[Python-Dev] Python 4 musings (was Re: Deleting with setting C API functions)

[Gregory P. Smith]

Except that we should skip version 4 and go directly to 5 in homage to
http://www.montypython.net/scripts/HG-handgrenade.php.

On Wed, Dec 2, 2015 at 9:13 AM Guido van Rossum <guido at python.org> wrote:

> On Wed, Dec 2, 2015 at 8:57 AM, Barry Warsaw <barry at python.org> wrote:
>
>> On Dec 02, 2015, at 08:35 AM, Guido van Rossum wrote:
>>
>> >I wholeheartedly agree with what Nick writes there
>>
>> As do I.
>>
>> One interesting point will be what *nix calls the /usr/bin thingie for
>> Python
>> 4.  It would seem weird to call it /usr/bin/python3 and symlink it to say
>> /usr/bin/python4.0 but maybe that's the most practical solution.  OTOH, by
>> 2023, Python 2 will at worst be in source-only security release mode, if
>> not
>> finally retired so maybe we can reclaim /usr/bin/python by then.  Oh
>> well, PEP
>> 394 will hash all that out I'm sure.
>>
>
> Maybe the criteria for switching to 4 would be that all traces of 2 are
> gone.
>
>
>> One other potentially disruptive change would be when Python's Einstein,
>> er
>> David Beazley, finally cracks the nut of the GIL.  Should that require a
>> new
>> backward incompatible C API, Python 4.0 would be the time to do it.
>>
>
> There would still have to be a backward compatibility API for a very long
> time. So I don't see why this particular change (however eagerly
> anticipated! :-) should force a major version bump.
>
> --
> --Guido van Rossum (python.org/~guido)
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