How to extract group pattern from re pattern?

Question

I have simple python code:

import re


regex=re.compile('some_regex(regex_in_first_group)other_regex')

Is there a way of extracting from such regular expression only expression that is in first group?

so in this situation I would like to obtain:

group_regex='regex_in_first_group'

Answer 1

Yes - use match objects. See https://docs.python.org/3.8/library/re.html#match-objects and especially the description of Match.group() .