def stop(self):
        app = self._qapp
        app.exit()
        app._in_event_loop = False
Create a technical 404 error response. The exception should be the Http404.
dataset/ETHPy150Open nucleic/enaml/enaml/qt/qt_application.py/QtApplication.stop--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/views/debug.py/technical_404_response