[ZODB-Dev] RFC: Remove KeyError as base class of POSKeyError

[Paul Winkler]

Yes thank you!!


Paul Winkler
--
Typed on my phone. Apologies for typos, brevity, and/or bizarre word
substitutions.

On Dec 15, 2011, at 11:52 AM, Jim Fulton <jim at zope.com> wrote:

> POSKeyError subclasses KeyError.  While this makes sense conceptually,
> it's really unfortunate in practice.  Application code that catches
> key errors when getting an item from a container, will unintentionally
> hide POSKeyErrors.
>
> I propose to remove KeyError as a base class of POSKeyError.  While
> this is a backward incompatible change, I can't imagine unbroken code
> that intentionally catches POSKeyErrors via KeErrors.
>
> If there are no objections, I'll make this change in 3.11.
>
> JIm
>
> --
> Jim Fulton
> http://www.linkedin.com/in/jimfulton
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