Django add information to database

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database

Django

Hi everyone, I am currently learning Djnago and situation is the following. I have a legacy database, I connected it to Django. In this database I have names of schools. I have written a code in python that uses those names and returns lat and lng from Google API.
Here is the code:

def read(file_name):
    school_list = []
    with open(file_name) as f:
        data=json.load(f)
        gmaps = googlemaps.Client(key='my google key')
        for o in data:
            try:
                geocode_result = gmaps.geocode(o['Skolenhetsnamn'])
                location=geocode_result[0]["geometry"]["location"]
            except IndexError:
                pass
            lat=location.get ("lat","0.0")
            lng=location.get("lng","0.0")
            school = School(o['Skolenhets-kod'], o['Skolenhetsnamn'], o['Kod'], o['Kommun'],lat,lng)
            school_list.append(school)
    return school_list

It perfectly works with json file outside Django . However, I wanted to do the same in Django in python shell. Calling "python manage.py shell" and update my model. In other words add to the database lat and lng using the same python code,but in Django database API.That does not seem to work. Should I modify somehow the code for Django? Or it is better to update database out of Django and attach the database with the full info? Will be grateful for any hints.

What I have tried:

To check Django documentation about creating objects in databases