Nick Coghlan added the comment:

+1 for having the base __init__ API be the exception triple and then a 
TracebackException.from_exception() class method as an alternate constructor.

However, the redundancy between TracebackException.__init__() and 
TracebackException.from_exc_tuple() feels very strange to me. It leaves the 
__init__ working-but-undocumented and isn't a pattern I can recall seeing 
anywhere else in the standard library.

Would it be possible to just add the from_exception() class method and leave 
the documented (and only) API for building from a triple being the normal 
constructor call?

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue17911>
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