CODEWITHSUNDEEP
pythonregex
whitenoisedb
whitenoisedb

Reputation: 403

Capture group inside non-capturing group

I want to do capture two groups, but one is inside a non-capture group. i.e.

import re

text = 'column{fields}'
parsed = re.search(r'(\w+)(?:{(\w+)})', text)
parsed.groups() # prints ('column', 'fields')

That works, however if my text is only 'column', regex is NoneType.

Upvotes: 5

Views: 1604

Answers (1)

anubhava
anubhava

Reputation: 785126

You can make 2nd non-capturing group optional:

>>> text = 'column'
>>> parsed = re.search(r'(\w+)(?:{(\w+)})?', text)
>>> parsed.groups()
('column', None)

? at the end of (?:{(\w+)})? will make part after column i.e. (?:{(\w+)}) optional.

Upvotes: 2

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