Method difference

django/db/models/query.py:1734–1738

(self, *other_qs)

        return self._combinator_query("intersection", *other_qs)

    def difference(self, *other_qs):
        # If the query is an EmptyQuerySet, return it.
        if isinstance(self, EmptyQuerySet):
            return self
        return self._combinator_query("difference", *other_qs)

    def select_for_update(self, nowait=False, skip_locked=False, of=(), no_key=False):
        """