OK, once the cron job comes around and is run, http://www.python.org/peps/pep-0348.html will not be a 404 but be the latest version of the PEP. Differences since my last public version is that it has BaseException/Exception as the naming hierarchy, Warning inherits from Exception, UserException is UserError, and StandardError inherits from Exception. I also added better annotations on the tree for noticing where inheritance changed and whether it become broader (and thus had a new exception in its MRO) or more restrictive (and thus lost an exception). Basically everything that Guido has brought up today (08-03). I may have made some mistakes changing over to BaseException/Exception thanks to their names being so similar and tossing back in StandardError so if people catch what seems like odd sentences that is why (obviously let me know of the mistake). -Brett