[Python-Dev] GeneratorExit inheriting from Exception (original) (raw)

Guido van Rossum guido at python.org
Mon Mar 20 04🔞59 CET 2006

On 3/19/06, Greg Ewing <greg.ewing at canterbury.ac.nz> 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/)

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