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@@ -1419,6 +1419,13 @@ failure. This is the equivalent of the Python statement \samp{del
\var{o}[\var{key}]}.
\end{cfuncdesc}
+\begin{cfuncdesc}{int}{PyObject_AsFileDescriptor}{PyObject *o}
+Derives a file-descriptor from a Python object. If the object
+is an integer or long integer, its value is returned. If not, the
+object's \method{fileno()} method is called if it exists; the method
+must return an integer or long integer, which is returned as the file
+descriptor value. Returns \code{-1} on failure.
+\end{cfuncdesc}
\section{Number Protocol \label{number}}