How to convert a string to numpy array?

Question

Converting string to numpy array

Given a string abcxyz, I want it to return a numpy array like:

array(["a", "b", "c", "x", "y", "z"]).

I have tried fromstring

Bingrid = np.fromstring(elements, dtype=str)

but it returns

ValueError: Zero-valued itemsize.

Try: `numpy.array(list("abcxyz"))` – JonSG May 26 '23 at 20:18 — JonSG, May 26 '23 at 20:18
`fromstring()` is for parsing a delimited list, like a CSV. – Barmar May 26 '23 at 20:19 — Barmar, May 26 '23 at 20:19

score 1 · Answer 1 · answered May 26 '23 at 20:34

1

Just in case; if you do not want to convert into a list:

np.fromiter('abcxyz',(str,16))
#array(['a', 'b', 'c', 'x', 'y', 'z'], dtype='<U16')

answered May 26 '23 at 20:34

Talha Tayyab

score 0 · Accepted Answer · answered May 26 '23 at 20:18

0

Use list().

import numpy as np
s = "abcxyz"
print(np.array(list(s)))

Output:

['a' 'b' 'c' 'x' 'y' 'z']

answered May 26 '23 at 20:18

Nick ODell

score 0 · Answer 3 · answered May 26 '23 at 20:18

0

How about np.array(list("abcxyz")) ? No need for any special methods.

answered May 26 '23 at 20:18

hobbs

score 0 · Answer 4 · answered May 26 '23 at 20:18

0

Convert to a list, then to an array:

import numpy as np
Bingrid = np.array(list("abcxyz"))

answered May 26 '23 at 20:18

Joooeey

score 0 · Answer 5 · answered May 26 '23 at 20:37

0

This one works for me:

import numpy as np
mystr = "100110"
res =  np.array(list(mystr))
print(res)

answered May 26 '23 at 20:37

Ted Vu

5 Answers5