@memoized_property
    def _parents(self):

        return weakref.WeakKeyDictionary()
itemChange(change: GraphicsItemChange, value: value) -> value
dataset/ETHPy150Open goFrendiAsgard/kokoropy/kokoropy/packages/sqlalchemy/ext/mutable.py/MutableBase._parents--crossover with--dataset/ETHPy150Open VisTrails/VisTrails/vistrails/gui/pipeline_view.py/QAbstractGraphicsPortItem.itemChange