[Python-Dev] with_traceback (original) (raw)

Greg Ewing greg.ewing at canterbury.ac.nz
Thu Mar 1 09:32:19 CET 2007

Michael Foord wrote:

With the proposed changes, modules that do this would continue to work, surely ?

Probably, but it might mean they were no longer thread safe. An exception caught and raised in one thread would be vulnerable to having its traceback clobbered by another thread raising the same instance.

There's also the possibility of a traceback unexpectedly kept alive causing GC problems -- cycles, files not closed when you expect, etc.

-- Greg

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