[Python-Dev] PEP 4000 to explicitly declare we won't be doing a Py3k style compatibility break again?

[francis]

On 08/17/2014 03:28 AM, Nick Coghlan wrote:
> I've seen a few people on python-ideas express the assumption that
> there will be another Py3k style compatibility break for Python 4.0.
>
> I've also had people express the concern that "you broke compatibility
> in a major way once, how do we know you won't do it again?".
>

Why not just allow those changes that can be automatically changed by
a tool/script applied on the code (a la go, 2to3, 3.Ato3.B, ...)?