RE split multiple arguments | (or) returns none python

Question

I\'m using the RE expression in python and trying to split a chunk of text by period and by exclamation mark. However when I split it, I get a \"None\" in the result

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Answer 1

Here's a simpler expression (any period not followed or preceeded by a period) with the outer capturing group around the whole or | clause to avoid the None, not just the first part:

re.split(r'((?