[Python-Dev] Proposed Mixins for Wide Interfaces

[Guido van Rossum]

> This is a spur-of-the-moment thought, so it might not be a
> reasonable comment, but do we care that all of these methods will
> show up in when using dir() or any other introspective check?  While
> I think the idea is great, it might give this sense that they are
> really, truly implemented for the class instead of reliant on the
> other implementations; the side effects of changing one of the
> required methods might have unexpected consequences for the user.

dir() *intends* to show methods regardless of whether they are
implemented in the class or in a base class.  So this doesn't sound
like a valid objection.  Pydoc shows inherited methods separately.

--Guido van Rossum (home page: http://www.python.org/~guido/)