Merged revisions 67326,67498,67531-67532,67538,67553-67554,67556-67557 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r67326 | benjamin.peterson | 2008-11-22 02:59:15 +0100 (Sat, 22 Nov 2008) | 1 line

  backport r67325: make FileIO.mode always contain 'b'
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  r67498 | raymond.hettinger | 2008-12-03 16:42:10 +0100 (Wed, 03 Dec 2008) | 1 line

  Backport r67478
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  r67531 | georg.brandl | 2008-12-04 19:54:05 +0100 (Thu, 04 Dec 2008) | 2 lines

  Add reference to enumerate() to indices example.
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  r67532 | georg.brandl | 2008-12-04 19:59:16 +0100 (Thu, 04 Dec 2008) | 2 lines

  Add another heapq example.
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  r67538 | georg.brandl | 2008-12-04 22:28:16 +0100 (Thu, 04 Dec 2008) | 2 lines

  Clarification to avoid confusing output with file descriptors.
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  r67553 | georg.brandl | 2008-12-05 08:49:49 +0100 (Fri, 05 Dec 2008) | 2 lines

  #4408: document regex.groups.
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  r67554 | georg.brandl | 2008-12-05 08:52:26 +0100 (Fri, 05 Dec 2008) | 2 lines

  #4409: fix asterisks looking like footnotes.
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  r67556 | georg.brandl | 2008-12-05 09:02:17 +0100 (Fri, 05 Dec 2008) | 2 lines

  #4441: improve doc for os.open() flags.
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  r67557 | georg.brandl | 2008-12-05 09:06:57 +0100 (Fri, 05 Dec 2008) | 2 lines

  Add an index entry for "subclassing immutable types".
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diff --git a/Objects/listobject.c b/Objects/listobject.c
index e8379e1..7b4bf35 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -2911,11 +2911,11 @@
 static void listreviter_dealloc(listreviterobject *);
 static int listreviter_traverse(listreviterobject *, visitproc, void *);
 static PyObject *listreviter_next(listreviterobject *);
-static Py_ssize_t listreviter_len(listreviterobject *);
+static PyObject *listreviter_len(listreviterobject *);
 
-static PySequenceMethods listreviter_as_sequence = {
-	(lenfunc)listreviter_len,	/* sq_length */
-	0,				/* sq_concat */
+static PyMethodDef listreviter_methods[] = {
+	{"__length_hint__", (PyCFunction)listreviter_len, METH_NOARGS, length_hint_doc},
+ 	{NULL,		NULL}		/* sentinel */
 };
 
 PyTypeObject PyListRevIter_Type = {
@@ -2931,7 +2931,7 @@
 	0,					/* tp_compare */
 	0,					/* tp_repr */
 	0,					/* tp_as_number */
-	&listreviter_as_sequence,		/* tp_as_sequence */
+	0,					/* tp_as_sequence */
 	0,					/* tp_as_mapping */
 	0,					/* tp_hash */
 	0,					/* tp_call */
@@ -2947,6 +2947,7 @@
 	0,					/* tp_weaklistoffset */
 	PyObject_SelfIter,			/* tp_iter */
 	(iternextfunc)listreviter_next,		/* tp_iternext */
+	listreviter_methods,		/* tp_methods */
 	0,
 };
 
@@ -3002,11 +3003,11 @@
 	return NULL;
 }
 
-static Py_ssize_t
+static PyObject *
 listreviter_len(listreviterobject *it)
 {
 	Py_ssize_t len = it->it_index + 1;
 	if (it->it_seq == NULL || PyList_GET_SIZE(it->it_seq) < len)
-		return 0;
-	return len;
+		len = 0;
+	return PyLong_FromSsize_t(len);
 }