Method _has_annotation

lib/sqlalchemy/orm/relationships.py:2597–2602

(self, clause: ClauseElement, annotation: str)

                return _deep_deannotate(self.primaryjoin)

    def _has_annotation(self, clause: ClauseElement, annotation: str) -> bool:
        for col in visitors.iterate(clause, {}):
            if annotation in col._annotations:
                return True
        else:
            return False

    @util.memoized_property
    def _has_foreign_annotations(self) -> bool: