cfuncdesc environment:
When processing the optional parameter, don't append any text;
let the pre-processor supply all of it.
diff --git a/Doc/texinputs/python.sty b/Doc/texinputs/python.sty
index 3ec42c5..3f0370a 100644
--- a/Doc/texinputs/python.sty
+++ b/Doc/texinputs/python.sty
@@ -545,7 +545,7 @@
\begin{fulllineitems}
\item[\code{#2 \bfcode{#3}(\py@varvars{#4})}\index{#3@{\py@idxcode{#3()}}}]
\ifx#1\@undefined\else%
- \emph{Return value: \textbf{#1 reference}.}\\
+ \emph{Return value: \textbf{#1}.}\\
\fi
}{\end{fulllineitems}}