Method _existing_object

django/forms/models.py:721–724

(self, pk)

        return super().initial_form_count()

    def _existing_object(self, pk):
        if not hasattr(self, "_object_dict"):
            self._object_dict = {o.pk: o for o in self.get_queryset()}
        return self._object_dict.get(pk)

    def _get_to_python(self, field):
        """