[Python-Dev] New regex module for 3.2?

[Collin Winter]

On Fri, Jul 9, 2010 at 10:28 AM, MRAB <python at mrabarnett.plus.com> wrote:
> 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

Out of curiosity, what are the results for the bm_regex_compile benchmark?

Collin