(Submitted by George Yoshida)
\item[(8)] \function{pop()} raises a \exception{KeyError} when no default
value is given and the key is not found. \versionadded{2.3}
-\end{description}
\item[(9)] \function{update()} accepts either another mapping object
or an iterable of key/value pairs (as a tuple or other iterable of
\versionchanged[Allowed the argument to be an iterable of key/value
pairs and allowed keyword arguments]{2.4}
+\end{description}
+
\subsection{File Objects
\label{bltin-file-objects}}