At 10:16 AM 1/17/05 -0800, Guido van Rossum wrote:
On Mon, 17 Jan 2005 11:35:53 -0500, Phillip J. Eby
<[EMAIL PROTECTED]> wrote:
> At 04:06 PM 1/17/05 +0000, Michael Hudson wrote:
> >a) Is Exception to be new-style?
>
> Probably not in 2.5; Martin and others have suggested that this could
> introduce instability for users' existing exception classes.

Really? I thought that was eventually decided to be a very small amount of code.

Guess I missed that part of the thread in the ongoing flood of PEP 246 stuff. :)



That would be much more reasonable if Exception itself was a new-style
class. As long as it isn't, you'd have to declare new-style classes
like this:

class MyError(Exception, object):
    ...

which is ugly.

I was thinking the use case was that you were having to add 'Exception', not that you were adding 'object'. The two times in the past that I wanted to make a new-style class an exception, I *first* made it a new-style class, and *then* tried to make it an exception. I believe the OP on this thread described the same thing.


But whatever; as long as it's *possible*, I don't care much how it's done, and I can't think of anything in my code that would break from making Exception new-style.

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