PyQt4 stackoverflow

pyqt4_example_3rd.py

import sys
from PyQt4 import QtGui, QtCore

class Window(QtGui.QMainWindow):
    def __init__(self):
        QtGui.QMainWindow.__init__(self)

        widget = QtGui.QWidget()
        widget1 = QtGui.QLabel("Page 1", widget)
        widget2 = QtGui.QLabel("Page 2", widget)
        widget2.setGeometry(50, 10, 70, 10)

        btn1 = QtGui.QPushButton("Page 1")
        btn1.setCheckable(True)
        btn1.setChecked(True)
        btn1.toggled.connect(widget1.setShown)
        btn2 = QtGui.QPushButton("Page 2")
        btn2.setCheckable(True)
        btn2.setChecked(True)
        btn2.toggled.connect(widget2.setShown)

        layout = QtGui.QVBoxLayout()
        layout.addWidget(widget)
        layout.addWidget(btn1)
        layout.addWidget(btn2)

        cent_widget = QtGui.QWidget()
        cent_widget.setLayout(layout)
        self.setCentralWidget(cent_widget)


if __name__ == '__main__':
    app = QtGui.QApplication(sys.argv)
    w = Window()
    w.show()
    sys.exit(app.exec_())