old_contents: #!/usr/bin/env python
  
  """
  fungui is a software to help measuring the shell of a fungi.
  """
  
  # Import modules
  from PyQt4 import QtGui, QtCore
  
new_contents: #!/usr/bin/env python
  
  """
  fungui is a software to help measuring the shell of a fungi.
  """
  
  # Import modules
  from PyQt4 import QtGui, QtCore
  import sys
  
  
  # Global variables
  FRAME_WIDTH = 1020
  FRAME_HEIGHT = 480
  
  class MainWindow(QtGui.QMainWindow):
      def __init__(self):
          QtGui.QMainWindow.__init__(self)
  
          # create stuff
          self.wdg = Widget()
          self.setCentralWidget(self.wdg)
          self.createActions()
          self.createMenus()
          #self.createStatusBar()
  
           # format the main window
          self.resize(FRAME_WIDTH, FRAME_HEIGHT)
          self.center()
          self.setWindowTitle('Fungui')
  
          # show windows
          self.show()
          self.wdg.show()
          
      def center(self):
          qr = self.frameGeometry()
          cp = QtGui.QDesktopWidget().availableGeometry().center()
          qr.moveCenter(cp)
          self.move(qr.topLeft())        
  
      def about(self):
          QtGui.QMessageBox.about(self, self.tr("About fungui"),
              self.tr("fungui..."))
  
      def createActions(self):
          self.exitAct = QtGui.QAction(self.tr("E&xit"), self)
          self.exitAct.setShortcut(self.tr("Ctrl+Q"))
          self.exitAct.setStatusTip(self.tr("Exit the application"))
          self.exitAct.triggered.connect(self.close)
  
          self.aboutAct = QtGui.QAction(self.tr("&About"), self)
          self.aboutAct.setStatusTip(self.tr("Show the application's About box"))
          self.aboutAct.triggered.connect(self.about)
  
          self.aboutQtAct = QtGui.QAction(self.tr("About &Qt"), self)
          self.aboutQtAct.setStatusTip(self.tr("Show the Qt library's About box"))
          self.aboutQtAct.triggered.connect(QtGui.qApp.aboutQt)
  
      def createMenus(self):
          self.fileMenu = self.menuBar().addMenu(self.tr("&File"))
          self.fileMenu.addAction(self.exitAct)
  
          self.helpMenu = self.menuBar().addMenu(self.tr("&Help"))
          self.helpMenu.addAction(self.aboutAct)
          self.helpMenu.addAction(self.aboutQtAct)
  
  class Widget(QtGui.QWidget):
      
      def __init__(self):
          super(Widget, self).__init__()
  
          # set font for tips
          QtGui.QToolTip.setFont(QtGui.QFont('SansSerif', 10))
  
          self.create_frame()
          
  
      def create_frame(self):
          """The frame"""
          self.main_frame = QtGui.QWidget()        
         
  
          
  def main():
      app = QtGui.QApplication(sys.argv)
      mw = MainWindow()
      sys.exit(app.exec_()) 
   
  if __name__ == '__main__':
      main()        
subject: Create a frame with a menu bar.