2010/7/8 MRAB <pyt...@mrabarnett.plus.com>: > Hi all, > > I re-implemented the re module, adding new features and speed > improvements. It's available at: > > http://pypi.python.org/pypi/regex > > under the name "regex" so that it can be tried alongside "re". > > I'd be interested in any comments or feedback. How does it compare with > "re" in terms of speed on real-world data? The benchmarks suggest it > should be faster, or at worst comparable. > > How much interest would there be in putting it in Python 3.2? >
Hi, please, let me apologize for posting here, not being a python developer; I'd like to support the inclusion of the new regex library in the standard lib. I use it since the early development versions in my internal app for searching, modifying, ordering, extracting data from text - mainly using the manually created regex patterns. I see, that it is only one specific usecase, and the app isn't time or space critical (input texts up to a few MB, mostly smaller; the processing time is often rather negligible compared to the gui presentation, styling etc.) However, I see it as a great enhancement both in terms of regex features (listed on http://pypi.python.org/pypi/regex ) as well as the behaviour in some cornercases, which aren't effectively usable in the current re (e.g. nested subexpressions with quantifiers - while many of these are more effectively solved with the added possesive quantifiers). I think, this is a far more feature complete engine, which doesn't induce any significant drawbacks (IMO) comparing to the current re and is backward compatible. (The mentioned exception in the scoped flags might be fixable by allowing only explicit scoping (?flags)...(?-flags) or using the current paren, if possible (?flag:...) and treating the bare flag setting parens as global; however, I would consider it quite misleading in the current re, if these flags are set at some other place than at the beginning of the pattern. I don't see the readability enhanced in any way with these flags set at the end, while they should apply from the beginning of the pattern.) Having seen MRABs commitment in the development phase in both - bugfixes and feature additions - including some rather complex ones (in my opinion) like unicode properties, I am also confident, that he could be a competent maintainer of this package in the standardlib as well. just my biased opinion... Regards, Vlastimil Brom _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
