90     def _start(self, rearm=False):

    90     def _start(self, rearm=False):

    91         duration = self.interval if rearm else self.initial_timeout

    91         duration = self.interval if rearm else self.initial_timeout

    92         if duration:

    92         if duration:

    93             self.timer = Timer(duration, self.trigger)

    93             self.timer = Timer(duration, self.trigger)

    94             self.timer.start()

    94             self.timer.start()

    95 

    97 

    96     def _stop(self):

    98     def _stop(self):

    97         if self.timer is not None:

    99         if self.timer is not None:

    98             self.timer.cancel()

   100             self.timer.cancel()

    99             self.timer = None

   101             self.timer = None