Roundup Robot added the comment:
New changeset b27352f87404 by Nick Coghlan in branch 'default':
Close #20105: set __traceback__ when chaining exceptions in C
http://hg.python.org/cpython/rev/b27352f87404
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nosy: +python-dev
resolution: -> fixed
stage: test needed -> committed/rejected
New submission from Nick Coghlan:
The exception chaining in the codecs subsystem is currently losing the details
of the original traceback.
Compare this traceback from Python 3.3:
>>> codecs.decode(b"abcdefgh", "hex_codec")
Traceback (most recent call last):
File "", line 1, in
File "/usr
