\bifuncindex: Fix so entries combine correctly with those of the built-in
functions section.
diff --git a/Doc/texinputs/python.sty b/Doc/texinputs/python.sty
index 724fba7..ad3e4a7 100644
--- a/Doc/texinputs/python.sty
+++ b/Doc/texinputs/python.sty
@@ -269,7 +269,7 @@
\newcommand{\opindex}[1]{\indexii{operator}{#1@{\idxcode{#1}}}}
\newcommand{\exindex}[1]{\indexii{exception}{#1@{\idxcode{#1}}}}
\newcommand{\obindex}[1]{\indexii{object}{#1}}
-\newcommand{\bifuncindex}[1]{\index{#1@{\idxcode{#1()}} (built-in function)}}
+\newcommand{\bifuncindex}[1]{\withsubitem{(built-in function)}{\ttindex{#1()}}}
% Add an index entry for a module
\newcommand{\refmodule}[2]{\index{#1@{\idxcode{#1}} (#2module)}}