Migrating python library to python 3.x

Having a library working under Python 2.X and Python 3.X is not easy.
Having unittest, doctest, scripts, documentation and packaging working under both Python 2.x and 3.x is a lot of work.

This is what I did with pyzmail.

A good way to start, is to use distribute to release your package.

Start by reading Supporting both Python 2 and Python 3 with Distribute.

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