Checking in the code for PEP 357.
This was mostly written by Travis Oliphant.
I've inspected it all; Neal Norwitz and MvL have also looked at it
(in an earlier incarnation).
diff --git a/Doc/ref/ref3.tex b/Doc/ref/ref3.tex
index 5b78f1c..737b861 100644
--- a/Doc/ref/ref3.tex
+++ b/Doc/ref/ref3.tex
@@ -1978,6 +1978,13 @@
\function{hex()}\bifuncindex{hex}. Should return a string value.
\end{methoddesc}
+\begin{methoddesc}[numeric object]{__index__}{self}
+Called to implement operator.index(). Also called whenever Python
+needs an integer object (such as in slicing). Must return an integer
+(int or long).
+\versionadded{2.5}
+\end{methoddesc}
+
\begin{methoddesc}[numeric object]{__coerce__}{self, other}
Called to implement ``mixed-mode'' numeric arithmetic. Should either
return a 2-tuple containing \var{self} and \var{other} converted to