def start_notification_server():
 global NOTIFICATION_SERVER
 if (NOTIFICATION_SERVER is None):
  NOTIFICATION_SERVER = NotificationServer()
  NOTIFICATION_SERVER.start()
 return NOTIFICATION_SERVER

def start_notification_server ( ) : global NOTIFICATION_SERVER if ( NOTIFICATION_SERVER is None ) : NOTIFICATION_SERVER = NotificationServer ( ) NOTIFICATION_SERVER . start ( ) return NOTIFICATION_SERVER
start notify server this server is dedicated to notification features .