[Python-Dev] Pre-PEP: Exception Reorganization for Python 3.0

[Brett Cannon]

On 7/30/05, Fred L. Drake, Jr. <fdrake at acm.org> wrote:
> On Saturday 30 July 2005 22:20, Brett Cannon wrote:
>  > True, but the hierarchy should still properly reflect increasing
>  > severity in my opinion.  I am going to push for this; we will see if I
>  > get pushed back enough to not do it.
> 
> I have no idea what you mean by "properly reflect increasing severity".
> Should the more severe or less severe case be derived from the other?  I
> doubt there is a single answer that we can readily agree on.
> 
> If DeprecationWarning and PendingDeprecationWarning need a class-hierarchy
> relationship (and I think they do; it *is* reasonable for someone to deal
> with them generically if they can reasonably want to deal with either), then
> it seems they need a common base:
> 
>   +--AnyDeprecationWarning
>      +--DeprecationWarning
>      +--PendingDeprecationWarning
> 

I can compromise and go with a common base class that both directly
inherit from.

-Brett