Python How to put a space before and after all characters (not letters) in a string?

Question

Python

We need the most optimal code, since there are a lot of lines
. For example: 'hello. 123' -> 'hello . 123'

Answer 1

import re
s = 'привет. 123,56    !  78'
print(re.sub(r'([.,!?])', r' \1 ', s))  # добавляет пробелы
print(re.sub(r' *([.,!?]) *', r' \1 ', s))  # оставляет ровно по одному пробелу до/после