statistics.py 文件源码

def async_update(self):
        """Get the latest data and updates the states."""
        if not self.is_binary:
            try:
                self.mean = round(statistics.mean(self.states), 2)
                self.median = round(statistics.median(self.states), 2)
                self.stdev = round(statistics.stdev(self.states), 2)
                self.variance = round(statistics.variance(self.states), 2)
            except statistics.StatisticsError as err:
                _LOGGER.warning(err)
                self.mean = self.median = STATE_UNKNOWN
                self.stdev = self.variance = STATE_UNKNOWN
            if self.states:
                self.total = round(sum(self.states), 2)
                self.min = min(self.states)
                self.max = max(self.states)
            else:
                self.min = self.max = self.total = STATE_UNKNOWN