diff -r a3f2dba93743 Python/ast.c
--- a/Python/ast.c	Mon Oct 03 07:27:06 2011 +0800
+++ b/Python/ast.c	Sat Oct 08 13:03:14 2011 +0800
@@ -109,6 +109,8 @@
         return;
 
     PyErr_Fetch(&type, &value, &tback);
+	if (!PyTuple_Check(value))
+		value = PyObject_GetAttrString(value, "args"); 
     errstr = PyTuple_GetItem(value, 0);
     if (!errstr)
         return;