Python: Pickle in Python2 and Python3

The python3 pickle.load() function has optional keyword arguments that can be used to control compatibility support for pickle stream generated by Python 2:

• If fix_imports is True, pickle will try to map the old Python 2 names to the new names used in Python 3.
• The encoding and errors tell pickle how to decode 8-bit string instances pickled by Python 2.

Via SO.