def dispatch_failed(self, context):
        """Print the unhandled exception and exit the application."""
        traceback.print_exception(
            context.exc_type, context.exc_value, context.traceback)
        raise SystemExit(1)
def dispatch_failed ( self , context ) : traceback . print_exception ( context . exc_type , context . exc_value , context . traceback ) raise SystemExit ( 1 )
Print the unhandled exception and exit the application.