Rearrange columns of numpy 2D array

Question

Is there a way to change the order of the columns in a numpy 2D array to a new and arbitrary order? For example, I have an array

array([[10, 20, 30, 40, 50],         


        

Answer 1

The easiest way in my opinion is:

a = np.array([[10, 20, 30, 40, 50],
              [6,  7,  8,  9,  10]])
print(a[:, [0, 2, 4, 3, 1]])

the result is:

[[10 30 50 40 20]
 [6  8  10 9  7 ]]