SF feature request #686323: Minor array module enhancements
array.extend() now accepts iterable arguments implements as a series
of appends. Besides being a user convenience and matching the behavior
for lists, this the saves memory and cycles that would be used to
create a temporary array object.
diff --git a/Doc/lib/libarray.tex b/Doc/lib/libarray.tex
index 6ec056f..6fd8b0c 100644
--- a/Doc/lib/libarray.tex
+++ b/Doc/lib/libarray.tex
@@ -104,10 +104,13 @@
Return the number of occurences of \var{x} in the array.
\end{methoddesc}
-\begin{methoddesc}[array]{extend}{a}
-Append array items from \var{a} to the end of the array. The two
-arrays must have \emph{exactly} the same type code; if not,
-\exception{TypeError} will be raised.
+\begin{methoddesc}[array]{extend}{iterable}
+Append items from \var{iterable} to the end of the array. If
+\var{iterable} is another array, it must have \emph{exactly} the same
+type code; if not, \exception{TypeError} will be raised. If
+\var{iterable} is not an array, it must be iterable and its
+elements must be the right type to be appended to the array.
+\versionchanged[Formerly, the argument could only be another array]{2.4}
\end{methoddesc}
\begin{methoddesc}[array]{fromfile}{f, n}