code: def wheel_delta_discrete(self):
  		
  
  		delta =  self._libinput. \
  			libinput_event_tablet_tool_get_wheel_delta_discrete(self._handle)
  		changed = self._libinput.libinput_event_tablet_tool_wheel_has_changed(
  			self._handle)
  		return delta, changed
docs: The delta for the wheel in discrete steps (e.g. wheel clicks) and
  		whether it has changed in this event.
  
  		Returns:
  			(int, bool): The delta of the wheel, in discrete steps, compared to
  			the last event and whether it has changed.