How do I reverse a numpy array along a specific axis?

[prodigenius]

If this is my np array:

[ [ 1 2 3 4 ]
[ 5 6 7 8 ]
[ 9 0 1 2 ] ]

I want to turn it into:

[ [ 4 3 2 1 ]
[ 8 7 6 5 ]
[ 2 1 9 0 ] ]

Note that this is not reversing both axis, only one.

Right now, I'm using

arr = np.array([x[::-1] for x in arr])

.

List comps work, but I'm working with large arrays and would like to avoid non-numpy methods for efficiency reasons. Any ideas?