import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *
            
class MainWindow(QMainWindow):
    def __init__(self, parent=None):
        super(MainWindow,self).__init__(parent)
        
        quitAction = QAction('&Quit', self)
        quitAction.setShortcut('Ctrl+Q')
        quitAction.setStatusTip('Exit application')
        self.connect(quitAction, SIGNAL('triggered()'), SLOT('close()'))
        
        aboutAction = QAction('&About',  self)
        aboutAction.setStatusTip('About App ...')
        self.connect(aboutAction, SIGNAL("triggered()"), self.showAbout)
        
        menuBar = self.menuBar()
        menuBar.clear()
        fileMenu = menuBar.addMenu('&File')
        fileMenu.addAction(quitAction)
        helpItem = menuBar.addMenu('&Help')
        helpItem.addAction(aboutAction)

    def showAbout(self):
        pass

app = QApplication(sys.argv)
form = MainWindow()
form.show()
app.exec_()