Rolling mean

rolling_mean.py

class RollingMean(object):
    count = 0
    average = 0
    @property
    def val(self):
        return self.average
    def add(self, value):
        self.average = (value + self.count * self.average) / (self.count + 1)
        self.count += 1
        return self.average
    def reset(self):
        self.count = 0
        self.average = 0