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Re: How do I display unicode value stored in a string variable using ord()

From Paul Rubin <no.email@nospam.invalid>
Newsgroups comp.lang.python
Subject Re: How do I display unicode value stored in a string variable using ord()
References (4 earlier) <mailman.3477.1345337181.4697.python-list@python.org> <7xfw7j3a1x.fsf@ruckus.brouhaha.com> <mailman.3479.1345342743.4697.python-list@python.org> <7xtxvzehhb.fsf@ruckus.brouhaha.com> <50309d69$0$29978$c3e8da3$5496439d@news.astraweb.com>
Date 2012-08-19 01:11 -0700
Message-ID <7x4nnzmhbn.fsf@ruckus.brouhaha.com> (permalink)
Organization Nightsong/Fort GNOX

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Steven D'Aprano <steve+comp.lang.python@pearwood.info> writes:
>     result = text[end:]

if end not near the end of the original string, then this is O(N)
even with fixed-width representation, because of the char copying.

if it is near the end, by knowing where the string data area
ends, I think it should be possible to scan backwards from
the end, recognizing what bytes can be the beginning of code points and
counting off the appropriate number.  This is O(1) if "near the end"
means "within a constant".

> You could say "Screw the full Unicode standard, who needs more than 64K 

No if you're claiming the language supports unicode it should be
the whole standard.

> You could do what Python 3.2 narrow builds do: use UTF-16 and leave it
> up to the individual programmer to track character boundaries,

I'm surprised the Python 3 implementers even considered that approach
much less went ahead with it.  It's obviously wrong.

> You could add a whole lot more heavyweight infrastructure to strings,
> turn them into suped-up ropes-on-steroids.

I'm not persuaded that PEP 393 isn't even worse.

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Thread

How do I display unicode value stored in a string variable using ord() Charles Jensen <hopefullycharles@gmail.com> - 2012-08-16 15:09 -0700
  Re: How do I display unicode value stored in a string variable using ord() Chris Angelico <rosuav@gmail.com> - 2012-08-17 08:20 +1000
  Re: How do I display unicode value stored in a string variable using ord() Dave Angel <d@davea.name> - 2012-08-16 18:47 -0400
  Re: How do I display unicode value stored in a string variable using ord() Terry Reedy <tjreedy@udel.edu> - 2012-08-16 19:59 -0400
    Re: How do I display unicode value stored in a string variable using ord() wxjmfauth@gmail.com - 2012-08-17 10:49 -0700
      Re: How do I display unicode value stored in a string variable using ord() Jerry Hill <malaclypse2@gmail.com> - 2012-08-17 14:21 -0400
        Re: How do I display unicode value stored in a string variable using ord() wxjmfauth@gmail.com - 2012-08-17 11:45 -0700
        Re: How do I display unicode value stored in a string variable using ord() wxjmfauth@gmail.com - 2012-08-17 11:45 -0700
          Re: How do I display unicode value stored in a string variable using ord() Dave Angel <d@davea.name> - 2012-08-17 16:55 -0400
          Re: How do I display unicode value stored in a string variable using ord() Dave Angel <d@davea.name> - 2012-08-17 23:30 -0400
            Re: How do I display unicode value stored in a string variable using ord() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-18 04:10 +0000
              Re: How do I display unicode value stored in a string variable using ord() Ian Kelly <ian.g.kelly@gmail.com> - 2012-08-18 09:18 -0600
          Re: How do I display unicode value stored in a string variable using ord() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-18 03:59 +0000
    Re: How do I display unicode value stored in a string variable using ord() wxjmfauth@gmail.com - 2012-08-17 10:49 -0700
  Re: How do I display unicode value stored in a string variable using ord() Alister <alister.ware@ntlworld.com> - 2012-08-17 06:30 +0000
  Re: How do I display unicode value stored in a string variable using ord() wxjmfauth@gmail.com - 2012-08-18 01:09 -0700
    Re: How do I display unicode value stored in a string variable using ord() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-18 12:27 +0000
      Re: How do I display unicode value stored in a string variable using ord() wxjmfauth@gmail.com - 2012-08-18 08:07 -0700
        Re: How do I display unicode value stored in a string variable using ord() Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-18 16:25 +0100
        Re: How do I display unicode value stored in a string variable using ord() Chris Angelico <rosuav@gmail.com> - 2012-08-19 01:36 +1000
        Re: How do I display unicode value stored in a string variable using ord() Ian Kelly <ian.g.kelly@gmail.com> - 2012-08-18 09:51 -0600
          Re: How do I display unicode value stored in a string variable using ord() wxjmfauth@gmail.com - 2012-08-18 09:38 -0700
            Re: How do I display unicode value stored in a string variable using ord() Chris Angelico <rosuav@gmail.com> - 2012-08-19 02:57 +1000
            Re: How do I display unicode value stored in a string variable using ord() Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-18 18:28 +0100
              Re: How do I display unicode value stored in a string variable using ord() wxjmfauth@gmail.com - 2012-08-18 11:05 -0700
                Re: How do I display unicode value stored in a string variable using ord() MRAB <python@mrabarnett.plus.com> - 2012-08-18 19:34 +0100
                Re: How do I display unicode value stored in a string variable using ord() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-19 06:35 +0000
                New internal string format in 3.3, was Re: How do I display unicode value stored in a string variable using ord() Peter Otten <__peter__@web.de> - 2012-08-19 09:43 +0200
                Re: New internal string format in 3.3, was Re: How do I display unicode value stored in a string variable using ord() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-19 08:56 +0000
                Re: New internal string format in 3.3, was Re: How do I display unicode value stored in a string variable using ord() wxjmfauth@gmail.com - 2012-08-19 02:24 -0700
                Re: New internal string format in 3.3 Peter Otten <__peter__@web.de> - 2012-08-19 11:37 +0200
                Re: New internal string format in 3.3 wxjmfauth@gmail.com - 2012-08-19 03:19 -0700
                Re: New internal string format in 3.3 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-19 13:33 +0000
                Re: New internal string format in 3.3 wxjmfauth@gmail.com - 2012-08-19 03:19 -0700
                Re: New internal string format in 3.3 Chris Angelico <rosuav@gmail.com> - 2012-08-19 20:26 +1000
                Re: New internal string format in 3.3 wxjmfauth@gmail.com - 2012-08-19 05:14 -0700
                Re: New internal string format in 3.3 Dave Angel <d@davea.name> - 2012-08-19 08:29 -0400
                Re: New internal string format in 3.3 wxjmfauth@gmail.com - 2012-08-19 05:59 -0700
                Re: New internal string format in 3.3 Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-19 14:46 +0100
                Re: New internal string format in 3.3 wxjmfauth@gmail.com - 2012-08-19 07:09 -0700
                Re: New internal string format in 3.3 wxjmfauth@gmail.com - 2012-08-19 07:09 -0700
                Re: New internal string format in 3.3 Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-19 15:48 +0100
                Re: New internal string format in 3.3 wxjmfauth@gmail.com - 2012-08-19 09:19 -0700
                Re: New internal string format in 3.3 wxjmfauth@gmail.com - 2012-08-19 09:19 -0700
                Re: New internal string format in 3.3 Terry Reedy <tjreedy@udel.edu> - 2012-08-19 13:48 -0400
                Re: New internal string format in 3.3 wxjmfauth@gmail.com - 2012-08-19 10:51 -0700
                Re: New internal string format in 3.3 Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-19 19:09 +0100
                Re: New internal string format in 3.3 Chris Angelico <rosuav@gmail.com> - 2012-08-20 07:50 +1000
                Re: New internal string format in 3.3 Michael Torrie <torriem@gmail.com> - 2012-08-19 23:38 -0600
                Re: New internal string format in 3.3 Roy Smith <roy@panix.com> - 2012-08-20 09:17 -0400
                Re: New internal string format in 3.3 Michael Torrie <torriem@gmail.com> - 2012-08-20 22:18 -0600
                Re: New internal string format in 3.3 Roy Smith <roy@panix.com> - 2012-08-21 07:48 -0400
                Re: New internal string format in 3.3 wxjmfauth@gmail.com - 2012-08-19 10:51 -0700
                Re: New internal string format in 3.3 Terry Reedy <tjreedy@udel.edu> - 2012-08-19 13:56 -0400
                Re: New internal string format in 3.3 wxjmfauth@gmail.com - 2012-08-19 05:59 -0700
                Re: New internal string format in 3.3 Dave Angel <d@davea.name> - 2012-08-19 08:35 -0400
                Re: New internal string format in 3.3 wxjmfauth@gmail.com - 2012-08-19 05:14 -0700
                Re: How do I display unicode value stored in a string variable using ord() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-19 06:30 +0000
              Re: How do I display unicode value stored in a string variable using ord() wxjmfauth@gmail.com - 2012-08-18 11:05 -0700
            Re: How do I display unicode value stored in a string variable using ord() Terry Reedy <tjreedy@udel.edu> - 2012-08-18 16:09 -0400
            Re: How do I display unicode value stored in a string variable using ord() Terry Reedy <tjreedy@udel.edu> - 2012-08-18 23:12 -0400
          Re: How do I display unicode value stored in a string variable using ord() wxjmfauth@gmail.com - 2012-08-18 09:38 -0700
          Re: How do I display unicode value stored in a string variable using ord() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-19 06:33 +0000
            Re: How do I display unicode value stored in a string variable using ord() Ian Kelly <ian.g.kelly@gmail.com> - 2012-08-19 11:50 -0600
              Re: How do I display unicode value stored in a string variable using ord() Paul Rubin <no.email@nospam.invalid> - 2012-08-19 11:20 -0700
                Re: How do I display unicode value stored in a string variable using ord() Ian Kelly <ian.g.kelly@gmail.com> - 2012-08-19 12:31 -0600
                Re: How do I display unicode value stored in a string variable using ord() Paul Rubin <no.email@nospam.invalid> - 2012-08-19 12:23 -0700
              Re: How do I display unicode value stored in a string variable using ord() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-19 20:16 +0000
            Re: How do I display unicode value stored in a string variable using ord() Ian Kelly <ian.g.kelly@gmail.com> - 2012-08-19 12:46 -0600
        Re: How do I display unicode value stored in a string variable using ord() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-18 17:59 +0000
          Re: How do I display unicode value stored in a string variable using ord() wxjmfauth@gmail.com - 2012-08-18 11:30 -0700
            Re: How do I display unicode value stored in a string variable using ord() Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-18 20:45 +0100
            Re: How do I display unicode value stored in a string variable using ord() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-19 06:13 +0000
          Re: How do I display unicode value stored in a string variable using ord() rusi <rustompmody@gmail.com> - 2012-08-18 11:40 -0700
            Re: How do I display unicode value stored in a string variable using ord() Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-18 20:50 +0100
            Re: How do I display unicode value stored in a string variable using ord() wxjmfauth@gmail.com - 2012-08-18 13:22 -0700
              Re: How do I display unicode value stored in a string variable using ord() Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-18 22:37 +0100
      Re: How do I display unicode value stored in a string variable using ord() Paul Rubin <no.email@nospam.invalid> - 2012-08-18 11:26 -0700
        Re: How do I display unicode value stored in a string variable using ord() MRAB <python@mrabarnett.plus.com> - 2012-08-18 19:59 +0100
          Re: How do I display unicode value stored in a string variable using ord() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-19 07:17 +0000
        Re: How do I display unicode value stored in a string variable using ord() Chris Angelico <rosuav@gmail.com> - 2012-08-19 10:46 +1000
          Re: How do I display unicode value stored in a string variable using ord() Paul Rubin <no.email@nospam.invalid> - 2012-08-18 19:11 -0700
            Re: How do I display unicode value stored in a string variable using ord() Chris Angelico <rosuav@gmail.com> - 2012-08-19 12:19 +1000
              Re: How do I display unicode value stored in a string variable using ord() Paul Rubin <no.email@nospam.invalid> - 2012-08-18 19:35 -0700
                Re: How do I display unicode value stored in a string variable using ord() Chris Angelico <rosuav@gmail.com> - 2012-08-19 13:01 +1000
                Re: How do I display unicode value stored in a string variable using ord() Paul Rubin <no.email@nospam.invalid> - 2012-08-18 20:10 -0700
                Re: How do I display unicode value stored in a string variable using ord() Chris Angelico <rosuav@gmail.com> - 2012-08-19 13:31 +1000
                Re: How do I display unicode value stored in a string variable using ord() Paul Rubin <no.email@nospam.invalid> - 2012-08-18 22:58 -0700
                Re: How do I display unicode value stored in a string variable using ord() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-19 08:01 +0000
                Re: How do I display unicode value stored in a string variable using ord() Paul Rubin <no.email@nospam.invalid> - 2012-08-19 01:11 -0700
                Re: How do I display unicode value stored in a string variable using ord() Chris Angelico <rosuav@gmail.com> - 2012-08-19 18:24 +1000
                Re: How do I display unicode value stored in a string variable using ord() Paul Rubin <no.email@nospam.invalid> - 2012-08-19 01:44 -0700
                Re: How do I display unicode value stored in a string variable using ord() wxjmfauth@gmail.com - 2012-08-19 01:54 -0700
                Re: How do I display unicode value stored in a string variable using ord() Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-19 11:46 +0100
                Re: How do I display unicode value stored in a string variable using ord() Terry Reedy <tjreedy@udel.edu> - 2012-08-19 12:31 -0400
                Re: How do I display unicode value stored in a string variable using ord() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-19 10:51 +0000
                Re: How do I display unicode value stored in a string variable using ord() Neil Hodgson <nhodgson@iinet.net.au> - 2012-08-21 17:03 +1000
        Re: How do I display unicode value stored in a string variable using ord() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-19 06:09 +0000
          Re: How do I display unicode value stored in a string variable using ord() Paul Rubin <no.email@nospam.invalid> - 2012-08-19 01:04 -0700
            Re: How do I display unicode value stored in a string variable using ord() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-19 13:25 +0000
              Re: How do I display unicode value stored in a string variable using ord() DJC <djc@news.invalid> - 2012-08-19 17:32 +0200
            Re: How do I display unicode value stored in a string variable using ord() Terry Reedy <tjreedy@udel.edu> - 2012-08-19 13:34 -0400
              Re: How do I display unicode value stored in a string variable using ord() Paul Rubin <no.email@nospam.invalid> - 2012-08-19 10:48 -0700
                Re: How do I display unicode value stored in a string variable using ord() wxjmfauth@gmail.com - 2012-08-19 11:11 -0700
                Re: How do I display unicode value stored in a string variable using ord() Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-19 19:50 +0100
                Re: How do I display unicode value stored in a string variable using ord() Terry Reedy <tjreedy@udel.edu> - 2012-08-19 17:59 -0400
                Re: How do I display unicode value stored in a string variable using ord() rusi <rustompmody@gmail.com> - 2012-08-19 23:13 -0700
                Abuse of Big Oh notation [was Re: How do I display unicode value stored in a string variable using ord()] Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-19 20:15 +0000
                Re: Abuse of Big Oh notation Paul Rubin <no.email@nospam.invalid> - 2012-08-19 16:42 -0700
                Re: Abuse of Big Oh notation Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2012-08-20 09:24 +0100
                Re: Abuse of Big Oh notation Paul Rubin <no.email@nospam.invalid> - 2012-08-20 09:01 -0700
                Re: Abuse of Big Oh notation Chris Angelico <rosuav@gmail.com> - 2012-08-21 02:09 +1000
                Re: Abuse of Big Oh notation Ian Kelly <ian.g.kelly@gmail.com> - 2012-08-20 11:12 -0600
                Re: Abuse of Big Oh notation Paul Rubin <no.email@nospam.invalid> - 2012-08-20 12:29 -0700
                Re: Abuse of Big Oh notation 88888 Dihedral <dihedral88888@googlemail.com> - 2012-08-20 15:16 -0700
                Re: Abuse of Big Oh notation 88888 Dihedral <dihedral88888@googlemail.com> - 2012-08-20 15:20 -0700
                Re: Abuse of Big Oh notation Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-21 09:53 +0000
                Re: Abuse of Big Oh notation wxjmfauth@gmail.com - 2012-08-20 11:42 -0700
                Re: Abuse of Big Oh notation Ned Deily <nad@acm.org> - 2012-08-20 18:19 -0700
                Abuse of subject, was Re: Abuse of Big Oh notation Peter Otten <__peter__@web.de> - 2012-08-21 09:52 +0200
                Re: Abuse of subject, was Re: Abuse of Big Oh notation wxjmfauth@gmail.com - 2012-08-21 10:16 -0700
                Re: Abuse of subject, was Re: Abuse of Big Oh notation wxjmfauth@gmail.com - 2012-08-21 10:16 -0700
                Re: Abuse of Big Oh notation wxjmfauth@gmail.com - 2012-08-20 11:42 -0700
                Re: How do I display unicode value stored in a string variable using ord() Hans Mulder <hansmu@xs4all.nl> - 2012-08-22 20:53 +0200
            Re: How do I display unicode value stored in a string variable using ord() Chris Angelico <rosuav@gmail.com> - 2012-08-20 08:42 +1000
              Re: How do I display unicode value stored in a string variable using ord() Roy Smith <roy@panix.com> - 2012-08-19 19:24 -0400
                Re: How do I display unicode value stored in a string variable using ord() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-20 04:21 +0000
                Re: How do I display unicode value stored in a string variable using ord() Roy Smith <roy@panix.com> - 2012-08-20 00:44 -0400
                Re: How do I display unicode value stored in a string variable using ord() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-20 05:56 +0000
                Re: How do I display unicode value stored in a string variable using ord() Paul Rubin <no.email@nospam.invalid> - 2012-08-19 23:24 -0700
                Re: How do I display unicode value stored in a string variable using ord() Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-08-20 12:58 -0400
            Re: How do I display unicode value stored in a string variable using ord() Terry Reedy <tjreedy@udel.edu> - 2012-08-19 20:35 -0400
            Re: How do I display unicode value stored in a string variable using ord() Chris Angelico <rosuav@gmail.com> - 2012-08-20 14:07 +1000
          Re: How do I display unicode value stored in a string variable using ord() lipska the kat <lipskathekat@yahoo.co.uk> - 2012-08-19 11:13 +0100
            Re: How do I display unicode value stored in a string variable using ord() Chris Angelico <rosuav@gmail.com> - 2012-08-19 20:19 +1000
              Re: How do I display unicode value stored in a string variable using ord() lipska the kat <lipskathekat@yahoo.co.uk> - 2012-08-19 11:49 +0100
      Re: How do I display unicode value stored in a string variable using ord() "Blind Anagram" <noname@nowhere.com> - 2012-08-19 18:03 +0100
        Re: How do I display unicode value stored in a string variable using ord() wxjmfauth@gmail.com - 2012-08-19 10:33 -0700
          Re: How do I display unicode value stored in a string variable using ord() "Blind Anagram" <noname@nowhere.com> - 2012-08-19 19:04 +0100
        Re: How do I display unicode value stored in a string variable using ord() Dave Angel <d@davea.name> - 2012-08-19 14:05 -0400
          Re: How do I display unicode value stored in a string variable usingord() "Blind Anagram" <noname@nowhere.com> - 2012-08-19 19:18 +0100
        Re: How do I display unicode value stored in a string variable using ord() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-19 20:31 +0000
        Re: How do I display unicode value stored in a string variable using ord() Terry Reedy <tjreedy@udel.edu> - 2012-08-19 17:03 -0400
        Re: How do I display unicode value stored in a string variable using ord() 88888 Dihedral <dihedral88888@googlemail.com> - 2012-08-19 17:32 -0700
        Re: How do I display unicode value stored in a string variable using ord() Piet van Oostrum <piet@vanoostrum.org> - 2012-08-20 17:20 -0400

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