On Sat, May 28, 2011 at 4:31 AM, Ian Kelly <ian.g.ke...@gmail.com> wrote: > It seems to me that the example of combining built-in dictionary > classes is naively optimistic.
So... Can anyone offer a non-trivial example of multiple inheritance that *doesn't* have pitfalls? From what I've seen, MI always seems to require cooperation from the authors of all involved classes. It may be a useful tool when you control everything, but whenever you use someone else's code, there seems to be this massive barrier of risk (if that makes sense). For the DefaultOrderedCounter, I would be strongly inclined to inherit singly, and then manually implement the other half (whichever half is easier); in this case that happens to be trivial (override __missing__), but even were it not, it would be a means of being certain that things won't break. Chris Angelico -- http://mail.python.org/mailman/listinfo/python-list
