title: How do I install Python 2.7.3 32 bit and 64 bit on Windows side by side
body: <p>I have Windows Vista 64.</p>
  
  <p>I have some projects requiring Python 2.7.3 64 bit and others requiring Python 2.7.3 32 bit (because some extensions do not work in 64 bit).</p>
  
  <p>How do I prevent the Python 2.7.3 MSI installer (32 or 64 bot) from deleting the other  version.</p>
  
  <p>Side by side worked for me with Python 2.7.2 without problems.</p>