Re: [PROPOSAL] GNOME Goal for 3.8: No more Python 2

[David Malcolm <dmalcolm redhat com>]

On Tue, 2012-07-03 at 10:13 -0400, Joanmarie Diggs wrote:
> On 07/03/2012 05:04 AM, Bastien Nocera wrote:
> > On Tue, 2012-07-03 at 09:23 +0200, Olav Vitters wrote:
> >> On Mon, Jun 25, 2012 at 09:44:52AM -0400, Joanmarie Diggs wrote:
> >>> As per earlier discussions, I am proposing that we target GNOME 3.8 as
> >>> our first all Python 3 release.
> >>
> >> Total lack of responses + 3.8 is far away: IMO ok.
> > 
> > Most likely because people don't know what's required. What's the
> > contingency plan? Will we be able to ship 2 version of Python, 2
> > versions of the bindings and have old and new apps work as expected?
> > What's needed for plugins?
> 
> Speaking as someone who did the Python 3 conversion for both Orca and
> Accerciser (code review pending), what I learned in the process is that
> there are many things which are both Python 2 and Python 3 compatible.
> In fact, the bulk of the changes are because quite a bit got backported
> into Python 2. Mind you, those things which did get backported are
> definitely in Python 2.7, might or might not be in Python 2.6, probably
> are not in 2.5....
> 
> Thus if everyone can start with the changes which are both Python 2.7
> and Python 3 compatible, our contingency plan could be a minimum
> required version of Python 2.7.
FWIW, I've found this library to be extremely helpful when maintaining
.py code for the common subset of the 2.x and 3.* dialects:
  http://pypi.python.org/pypi/six/
It may be worth thinking about blessing this as a dependency.

Hope this is helpful
Dave