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Abra varias páginas web con diferentes parámetros. PyQt4

Question

He seguido la respuesta de X.Jacobs en esta pregunta , y estaba intentando crear una aplicación que abrirá varias ventanas con diferentes parámetros, pero no funciona, parece que la aplicación está abriendo ventanas, pero no carga la página web.

#! /usr/bin/env python2.7

from PyQt4.QtCore import *
from PyQt4.QtGui import*
from PyQt4.QtWebKit import *
import sys, signal

url = ''http://http://forums.fedoraforum.org/showthread.php?t={0}''

class Opener(QWebView):
    def __init__(self, param=None):
        QWebView.__init__(self)
        self.param = param
        self.loadFinished.connect(self.print_title)

    def print_title(self):
        print self.title()

class Foo(QObject):
    def __init__(self):
        QObject.__init__(self)
        self.count = 0
        self.params = range(4)
        self.mapper = QSignalMapper(self)
        self.mapper.mapped.connect(self.mapper_mapped)

        for i in range(2):
            opener = Opener()
            opener.loadFinished.connect(self.mapper.map)
            self.mapper.setMapping(opener, i)
            opener.loadFinished.emit(True)
            QTimer.singleShot(1, lambda:opener.loadFinished.emit(True))  

    def mapper_mapped(self, gNumber):
        self.count += 1
        if self.count < len(self.params):
            gParam  = self.params[self.count]
            opener = self.mapper.mapping(gNumber)
            opener.load(QUrl(url.format(gParam)))
            opener.show()
            QTimer.singleShot(1, lambda:opener.loadFinished.emit(True)) 

if __name__ == "__main__":
    app = QApplication(sys.argv)
    main = Foo()
    if signal.signal(signal.SIGINT, signal.SIG_DFL):
        sys.exit(app.exec_()) 
    app_exec_()

Answer 1

Hay un par de cosas en ese código :) revisa esta versión de trabajo y mira cómo puedes adaptarla a la tuya:

#!/usr/bin/env python

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

class Foo(QWidget):
    def __init__(self, parent=None):
        super(Foo, self).__init__(parent)    

        self.count  = 0
        self.params = range(4)
        self.url    = ''http://forums.fedoraforum.org/showthread.php?t={0}''

        self.gridLayout = QGridLayout(self)
        self.tabWidget = QTabWidget(self)
        self.gridLayout.addWidget(self.tabWidget, 0, 0, 1, 1)

        self.mapper = QSignalMapper(self)
        self.mapper.mapped.connect(self.on_mapper_mapped)

        for i in range(2):
            grabber = QWebView()
            grabber.loadFinished.connect(self.mapper.map)

            self.mapper.setMapping(grabber, i)
            self.tabWidget.addTab(grabber, "opener {0}".format(str(i)))

            grabber.loadFinished.emit(True)

    @pyqtSlot(int)
    def on_mapper_mapped(self, gNumber):
        self.count += 1
        if self.count < len(self.params):
            gParam = self.params[self.count]

            opener = self.mapper.mapping(gNumber)
            opener.load(QUrl(self.url.format(gParam)))

if __name__ == "__main__":
    import  sys

    app = QApplication(sys.argv)
    main = Foo()
    main.show()
    app.exec_()