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Groups > comp.lang.python > #60898

Re: Python Unicode handling wins again -- mostly

From Ben Finney <ben+python@benfinney.id.au>
Subject Re: Python Unicode handling wins again -- mostly
Date 2013-12-03 09:56 +1100
References <529934dc$0$29993$c3e8da3$5496439d@news.astraweb.com> <529CEFB1.2030007@stoneleaf.us> <l7it6r$e6e$1@ger.gmane.org>
Newsgroups comp.lang.python
Message-ID <mailman.3490.1386025030.18130.python-list@python.org> (permalink)

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Ned Batchelder <ned@nedbatchelder.com> writes:

> This is where my knowledge about Unicode gets fuzzy.  Isn't it the
> case that some grapheme clusters (or whatever the right word is) can't
> be normalized down to a single code point?  Characters can accept many
> accents, for example.

That's true, but doesn't affect the point being made: that one can have
both “sequence of Unicode code points” in Python's ‘unicode’ (now ‘str’)
type, and also deal with “sequence of text the reader will see”.

> In that case, you can't always normalize and use the existing string
> methods, but would need more specialized code.

Specialised code may not be needed. It will at least be true that “any
two code-point sequences which normalise to the same value will be
visually the same for the reader”, which is an important assertion for
addressing the complaints from Mortoray's article.

-- 
 \       “Pray, v. To ask that the laws of the universe be annulled in |
  `\     behalf of a single petitioner confessedly unworthy.” —Ambrose |
_o__)                           Bierce, _The Devil's Dictionary_, 1906 |
Ben Finney

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Thread

Python Unicode handling wins again -- mostly Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-11-30 00:44 +0000
  Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-11-30 01:07 +0000
  Re: Python Unicode handling wins again -- mostly Roy Smith <roy@panix.com> - 2013-11-29 21:08 -0500
    Re: Python Unicode handling wins again -- mostly Chris Angelico <rosuav@gmail.com> - 2013-11-30 13:12 +1100
      Re: Python Unicode handling wins again -- mostly Roy Smith <roy@panix.com> - 2013-11-29 21:28 -0500
        Re: Python Unicode handling wins again -- mostly Dave Angel <davea@davea.name> - 2013-11-29 22:06 -0500
    Re: Python Unicode handling wins again -- mostly Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-11-30 04:21 +0000
      Re: Python Unicode handling wins again -- mostly Roy Smith <roy@panix.com> - 2013-11-29 23:30 -0500
      Re: Python Unicode handling wins again -- mostly Zero Piraeus <z@etiol.net> - 2013-11-30 02:05 -0300
        Re: Python Unicode handling wins again -- mostly Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-11-30 06:25 +0000
      Re: Python Unicode handling wins again -- mostly Gene Heskett <gheskett@wdtv.com> - 2013-11-30 00:25 -0500
      Re: Python Unicode handling wins again -- mostly Roy Smith <roy@panix.com> - 2013-11-30 00:37 -0500
        Re: Python Unicode handling wins again -- mostly Ian Kelly <ian.g.kelly@gmail.com> - 2013-11-29 23:00 -0700
          Re: Python Unicode handling wins again -- mostly Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-11-30 07:11 +0000
        Re: Python Unicode handling wins again -- mostly Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-11-30 07:41 +0000
          Re: Python Unicode handling wins again -- mostly Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2013-12-01 11:41 +1300
    Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-11-30 08:07 +0000
    Re: Python Unicode handling wins again -- mostly wxjmfauth@gmail.com - 2013-11-30 11:11 -0800
      Re: Python Unicode handling wins again -- mostly Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2013-12-01 11:37 +1300
        Re: Python Unicode handling wins again -- mostly Ned Batchelder <ned@nedbatchelder.com> - 2013-11-30 18:07 -0500
          Re: Python Unicode handling wins again -- mostly wxjmfauth@gmail.com - 2013-12-01 08:57 -0800
        Re: Python Unicode handling wins again -- mostly Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-01 00:22 +0000
          Re: Python Unicode handling wins again -- mostly Tim Chase <python.list@tim.thechases.com> - 2013-11-30 18:52 -0600
            Re: Python Unicode handling wins again -- mostly Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-01 00:54 +0000
              Re: Python Unicode handling wins again -- mostly Tim Chase <python.list@tim.thechases.com> - 2013-11-30 19:05 -0600
              Re: Python Unicode handling wins again -- mostly Chris Angelico <rosuav@gmail.com> - 2013-12-01 12:13 +1100
                Re: Python Unicode handling wins again -- mostly Roy Smith <roy@panix.com> - 2013-11-30 20:27 -0500
                Re: Python Unicode handling wins again -- mostly Chris Angelico <rosuav@gmail.com> - 2013-12-01 12:31 +1100
  Re: Python Unicode handling wins again -- mostly Serhiy Storchaka <storchaka@gmail.com> - 2013-12-01 20:00 +0200
    Re: Python Unicode handling wins again -- mostly wxjmfauth@gmail.com - 2013-12-01 12:15 -0800
      Re: Python Unicode handling wins again -- mostly Tim Delaney <timothy.c.delaney@gmail.com> - 2013-12-02 07:54 +1100
        Re: Python Unicode handling wins again -- mostly wxjmfauth@gmail.com - 2013-12-02 04:39 -0800
          Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-02 14:46 +0000
          Re: Python Unicode handling wins again -- mostly Ned Batchelder <ned@nedbatchelder.com> - 2013-12-02 10:22 -0500
          Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-02 15:45 +0000
          Re: Python Unicode handling wins again -- mostly Chris Angelico <rosuav@gmail.com> - 2013-12-03 02:49 +1100
          Re: Python Unicode handling wins again -- mostly Ned Batchelder <ned@nedbatchelder.com> - 2013-12-02 10:58 -0500
          Re: Python Unicode handling wins again -- mostly Terry Reedy <tjreedy@udel.edu> - 2013-12-02 15:26 -0500
          Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-02 20:45 +0000
          Re: Python Unicode handling wins again -- mostly Ned Batchelder <ned@nedbatchelder.com> - 2013-12-02 16:44 -0500
          Code of Conduct, Trolls, and Thankless Jobs  [was Re: Python Unicode handling wins again -- mostly] Ethan Furman <ethan@stoneleaf.us> - 2013-12-02 13:25 -0800
          Re: Code of Conduct, Trolls, and Thankless Jobs  [was Re: Python Unicode handling wins again -- mostly] Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-02 22:04 +0000
            Re: Code of Conduct, Trolls, and Thankless Jobs  [was Re: Python Unicode handling wins again -- mostly] Roy Smith <roy@panix.com> - 2013-12-02 20:38 -0500
              Pythonista Goals  [was Re: Code of Conduct, Trolls, and Thankless Jobs] Ethan Furman <ethan@stoneleaf.us> - 2013-12-02 17:56 -0800
              Re: Code of Conduct, Trolls, and Thankless Jobs  [was Re: Python Unicode handling wins again -- mostly] Grant Edwards <invalid@invalid.invalid> - 2013-12-03 04:32 +0000
                Re: Code of Conduct, Trolls, and Thankless Jobs  [was Re: Python Unicode handling wins again -- mostly] Steven D'Aprano <steve@pearwood.info> - 2013-12-03 05:41 +0000
                Re: Code of Conduct, Trolls, and Thankless Jobs  [was Re: Python Unicode handling wins again -- mostly] Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-03 12:14 +0000
              Re: Code of Conduct, Trolls, and Thankless Jobs [was Re: Python Unicode handling wins again -- mostly] Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-03 12:11 +0000
          Re: Code of Conduct, Trolls, and Thankless Jobs  [was Re: Python Unicode handling wins again -- mostly] Ned Batchelder <ned@nedbatchelder.com> - 2013-12-02 17:23 -0500
          Re: Python Unicode handling wins again -- mostly Ned Batchelder <ned@nedbatchelder.com> - 2013-12-02 17:24 -0500
          Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-02 22:32 +0000
          Re: Python Unicode handling wins again -- mostly Ned Batchelder <ned@nedbatchelder.com> - 2013-12-02 17:53 -0500
          Re: Code of Conduct, Trolls, and Thankless Jobs Ben Finney <ben+python@benfinney.id.au> - 2013-12-03 10:11 +1100
          Re: Python Unicode handling wins again -- mostly Ethan Furman <ethan@stoneleaf.us> - 2013-12-02 14:41 -0800
          Re: Code of Conduct, Trolls, and Thankless Jobs  [was Re: Python Unicode handling wins again -- mostly] Terry Reedy <tjreedy@udel.edu> - 2013-12-02 22:22 -0500
          Re: Code of Conduct, Trolls, and Thankless Jobs Terry Reedy <tjreedy@udel.edu> - 2013-12-02 22:39 -0500
          Re: Code of Conduct, Trolls, and Thankless Jobs  [was Re: Python Unicode handling wins again -- mostly] Ethan Furman <ethan@stoneleaf.us> - 2013-12-02 20:11 -0800
      Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-01 22:06 +0000
      Re: Python Unicode handling wins again -- mostly Tim Delaney <timothy.c.delaney@gmail.com> - 2013-12-02 09:29 +1100
      Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-01 23:10 +0000
      Re: Python Unicode handling wins again -- mostly Ethan Furman <ethan@stoneleaf.us> - 2013-12-01 14:50 -0800
      Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-02 00:43 +0000
  Re: Python Unicode handling wins again -- mostly Ethan Furman <ethan@stoneleaf.us> - 2013-12-02 12:38 -0800
  Re: Python Unicode handling wins again -- mostly Ned Batchelder <ned@nedbatchelder.com> - 2013-12-02 16:14 -0500
    Re: Python Unicode handling wins again -- mostly Steven D'Aprano <steve@pearwood.info> - 2013-12-03 05:06 +0000
      Re: Python Unicode handling wins again -- mostly joe <joeedh@gmail.com> - 2013-12-02 23:35 -0800
      Re: Python Unicode handling wins again -- mostly wxjmfauth@gmail.com - 2013-12-03 10:34 -0800
  Re: Python Unicode handling wins again -- mostly Chris Angelico <rosuav@gmail.com> - 2013-12-03 08:23 +1100
  Re: Python Unicode handling wins again -- mostly MRAB <python@mrabarnett.plus.com> - 2013-12-02 21:27 +0000
  Re: Python Unicode handling wins again -- mostly Ethan Furman <ethan@stoneleaf.us> - 2013-12-02 13:27 -0800
  Re: Python Unicode handling wins again -- mostly Ben Finney <ben+python@benfinney.id.au> - 2013-12-03 09:56 +1100
  Re: Python Unicode handling wins again -- mostly Neil Cerutti <neilc@norwich.edu> - 2013-12-03 13:47 +0000
  Re: Python Unicode handling wins again -- mostly Ethan Furman <ethan@stoneleaf.us> - 2013-12-03 06:26 -0800
    Re: Python Unicode handling wins again -- mostly wxjmfauth@gmail.com - 2013-12-04 05:52 -0800
      Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-04 14:07 +0000
      Re: Python Unicode handling wins again -- mostly Neil Cerutti <neilc@norwich.edu> - 2013-12-04 14:38 +0000

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