title: How to force Sphinx to use Python 3.x interpreter
body: <p>I try to create documentation for a project written with Python 3.x. <a href="http://sphinx.pocoo.org/index.html" rel="noreferrer">Sphinx</a> is <em>the</em> tool I want to use and, according to the <a href="http://sphinx.pocoo.org/changes.html" rel="noreferrer">official site</a>, its last version 1.1.2 is compatible with <a href="http://sphinx.pocoo.org/changes.html" rel="noreferrer">Python 3.1+</a>. My OS is Archlinux, a Linux distribution which uses Python 3.2+ as the default Python package.</p>
  
  <p>The installation and configuration is straight forward (<code>easy_install -U Sphinx</code> then <code>sphinx-quickinstall</code>) and I was never asked to choose between the 2.x or 3.x Python interpreter. But when I ask Sphinx to create the documentation of my project, my code is analyzed as if I wrote it for Python 2.x.</p>
  
  <p>Is Sphinx ready for Python 3.x? Did I make a mistake?</p>