Alfred Krohmer added the comment: Can you elaborate what QtClass and QtMeta is in your case?
My original example was reduced to a minimal case and seems to work with your suggestions. The complete example involving SQLalchemy is here: http://stackoverflow.com/questions/28032928/sqlalchemy-multiple-base-classes-not-working and does, however, not work. If I try to do # ... def __setattr__(cls, key, value): super(type(QMediaPlaylist), cls).__setattr__(cls, key, value) return The program segfaults when instantiating the Playlist class. However, this approach seems a little bit strange to me anyhow. The same happens when I try to do: # ... def __setattr__(cls, key, value): super(type(base), cls).__setattr__(cls, key, value) return I think that comes from PyQt specific attributes SQLalchemy is trying to set / replace. So, coming back to the original question, how can I actually set an attribute of my class Playlist from within its metaclass without involving the parent classes of the subclass (type(base) and type(QMediaPlaylist))? Because the __setattr__ from PyQt won't work (segfault) and the one from SQLalchemy does stupid stuff. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue23276> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
