Re: How to waste computer memory?

From	Marko Rauhamaa <marko@pacujo.net>
Newsgroups	comp.lang.python
Subject	Re: How to waste computer memory?
Date	2016-03-19 16:56 +0200
Organization	A noiseless patient Spider
Message-ID	<87bn6aldmy.fsf@elektro.pacujo.net> (permalink)
References	(10 earlier) <87lh5en79a.fsf@elektro.pacujo.net> <mailman.385.1458382742.12893.python-list@python.org> <56ed38bb$0$1584$c3e8da3$5496439d@news.astraweb.com> <87oaaaljui.fsf@elektro.pacujo.net> <56ed64b4$0$1596$c3e8da3$5496439d@news.astraweb.com>

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Steven D'Aprano <steve@pearwood.info>:

> On Sat, 19 Mar 2016 11:42 pm, Marko Rauhamaa wrote:
>> When glorifying Python's advanced Unicode capabilities, are we
>> careful to emphasize the necessity of unicodedata.normalize()
>> everywhere? Should Python normalize strings unconditionally and
>> transparently? What does the O(1) character lookup mean under
>> normalization?
>> 
>> Some weeks ago I had to spend 30 minutes to debug my Python program
>> when a user complained it didn't work. Turns out they had
>> accidentally invoked the program using a space and a composing tilde
>> instead of the ASCII ~. There was no visual indication of a problem
>> on the screen, but the Python program acted up.
>
> We recently had somebody here who wrote capital I by pressing the
> lower case l on the keyboard. Should a pure-ASCII program be able to
> operate without malfunction if the user confuses 0 and O, or I l and
> 1? What about ' and ` or possibly even '' and "?

What I'm talking about is that maybe Python should treat canonically
equivalent strings equivalently, that is, indistinguishably under any
external inspection.

Anyway, Python's Unicode support is great thing, but Unicode is a big
can of worms. Far from being a paradise, it's more of a case of picking
your poison.


Marko

Thread

How to waste computer memory? wxjmfauth@gmail.com - 2016-03-17 07:34 -0700
  Re: How to waste computer memory? Rick Johnson <rantingrickjohnson@gmail.com> - 2016-03-17 12:21 -0700
    Re: How to waste computer memory? cl@isbd.net - 2016-03-17 20:31 +0000
      Re: How to waste computer memory? Chris Angelico <rosuav@gmail.com> - 2016-03-18 07:42 +1100
        Re: How to waste computer memory? Grant Edwards <invalid@invalid.invalid> - 2016-03-17 21:08 +0000
          Re: How to waste computer memory? Chris Angelico <rosuav@gmail.com> - 2016-03-18 08:13 +1100
            Re: How to waste computer memory? Paul Rubin <no.email@nospam.invalid> - 2016-03-17 14:30 -0700
          Re: How to waste computer memory? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2016-03-17 22:32 +0000
          Re: How to waste computer memory? cl@isbd.net - 2016-03-17 22:42 +0000
        Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-17 23:11 +0200
          Re: How to waste computer memory? Chris Angelico <rosuav@gmail.com> - 2016-03-18 08:17 +1100
          Re: How to waste computer memory? BartC <bc@freeuk.com> - 2016-03-17 21:26 +0000
            Re: How to waste computer memory? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2016-03-17 22:38 +0000
            Re: How to waste computer memory? Chris Angelico <rosuav@gmail.com> - 2016-03-18 10:02 +1100
        Re: How to waste computer memory? alister <alister.ware@ntlworld.com> - 2016-03-17 21:37 +0000
          Re: How to waste computer memory? alister <alister.ware@ntlworld.com> - 2016-03-17 21:43 +0000
          Re: How to waste computer memory? Gene Heskett <gheskett@wdtv.com> - 2016-03-17 20:51 -0400
            Re: How to waste computer memory? Rick Johnson <rantingrickjohnson@gmail.com> - 2016-03-17 18:47 -0700
            Re: How to waste computer memory? cl@isbd.net - 2016-03-18 10:44 +0000
              Re: How to waste computer memory? Gene Heskett <gheskett@wdtv.com> - 2016-03-18 10:11 -0400
              Re: How to waste computer memory? Grant Edwards <invalid@invalid.invalid> - 2016-03-19 13:50 +0000
    Re: How to waste computer memory? Ian Kelly <ian.g.kelly@gmail.com> - 2016-03-18 01:00 -0600
      Re: How to waste computer memory? Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-03-18 10:26 +0200
        Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-18 17:26 +0200
          Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-19 03:58 +1100
          Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-18 23:02 +0200
            Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-18 23:28 +0200
              Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 00:03 +0200
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 09:49 +0200
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 10:22 +0200
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 11:40 +0200
                Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-19 19:38 +1100
            Re: How to waste computer memory? wxjmfauth@gmail.com - 2016-03-19 00:14 -0700
              Re: How to waste computer memory? wxjmfauth@gmail.com - 2016-03-19 02:17 -0700
            Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-19 19:14 +1100
              Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 11:31 +0200
                Re: How to waste computer memory? wxjmfauth@gmail.com - 2016-03-19 03:40 -0700
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 13:07 +0200
                Re: How to waste computer memory? BartC <bc@freeuk.com> - 2016-03-19 12:24 +0000
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 14:43 +0200
                Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-20 01:18 +1100
                Re: How to waste computer memory? BartC <bc@freeuk.com> - 2016-03-19 15:14 +0000
                Re: How to waste computer memory? BartC <bc@freeuk.com> - 2016-03-19 15:20 +0000
                Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-19 22:32 +1100
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 14:42 +0200
                Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-20 01:39 +1100
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 16:56 +0200
                Re: How to waste computer memory? wxjmfauth@gmail.com - 2016-03-19 07:01 -0700
                Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-20 01:56 +1100
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 17:02 +0200
                Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-20 02:47 +1100
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 18:12 +0200
                Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-20 16:01 +1100
                Re: How to waste computer memory? Rustom Mody <rustompmody@gmail.com> - 2016-03-19 23:20 -0700
                Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-20 22:06 +1100
                Re: How to waste computer memory? Chris Angelico <rosuav@gmail.com> - 2016-03-20 22:22 +1100
                Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-20 23:14 +1100
                Re: How to waste computer memory? Chris Angelico <rosuav@gmail.com> - 2016-03-20 23:27 +1100
                Re: How to waste computer memory? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-03-20 14:55 +0000
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-20 17:36 +0200
                Re: How to waste computer memory? Random832 <random832@fastmail.com> - 2016-03-20 14:17 -0400
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-20 09:30 +0200
      Re: How to waste computer memory? wxjmfauth@gmail.com - 2016-03-18 03:50 -0700
      Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-18 22:46 +1100
        Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-18 22:58 +1100
          Re: How to waste computer memory? wxjmfauth@gmail.com - 2016-03-18 12:53 -0700
        Re: How to waste computer memory? Chris Angelico <rosuav@gmail.com> - 2016-03-18 23:37 +1100
        Re: How to waste computer memory? Ian Kelly <ian.g.kelly@gmail.com> - 2016-03-18 07:57 -0600
    Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-19 03:44 +1100
      Re: How to waste computer memory? Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-03-18 20:22 +0200
        Re: How to waste computer memory? wxjmfauth@gmail.com - 2016-03-18 13:03 -0700
  Re: How to waste computer memory? sohcahtoa82@gmail.com - 2016-03-18 11:18 -0700

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