old_contents: # Under MIT License, see LICENSE.txt
  import sys
  
  from PyQt4.QtGui import QApplication
  
  from Controller.MainController import MainController
  
  __author__ = 'RoboCupULaval'
  
  if __name__ == '__main__':
      app = QApplication(sys.argv)
      f = MainController()
      f.show()
      sys.exit(app.exec_())
  
new_contents: # Under MIT License, see LICENSE.txt
  import sys
  
  try:
      from PyQt4.QtGui import QApplication
      from Controller.MainController import MainController
  except ImportError:
      sys.stderr.write("PyQt4 n'est pas bien installé sur votre ordinateur. Veuillez installer une des versions " +
                       "disponibles sur https://sourceforge.net/projects/pyqt/files/PyQt4/\n")
  
  __author__ = 'RoboCupULaval'
  
  if __name__ == '__main__':
      try:
          app = QApplication(sys.argv)
          f = MainController()
          f.show()
          sys.exit(app.exec_())
      except NameError:
          pass
  
  
  
subject: add pyqt4 not installed message