How to optimize MAPE code in Python?

Question

I need to have a MAPE function, however I was not able to find it in standard packages ... Below, my implementation of this function.

def mape(actual, predic         


        

Answer 1

Another similar way of doing it using masked_Arrays to mask division by zero is:

import numpy.ma as ma
masked_actual = ma.masked_array(actual, mask=actual==0)
MAPE = (np.fabs(masked_actual - predict)/masked_actual).mean()