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<H1><A NAME="SECTION007100000000000000000"></A>
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5.1 OS Utilities 
</H1>

<P>
<dl><dt>int <b><a name="l2h-44"><tt class=cfunction>Py_FdIsInteractive</tt></a></b> (<var>FILE *fp, char *filename</var>)
<dd>
Return true (nonzero) if the standard I/O file <var>fp</var> with name
<var>filename</var> is deemed interactive.  This is the case for files for
which "<tt class=samp>isatty(fileno(<var>fp</var>))</tt>" is true.  If the global flag
<tt class=cdata>Py_InteractiveFlag</tt> is true, this function also returns true if
the <var>name</var> pointer is <tt>NULL</tt> or if the name is equal to one of
the strings <tt>"&lt;stdin&gt;"</tt> or <tt>"???"</tt>.
</dl>

<P>
<dl><dt>long <b><a name="l2h-45"><tt class=cfunction>PyOS_GetLastModificationTime</tt></a></b> (<var>char *filename</var>)
<dd>
Return the time of last modification of the file <var>filename</var>.
The result is encoded in the same way as the timestamp returned by
the standard C library function <tt class=cfunction>time()</tt>.
</dl>

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