        else:
            user= {"id": n['id'], "first_name": n['first_name'], "last_name": n['last_name'],
                  "email": n['email'], "user_id": n['user_id'], "active": n['active']}

but this dont work like i need

Answer 1

Python's None is equivalent to JSON's null .

So what you should do is the following:

    if n['id'] is None:
        user = None
    else:
        user= {"id": n['id'],
                "first_name": n['first_name'],
                "last_name": n['last_name'],
                "email": n['email'],
                "user_id": n['user_id'],
                "active": n['active']}