qt web scraper

qwebpage.py

#http://stackoverflow.com/questions/21274865/scrape-multiple-urls-using-qwebpage
import sys
from PyQt4 import QtCore, QtGui, QtWebKit

class WebPage(QtWebKit.QWebPage):
    def __init__(self):
        super(WebPage, self).__init__()
        self.mainFrame().loadFinished.connect(self.handleLoadFinished)

    def start(self, urls):
        self._urls = iter(urls)
        self.fetchNext()

    def fetchNext(self):
        try:
            url = next(self._urls)
        except StopIteration:
            return False
        else:
            self.mainFrame().load(QtCore.QUrl(url))
        return True

    def processCurrentPage(self):
        url = self.mainFrame().url().toString()
        html = self.mainFrame().toHtml()
        # do stuff with html...
        print('loaded: [%d bytes] %s' % (self.bytesReceived(), url))

    def handleLoadFinished(self):
        self.processCurrentPage()
        if not self.fetchNext():
            QtGui.qApp.quit()

if __name__ == '__main__':

    # generate some test urls
    urls = []
    url = 'http://pyqt.sourceforge.net/Docs/PyQt4/%s.html'
    for name in dir(QtWebKit):
        if name.startswith('Q'):
            urls.append(url % name.lower())

    app = QtGui.QApplication(sys.argv)
    webpage = WebPage()
    webpage.start(urls)
    sys.exit(app.exec_())