如何将变量添加到JSON Python Django

 class GetRouteDriver(APIView):
    authentication_classes = (TokenAuthentication,)    
    permission_classes = (IsAuthenticated,)
    def get(self, request, username, origin, destination):  
        origin_lat, origin_lng = origin.split(',')
        destination_lat, destination_lng = destination.split(',')
        url = 'https://maps.googleapis.com/maps/api/directions/json?origin=' + origin + '&destination=' + destination + '&key'+ GOOGLE_KEY 
        request_data = urllib2.urlopen(url)
        serialized_data = request_data.read()
        id = '1'
        ride = json.loads(serialized_data)

        return Response( ride, status=status.HTTP_200_OK )
 class GetRouteDriver(APIView):
    authenticat