title: error: unexpected exception No module named pydevd
body: <p>I am trying to use PyDev with Eclipse. However when i start to debug my code, i get this No module found error.</p>
  
  <p>My code is </p>
  
  <pre><code>global _initialized, _path, _version
  # ADD THE FOLLOWING TO LINES WHERE YOU WANT TO BREAK
  import pydevd
  pydevd.settrace('localhost', port=5678)
  # execution will stop at this line    
  if _initialized and _path != path and _version != version:
      ERROR_HANDLER('Attempt to reconfigure with different path')
  </code></pre>
  
  <p>The error I get is </p>
  
  <pre><code>error: unexpected exception
      No module named pydevd
  </code></pre>
  
  <p>Sorry, I am new to Eclipse and only working on python for 2 months. Please let me know if more information is needed.</p>