Backport from Py3k: Bug #1684991: explain lookup semantics for __special__ methods (new-style classes only).
Backport from Py3k: Bug #1684991: explain lookup semantics for __special__ methods (new-style classes only).

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator