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Re: Well, I finally ran into a Python Unicode problem, sort of

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Subject Re: Well, I finally ran into a Python Unicode problem, sort of
Date Sun, 3 Jul 2016 20:41:48 +0100
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On 2016-07-03 19:39, John Ladasky wrote:
> On Sunday, July 3, 2016 at 12:42:14 AM UTC-7, Chris Angelico wrote:
>> On Sun, Jul 3, 2016 at 4:58 PM, John Ladasky wrote:
>
>> Very good question! The detaily answer is here:
>>
>> https://docs.python.org/3/reference/lexical_analysis.html#identifiers
>>
>> > A philosophical question.  Why should any character be excluded from a variable name, besides the fact that it might also be an operator?
>>
>> In a way, that's exactly what's happening here. Python permits certain
>> categories of character as identifiers, leaving other categories
>> available for operators. Even though there aren't any non-ASCII
>> operators in a vanilla CPython, it's plausible that someone could
>> create a Python-based language with more operators (eg ≠ NOT EQUAL TO
>> as an alternative to !=), and I'm sure you'd agree that saying "≠ = 1"
>> is nonsensical.
>
> I agree that there are some characters in the Unicode definition that could (should?) be operators and, as such, disallowed in identifiers.  "≠", "≥" and "√" come to mind.  I don't know whether the Unicode "character properties" are assigned to the characters in a way that would be satisfying to the needs of programmers.  I'll do some reading.
>
>> Symbols like that are a bit of a
>> grey area, so you may find that you're starting a huge debate :)
>
> Oh, I can see that debate coming.  I know that not all of these characters are easily TYPED, and so I have to reach for a Unicode table to cut and paste them.  But once but and pasted, they are easily READ, and that's a big plus.
>
> Here's another worm for the can.  Would you rather read this...
>
> d = sqrt(x**2 + y**2)
>
> ...or this?
>
> d = √(x² + y²)
>
It's easy to read something as simple like that, but it's harder when 
the exponent is more than a number or a variable. And what about a**b**c?

Not to mention the limited number of superscript codepoints available...

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Well, I finally ran into a Python Unicode problem, sort of John Ladasky <john_ladasky@sbcglobal.net> - 2016-07-02 23:58 -0700
  Re: Well, I finally ran into a Python Unicode problem, sort of Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-03 00:07 -0700
    Re: Well, I finally ran into a Python Unicode problem, sort of Marko Rauhamaa <marko@pacujo.net> - 2016-07-03 10:26 +0300
      Re: Well, I finally ran into a Python Unicode problem, sort of Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-03 01:38 -0700
        Re: Well, I finally ran into a Python Unicode problem, sort of Marko Rauhamaa <marko@pacujo.net> - 2016-07-03 12:01 +0300
          Re: Well, I finally ran into a Python Unicode problem, sort of Chris Angelico <rosuav@gmail.com> - 2016-07-04 01:14 +1000
          Re: Well, I finally ran into a Python Unicode problem, sort of Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-03 14:21 -0700
    Re: Well, I finally ran into a Python Unicode problem, sort of John Ladasky <john_ladasky@sbcglobal.net> - 2016-07-03 09:24 -0700
  Re: Well, I finally ran into a Python Unicode problem, sort of Rustom Mody <rustompmody@gmail.com> - 2016-07-03 00:26 -0700
  Re: Well, I finally ran into a Python Unicode problem, sort of Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-07-03 10:29 +0300
    Re: Well, I finally ran into a Python Unicode problem, sort of Robert Kern <robert.kern@gmail.com> - 2016-07-03 10:16 +0100
  Re: Well, I finally ran into a Python Unicode problem, sort of Chris Angelico <rosuav@gmail.com> - 2016-07-03 17:41 +1000
    Re: Well, I finally ran into a Python Unicode problem, sort of John Ladasky <john_ladasky@sbcglobal.net> - 2016-07-03 11:39 -0700
      Re: Well, I finally ran into a Python Unicode problem, sort of MRAB <python@mrabarnett.plus.com> - 2016-07-03 20:41 +0100
      Re: Well, I finally ran into a Python Unicode problem, sort of Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-03 14:28 -0700
        Re: Well, I finally ran into a Python Unicode problem, sort of Steven D'Aprano <steve@pearwood.info> - 2016-07-04 12:33 +1000
          Re: Well, I finally ran into a Python Unicode problem, sort of Rustom Mody <rustompmody@gmail.com> - 2016-07-03 22:14 -0700
            Re: Well, I finally ran into a Python Unicode problem, sort of Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-04 01:11 -0700
              Re: Well, I finally ran into a Python Unicode problem, sort of Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-07-04 13:10 +0300
              Re: Well, I finally ran into a Python Unicode problem, sort of Marko Rauhamaa <marko@pacujo.net> - 2016-07-04 12:04 +0300
            Re: Well, I finally ran into a Python Unicode problem, sort of Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-07-04 09:08 +0300
  Re: Well, I finally ran into a Python Unicode problem, sort of Alain Ketterlin <alain@universite-de-strasbourg.fr.invalid> - 2016-07-03 11:53 +0200
    Re: Well, I finally ran into a Python Unicode problem, sort of Marko Rauhamaa <marko@pacujo.net> - 2016-07-03 14:01 +0300
      Re: Well, I finally ran into a Python Unicode problem, sort of Christian Gollwitzer <auriocus@gmx.de> - 2016-07-03 13:16 +0200
        Re: Well, I finally ran into a Python Unicode problem, sort of Marko Rauhamaa <marko@pacujo.net> - 2016-07-03 14:22 +0300
          Re: Well, I finally ran into a Python Unicode problem, sort of Christian Gollwitzer <auriocus@gmx.de> - 2016-07-03 16:05 +0200
            Re: Well, I finally ran into a Python Unicode problem, sort of Marko Rauhamaa <marko@pacujo.net> - 2016-07-03 17:39 +0300
          Re: Well, I finally ran into a Python Unicode problem, sort of Random832 <random832@fastmail.com> - 2016-07-03 16:49 -0400
            Re: Well, I finally ran into a Python Unicode problem, sort of Marko Rauhamaa <marko@pacujo.net> - 2016-07-04 00:25 +0300
      Re: Well, I finally ran into a Python Unicode problem, sort of BartC <bc@freeuk.com> - 2016-07-03 12:50 +0100
        Re: Well, I finally ran into a Python Unicode problem, sort of Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-03 14:26 -0700
  Re: Well, I finally ran into a Python Unicode problem, sort of eryk sun <eryksun@gmail.com> - 2016-07-03 23:46 +0000
    Re: Well, I finally ran into a Python Unicode problem, sort of Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-03 17:00 -0700
      Re: Well, I finally ran into a Python Unicode problem, sort of BartC <bc@freeuk.com> - 2016-07-04 01:17 +0100
        Re: Well, I finally ran into a Python Unicode problem, sort of Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-03 17:24 -0700
          Re: Well, I finally ran into a Python Unicode problem, sort of BartC <bc@freeuk.com> - 2016-07-04 01:39 +0100
            Re: Well, I finally ran into a Python Unicode problem, sort of Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-03 18:15 -0700
              Re: Well, I finally ran into a Python Unicode problem, sort of Random832 <random832@fastmail.com> - 2016-07-03 22:20 -0400
              Re: Well, I finally ran into a Python Unicode problem, sort of Rustom Mody <rustompmody@gmail.com> - 2016-07-04 05:16 -0700
              Re: Well, I finally ran into a Python Unicode problem, sort of BartC <bc@freeuk.com> - 2016-07-04 11:26 +0100
        Re: Well, I finally ran into a Python Unicode problem, sort of Steven D'Aprano <steve@pearwood.info> - 2016-07-04 12:30 +1000
          Re: Well, I finally ran into a Python Unicode problem, sort of Ned Batchelder <ned@nedbatchelder.com> - 2016-07-04 05:47 -0700
            Re: Well, I finally ran into a Python Unicode problem, sort of BartC <bc@freeuk.com> - 2016-07-04 15:36 +0100
              Re: Well, I finally ran into a Python Unicode problem, sort of Ned Batchelder <ned@nedbatchelder.com> - 2016-07-04 07:46 -0700
                Re: Well, I finally ran into a Python Unicode problem, sort of BartC <bc@freeuk.com> - 2016-07-04 17:16 +0100
                Re: Well, I finally ran into a Python Unicode problem, sort of Marko Rauhamaa <marko@pacujo.net> - 2016-07-04 19:44 +0300
          Re: Well, I finally ran into a Python Unicode problem, sort of BartC <bc@freeuk.com> - 2016-07-04 11:05 +0100
            Re: Well, I finally ran into a Python Unicode problem, sort of Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-07-04 13:26 +0300
      Re: Well, I finally ran into a Python Unicode problem, sort of Random832 <random832@fastmail.com> - 2016-07-03 22:16 -0400

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