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Fri Jul 9 19:28:08 CEST 2010 · https://mail.python.org/pipermail/python-dev/2010-July/101641.html

anatoly techtonik wrote:
> On Thu, Jul 8, 2010 at 10:52 PM, MRAB <python at mrabarnett.plus.com> wrote:
>> 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.
> 
> And where are the benchmarks?
> In particular it would be interesting to see it compared both to re
> from stdlib and re2 from  http://code.google.com/p/re2/
> 
The benchmarks bm_regex_effbot.py and bm_regex_v8.py both perform
multiple runs of the tests multiple times, giving just the total times
for each set. Here are the averages:

Python26
BENCHMARK        re         regex      ratio
bm_regex_effbot  0.135secs  0.083secs  1.63
bm_regex_v8      0.153secs  0.085secs  1.80


Python31
BENCHMARK        re         regex      ratio
bm_regex_effbot  0.138secs  0.083secs  1.66
bm_regex_v8      0.170secs  0.091secs  1.87

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[Python-Dev] New regex module for 3.2?