import mymath class DataBuffer(object): def __init__(self, length): self.__max = length self.__data = [] def push(self, element): if self.__max == 0: return False if len(self.__data) == self.__max: _ = self.__data.pop(0) self.__data.append(element) return True def average(self): if len(self.__data) != self.__max: return None return mymath.mean(self.__data) def length(self): return len(self.__data) def clear(self): self.__data = []