[Python-Dev] PEP 344 (was: with_traceback)

Greg Ewing greg.ewing at canterbury.ac.nz
Sat Mar 3 05:12:04 CET 2007

Guido van Rossum wrote:
> Perhaps we could allow reraising whenever the
> existing traceback chain contains a reference to a frame that is an
> ancestor of (or equal to) the newly raising frame?

This is starting to sound terribly hairy.

Would it help if a different syntax were used for
raising and reraising? Raising would complain if
there were already a traceback, and reraising
would expect an existing traceback and extend


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