pyqt4 - twitch channel stats

import urllib2
import json
from PyQt4 import QtCore, QtGui

streamid = "twitch"
try:
    _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
    def _fromUtf8(s):
        return s

try:
    _encoding = QtGui.QApplication.UnicodeUTF8
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig)

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName(_fromUtf8("MainWindow"))
        MainWindow.setWindowTitle(_translate("Twitch Monitor", "Twitch Monitor", None))
        MainWindow.resize(342, 327)
        self.centralwidget = QtGui.QWidget(MainWindow)
        self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
        self.label = QtGui.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(10, 10, 321, 31))
        font = QtGui.QFont()
        font.setPointSize(16)
        self.label.setFont(font)
        self.label.setObjectName(_fromUtf8("label"))
        self.label_3 = QtGui.QLabel(self.centralwidget)
        self.label_3.setGeometry(QtCore.QRect(10, 50, 271, 31))
        self.label_3.setObjectName(_fromUtf8("label_3"))
        self.label_4 = QtGui.QLabel(self.centralwidget)
        self.label_4.setGeometry(QtCore.QRect(10, 70, 331, 31))
        self.label_4.setObjectName(_fromUtf8("label_4"))
        self.label_5 = QtGui.QLabel(self.centralwidget)
        self.label_5.setGeometry(QtCore.QRect(10, 100, 311, 16))
        self.label_5.setObjectName(_fromUtf8("label_5"))
        #MainWindow.setCentralWidget(self.centralwidget)
        self.statusbar = QtGui.QStatusBar(MainWindow)
        self.statusbar.setObjectName(_fromUtf8("statusbar"))
        self.pushButton = QtGui.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(130, 280, 75, 23))
        self.pushButton.setObjectName(_fromUtf8("pushButton"))
        self.pushButton.clicked.connect(self.retranslateUi)
        #MainWindow.setStatusBar(self.statusbar)
        self.pushButton.setText(_translate("MainWindow", "Refresh", None))

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        apilink = 'https://api.twitch.tv/kraken/streams/{0}'.format(streamid)
        req = urllib2.urlopen(apilink)
        mydata = json.load(req)
        mystr = "Stream Data for {0}".format(streamid)
        self.label.setText(_translate("MainWindow", mystr, None))
        if mydata["stream"] == None:
            print "Stream offline"
            self.label_3.setText(_translate("MainWindow", "Stream is offline!", None))
            self.label_3.setStyleSheet('color: red')
            self.label_4.hide()
            self.label_5.hide()
        else:
            mystr = "Streaming Game: {0}".format(mydata["stream"]["channel"]["game"])
            self.label_3.setText(_translate("MainWindow", mystr, None))
            mystr = "Viewers: {0}".format(mydata["stream"]["viewers"])
            self.label_4.setText(_translate("MainWindow", mystr, None))
            mystr = "Status: {0}".format(mydata["stream"]["channel"]["status"])
            self.label_5.setText(_translate("MainWindow", mystr, None))

if __name__ == "__main__":
    import sys
    app = QtGui.QApplication(sys.argv)
    Dialog = QtGui.QDialog()
    ui = Ui_MainWindow()
    ui.setupUi(Dialog)
    Dialog.show()
    sys.exit(app.exec_())
#print req.read()