Data attributes of objects should not be indexed with trailing parentheses!
diff --git a/Doc/texinputs/python.sty b/Doc/texinputs/python.sty
index bee22d5..c58a55b 100644
--- a/Doc/texinputs/python.sty
+++ b/Doc/texinputs/python.sty
@@ -424,10 +424,10 @@
 \newcommand{\memberline}[2][\@classbadkey]{%
   \ifx#1\@undefined
     \memberlineni{#2}
-    \withsubitem{(\@thisclass\ attribute)}{\ttindex{#2()}}
+    \withsubitem{(\@thisclass\ attribute)}{\ttindex{#2}}
   \else
     \memberlineni{#2}
-    \withsubitem{(#1 attribute)}{\ttindex{#2()}}
+    \withsubitem{(#1 attribute)}{\ttindex{#2}}
   \fi
 }
 \newenvironment{memberdesc}[2][\@classbadkey]{