Re: psss...I want to move from Perl to Python

From	Terry Reedy <tjreedy@udel.edu>
Newsgroups	comp.lang.python
Subject	Re: psss...I want to move from Perl to Python
Date	2016-01-31 07:28 -0500
Message-ID	<mailman.163.1454243349.2338.python-list@python.org> (permalink)
References	(6 earlier) <be09f9d4-ff7c-4e10-8188-1451e4657475@googlegroups.com> <8d8e0774-0d25-443c-a466-6ab671bcaf3d@googlegroups.com> <dh4r6eFjbagU1@mid.individual.net> <56ad69e4$0$14486$c3e8da3@news.astraweb.com> <53d071aa-0f24-421b-8904-084071c4a8b2@googlegroups.com>

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On 1/30/2016 10:22 PM, Rustom Mody wrote:
> On Sunday, January 31, 2016 at 7:27:06 AM UTC+5:30, Steven D'Aprano wrote:
>> On Sunday 31 January 2016 09:18, Gregory Ewing wrote:

>> Correct. The re module keeps a cache of the last N regexes used, for some
>> value of N (possibly 10?) so for casual use there's no real point to pre-
>> compiling other than fussiness.
>>
>> But if you have an application that makes heavy-duty use of regexes, e.g.
>> some sort of parser with dozens of distinct regexes, you might not want to
>> rely on the cache.

>>>> import re
>>>> re._MAXCACHE
> 512
>>>>
>
> Have you ever seen a program that uses 512 re's?
> I havent :-)

I do not know if the cache was always there.  It used to be smaller, 
maybe 100, then 200.

-- 
Terry Jan Reedy

Thread

psss...I want to move from Perl to Python Fillmore <fillmore_remove@hotmail.com> - 2016-01-28 19:01 -0500
  Re: psss...I want to move from Perl to Python paul.hermeneutic@gmail.com - 2016-01-28 17:22 -0700
  Re: psss...I want to move from Perl to Python Nathan Hilterbrand <nhilterbrand@gmail.com> - 2016-01-28 19:21 -0500
    Re: psss...I want to move from Perl to Python Rick Johnson <rantingrickjohnson@gmail.com> - 2016-01-28 19:23 -0800
      Re: psss...I want to move from Perl to Python Chris Angelico <rosuav@gmail.com> - 2016-01-29 14:26 +1100
    Re: psss...I want to move from Perl to Python wxjmfauth@gmail.com - 2016-01-30 02:26 -0800
      Re: psss...I want to move from Perl to Python Fillmore <fillmore_remove@hotmail.com> - 2016-01-31 17:34 -0500
        Re: psss...I want to move from Perl to Python Michael Torrie <torriem@gmail.com> - 2016-01-31 16:45 -0700
        Re: psss...I want to move from Perl to Python Chris Angelico <rosuav@gmail.com> - 2016-02-01 10:48 +1100
        Re: psss...I want to move from Perl to Python Terry Reedy <tjreedy@udel.edu> - 2016-01-31 18:51 -0500
          Re: psss...I want to move from Perl to Python Rustom Mody <rustompmody@gmail.com> - 2016-01-31 18:59 -0800
            Re: psss...I want to move from Perl to Python Chris Angelico <rosuav@gmail.com> - 2016-02-01 14:15 +1100
              Re: psss...I want to move from Perl to Python Rustom Mody <rustompmody@gmail.com> - 2016-01-31 19:43 -0800
              Re: psss...I want to move from Perl to Python Rick Johnson <rantingrickjohnson@gmail.com> - 2016-02-02 14:53 -0800
  Re: psss...I want to move from Perl to Python Chris Angelico <rosuav@gmail.com> - 2016-01-29 11:25 +1100
    Re: psss...I want to move from Perl to Python Steven D'Aprano <steve@pearwood.info> - 2016-01-29 18:12 +1100
      Re: psss...I want to move from Perl to Python Chris Angelico <rosuav@gmail.com> - 2016-01-29 18:19 +1100
      Re: psss...I want to move from Perl to Python Ulli Horlacher <framstag@rus.uni-stuttgart.de> - 2016-01-29 09:12 +0000
        Re: psss...I want to move from Perl to Python James Harris <james.harris.1@gmail.com> - 2016-01-29 11:03 +0000
          Re: psss...I want to move from Perl to Python Ulli Horlacher <framstag@rus.uni-stuttgart.de> - 2016-01-29 12:21 +0000
            Re: psss...I want to move from Perl to Python Steven D'Aprano <steve@pearwood.info> - 2016-01-30 00:46 +1100
              Re: psss...I want to move from Perl to Python Ben Finney <ben+python@benfinney.id.au> - 2016-01-30 09:47 +1100
                Re: psss...I want to move from Perl to Python Steven D'Aprano <steve@pearwood.info> - 2016-01-30 22:12 +1100
            Re: psss...I want to move from Perl to Python Rick Johnson <rantingrickjohnson@gmail.com> - 2016-01-29 13:30 -0800
              Re: psss...I want to move from Perl to Python Fillmore <fillmore_remove@hotmail.com> - 2016-01-29 19:57 -0500
                Re: psss...I want to move from Perl to Python Ben Finney <ben+python@benfinney.id.au> - 2016-01-30 12:04 +1100
              Re: psss...I want to move from Perl to Python Rustom Mody <rustompmody@gmail.com> - 2016-01-29 19:38 -0800
                Re: psss...I want to move from Perl to Python Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2016-01-31 11:18 +1300
                Re: psss...I want to move from Perl to Python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2016-01-31 12:56 +1100
                Re: psss...I want to move from Perl to Python Rustom Mody <rustompmody@gmail.com> - 2016-01-30 19:22 -0800
                Re: psss...I want to move from Perl to Python Cameron Simpson <cs@zip.com.au> - 2016-01-31 14:48 +1100
                Re: psss...I want to move from Perl to Python Rustom Mody <rustompmody@gmail.com> - 2016-01-30 19:53 -0800
                Re: psss...I want to move from Perl to Python Cameron Simpson <cs@zip.com.au> - 2016-01-31 20:56 +1100
                Re: psss...I want to move from Perl to Python Paul Rubin <no.email@nospam.invalid> - 2016-01-31 09:45 -0800
                Re: psss...I want to move from Perl to Python Rustom Mody <rustompmody@gmail.com> - 2016-01-31 18:08 -0800
                Re: psss...I want to move from Perl to Python Steven D'Aprano <steve@pearwood.info> - 2016-01-31 20:23 +1100
                Re: psss...I want to move from Perl to Python Cameron Simpson <cs@zip.com.au> - 2016-01-31 20:53 +1100
                Re: psss...I want to move from Perl to Python Paul Rubin <no.email@nospam.invalid> - 2016-01-31 09:49 -0800
                Re: psss...I want to move from Perl to Python Cameron Simpson <cs@zip.com.au> - 2016-02-01 08:16 +1100
                Re: psss...I want to move from Perl to Python Terry Reedy <tjreedy@udel.edu> - 2016-01-31 07:28 -0500
                Re: psss...I want to move from Perl to Python Rustom Mody <rustompmody@gmail.com> - 2016-01-31 05:12 -0800
                Re: psss...I want to move from Perl to Python Rick Johnson <rantingrickjohnson@gmail.com> - 2016-01-30 14:25 -0800
              Re: psss...I want to move from Perl to Python Rustom Mody <rustompmody@gmail.com> - 2016-01-29 20:04 -0800
        Re: psss...I want to move from Perl to Python Random832 <random832@fastmail.com> - 2016-01-29 10:07 -0500
          Re: psss...I want to move from Perl to Python Fillmore <fillmore_remove@hotmail.com> - 2016-01-29 12:56 -0500
          Re: psss...I want to move from Perl to Python Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2016-01-30 11:21 +1300
        Re: psss...I want to move from Perl to Python sohcahtoa82@gmail.com - 2016-01-29 12:49 -0800
          Re: psss...I want to move from Perl to Python Rick Johnson <rantingrickjohnson@gmail.com> - 2016-01-29 14:29 -0800
      Re: psss...I want to move from Perl to Python Cameron Simpson <cs@zip.com.au> - 2016-01-30 10:48 +1100
  Re: psss...I want to move from Perl to Python Cameron Simpson <cs@zip.com.au> - 2016-01-29 12:20 +1100
  Re: psss...I want to move from Perl to Python Paul Rubin <no.email@nospam.invalid> - 2016-01-28 18:06 -0800
    Re: psss...I want to move from Perl to Python Chris Angelico <rosuav@gmail.com> - 2016-01-29 13:34 +1100
      Re: psss...I want to move from Perl to Python sohcahtoa82@gmail.com - 2016-01-29 12:41 -0800
        Re: psss...I want to move from Perl to Python Chris Angelico <rosuav@gmail.com> - 2016-01-30 07:54 +1100
        Re: psss...I want to move from Perl to Python Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2016-01-30 11:27 +1300
    Re: psss...I want to move from Perl to Python Michael Torrie <torriem@gmail.com> - 2016-01-28 21:42 -0700
    Re: psss...I want to move from Perl to Python Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2016-01-29 08:54 -0500
  Re: psss...I want to move from Perl to Python Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-01-29 08:24 +0200
  Re: psss...I want to move from Perl to Python Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2016-01-29 08:50 -0500
  Re: psss...I want to move from Perl to Python Fillmore <fillmore_remove@hotmail.com> - 2016-01-29 12:04 -0500
  Re: psss...I want to move from Perl to Python "Sven R. Kunze" <srkunze@mail.de> - 2016-01-29 18:39 +0100
  Re: psss...I want to move from Perl to Python Fillmore <fillmore_remove@hotmail.com> - 2016-01-29 15:42 -0500
    Re: psss...I want to move from Perl to Python Chris Angelico <rosuav@gmail.com> - 2016-01-30 07:51 +1100
    Re: psss...I want to move from Perl to Python Nathan Hilterbrand <nhilterbrand@gmail.com> - 2016-01-29 16:38 -0500
    Re: psss...I want to move from Perl to Python Cody Piersall <cody.piersall@gmail.com> - 2016-01-29 15:50 -0600
      Re: psss...I want to move from Perl to Python Josef Pktd <josef.pktd@gmail.com> - 2016-01-29 16:48 -0800
    Re: psss...I want to move from Perl to Python Terry Reedy <tjreedy@udel.edu> - 2016-01-29 22:08 -0500
    Re: psss...I want to move from Perl to Python Chris Angelico <rosuav@gmail.com> - 2016-01-30 14:12 +1100
  Re: psss...I want to move from Perl to Python Ben Finney <ben+python@benfinney.id.au> - 2016-01-30 09:49 +1100
  Re: psss...I want to move from Perl to Python Larry Hudson <orgnut@yahoo.com> - 2016-01-29 22:22 -0800
  Re: psss...I want to move from Perl to Python "Sven R. Kunze" <srkunze@mail.de> - 2016-01-30 13:43 +0100
  Re: psss...I want to move from Perl to Python <paul.hermeneutic@gmail.com> - 2016-02-02 10:00 -0700
  Re: psss...I want to move from Perl to Python "Martin A. Brown" <martin@linux-ip.net> - 2016-02-02 13:04 -0800
  Re: psss...I want to move from Perl to Python Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2016-02-02 19:36 -0500

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