code: def on_person_update(self, people):
          
          try:
              self.sensor_client.person_update(people)
          except:
              self.exception("Failed to update people")
              raise Exception("Updating people failed")
docs: People have changed
  
          Should always include all people
          (all that were added via on_person_new)
  
          :param people: People to update
          :type people: list[paps.people.People]
          :rtype: None
          :raises Exception: On error (for now just an exception)