treeview.py 文件源码

def parent(self, index):
        if not index.isValid():
            return QtCore.QModelIndex()

        child_item = index.internalPointer()
        parent_item = child_item.parent()

        if parent_item == self.rootItem:
            return QtCore.QModelIndex()

        return self.createIndex(parent_item.row(), 0, parent_item)