[docs] [issue30004] in regex-howto, improve example on grouping

[Mariatta Wijaya]

Mariatta Wijaya <mariatta.wijaya at gmail.com> added the comment:


New changeset 3e60747025edc34b503397ab8211be59cfdd05cd by Mariatta (Miss Islington (bot)) in branch '3.6':
bpo-30004: Fix the code example of using group in Regex Howto Docs (GH-4443) (GH-4554)
https://github.com/python/cpython/commit/3e60747025edc34b503397ab8211be59cfdd05cd


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