title: Does `anaconda` create a separate PYTHONPATH variable for each new environment?
body: <p>I am starting to work with the Python Anaconda distribution from Continuum.io to do <code>scipy</code> work.<br>
  I have been able to get Anaconda up and running, but I cannot tell whether Anaconda creates a new <code>PYTHONPATH</code> environment variable <em>for each new environment it creates</em>, or whether it relies on the common system <code>PYTHONPATH</code>.   </p>
  
  <p>I could not find any information on this in the documentation.</p>
  
  <p>Further, when I did a <code>printenv</code>, I did not see a <code>PYTHONPATH</code> variable in the newly created environment --though I did find a few new anaconda created environment variables.  </p>
  
  <p>The best I can find is that Anaconda added some Anaconda directories and the new environment directory to the head of <code>PATH</code> variable --but this does not necessarily isolate the new package from the system environment but it is close. </p>
  
  <p>Does anyone know the answer to this question or found a way to deal with this concern?</p>