Shuffle a numpy array

Question

I have a 2-d numpy array that I would like to shuffle. Is the best way to reshape it to 1-d, shuffle and reshape again to 2-d or is it possible to shuffle without reshaping?

Answer 1

You could shuffle a.flat:

>>> np.random.shuffle(a.flat)
>>> a
array([[6, 1, 2],
       [3, 5, 0],
       [7, 8, 4]])