Swap zeros in numpy matrix

Question

I have a numpy matrix like so:

array([[2,  1, 23, 32],
       [34, 3, 3, 0],
       [3, 33, 0, 0],
       [32, 0, 0, 0]], dtype=int32)

Now

Answer 1

Trivial attempt in non-numpy based python -

>>> arr = [[2,  1, 23, 32],
...        [34, 3, 3, 0],
...        [3, 33, 0, 0],
...        [32, 0, 0, 0]]
... 
>>> t_arr = [[0 for _ in range(cur_list.count(0))]\
            + [i for i in cur_list if i!=0]\
            for cur_list in arr]
>>> t_arr
[[2, 1, 23, 32], [0, 34, 3, 3], [0, 0, 3, 33], [0, 0, 0, 32]]