[Python-Dev] re performance

MRAB python at mrabarnett.plus.com
Fri Jan 27 16:24:44 EST 2017


On 2017-01-27 17:03, Łukasz Langa wrote:
>
>> On Jan 26, 2017, at 5:16 PM, MRAB <python at mrabarnett.plus.com 
>> <mailto:python at mrabarnett.plus.com>> wrote:
>
>>> So, it seems as if regex already uses a better algorithm although I
>>> couldn't find any reference to any regex theoretical framework like dfa,
>>> nfa, thompson multiple-state simulation or something.
>>>
>> It still uses backtracking, like in the re module.
>
> What’s the status of regex inclusion in the stdlib?
>
>
I'm not bothered about it. It's quite a bit bigger than the re module, 
and, anyway, keeping it as a third-party module gives me more freedom to 
make updates, which are available for a range of Python versions.



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