[Python-Dev] Proposal for new 2to23 tool (original) (raw)

Brett Cannon brett at python.org
Mon Nov 12 19:17:34 CET 2007

On Nov 12, 2007 12:50 AM, Graham Horler <graham.horler at gmail.com> wrote:

On 12 Nov 2007, 03:24:34, Jan Claeys wrote: > > Op zondag 11-11-2007 om 17:19 uur [tijdzone -0800], schreef Brett > Cannon: > > On Nov 11, 2007 4:00 PM, Graham Horler <graham.horler at gmail.com> wrote: > > > I have been developing in Python since 1.5, and now have to support 2.1 > > > as a minimum version. I do like to keep my code runnable on newer > > > versions however, and am considering the feasability of forward > > > compatibility with Python 3.0. > > > > > > I also notice the Leo[1] project could use some assistance with forward > > > compatibility. > > > > > > So I was wondering if anyone else had a need for a 2to23.py tool to help > > > make code compatible with 3.0 but not break it for 2.x. > > > > What exactly are you proposing? We already have 2to3 > > (http://svn.python.org/view/sandbox/trunk/2to3/) for source-to-source > > translation from 2.x to 3.0. > > Graham wants to convert his code such that it works on both Python 2.x > (probably even early versions of it?) & Python 3.x. Not 2 instances of > code, but one source that works on both 2.x and 3.x...

Absolutely

Well, we will do our best to make a common base between 2.6 and 3.0. But since things are still in flux who knows if everything can somehow be added through a future statement in 2.6. As for supporting older versions, that won't happen.

-Brett

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