Python "Monkey Typing"

I guess the record wouldn't be complete without mentioning this proposal,

This PEP proposes an extension to "duck typing" called "monkey typing", that preserves most of the benefits of duck typing, while adding new features to enhance inter-library and inter-framework compatibility. The name comes from the saying, "Monkey see, monkey do", because monkey typing works by stating how one object type may mimic specific behaviors of another object type.

More here and here (from Guido).