Collin Winter <collinw <at> gmail.com> writes: > > See PEP 3109: http://www.python.org/dev/peps/pep-3109/ By the way, this document mentions a "raise ... from ..." form, but it doesn't seem to me it has been implemented. Perhaps the document should be corrected? Also, it doesn't mention the with_traceback() method of exception objects. Antoine.