Thomas Heller wrote: > I forgot to mention this: The Base class also implements a __getitem__ > method which should be used for iteration if the .Iterator method in > the subclass is not available. So it seems impossible to raise an > exception in the __iter__ method if .Iterator is not found - __iter__ > MUST return an iterator if present.
Again, why not just let subclasses implement __iter__? Calling iter() on an instance of the base class (or any subclass that does not implement __iter__) will return an iterator that uses __getitem__. Calling iter() on a subclass instance that does implement __iter__ will return the iterator from the subclass __iter__. Tim Delaney -- http://mail.python.org/mailman/listinfo/python-list
