title: Installed Python 3 on Mac OS X but its still Python 2.7
body: <p>I am currently running OS X Yosemite (10.10.2) on my MacBook Pro... By default, Apple ships Python 2.7.6 on Yosemite. </p>
  
  <p>Just downloaded and ran this installer for Python 3: <code>python-3.4.3-macosx10.6.pkg</code></p>
  
  <p>When I opened up my Terminal and typed in <code>python</code>, this is what came up:</p>
  
  <pre><code>Python 2.7.6 (default, Sep  9 2014, 15:04:36) 
  [GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.39)] on darwin
  Type "help", "copyright", "credits" or "license" for more information.
  &gt;&gt;&gt;
  </code></pre>
  
  <p>Question(s):</p>
  
  <ol>
  <li>Does anyone know where the Python 3.4.3 interpreter was installed? </li>
  <li>Do I need to uninstall Python 2.7.3 (if so, how do I go about doing this) before setting a global environmental variable such as PYTHON_HOME to the location of the installed Python 3.4.3?</li>
  </ol>