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Groups > comp.lang.python > #20320
| From | Roy Smith <roy@panix.com> |
|---|---|
| Newsgroups | comp.lang.python |
| Subject | Re: Python usage numbers |
| Date | 2012-02-12 20:11 -0500 |
| Organization | PANIX Public Access Internet and UNIX, NYC |
| Message-ID | <roy-F2E8F4.20110312022012@news.panix.com> (permalink) |
| References | (9 earlier) <mailman.5739.1329084873.27778.python-list@python.org> <roy-E2270B.17273412022012@news.panix.com> <4f384b6e$0$29986$c3e8da3$5496439d@news.astraweb.com> <4F38536A.2030208@davea.name> <mailman.5750.1329094801.27778.python-list@python.org> |
In article <mailman.5750.1329094801.27778.python-list@python.org>, Chris Angelico <rosuav@gmail.com> wrote: > The advantage, though, is that you can always know how many bytes to > read for X characters. In ASCII, you allocate 80 bytes of storage and > you can store 80 characters. In UTF-8, if you want an 80-character > buffer, you can probably get away with allocating 240 characters... > but maybe not. In UTF-32, it's easy - just allocate 320 bytes and you > know you can store them. Also, you know exactly where the 17th > character is; in UTF-8, you have to count. That's a huge advantage for > in-memory strings; but is it useful on disk, where (as likely as not) > you're actually looking for lines, which you still have to scan for? > I'm thinking not, so it makes sense to use a smaller disk image than > UTF-32 - less total bytes means less sectors to read/write, which > translates fairly directly into performance. You might just write files compressed. My guess is that a typical gzipped UTF-32 text file will be smaller than the same data stored as uncompressed UTF-8.
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Re: Python usage numbers Chris Angelico <rosuav@gmail.com> - 2012-02-12 12:28 +1100
Re: Python usage numbers Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-12 02:23 +0000
Re: Python usage numbers Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-11 18:36 -0800
Re: Python usage numbers Chris Angelico <rosuav@gmail.com> - 2012-02-12 15:38 +1100
Re: Python usage numbers Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-12 05:51 +0000
Re: Python usage numbers Chris Angelico <rosuav@gmail.com> - 2012-02-12 17:08 +1100
Re: Python usage numbers Roy Smith <roy@panix.com> - 2012-02-12 10:48 -0500
Re: Python usage numbers Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-02-12 11:47 -0500
Re: Python usage numbers Roy Smith <roy@panix.com> - 2012-02-12 12:11 -0500
Re: Python usage numbers Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-12 22:49 +0000
Re: Python usage numbers Dan Sommers <dan@tombstonezero.net> - 2012-02-12 15:55 +0000
Re: Python usage numbers rusi <rustompmody@gmail.com> - 2012-02-12 08:50 -0800
Re: Python usage numbers Roy Smith <roy@panix.com> - 2012-02-12 12:21 -0500
Re: Python usage numbers Nick Dokos <nicholas.dokos@hp.com> - 2012-02-12 12:36 -0500
entering unicode (was Python usage numbers) rusi <rustompmody@gmail.com> - 2012-02-12 19:09 -0800
Re: entering unicode (was Python usage numbers) Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-19 03:44 +0000
Re: entering unicode (was Python usage numbers) rusi <rustompmody@gmail.com> - 2012-02-19 00:52 -0800
How do you Unicode proponents type your non-ASCII characters? (was: Python usage numbers) Ben Finney <ben+python@benfinney.id.au> - 2012-02-13 09:43 +1100
Re: Python usage numbers Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-12 22:56 +0000
Re: Python usage numbers Roy Smith <roy@panix.com> - 2012-02-12 10:13 -0500
Re: Python usage numbers Terry Reedy <tjreedy@udel.edu> - 2012-02-12 17:07 -0500
Re: Python usage numbers Roy Smith <roy@panix.com> - 2012-02-12 17:22 -0500
Re: Python usage numbers Chris Angelico <rosuav@gmail.com> - 2012-02-13 09:14 +1100
Re: Python usage numbers Roy Smith <roy@panix.com> - 2012-02-12 17:27 -0500
Re: Python usage numbers Dave Angel <davea@dejaviewphoto.com> - 2012-02-12 17:40 -0500
Re: Python usage numbers Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-12 23:29 +0000
Re: Python usage numbers Roy Smith <roy@panix.com> - 2012-02-12 18:41 -0500
Re: Python usage numbers Dave Angel <d@davea.name> - 2012-02-12 19:03 -0500
Re: Python usage numbers Chris Angelico <rosuav@gmail.com> - 2012-02-13 11:59 +1100
Re: Python usage numbers Roy Smith <roy@panix.com> - 2012-02-12 20:11 -0500
Re: Python usage numbers Christian Heimes <lists@cheimes.de> - 2012-02-13 01:00 +0100
Re: Python usage numbers Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-02-12 21:37 -0500
Re: Python usage numbers Terry Reedy <tjreedy@udel.edu> - 2012-02-12 22:09 -0500
Re: Python usage numbers Roy Smith <roy@panix.com> - 2012-02-12 22:57 -0500
Re: Python usage numbers Ben Finney <ben+python@benfinney.id.au> - 2012-02-13 15:19 +1100
Re: Python usage numbers Andrew Berg <bahamutzero8825@gmail.com> - 2012-02-13 12:26 -0600
Re: Python usage numbers jmfauth <wxjmfauth@gmail.com> - 2012-02-14 00:00 -0800
Re: Python usage numbers Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-12 06:10 +0000
Re: Python usage numbers Andrew Berg <bahamutzero8825@gmail.com> - 2012-02-12 01:05 -0600
Re: Python usage numbers Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-12 09:12 +0000
Re: Python usage numbers Andrew Berg <bahamutzero8825@gmail.com> - 2012-02-12 05:11 -0600
Re: Python usage numbers Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-12 22:30 +0000
Re: Python usage numbers Dave Angel <d@davea.name> - 2012-02-12 17:50 -0500
Re: Python usage numbers Peter Pearson <ppearson@nowhere.invalid> - 2012-02-12 17:58 +0000
Re: Python usage numbers Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-12 20:48 -0800
Re: Python usage numbers Chris Angelico <rosuav@gmail.com> - 2012-02-13 16:03 +1100
OT: Entitlements [was Re: Python usage numbers] Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-13 08:05 +0000
Re: OT: Entitlements [was Re: Python usage numbers] Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-13 08:01 -0800
Re: OT: Entitlements [was Re: Python usage numbers] Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-13 16:12 +0000
Re: OT: Entitlements [was Re: Python usage numbers] Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-13 08:27 -0800
Re: OT: Entitlements [was Re: Python usage numbers] Ian Kelly <ian.g.kelly@gmail.com> - 2012-02-13 11:38 -0700
Re: OT: Entitlements [was Re: Python usage numbers] Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-13 13:01 -0800
Re: OT: Entitlements [was Re: Python usage numbers] Chris Angelico <rosuav@gmail.com> - 2012-02-14 08:27 +1100
Re: OT: Entitlements [was Re: Python usage numbers] Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-02-13 21:46 +0000
Re: OT: Entitlements [was Re: Python usage numbers] Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-14 00:19 +0000
Re: OT: Entitlements [was Re: Python usage numbers] Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-13 17:07 -0800
Re: OT: Entitlements [was Re: Python usage numbers] Ian Kelly <ian.g.kelly@gmail.com> - 2012-02-13 18:29 -0700
Re: OT: Entitlements [was Re: Python usage numbers] Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-17 17:13 -0800
Re: OT: Entitlements [was Re: Python usage numbers] Chris Angelico <rosuav@gmail.com> - 2012-02-18 13:13 +1100
Re: OT: Entitlements [was Re: Python usage numbers] Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-02-18 02:39 +0000
Re: OT: Entitlements [was Re: Python usage numbers] Ian Kelly <ian.g.kelly@gmail.com> - 2012-02-18 00:28 -0700
Re: OT: Entitlements [was Re: Python usage numbers] Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-18 07:02 -0800
Re: OT: Entitlements [was Re: Python usage numbers] Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-02-18 16:15 +0000
Re: OT: Entitlements [was Re: Python usage numbers] Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-18 10:34 -0800
Re: OT: Entitlements [was Re: Python usage numbers] random joe <pywin32@gmail.com> - 2012-02-18 10:49 -0800
Re: OT: Entitlements [was Re: Python usage numbers] Albert van der Horst <albert@spenarnc.xs4all.nl> - 2012-02-26 12:14 +0000
Re: OT: Entitlements [was Re: Python usage numbers] Terry Reedy <tjreedy@udel.edu> - 2012-02-18 04:16 -0500
Re: OT: Entitlements [was Re: Python usage numbers] John O'Hagan <research@johnohagan.com> - 2012-02-14 19:41 +1100
Re: OT: Entitlements [was Re: Python usage numbers] Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-14 16:21 -0800
Re: OT: Entitlements [was Re: Python usage numbers] Chris Angelico <rosuav@gmail.com> - 2012-02-15 11:44 +1100
Re: OT: Entitlements [was Re: Python usage numbers] Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-14 17:26 -0800
Re: OT: Entitlements [was Re: Python usage numbers] John O'Hagan <research@johnohagan.com> - 2012-02-15 19:56 +1100
Re: OT: Entitlements [was Re: Python usage numbers] Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-15 07:04 -0800
Re: OT: Entitlements [was Re: Python usage numbers] Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-02-15 15:18 +0000
Re: OT: Entitlements [was Re: Python usage numbers] Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-15 08:27 -0800
Re: OT: Entitlements [was Re: Python usage numbers] Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-02-15 17:16 +0000
Re: OT: Entitlements [was Re: Python usage numbers] Ian Kelly <ian.g.kelly@gmail.com> - 2012-02-15 09:46 -0700
Re: OT: Entitlements [was Re: Python usage numbers] Albert van der Horst <albert@spenarnc.xs4all.nl> - 2012-02-26 12:44 +0000
Re: OT: Entitlements [was Re: Python usage numbers] Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-26 12:35 -0800
Re: OT: Entitlements [was Re: Python usage numbers] Chris Angelico <rosuav@gmail.com> - 2012-02-27 07:50 +1100
Re: OT: Entitlements [was Re: Python usage numbers] Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-26 14:32 -0800
Re: OT: Entitlements Ben Finney <ben+python@benfinney.id.au> - 2012-02-27 07:46 +1100
Re: OT: Entitlements [was Re: Python usage numbers] Chris Angelico <rosuav@gmail.com> - 2012-02-14 07:47 +1100
Re: OT: Entitlements [was Re: Python usage numbers] Michael Torrie <torriem@gmail.com> - 2012-02-13 14:46 -0700
Re: OT: Entitlements [was Re: Python usage numbers] Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-13 16:39 -0800
Re: OT: Entitlements [was Re: Python usage numbers] Michael Torrie <torriem@gmail.com> - 2012-02-13 18:36 -0700
Re: OT: Entitlements [was Re: Python usage numbers] Chris Angelico <rosuav@gmail.com> - 2012-02-14 12:37 +1100
Re: OT: Entitlements [was Re: Python usage numbers] Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-17 17:37 -0800
Re: OT: Entitlements [was Re: Python usage numbers] Tim Wintle <tim.wintle@teamrubber.com> - 2012-02-13 16:41 +0000
Re: OT: Entitlements [was Re: Python usage numbers] Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-14 16:40 -0800
RE: OT: Entitlements [was Re: Python usage numbers] "Prasad, Ramit" <ramit.prasad@jpmorgan.com> - 2012-02-17 20:09 +0000
Re: OT: Entitlements [was Re: Python usage numbers] Duncan Booth <duncan.booth@invalid.invalid> - 2012-02-14 11:31 +0000
Re: OT: Entitlements [was Re: Python usage numbers] Devin Jeanpierre <jeanpierreda@gmail.com> - 2012-02-14 07:06 -0500
Re: OT: Entitlements [was Re: Python usage numbers] Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-14 16:48 -0800
Re: OT: Entitlements [was Re: Python usage numbers] Chris Angelico <rosuav@gmail.com> - 2012-02-15 12:32 +1100
Re: OT: Entitlements [was Re: Python usage numbers] Duncan Booth <duncan.booth@invalid.invalid> - 2012-02-15 09:47 +0000
Re: OT: Entitlements [was Re: Python usage numbers] Arnaud Delobelle <arnodel@gmail.com> - 2012-02-15 09:58 +0000
Re: OT: Entitlements [was Re: Python usage numbers] Duncan Booth <duncan.booth@invalid.invalid> - 2012-02-15 10:04 +0000
Kill files [was Re: OT: Entitlements [was Re: Python usage numbers]] Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-15 10:27 +0000
Re: Kill files [was Re: OT: Entitlements [was Re: Python usage numbers]] Ethan Furman <ethan@stoneleaf.us> - 2012-02-15 11:29 -0800
Re: OT: Entitlements [was Re: Python usage numbers] rusi <rustompmody@gmail.com> - 2012-02-14 04:56 -0800
Re: OT: Entitlements [was Re: Python usage numbers] Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-02-14 09:37 -0500
Re: Python usage numbers Matej Cepl <mcepl@redhat.com> - 2012-02-12 09:14 +0100
Re: Python usage numbers Matej Cepl <mcepl@redhat.com> - 2012-02-12 09:26 +0100
Re: Python usage numbers Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-02-12 12:11 +0000
Re: Python usage numbers alister <alister.ware@ntlworld.com> - 2012-02-12 18:55 +0000
Re: Python usage numbers jmfauth <wxjmfauth@gmail.com> - 2012-02-12 11:52 -0800
French and IDLE on Windows (was Re: Python usage numbers) Terry Reedy <tjreedy@udel.edu> - 2012-02-12 18:30 -0500
Re: Python usage numbers Anssi Saari <as@sci.fi> - 2012-02-15 11:56 +0200
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