On Tue, 04 Sep 2012 08:57:00 -0700, Mathieu Courtois wrote: > Here is my example : > > > import cPickle > > ParentClass = object # works > ParentClass = Exception # does not [...] > 1. With ParentClass=object, it works as expected. > > 2. With ParentClass=Exception, __getstate__/__setstate__ are not called. > > Does anyone explain me why ?
I think it is a bug. According to the documentation, if your class is unpickleable, an exception should be raised. If it is pickleable, __getstate__ should be called. I can't see anything to explain that what you are seeing is expected behaviour. Exceptions should definitely be pickleable: http://bugs.python.org/issue1692335 so __getstate__ should be called. I think you should report this as a bug. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
