Move the change to ending the abstract from python.sty to manual.cls; it

is not appropriate for the howto document class.

Doc/manual.cls

@@ -75,6 +75,20 @@
 }
 
 
+% Catch the end of the {abstract} environment, but here make sure the
+% abstract is followed by a blank page if the 'openright' option is used.
+%
+\let\OldEndAbstract=\endabstract
+\renewcommand{\endabstract}{
+  \if@openright
+    \ifodd\value{page}
+      \typeout{Adding blank page after the abstract.}
+      \vfil\pagebreak
+    \fi
+  \fi
+  \OldEndAbstract
+}
+
 % This wraps the \tableofcontents macro with all the magic to get the
 % spacing right and have the right number of pages if the 'openright'
 % option has been used.  This eliminates a fair amount of crud in the

Doc/python.sty

@@ -515,21 +515,6 @@
   \addcontentsline{toc}{chapter}{\indexname}
 }
 
-%  Use a similar trick to catch the end of the {abstract} environment,
-%  but here make sure the abstract is followed by a blank page if the
-% 'openright' option is used.
-%
-\let\OldEndAbstract=\endabstract
-\renewcommand{\endabstract}{
-  \if@openright
-    \ifodd\value{page}
-      \typeout{Adding blank page after the abstract.}
-      \vfil\pagebreak
-    \fi
-  \fi
-  \OldEndAbstract
-}
-
 % Allow the release number to be specified independently of the
 % \date{}.  This allows the date to reflect the document's date and
 % release to specify the Python release that is documented.

Doc/texinputs/manual.cls

@@ -75,6 +75,20 @@
 }
 
 
+% Catch the end of the {abstract} environment, but here make sure the
+% abstract is followed by a blank page if the 'openright' option is used.
+%
+\let\OldEndAbstract=\endabstract
+\renewcommand{\endabstract}{
+  \if@openright
+    \ifodd\value{page}
+      \typeout{Adding blank page after the abstract.}
+      \vfil\pagebreak
+    \fi
+  \fi
+  \OldEndAbstract
+}
+
 % This wraps the \tableofcontents macro with all the magic to get the
 % spacing right and have the right number of pages if the 'openright'
 % option has been used.  This eliminates a fair amount of crud in the

Doc/texinputs/python.sty

@@ -515,21 +515,6 @@
   \addcontentsline{toc}{chapter}{\indexname}
 }
 
-%  Use a similar trick to catch the end of the {abstract} environment,
-%  but here make sure the abstract is followed by a blank page if the
-% 'openright' option is used.
-%
-\let\OldEndAbstract=\endabstract
-\renewcommand{\endabstract}{
-  \if@openright
-    \ifodd\value{page}
-      \typeout{Adding blank page after the abstract.}
-      \vfil\pagebreak
-    \fi
-  \fi
-  \OldEndAbstract
-}
-
 % Allow the release number to be specified independently of the
 % \date{}.  This allows the date to reflect the document's date and
 % release to specify the Python release that is documented.