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

[Giovanni Bajo]

On 22/01/2007 23.45, Collin Winter wrote:

> target, thus eliminating the reference cycle. The source-to-source
> translation, as suggested by Phillip J. Eby [#except-translation]_ is
> ::
> 
>     try:
>         ...
>     except E as N:
>         ...
>     ...
>     
> is translated to ::
> 
>     try:
>         ...
>     except E as N:
>         ...
>         N = None
>         del N
>     ...
> 

The mail you link (which matched my recollection of the thread) has an 
additional try/finally suite in the except block translation:

    except ExcType, e:
            try:
                # body
            finally:
                e = None
                del e

which is missing in the PEP. I think you should probably explain why the 
try/finally is not needed (if it really is not).

Also, the second code snippet should probably use the "except E, N" form (no 
"as") to make more clear that you're speaking of the Python 2.x equivalent of 
the 3.x form.
-- 
Giovanni Bajo