Add Space Between Numbers?

[jmair]

I have phone extensions that need a space between the as they are printed out. for example, instead of "my extension is 123" have it printed out as "my extension is 1 2 3".

where can i look to split numbers with a whitespace between them?

[wavic]

text = "my extension is 1 2 3".split()
new_txt = f'{" ".join(text[:-3])} {"".join(text[-3:])}'

[jmair]

I appreciate the help however I need to add space between the numbers and the reply will likely have the extension in different locations within the string.

from "My extension is 123" to "My extension is 1 2 3"
or "123 is my extension" to "1 2 3 is my extension"

In c# I would parse the string to an array and replace each number with a split(), but i see python's split() works a bit differently. I'm just not sure where to look for it in python and with all the built in functions in there I wouldn't be surprised if something already exists.

[snippsat]

Here a couple of ways.

>>> text = "my extension is 123"
>>> s = text.partition('123')
>>> s[0] + ' '.join(list(s[1]))
'my extension is 1 2 3'

Regex.

>>> import re
>>> 
>>> text = "my extension is 123"
>>> re.sub(r'(\d)', r'\1 ', text)[:-1]
'my extension is 1 2 3'