Exceptional inheritance patterns (was Re: [Python-Dev] Python in Unicode context)

[Aahz]

On Thu, Aug 05, 2004, Holger Krekel wrote:
> Guido van Rossum wrote:
>>
>> (It will also break code that creates a class used as an exception
>> that doesn't derive from Exception, but those should be shot. :-)
> 
> Then i guess that searching down into a recursive structure and just 
> raising an "i found it" result object up doesn't count as a use case in
> your book, right?   It can avoid boilerplate code like return-if-not-None 
> checks and I have used it for e.g. finding patterns in an AST-Tree. 

In cases where I've done this, I've always inherited from Exception or a
subclass.  Is there any reason not to?
-- 
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

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