[Python-3000] Pre-peps on raise and except changes (was: Warning for 2.6 and greater)

[Phillip J. Eby]

At 02:57 PM 2/9/2007 -0800, Guido van Rossum wrote:
> > On 2/9/07, Guido van Rossum <guido at python.org> wrote:
> > > I agree that this API is better. If it's not in PEP 344 it should be 
> added.
> >
> > Should this be added to PEP 344 or 3109? That is, do you want to see
> > it before Python 3?
>
>I think storing the traceback in the exception is a 3.0 feature, since
>it depends on the effective 'del e' at the end of the except clause
>for avoiding most cycles.

We would then have to have a Python 3.0 API to fetch the traceback, 
otherwise there's no way to write code that works in both 2.6 and 3.0 and 
gets a traceback.  Did we decide to keep sys.exc_info()?  If so, then that 
would presumably work.