python3-u-msgpack 2.3.0-3 (amd64 binary) in ubuntu kinetic

 A lightweight MessagePack serializer and deserializer module written in pure
 Python, compatible with both Python 2 and Python 3, as well as CPython and
 PyPy implementations of Python. u-msgpack-python is fully compliant with the
 latest MessagePack specification. In particular, it supports the new binary,
 UTF-8 string, and application-defined ext types.
 .
 This is the Python 3 package.