PyQt Network Manager

test.py

from PyQt4.QtGui import *  
from PyQt4.QtCore import *  
from PyQt4.QtWebKit import *  
from PyQt4.QtNetwork import *
import sys

class Render(QWebPage):  
  def __init__(self, url):  
        self.app = QApplication(sys.argv)  
        QWebPage.__init__(self)  
        self.loadFinished.connect(self._loadFinished)  
        u = QUrl(url)

        authenticator = QAuthenticator()
        authenticator.setUser('username')
        authenticator.setPassword('password')
        
        self.manager = QNetworkAccessManager(self)
        #I guess I'm just confused how to use this manager with the rest of my code.
        self.manager.authenticationRequired.emit(<something>, authenticator)

        self.mainFrame().load(u)  
        self.app.exec_()  
  
  def _loadFinished(self, result):  
        self.frame = self.mainFrame()  
        self.app.quit()  

r = Render('http://mysite.com')

import pdb; pdb.set_trace()