[Python-Dev] Chained Exceptions
Guido van Rossum
gvanrossum at gmail.com
Fri May 13 01:12:35 CEST 2005
> Suppose exceptions have an optional "context" attribute, which is
> set when the exception is raised in the context of handling another
> exception. Thus:
> def a():
> raise AError
> raise BError
> yields an exception which is an instance of BError. This instance
> would have as its "context" attribute an instance of AError.
I like the idea, but I'm not sure about the consequences, and I'm not
sure how it can be defined rigorously. Would it only happen when
something *in* an except clause raises an exception? Which piece of
code would be responsible for doing this?
Try to come up with a precise specification and we'll talk.
--Guido van Rossum (home page: http://www.python.org/~guido/)
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