As discussed on python-dev, revised docs to note that
PyObject_IsTrue() can have an error result.
Also, added missing docs for PyObject_Not().
Will backport.
diff --git a/Doc/api/abstract.tex b/Doc/api/abstract.tex
index 1d87c05..dd23768 100644
--- a/Doc/api/abstract.tex
+++ b/Doc/api/abstract.tex
@@ -310,7 +310,14 @@
\begin{cfuncdesc}{int}{PyObject_IsTrue}{PyObject *o}
Returns \code{1} if the object \var{o} is considered to be true, and
\code{0} otherwise. This is equivalent to the Python expression
- \samp{not not \var{o}}. This function always succeeds.
+ \samp{not not \var{o}}. On failure, return \code{-1}.
+\end{cfuncdesc}
+
+
+\begin{cfuncdesc}{int}{PyObject_Not}{PyObject *o}
+ Returns \code{0} if the object \var{o} is considered to be true, and
+ \code{1} otherwise. This is equivalent to the Python expression
+ \samp{not \var{o}}. On failure, return \code{-1}.
\end{cfuncdesc}