\versionchanged: Added optional parameter for explanation of change.
diff --git a/Doc/texinputs/python.sty b/Doc/texinputs/python.sty
index ded500d..c2a66d6 100644
--- a/Doc/texinputs/python.sty
+++ b/Doc/texinputs/python.sty
@@ -838,11 +838,17 @@
%
% Example:
% \versionadded{1.5.2}
+% \versionchanged[short explanation]{1.6}
%
\newcommand{\versionadded}[1]{%
{ New in version #1. }}
-\newcommand{\versionchanged}[1]{%
- { Changed in version #1. }}
+\newcommand{\versionchanged}[2][\py@badkey]{%
+ \ifx#1\@undefined%
+ { Changed in version #2. }%
+ \else%
+ { Changed in version #2:\ #1. }%
+ \fi%
+}
% Tables.