如何对QTreeWidget列进行排序？

from PyQt5.QtWidgets import QApplication, QTreeWidget, QTreeWidgetItem
from PyQt5.QtCore import Qt

app = QApplication([])

# 创建 QTreeWidget 实例
tree = QTreeWidget()
tree.setHeaderLabels(['Name', 'Age'])

# 添加数据
item1 = QTreeWidgetItem(["Alice", "30"])
item2 = QTreeWidgetItem(["Bob", "25"])
item3 = QTreeWidgetItem(["Charlie", "35"])

tree.addTopLevelItem(item1)
tree.addTopLevelItem(item2)
tree.addTopLevelItem(item3)

# 启用排序功能
tree.setSortingEnabled(True)

# 手动按第二列（年龄）降序排序
tree.sortByColumn(1, Qt.DescendingOrder)

tree.show()
app.exec_()

class MyTreeWidgetItem(QTreeWidgetItem):
    def __lt__(self, other):
        column = self.treeWidget().sortColumn()
        if column == 1:  # 假设第二列是年龄，需要特殊处理
            return int(self.text(column)) > int(other.text(column))
        return super().__lt__(other)