I'll just leave these here: http://www.python.org/dev/peps/pep-0428/ http://www.python.org/dev/peps/pep-0428/ http://www.python.org/dev/peps/pep-0431/ http://

I'll just leave these here: http://www.python.org/dev/peps/pep-0428/ http://www.python.org/dev/peps/pep-0428/ http://www.python.org/dev/peps/pep-0431/ http://www.python.org/dev/peps/pep-0431/