Index: Modules/posixmodule.c
===================================================================
--- Modules/posixmodule.c	(Revision 64203)
+++ Modules/posixmodule.c	(Arbeitskopie)
@@ -1192,6 +1192,42 @@
 	10
 };
 
+
+static PyObject *
+stat_result_isdir(PyStructSequence *self, PyObject *unused)
+{
+	PyObject *mode = self->ob_item[0];
+	if (!PyLong_Check(mode)) {
+		Py_RETURN_FALSE;
+	}
+	return PyBool_FromLong(S_ISDIR(PyLong_AS_LONG(mode)));
+}
+
+static PyMethodDef stat_result_methods[] = {
+	{"isdir", (PyCFunction)stat_result_isdir, METH_NOARGS, NULL},
+	{NULL, NULL}
+};
+
+
+/* Adapted from typeobject.c, used to add methods to a struct sequence. */
+static int
+add_methods_to_type(PyTypeObject *type, PyMethodDef *meth)
+{
+	PyObject *dict = type->tp_dict;
+
+	for (; meth->ml_name != NULL; meth++) {
+		PyObject *descr;
+		descr = PyDescr_NewMethod(type, meth);
+		if (descr == NULL)
+			return -1;
+		if (PyDict_SetItemString(dict, meth->ml_name, descr) < 0)
+			return -1;
+		Py_DECREF(descr);
+	}
+	return 0;
+}
+
+
 PyDoc_STRVAR(statvfs_result__doc__,
 "statvfs_result: Result from statvfs or fstatvfs.\n\n\
 This object may be accessed either as a tuple of\n\
@@ -7389,6 +7425,7 @@
 		PyStructSequence_InitType(&StatResultType, &stat_result_desc);
 		structseq_new = StatResultType.tp_new;
 		StatResultType.tp_new = statresult_new;
+		add_methods_to_type(&StatResultType, stat_result_methods);
 
 		statvfs_result_desc.name = MODNAME ".statvfs_result";
 		PyStructSequence_InitType(&StatVFSResultType, &statvfs_result_desc);