title: How to install multiple python version on Windows?
body: <p>I have already python <code>2.7.9</code> in <code>C:\Python27</code></p>
  
  <p>I try to install <a href="https://www.python.org/ftp/python/2.7.6/python-2.7.6.msi" rel="nofollow">python 2.7.6</a> from python.org on <code>C:\Python276</code></p>
  
  <p>And after the installation :</p>
  
  <ul>
  <li><code>C:\Python27\python.exe --version</code> return <code>Python 2.7.9</code></li>
  <li><code>C:\Python276\python.exe --version</code> return <code>Python 2.7.9</code></li>
  </ul>
  
  <p>Am I missing something ? </p>
  
  <p>How to install multiple python version on Windows 7 (Microsoft Windows [version 6.1.7601]) ?</p>