Some simple django fixture utils

fixture_utils.py

from django.core import serializers
from django.utils import simplejson

def add_to_fixture(qs, filename):
    f = open(filename, 'r')
    data_python_existing = simplejson.loads(f.read())
    f.close()
    data_json_unformatted = serializers.serialize('json', qs)
    data_python_new = simplejson.loads(data_json_unformatted)
    data_python_existing.extend(data_python_new)
    data_json_formatted = simplejson.dumps(data_python_existing, indent='    ')
    f = open(filename, 'w')
    f.write(data_json_formatted)
    f.close()

def make_fixture(qs, filename):
    data_json_unformatted = serializers.serialize('json', qs)
    data_python = simplejson.loads(data_json_unformatted)
    data_json_formatted = simplejson.dumps(data_python, indent='    ')
    f = open(filename, 'w')
    f.write(data_json_formatted)
    f.close()