Removed the API to create unbound methods and simplified the API for bound methods. The signature is PyMethod_New(func, instance).
Also removed im_class and renamed im_self to __self__ and im_func to __func__. im_class can be substituted with method.__self__.__class__.
I've also updated some parts of the documenation.
diff --git a/Doc/tutorial/classes.rst b/Doc/tutorial/classes.rst
index ef6498e..4e95419 100644
--- a/Doc/tutorial/classes.rst
+++ b/Doc/tutorial/classes.rst
@@ -576,8 +576,8 @@
.. % \code{sys.stdin} will not cause the interpreter to read further input
.. % from it.)
-Instance method objects have attributes, too: ``m.im_self`` is the instance
-object with the method :meth:`m`, and ``m.im_func`` is the function object
+Instance method objects have attributes, too: ``m.__self__`` is the instance
+object with the method :meth:`m`, and ``m.__func__`` is the function object
corresponding to the method.