Common Python 2-3 Compatibility Fixes

py-six.py

# Some common idioms to make Python work both in version 2.7 and 3.x
# For more examples, see:
#   http://python-future.org/compatible_idioms.html

# Absolute import
from __future__ import absolute_import

# Floating point division
from __future__ import division

# Print function
from __future__ import print_function

# Unicode literals
from __future__ import unicode_literals