Clarify that the bool instances are acceptable return values from
__nonzero__(), in response to SF bug #579991.
diff --git a/Doc/lib/libstdtypes.tex b/Doc/lib/libstdtypes.tex
index 5caefb3..d3e0079 100644
--- a/Doc/lib/libstdtypes.tex
+++ b/Doc/lib/libstdtypes.tex
@@ -33,10 +33,10 @@
\begin{itemize}
\item \code{None}
- \withsubitem{(Built-in object)}{\ttindex{None}}
+ \withsubitem{(Built-in object)}{\ttindex{None}}
\item \code{False}
- \withsubitem{(Built-in object)}{\ttindex{False}}
+ \withsubitem{(Built-in object)}{\ttindex{False}}
\item zero of any numeric type, for example, \code{0}, \code{0L},
\code{0.0}, \code{0j}.
@@ -46,8 +46,9 @@
\item any empty mapping, for example, \code{\{\}}.
\item instances of user-defined classes, if the class defines a
- \method{__nonzero__()} or \method{__len__()} method, when that
- method returns the integer zero.\footnote{Additional
+ \method{__nonzero__()} or \method{__len__()} method, when that
+ method returns the integer zero or \class{bool} value
+ \code{False}.\footnote{Additional
information on these special methods may be found in the
\citetitle[../ref/ref.html]{Python Reference Manual}.}