如何在PyQtWebkit中为QNetworkRequest设置User-Agent？

pip install PyQt5
pip install PyQtWebEngine

import sys
from PyQt5.QtCore import QUrl
from PyQt5.QtWidgets import QApplication
from PyQt5.QtWebEngineWidgets import QWebEnginePage

class CustomWebPage(QWebEnginePage):
    def __init__(self, parent=None):
        super(CustomWebPage, self).__init__(parent)

    def createRequest(self, operation, request, outgoingData):
        request.setHeader(QNetworkRequest.UserAgentHeader, "MyCustomUserAgent")
        return super(CustomWebPage, self).createRequest(operation, request, outgoingData)

app = QApplication(sys.argv)
web_page = CustomWebPage()

web_page.load(QUrl("https://www.example.com"))
web_page.show()

sys.exit(app.exec_())