title: Using Enthought Python instead of the system Python
body: <p>I've installed the <a href="http://enthought.com/products/epd.php" rel="noreferrer">Enthought Python Distribution</a>, which is basically a glorified Python distribution with added libraries for numerical and scientific computing. Now, since I use Debian, there is Python installed already. If I wish to use the Enthought Python for all work, how would I go about doing that? </p>
  
  <p>Right now I am using a rudimentary alias like:</p>
  
  <pre><code>alias python='/usr/local/share/enthought/bin/python'
  </code></pre>
  
  <p>This is fine, but fails for shebang directives like <code>#! /usr/bin/env python</code> in independent Python scripts. So how do I get the system to use Enthought Python (without breaking anything of course!). Thanks!</p>