Switching from PyQt4 to PyQt5, the optimal solution?

Question

Python

Good day, friends, I used to work with page parsing through PyQt4, and now, to the best of circumstances, I had to switch to PyQt5, and no matter how long it has been serviced :)
I transferred many frameworks to QT5, but I can’t figure out QWebEngineView as QWebView, in particular
doc = view.page().mainFrame().documentElement()
code:

import sys

from PyQt5.QtNetwork import QNetworkProxyFactory, QNetworkRequest
from PyQt5.QtWebEngineWidgets import QWebEngineView as QWebView, QWebEnginePage
from PyQt5.QtWebKit import QWebSettings
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *


if __name__ == '__main__':
    app = QApplication(sys.argv)

    # Чтобы не было проблем запуска компов с прокси:
    QNetworkProxyFactory.setUseSystemConfiguration(True)

    QWebSettings.globalSettings().setAttribute(QWebSettings.DeveloperExtrasEnabled, True)

    view = QWebView()
    view.page()
    view.show()
    view.setUrl(QUrl('https://www.myscore.ru/match/lhcHgzkK/#match-summary'))
    # Ждем пока прогрузится страница

    loop = QEventLoop()
    view.loadFinished.connect(loop.quit)
    loop.exec_()

    doc = view.page().mainFrame().documentElement()
    print(doc.findFirst("#statistics-0-statistic a").toPlainText())
    print(doc.findFirst("#statistics-1-statistic a").toPlainText())
    print(doc.findFirst("#statistics-2-statistic a").toPlainText())

    table = doc.findFirst("#tab-statistics-0-statistic .parts")
    for tr in table.findAll('tr'):
        l, text, r = tr.toPlainText().split('\t')
        print(l, text, r)

    # sys.exit(app.exec_())

Mistake:

line 32, in <module>
    doc = view.page().mainFrame().documentElement()
AttributeError: 'QWebEnginePage' object has no attribute 'mainFrame'

I can not find an alternative in the manual of the 5th version.