diff -r d9c4641be70a src/org/python/core/PyByteArray.java
--- a/src/org/python/core/PyByteArray.java	Sat May 10 23:44:28 2014 -0600
+++ b/src/org/python/core/PyByteArray.java	Mon May 12 21:09:21 2014 +1000
@@ -1466,7 +1466,7 @@
 
     @ExposedMethod(doc = BuiltinDocs.bytearray___len___doc)
     final int bytearray___len__() {
-        return __len__();
+        return super.__len__();
     }
 
     /**