[Python-3000] pickle compatibility between 2.x and 3.0

[Alexandre Vassalotti]

On 11/2/07, Gregory P. Smith <greg at krypto.org> wrote:
> Brainstorming here... how about an optional callable argument when
> unpickling to let the developers write their own "magic guess" function?

I think the use cases for this are fairly rare. And, this can easily
be done by subclassing Pickler and Unpickler, without increasing the
overall complexity of the pickle module.

-- Alexandre