def change_period(self, new_period):
self._renew_period = new_period
if self._renew_handle:
Planner.kill_task(self._renew_handle)
self._renew_handle = None
if self._renew_period > 0:
self._renew_handle = Planner.repeat(self._renew_period, self._update_value)
def remove_trigger(self, handle):
for listener in self._listeners:
if listener[0] == handle:
self._listeners.remove(listener)
if not self._listeners:
Planner.kill_task(self._renew_handle)
self._renew_handle = None
return True
return False
