code: def moving_average(array, n=3):
      
      ret = _np.cumsum(array, dtype=float)
      ret[n:] = ret[n:] - ret[:-n]
      return ret[n - 1:] / n
docs: Calculates the moving average of an array.
  
      Parameters
      ----------
      array : array
          The array to have the moving average taken of
      n : int
          The number of points of moving average to take
      
      Returns
      -------
      MovingAverageArray : array
          The n-point moving average of the input array