Index: datetimemodule.c
===================================================================
--- datetimemodule.c	(revision 62827)
+++ datetimemodule.c	(working copy)
@@ -1756,6 +1756,9 @@
 	else if (op == Py_EQ || op == Py_NE)
 		diff = 1;	/* any non-zero value will do */
 
+	else if (other == Py_None)
+		diff = -1;	/* None value will do */
+
 	else /* stop this from falling back to address comparison */
 		return cmperror((PyObject *)self, other);
 
@@ -2578,6 +2581,9 @@
 	else if (op == Py_EQ || op == Py_NE)
 		diff = 1;	/* any non-zero value will do */
 
+	else if (other == Py_None)
+		diff = -1;	/* None value will do */
+
 	else /* stop this from falling back to address comparison */
 		return cmperror((PyObject *)self, other);
 
@@ -3298,6 +3304,10 @@
 	int offset1, offset2;
 
 	if (! PyTime_Check(other)) {
+                
+		if (other == Py_None)
+			return diff_to_bool(-1, op); /* None value will do */
+
 		if (op == Py_EQ || op == Py_NE) {
 			PyObject *result = op == Py_EQ ? Py_False : Py_True;
 			Py_INCREF(result);
@@ -4236,6 +4246,9 @@
 		 * (it's the more specific subtype).  So we can stop that
 		 * combination here reliably.
 		 */
+		if (other == Py_None)
+			return diff_to_bool(-1, op); /* None value will do */
+
 		if (PyObject_HasAttrString(other, "timetuple") &&
 		    ! PyDate_Check(other)) {
 			/* A hook for other kinds of datetime objects. */