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Re: Python 2 to 3 conversion - embrace the pain

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From Terry Reedy <tjreedy@udel.edu>
Subject Re: Python 2 to 3 conversion - embrace the pain
Date Mon, 16 Mar 2015 04:53:51 -0400
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On 3/16/2015 1:07 AM, Paul Rubin wrote:

> I saved a quote from Hacker News a while back (I don't know who the
> author is):
>
>      "You know why I'm not running python 3?
 >       Because it doesn't solve a single problem I have.

Quite possibly true.

 >        It doesn't solve anyone's problems. It solves
>      imaginary problems, while creating real problems."

A blatent, selfish lie.

>        https://news.ycombinator.com/item?id=7802575
>
> I think the person went a bit overboard,

I call it more than a bit overboard.  But anyway ...

> but other than the Unicode revamp I don't know what Python 3
 > improvements couldn't have been done
> in Python 2 without breaking anything.

Every change potentially breaks something.  (How would you have changed 
1/2 from 0 to .5 without breaking anything?) The issue is cost versus 
gain.  We do maintenance bugfix releases because the gain for bugfixes, 
and the gain of applying them immediately, is *usually* considered 
greater than the cost.  Some bugfixes are delayed to the 'next' version. 
  Non-bugfix changes require deprecation for at least one version before 
making the change.

-- 
Terry Jan Reedy

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Thread

Re: Python 2 to 3 conversion - embrace the pain Chris Angelico <rosuav@gmail.com> - 2015-03-16 14:22 +1100
  Re: Python 2 to 3 conversion - embrace the pain Paul Rubin <no.email@nospam.invalid> - 2015-03-15 22:07 -0700
    Re: Python 2 to 3 conversion - embrace the pain Chris Angelico <rosuav@gmail.com> - 2015-03-16 16:39 +1100
      Re: Python 2 to 3 conversion - embrace the pain Paul Rubin <no.email@nospam.invalid> - 2015-03-15 23:17 -0700
        Re: Python 2 to 3 conversion - embrace the pain Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-03-16 19:00 +1100
          Re: Python 2 to 3 conversion - embrace the pain Paul Rubin <no.email@nospam.invalid> - 2015-03-16 01:31 -0700
            Re: Python 2 to 3 conversion - embrace the pain Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-03-17 00:05 +1100
              Re: Python 2 to 3 conversion - embrace the pain Chris Angelico <rosuav@gmail.com> - 2015-03-17 00:29 +1100
            Re: Python 2 to 3 conversion - embrace the pain Terry Reedy <tjreedy@udel.edu> - 2015-03-16 13:59 -0400
      Re: Python 2 to 3 conversion - embrace the pain Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-03-16 18:56 +1100
        Re: Python 2 to 3 conversion - embrace the pain Paul Rubin <no.email@nospam.invalid> - 2015-03-16 01:25 -0700
          Re: Python 2 to 3 conversion - embrace the pain INADA Naoki <songofacandy@gmail.com> - 2015-03-16 18:13 +0900
            Re: Python 2 to 3 conversion - embrace the pain Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-03-16 22:55 +1100
          Re: Python 2 to 3 conversion - embrace the pain Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-03-17 01:25 +1100
            Re: Python 2 to 3 conversion - embrace the pain Paul Rubin <no.email@nospam.invalid> - 2015-03-16 15:36 -0700
              Re: Python 2 to 3 conversion - embrace the pain Terry Reedy <tjreedy@udel.edu> - 2015-03-16 22:28 -0400
                Re: Python 2 to 3 conversion - embrace the pain wxjmfauth@gmail.com - 2015-03-17 01:31 -0700
              Re: Python 2 to 3 conversion - embrace the pain Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-03-17 22:26 +1100
                Re: Python 2 to 3 conversion - embrace the pain wxjmfauth@gmail.com - 2015-03-17 07:03 -0700
                Re: Python 2 to 3 conversion - embrace the pain Mario Figueiredo <marfig@gmail.com> - 2015-03-17 15:35 +0100
                Re: Python 2 to 3 conversion - embrace the pain Paul Rubin <no.email@nospam.invalid> - 2015-03-19 16:23 -0700
                Re: Python 2 to 3 conversion - embrace the pain Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-03-19 22:03 -0400
                Re: Python 2 to 3 conversion - embrace the pain Mario Figueiredo <marfig@gmail.com> - 2015-03-20 03:54 +0100
          Re: Python 2 to 3 conversion - embrace the pain Michael Torrie <torriem@gmail.com> - 2015-03-16 11:20 -0600
            Re: Python 2 to 3 conversion - embrace the pain Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-03-17 07:36 +1100
              Re: Python 2 to 3 conversion - embrace the pain Michael Torrie <torriem@gmail.com> - 2015-03-16 20:14 -0600
              Re: Python 2 to 3 conversion - embrace the pain Cameron Simpson <cs@zip.com.au> - 2015-03-17 17:47 +1100
          Re: Python 2 to 3 conversion - embrace the pain Terry Reedy <tjreedy@udel.edu> - 2015-03-16 13:47 -0400
          Re: Python 2 to 3 conversion - embrace the pain Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-03-16 18:14 +0000
          Re: Python 2 to 3 conversion - embrace the pain INADA Naoki <songofacandy@gmail.com> - 2015-03-17 04:41 +0900
          Re: Python 2 to 3 conversion - embrace the pain Chris Angelico <rosuav@gmail.com> - 2015-03-17 09:02 +1100
            Re: Python 2 to 3 conversion - embrace the pain Mario Figueiredo <marfig@gmail.com> - 2015-03-17 04:04 +0100
              Re: Python 2 to 3 conversion - embrace the pain Michael Torrie <torriem@gmail.com> - 2015-03-16 21:33 -0600
                Re: Python 2 to 3 conversion - embrace the pain Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-03-17 19:36 +1100
              Re: Python 2 to 3 conversion - embrace the pain Ben Finney <ben+python@benfinney.id.au> - 2015-03-17 14:42 +1100
                Re: Python 2 to 3 conversion - embrace the pain Mario Figueiredo <marfig@gmail.com> - 2015-03-17 05:30 +0100
                Re: Python 2 to 3 conversion - embrace the pain Cameron Simpson <cs@zip.com.au> - 2015-03-18 08:53 +1100
              Re: Python 2 to 3 conversion - embrace the pain Chris Angelico <rosuav@gmail.com> - 2015-03-17 14:49 +1100
                Re: Python 2 to 3 conversion - embrace the pain Mario Figueiredo <marfig@gmail.com> - 2015-03-17 05:26 +0100
                Re: Python 2 to 3 conversion - embrace the pain Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-03-17 04:36 +0000
                Re: Python 2 to 3 conversion - embrace the pain Grant Edwards <invalid@invalid.invalid> - 2015-03-17 14:50 +0000
                Re: Python 2 to 3 conversion - embrace the pain wxjmfauth@gmail.com - 2015-03-17 08:15 -0700
                Re: Python 2 to 3 conversion - embrace the pain Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-03-17 18:36 -0400
                Re: Python 2 to 3 conversion - embrace the pain Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-03-17 22:41 +0000
                Re: Python 2 to 3 conversion - embrace the pain Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-03-18 08:04 -0400
                Re: Python 2 to 3 conversion - embrace the pain Mario Figueiredo <marfig@gmail.com> - 2015-03-18 02:02 +0100
          [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Michael Torrie <torriem@gmail.com> - 2015-03-16 19:46 -0600
            Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-03-17 19:39 +1100
              Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Michael Torrie <torriem@gmail.com> - 2015-03-17 09:02 -0600
            Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Michael Torrie <torriem@gmail.com> - 2015-03-19 16:37 -0600
              Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain wxjmfauth@gmail.com - 2015-03-20 02:40 -0700
                Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Mario Figueiredo <marfig@gmail.com> - 2015-03-20 15:59 +0100
                Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Mario Figueiredo <marfig@gmail.com> - 2015-03-20 16:03 +0100
                Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-03-20 15:42 +0000
                Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Chris Angelico <rosuav@gmail.com> - 2015-03-21 04:13 +1100
                Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain wxjmfauth@gmail.com - 2015-03-20 12:21 -0700
          Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Chris Angelico <rosuav@gmail.com> - 2015-03-17 12:57 +1100
            Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Paul Rubin <no.email@nospam.invalid> - 2015-03-16 19:45 -0700
              Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Michael Torrie <torriem@gmail.com> - 2015-03-16 21:05 -0600
          Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Michael Torrie <torriem@gmail.com> - 2015-03-16 20:07 -0600
          Re: Python 2 to 3 conversion - embrace the pain Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-03-17 02:21 +0000
          Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Ben Finney <ben+python@benfinney.id.au> - 2015-03-17 13:40 +1100
            Package manager cooperation? (was Weaknesses of distro package managers) Rustom Mody <rustompmody@gmail.com> - 2015-03-16 20:09 -0700
              Re: Package manager cooperation? (was Weaknesses of distro package managers) Michael Torrie <torriem@gmail.com> - 2015-03-16 21:32 -0600
              Re: Package manager cooperation? (was Weaknesses of distro package managers) Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-03-17 04:03 +0000
              Re: Package manager cooperation? (was Weaknesses of distro package managers) Chris Angelico <rosuav@gmail.com> - 2015-03-17 15:18 +1100
                Re: Package manager cooperation? (was Weaknesses of distro package managers) wxjmfauth@gmail.com - 2015-03-17 01:44 -0700
          Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Michael Torrie <torriem@gmail.com> - 2015-03-16 20:51 -0600
          Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-03-17 03:01 +0000
          Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Michael Torrie <torriem@gmail.com> - 2015-03-16 21:05 -0600
            Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Mario Figueiredo <marfig@gmail.com> - 2015-03-17 04:07 +0100
          Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-03-17 03:17 +0000
          Re: [OT] Weaknesses of distro package managers - was Re: Python 2 to 3 conversion - embrace the pain Alexander <xr.lists@gmail.com> - 2015-03-17 16:44 +1300
        Re: Python 2 to 3 conversion - embrace the pain Chris Angelico <rosuav@gmail.com> - 2015-03-16 19:51 +1100
    Re: Python 2 to 3 conversion - embrace the pain Terry Reedy <tjreedy@udel.edu> - 2015-03-16 04:53 -0400
      Re: Python 2 to 3 conversion - embrace the pain Paul Rubin <no.email@nospam.invalid> - 2015-03-16 02:27 -0700

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