On Tue, Jul 27, 2010 at 6:43 PM, R. David Murray rdmur...@bitdance.comwrote:
On Tue, 27 Jul 2010 08:27:35 +0200, Stefan Behnel stefan...@behnel.de
wrote:
Gregory P. Smith, 27.07.2010 07:40:
A max cache size of 100 was too small. I just increased it to 500 in
the
py3k branch along with
On Wed, Jul 28, 2010 at 4:50 PM, Gregory P. Smith g...@krypto.org wrote:
On Tue, Jul 27, 2010 at 6:43 PM, R. David Murray rdmur...@bitdance.com
wrote:
On Tue, 27 Jul 2010 08:27:35 +0200, Stefan Behnel stefan...@behnel.de
wrote:
Gregory P. Smith, 27.07.2010 07:40:
Random replacement
Gregory P. Smith, 27.07.2010 07:40:
A max cache size of 100 was too small. I just increased it to 500 in the
py3k branch along with implementing a random replacement cache overflow
policy. It now randomly drops 20% of the compiled regular expression cache
instead of simply dropping the entire
On Tue, 27 Jul 2010 08:27:35 +0200, Stefan Behnel stefan...@behnel.de wrote:
Gregory P. Smith, 27.07.2010 07:40:
A max cache size of 100 was too small. I just increased it to 500 in the
py3k branch along with implementing a random replacement cache overflow
policy. It now randomly drops
Am 22.07.2010 12:53, schrieb Guido van Rossum:
On Fri, Jul 16, 2010 at 6:08 PM, Georg Brandl g.bra...@gmx.net wrote:
Nevertheless, the authoritative reference for our regex engine is its
docs, i.e. http://docs.python.org/library/re.html -- and that states
clearly that inline flags apply to the
On Thu, Jul 22, 2010 at 3:26 PM, Nick Coghlan ncogh...@gmail.com wrote:
On Fri, Jul 23, 2010 at 12:42 AM, Georg Brandl g.bra...@gmx.net wrote:
Sure -- I don't think this is a showstopper for regex. However if we
don't
include regex in a future version, we might think about increasing
On 07/22/2010 01:34 PM, Georg Brandl wrote:
Timings (seconds to run the test suite):
re 26.689 26.015 26.008
regex 26.066 25.797 25.865
So, I thought there wasn't a difference in performance for this use case
(which is compiling a lot of regexes and matching most of them only a
few
On Fri, Jul 23, 2010 at 8:16 PM, Hrvoje Niksic hrvoje.nik...@avl.com wrote:
The performance trade-off should make regex slower with sufficiently small
compiled regex cache, when a lot of time is wasted on compilation. But as
the cache gets larger (and, for fairness, of the same size in both
Am 23.07.2010 11:16, schrieb Hrvoje Niksic:
On 07/22/2010 01:34 PM, Georg Brandl wrote:
Timings (seconds to run the test suite):
re 26.689 26.015 26.008
regex 26.066 25.797 25.865
So, I thought there wasn't a difference in performance for this use case
(which is compiling a lot of
Am 13.07.2010 15:35, schrieb Antoine Pitrou:
On Tue, 13 Jul 2010 15:20:23 +0100
Michael Foord fuzzy...@voidspace.org.uk wrote:
On 13/07/2010 15:17, Reid Kleckner wrote:
On Mon, Jul 12, 2010 at 2:07 PM, Nick Coghlanncogh...@gmail.com wrote:
MRAB's module offers a superset of re's
On Fri, Jul 16, 2010 at 6:08 PM, Georg Brandl g.bra...@gmx.net wrote:
Nevertheless, the authoritative reference for our regex engine is its
docs, i.e. http://docs.python.org/library/re.html -- and that states
clearly that inline flags apply to the whole regex.
I think with a new regex
On Thu, Jul 22, 2010 at 9:34 PM, Georg Brandl g.bra...@gmx.net wrote:
So, I thought there wasn't a difference in performance for this use case
(which is compiling a lot of regexes and matching most of them only a
few times in comparison). However, I found that looking at the regex
caching is
Am 22.07.2010 14:12, schrieb Nick Coghlan:
On Thu, Jul 22, 2010 at 9:34 PM, Georg Brandl g.bra...@gmx.net wrote:
So, I thought there wasn't a difference in performance for this use case
(which is compiling a lot of regexes and matching most of them only a
few times in comparison). However, I
On Thu, Jul 22, 2010 at 7:42 AM, Georg Brandl g.bra...@gmx.net wrote:
Am 22.07.2010 14:12, schrieb Nick Coghlan:
On Thu, Jul 22, 2010 at 9:34 PM, Georg Brandl g.bra...@gmx.net wrote:
So, I thought there wasn't a difference in performance for this use case
(which is compiling a lot of regexes
On Fri, Jul 23, 2010 at 12:42 AM, Georg Brandl g.bra...@gmx.net wrote:
Sure -- I don't think this is a showstopper for regex. However if we don't
include regex in a future version, we might think about increasing MAXCACHE
a bit, and maybe not clear the cache when it reaches its max length, but
2010/7/9 Georg Brandl g.bra...@gmx.net:
Am 09.07.2010 02:35, schrieb MRAB:
1. Some of the inline flags are scoped; for example, putting (?i) at
the end of a regex will now have no effect because it's no longer a
global, all-or-nothing, flag.
That is problematic. I've often seen people put
Am 16.07.2010 17:08, schrieb Vlastimil Brom:
2010/7/9 Georg Brandl g.bra...@gmx.net:
Am 09.07.2010 02:35, schrieb MRAB:
1. Some of the inline flags are scoped; for example, putting (?i) at
the end of a regex will now have no effect because it's no longer a
global, all-or-nothing, flag.
On Thu, Jul 8, 2010 at 12:52 PM, MRAB pyt...@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
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.
On Mon, Jul 12, 2010 at 2:07 PM, Nick Coghlan ncogh...@gmail.com wrote:
MRAB's module offers a superset of re's features rather than a subset
though, so once it has had more of a chance to bake on PyPI it may be
worth another look.
I feel like the new module is designed to replace the current
On 13/07/2010 15:17, Reid Kleckner wrote:
On Mon, Jul 12, 2010 at 2:07 PM, Nick Coghlanncogh...@gmail.com wrote:
MRAB's module offers a superset of re's features rather than a subset
though, so once it has had more of a chance to bake on PyPI it may be
worth another look.
I feel
On Tue, 13 Jul 2010 15:20:23 +0100
Michael Foord fuzzy...@voidspace.org.uk wrote:
On 13/07/2010 15:17, Reid Kleckner wrote:
On Mon, Jul 12, 2010 at 2:07 PM, Nick Coghlanncogh...@gmail.com wrote:
MRAB's module offers a superset of re's features rather than a subset
though, so once it
On Mon, Jul 12, 2010 at 9:42 AM, Steven D'Aprano st...@pearwood.info wrote:
On Sun, 11 Jul 2010 09:37:22 pm Eric Smith wrote:
re2 comparison is interesting from the point of if it should be
included in stdlib.
Is it re2 or regex? I don't see having 2 regular expression engines
in the
On 12/07/2010 15:07, Nick Coghlan wrote:
On Mon, Jul 12, 2010 at 9:42 AM, Steven D'Apranost...@pearwood.info wrote:
On Sun, 11 Jul 2010 09:37:22 pm Eric Smith wrote:
re2 comparison is interesting from the point of if it should be
included in stdlib.
Is it re2 or regex? I
On Mon, 12 Jul 2010 16:18:38 +0100
Michael Foord fuzzy...@voidspace.org.uk wrote:
On 12/07/2010 15:07, Nick Coghlan wrote:
On Mon, Jul 12, 2010 at 9:42 AM, Steven D'Apranost...@pearwood.info
wrote:
On Sun, 11 Jul 2010 09:37:22 pm Eric Smith wrote:
re2 comparison is
On Mon, 2010-07-12 at 16:18 +0100, Michael Foord wrote:
On 12/07/2010 15:07, Nick Coghlan wrote:
On Mon, Jul 12, 2010 at 9:42 AM, Steven D'Apranost...@pearwood.info
wrote:
re2 deliberately omits some features for efficiency reasons, hence is
not even on the table as a possible
On Mon, Jul 12, 2010 at 8:18 AM, Michael Foord
fuzzy...@voidspace.org.uk wrote:
On 12/07/2010 15:07, Nick Coghlan wrote:
On Mon, Jul 12, 2010 at 9:42 AM, Steven D'Apranost...@pearwood.info
wrote:
On Sun, 11 Jul 2010 09:37:22 pm Eric Smith wrote:
re2 comparison is interesting from the
On Fri, Jul 9, 2010 at 6:59 PM, Jeffrey Yasskin jyass...@gmail.com wrote:
While the re2 comparison might be interesting from an abstract
standpoint, it intentionally supports a different regex language from
Python so that it can run faster and use less memory. Since re2 can
never replace
On 7/11/2010 5:19 AM, anatoly techtonik wrote:
On Fri, Jul 9, 2010 at 6:59 PM, Jeffrey Yasskinjyass...@gmail.com wrote:
While the re2 comparison might be interesting from an abstract
standpoint, it intentionally supports a different regex language from
Python so that it can run faster and use
On Sun, Jul 11, 2010 at 7:19 PM, anatoly techtonik techto...@gmail.com wrote:
On Fri, Jul 9, 2010 at 6:59 PM, Jeffrey Yasskin jyass...@gmail.com wrote:
While the re2 comparison might be interesting from an abstract
standpoint, it intentionally supports a different regex language from
Python
On Sun, 11 Jul 2010 09:37:22 pm Eric Smith wrote:
re2 comparison is interesting from the point of if it should be
included in stdlib.
Is it re2 or regex? I don't see having 2 regular expression engines
in the stdlib.
There's precedence though... the old regex engine and the new re engine
On Sun, Jul 11, 2010 at 7:42 PM, Steven D'Aprano st...@pearwood.info wrote:
On Sun, 11 Jul 2010 09:37:22 pm Eric Smith wrote:
re2 comparison is interesting from the point of if it should be
included in stdlib.
Is it re2 or regex? I don't see having 2 regular expression engines
in the
Am 09.07.2010 02:35, schrieb MRAB:
That's not what I'm asking. I'm asking what happens if you take an
existing Python installation's re module, move it aside, and drop
regex in its place as re.py.
Doing that and then running Python's own test suite as well as the
test suites of major
On Thu, Jul 8, 2010 at 10:52 PM, MRAB pyt...@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
On Fri, Jul 9, 2010 at 7:06 AM, anatoly techtonik techto...@gmail.com wrote:
On Thu, Jul 8, 2010 at 10:52 PM, MRAB pyt...@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
anatoly techtonik wrote:
On Thu, Jul 8, 2010 at 10:52 PM, MRAB pyt...@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
On Fri, Jul 9, 2010 at 10:28 AM, MRAB pyt...@mrabarnett.plus.com wrote:
anatoly techtonik wrote:
On Thu, Jul 8, 2010 at 10:52 PM, MRAB pyt...@mrabarnett.plus.com wrote:
Hi all,
I re-implemented the re module, adding new features and speed
improvements. It's available at:
Collin Winter wrote:
On Fri, Jul 9, 2010 at 10:28 AM, MRAB pyt...@mrabarnett.plus.com wrote:
anatoly techtonik wrote:
On Thu, Jul 8, 2010 at 10:52 PM, MRAB pyt...@mrabarnett.plus.com wrote:
Hi all,
I re-implemented the re module, adding new features and speed
improvements. It's available at:
On Fri, Jul 9, 2010 at 3:35 PM, MRAB pyt...@mrabarnett.plus.com wrote:
I concentrated my efforts on the matching speed because regexes tend to
be compiled only once, and are cached anyway, so I don't think it's as
important.
I think most here will agree with that, but it might be good to keep
H as long as we aren't the ones writing the check:)
BJ
--Original Message--
From: Fred Drake fdr...@acm.org
Sent: Fri, July 09, 2010 1:16 PM
To: MRAB pyt...@mrabarnett.plus.com
Cc: Python-Dev python-dev@python.org
Subject: Re: [Python-Dev] New regex module for 3.2?
On Fri, Jul
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 Fri, Jul 9, 2010 at 5:52 AM, MRAB pyt...@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
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.
On Thu, 08 Jul 2010 20:52:44 +0100
MRAB pyt...@mrabarnett.plus.com wrote:
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.
Can you publish these benchmarks
Nick Coghlan wrote:
On Fri, Jul 9, 2010 at 5:52 AM, MRAB pyt...@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.
On Fri, Jul 9, 2010 at 7:54 AM, MRAB pyt...@mrabarnett.plus.com wrote:
You should be able to replace:
import re
with:
import regex as re
and still have everything work the same, ie it's backwards compatible
with re.
That's not what I'm asking. I'm asking what happens if you take
Nick Coghlan wrote:
On Fri, Jul 9, 2010 at 7:54 AM, MRAB pyt...@mrabarnett.plus.com wrote:
You should be able to replace:
import re
with:
import regex as re
and still have everything work the same, ie it's backwards compatible
with re.
That's not what I'm asking. I'm asking what
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