[Python-3000] Pre-peps on raise and except changes

[Jim Jewett]

On 1/23/07, Collin Winter <collinw at gmail.com> wrote:
> Does this language work for you?

> """
> 2. ``raise E`` (with a single argument) is used to raise a new
>    exception. This form has two sub-variants: ``E`` may be either an
>    instance of ``BaseException`` [#pep352]_ or a subclass of
>    ``BaseException``. If ``E`` is a subclass, it will be called with
>    no arguments to obtain an exception instance.
>
>    To raise anything else is an error.
> """

It works for me.  In particular, it even clears up the pathological
case of an object which is both a subclass and an instance of
BaseException.

-jJ