Python3 added exception chaining. Under python2 you only get the useful stacktrace but with python3 you get the internal one too.
At present there isn't a method for suppressing this. There's a proposal for adding suppression but it isn't yet merged, and even after it is this will be an ongoing annoyance for python 3.x before the addition.
Migrated from ticket 16348.
Python3 added exception chaining. Under python2 you only get the useful stacktrace but with python3 you get the internal one too.
At present there isn't a method for suppressing this. There's a proposal for adding suppression but it isn't yet merged, and even after it is this will be an ongoing annoyance for python 3.x before the addition.