[Python-Dev] Evil reference cycles caused Exception.__traceback__

Antoine Pitrou antoine at python.org
Mon Sep 18 10:56:22 EDT 2017

Le 18/09/2017 à 16:52, Guido van Rossum a écrit :
> In Python 2 the traceback was not part of the exception object because
> there was (originally) no cycle GC. In Python GC we changed the awkward
> interface to something more useful, because we could depend on GC. Why
> are we now trying to roll back this feature? We should just improve GC.
> (Or perhaps you shouldn't be raising so many exceptions. :-)

Improving the GC is obviously a good thing, but what heuristic would you
have in mind that may solve the issue at hand?



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