如何以编程方式突出显示QTreeView中的选定内容？

from PyQt5.QtWidgets import QApplication, QTreeView, QAbstractItemView, QStandardItemModel
from PyQt5.QtGui import QStandardItem
from PyQt5.QtCore import Qt

app = QApplication([])
tree_view = QTreeView()
model = QStandardItemModel()

root_item = model.invisibleRootItem()

# 添加根节点
root_node = QStandardItem("Root")
root_item.appendRow(root_node)

# 添加子节点
child_node1 = QStandardItem("Child 1")
root_node.appendRow(child_node1)

child_node2 = QStandardItem("Child 2")
root_node.appendRow(child_node2)

tree_view.setModel(model)

tree_view.setSelectionMode(QAbstractItemView.SingleSelection)
tree_view.setStyleSheet("QTreeView::item:selected { background-color: yellow; }")

tree_view.show()
app.exec_()