write split words of sentence to file

[bluefrog]

When I test the split on Python's IDLE, I get a list of words, for example:

Python 3.6.5 (default, Apr  1 2018, 05:46:30) 
[GCC 7.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> sample_text='some sample text'
>>> sample_text.split()
['some', 'sample', 'text']

But when attempting the same to write to a file

import csv
import pathlib
some_text='some sample text'
target_path = pathlib.Path('python/t.txt')
with target_path.open('w+', newline='\n') as target_file:
    writer = csv.writer(target_file)
    for t in some_text.split():
        writer.writerow(t)

the resulting file output appears as follows:

$ cat ../t.txt
s,o,m,e
s,a,m,p,l,e
t,e,x,t

Can somebody help explain the difference?
Thanks

[micseydel]

Maybe you intended

writer.writerow(some_text.split())

instead of your last two lines?