[issue24696] Don't use None as sentinel for traceback

Benjamin Peterson added the comment: 3.4 is out of bugfix support. -- nosy: +benjamin.peterson resolution: -> out of date stage: -> resolved status: open -> closed ___ Python tracker

[issue24696] Don't use None as sentinel for traceback

New submission from Adam Bartoš: There is a subtle bug in Python 3.4 implementation of traceback library: import traceback try: ... 1 / 0 ... except Exception as e: ... exc = e ... traceback.print_exception(exc.__class__, exc, exc.__traceback__) Traceback (most recent call last):