code: def notify(self, message, duration=3000, notification_clicked_slot=None, message_level="Information", **kwargs):
          
  
          for notifier in self.__notifiers[self.__maximum_notifiers - 1:]:
              notifier.duration = 150
              notifier.hide_message()
  
          notification = Notification(message=message, time=time.time())
  
          self.register_notification(notification)
  
          notifier = Notification_QLabel(self.__container, **kwargs)
  
          # Signals / Slots.
          notifier.faded_out.connect(self.__notifier__faded_out)
          self.__container.size_changed.connect(notifier.resizeEvent)
          if notification_clicked_slot:
              notifier.notification_clicked.connect(notification_clicked_slot)
          else:
              notifier.setAttribute(Qt.WA_TransparentForMouseEvents)
  
          notifier.show_message(message, duration)
  
          self.__offset_notifiers(-notifier.height() - self.__notifiers_stack_padding)
          self.__notifiers.insert(0, notifier)
  
          if message_level == "Information":
              LOGGER.info("{0} | '{1}'.".format(self.__class__.__name__, self.format_notification(notification)))
          elif message_level == "Warning":
              LOGGER.warning("!> {0} | '{1}'.".format(self.__class__.__name__, self.format_notification(notification)))
          elif message_level == "Exception":
              LOGGER.error("!> {0} | '{1}'.".format(self.__class__.__name__, self.format_notification(notification)))
  
          return True
docs: Displays an Application notification.
  
          :param message: Notification message.
          :type message: unicode
          :param duration: Notification display duration.
          :type duration: int
          :param notification_clicked_slot: Notification clicked slot.
          :type notification_clicked_slot: object
          :param message_level: Message level ( "Information", "Warning", "Exception" ).
          :type message_level: unicode
          :param \*\*kwargs: Keywords arguments.
          :type \*\*kwargs: \*\*
          :return: Method success.
          :rtype: bool