print function
fix pep8 and invalid syntax
the new  syntax
six
six.moves.xrange
six.iteritems
octal to decimal
pep8
OrderedDict
Merge branch 'master' into python3
print function
docstring
next
miscellanies
first_key, first_value
docstring
test for python 3
Fix VAE tests failing when ran from the models/tests directory
Merge pull request #1242 from vdumoulin/fix_vae_tests

Fix VAE tests failing when ran from the models/tests directory (#1241)
Merge pull request #1240 from euphoris/python3

Supporting for Python 2 and 3 with the same code base