How to combine strings from 2 numpy arrays

Question

arr = [12345, 12345, 12345, 12345] paths = [67890, 67890, 67890, 67890]

How can I combine these two numpy arrays to get this output below? output = [1234567890, 1234567890, 1234567890, 1234567890]

Does this answer your question? [Element-wise string concatenation in numpy](https://stackoverflow.com/questions/9958506/element-wise-string-concatenation-in-numpy) — obchardon, Jul 06 '21 at 14:29

score 1 · Accepted Answer · answered Jul 06 '21 at 14:27

1

IIUC, here's one way:

arr_list = [arr, paths]
result = np.apply_along_axis(''.join, 0, arr_list)

answered Jul 06 '21 at 14:27

Nk03

I suspect a list comprehension with zip will be faster. – hpaulj Jul 06 '21 at 14:35
I also thought of it. But, I've not compared performance @hpaulj – Nk03 Jul 06 '21 at 14:45
`numpy.char.add(arr,path)` could be another option, maybe it is easier to read. – obchardon Jul 06 '21 at 15:06

1 Answers1