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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def type_and_model_to_query(self, request):
 """ Return JSON for an individual Model instance If the required parameters are wrong, return 400 Bad Request If the parameters are correct but there is no data, return empty JSON """

        try:
            content_type_id = request.GET["content_type_id"]
            object_id = request.GET["object_id"]
        except KeyError:
            return HttpResponseBadRequest()

        try:
            content_type = ContentType.objects.get(pk=content_type_id)
            model = content_type.model_class()
            result = model.objects.get(pk=object_id)
        except ObjectDoesNotExist:
            data = ""
        else:
            data = '%s: "%d: %s"' % (content_type.model, result.pk, result)

        return JsonResponse({"query": data})