Exceptional inheritance patterns (was Re: [Python-Dev] Python in
Unicode context)
Aahz
aahz at pythoncraft.com
Thu Aug 5 17:26:45 CEST 2004
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/
"To me vi is Zen. To use vi is to practice zen. Every command is a
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discover truth everytime you use it." --reddy at lion.austin.ibm.com
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