How to disconnect from page session in QWebView?

Question

Python

I have the following code:

def exec_func_qt(ip, port, user, password, proxy_numb):
    QNetworkProxy.setApplicationProxy(
        QNetworkProxy(
            QNetworkProxy.HttpProxy, 
            hostName=ip,
            port=port,
            user=user,
            password=password

        )
    )
    app = QApplication(sys.argv) 
    web = QWebView()

    web.load(QUrl("https://google.com/"))
    
    def callback_function():
        sleep(3)
        app.quit()

    def on_load_finished():
        t = Thread(target=callback_function)
        t.start()

    #web.show()
    web.loadFinished.connect(on_load_finished)

    app.exec_()

As you can see, when loading the page, I don’t have a disconnect from the page, because I didn’t understand how to do it, instead, I just create a thread and then the application closes, because if you put a delay in the same thread, the page simply stops loading , and after loading the page, I need to load js for a couple of seconds, I looked through all the documentaries (which are very few) on PyQT, but I didn’t find anything about this, maybe I don’t understand something, can you tell me how to do it?