如何从qtreeview中的父行中获取特定列

# 导入必要的模块
from PyQt5.QtWidgets import QApplication, QMainWindow, QTreeView
from PyQt5.QtCore import QAbstractItemModel, QModelIndex

# 自定义的数据模型类
class MyModel(QAbstractItemModel):
    def __init__(self, data, parent=None):
        super().__init__(parent)
        self._data = data

    def index(self, row, column, parent=QModelIndex()):
        if not self.hasIndex(row, column, parent):
            return QModelIndex()
        if not parent.isValid():
            parentItem = self._data
        else:
            parentItem = parent.internalPointer()
        childItem = parentItem[row]
        if childItem:
            return self.createIndex(row, column, childItem)
        else:
            return QModelIndex()

    def parent(self, index):
        if not index.isValid():
            return QModelIndex()
        childItem = index.internalPointer()
        parentItem = childItem.parent()
        if parentItem == self._data:
            return QModelIndex()
        return self.createIndex(parentItem.row(), 0, parentItem)

    def rowCount(self, parent=QModelIndex()):
        if parent.column() > 0:
            return 0
        if not parent.isValid():
            parentItem = self._data
        else:
            parentItem = parent.internalPointer()
        return len(parentItem)

    def columnCount(self, parent=QModelIndex()):
        return 2

    def data(self, index, role=Qt.DisplayRole):
        if not index.isValid():
            return None
        if role == Qt.DisplayRole:
            item = index.internalPointer()
            if index.column() == 0:
                return item.name()
            elif index.column() == 1:
                return item.value()
        return None

# 创建应用程序和主窗口
app = QApplication([])
window = QMainWindow()

# 创建QTreeView并设置数据模型
treeView = QTreeView(window)
data = [
    {'name': 'Parent 1', 'value': 'Value 1'},
    {'name': 'Parent 2', 'value': 'Value 2'},
    {'name': 'Parent 3', 'value': 'Value 3'}
]
model = MyModel(data)
treeView.setModel(model)

# 获取选中行的父索引
selectedIndexes = treeView.selectedIndexes()
if selectedIndexes:
    selectedIndex = selectedIndexes[0]
    parentIndex = selectedIndex.parent()

    # 获取特定列的数据
    column = 1  # 假设要获取第二列的数据
    data = model.data(parentIndex.sibling(parentIndex.row(), column))
    print(data)

# 显示窗口
window.show()
app.exec_()