Peter Otten wrote: > Saul Spatz wrote: > >> Now I have another question. If dunder methods are looked up only in the >> class, not the instance, why did defining __nonzero__ the way I did work? >> Shouldn't I have had to define it with a def? Is __nonzero__ a special >> case? > > Unfortunately the situation is a bit more complex. Classic classes (like > Tkinter.Frame) behave differently from newstyle classes (subclasses of > object): [...] > So Steven is wrong here.
Peter is correct -- I've been using Python 3 too much, and completely forgot about old-style classic classes, which only exist in Python 2. Sorry for any confusion. Nevertheless, everything I said about dunder methods applies to "new style" classes in Python 2, and all classes in Python 3. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
