Fix moving average for 0 values (#80476)

2022-11-17 21:57:26 +01:00 · 2022-11-17 21:57:26 +01:00 · f82c4c7633
parent 1a274adc28
commit f82c4c7633
1 changed files with 1 additions and 1 deletions
--- a/homeassistant/components/filter/sensor.py
+++ b/homeassistant/components/filter/sensor.py
@ -612,7 +612,7 @@ class TimeSMAFilter(Filter, SensorEntity):

        moving_sum = 0
        start = new_state.timestamp - self._time_window
-        prev_state = self.last_leak or self.queue[0]
+        prev_state = self.last_leak if self.last_leak is not None else self.queue[0]
        for state in self.queue:
            moving_sum += (state.timestamp - start).total_seconds() * prev_state.state
            start = state.timestamp