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On 3/19/06, Greg Ewing firstname.lastname@example.org wrote:
Have we really being telling them to derive directly from Exception, or just that deriving somehow from Exception will become mandatory?
It doesn't matter. Most code that tries to be a good citizen today derives its exceptions from Exception.
For the purpose of minimising bare-except problems, recommending direct derivation from Exception seems like a particularly bad idea, whether the exception hierarchy is changed or not.
Why? With PEP 352 (== HEAD status quo) this works just fine.
I have a problem with using Error as the focal point since so many exceptions (user-defined or otherwise) aren't errors. Not to mention the Warnings which sometimes can be raised as Errors (but without changing their type).
-- --Guido van Rossum (home page: http://www.python.org/~guido/)