Aahz wrote:

> > Also maybe start issuing warnings whenever you inherit directly from
> > Exception.
> 
> -1 -- I occasionally use exceptions as a multi-loop break.  That's a
> perfectly valid Python practice, those exceptions should inherit from
> Exception, and there should not be any warnings raised.

There probably should be a ControlFlowException category
for these that would also include StopIteration and
GeneratorExit. I don't think it should include *all*
exceptions other than Errors or Warnings, though.
SystemExit and KeyboardInterrupt remain two things
that you will almost always not want to catch, even
in a top-level catch-almost-everything loop. So I'd
leave these two out on their own.

-- 
Greg Ewing, Computer Science Dept, +--------------------------------------+
University of Canterbury,          | Carpe post meridiam!                 |
Christchurch, New Zealand          | (I'm not a morning person.)          |
[EMAIL PROTECTED]          +--------------------------------------+
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