diff -r d9c4641be70a src/org/python/core/PyByteArray.java
--- a/src/org/python/core/PyByteArray.java      Sat May 10 23:44:28 2014
+++ b/src/org/python/core/PyByteArray.java      Mon May 12 06:09:58 2014
@@ -1466,7 +1466,7 @@

     @ExposedMethod(doc =3D BuiltinDocs.bytearray___len___doc)
     final int bytearray___len__() {
-        return __len__();
+        return super.__len__();
     }

     /**