python - Splitting on regex without removing delimiters

Question

So, I would like to split this text into sentences.

s = "You! Are you Tom? I am Danny."

so I get:

["You!", "Are you Tom?", "I am Danny."]

That is I want to split the text by the regex '[.!?]' without removing the delimiters. What is the most pythonic way to achieve this in python?

I am aware of these questions:

JS string.split() without removing the delimiters

Python split() without removing the delimiter

But my problem has various delimiters (.?!) which complicates the problem.

Answer 1

You can use re.findall with regex .*?[.!?]; the lazy quantifier *? makes sure each pattern matches up to the specific delimiter you want to match on:

import re

s = """You! Are you Tom? I am Danny."""
re.findall('.*?[.!?]', s)
# ['You!', ' Are you Tom?', ' I am Danny.']