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/lib/liboperator.tex b/Doc/lib/liboperator.tex
index 11e004a..41da9b7 100644
--- a/Doc/lib/liboperator.tex
+++ b/Doc/lib/liboperator.tex
@@ -171,6 +171,11 @@
 Return the bitwise exclusive or of \var{a} and \var{b}.
 \end{funcdesc}
 
+\begin{funcdesc}{index}{a}
+\funcline{__index__}{a}
+Return \var{a} converted to an integer.  Equivalent to \var{a}\code{.__index__()}.
+\versionadded{2.5}
+\end{funcdesc}
 
 Operations which work with sequences include: