Non-capturing group in Python regex

Description

Sometimes you’ll want to use a group to denote a part of a regular expression, but aren’t interested in retrieving the group’s contents. You can make this fact explicit by using a non-capturing group: (?:...), where you can replace the … with any other regular expression. The non-capturing group still matches and consumes the matched text. Note that consuming means adding the matched text to the match value.

Example

>>> m = re.match("([abc])+", "abc")
>>> m.groups()
('c',)
>>> m = re.match("(?:[abc])+", "abc")
>>> m.groups()
()