Split string using regular expression, how to ignore apostrophe?

First you'll need to fix the original expression by replacing ) with ] as mentioned by Marcin. Then simply add ' to the list of allowed characters (escaped by a back-slash):

import re
def split_line(line):
    return re.findall('[A-Za-z\']+(?:\`[A-Za-z]+)?',line)

split_line("He's my hero")

#["He's", 'my', 'hero']

Of course, this will not consider any edge cases where the apostrophe is at the beginning or at the end of a word.

Split string using regular expression, how to ignore apostrophe?

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