jython base64.urlsafe_b64xxx

[py]

anyone know how to do perform the equivalent base64.urlsafe_b64encode
and base64.urlsafe_b64decode functions that Python has but in jython?
Jython comes with a base64 module but it does not have the urlsafe
functions.  Tried copying the pythhon base64.py to replace the Jython
one, and although it did perform the encode/decode it didnt seem to be
correctly decoded.


thanks