Pickle incompatibility of numpy arrays between Python 2 and 3

Question

I am trying to load the MNIST dataset linked here in Python 3.2 using this program:

import pickle
import gzip
import numpy


with gzip.open(\'mnist.pkl.gz\',         


        

Answer 1

It appears to be an incompatibility issue between Python 2 and Python 3. I tried loading the MNIST dataset with

    train_set, valid_set, test_set = pickle.load(file, encoding='iso-8859-1')

and it worked for Python 3.5.2