title: Pydev say, "Unresolved import" error
body: <p>hm..
  Sometime, PyDev say "Unresolved import error".
  In my environment</p>
  
  <blockquote>
    <p>Python2.6.6 Eclipse3.7 PyDev2.2.2</p>
  </blockquote>
  
  <p>Errors are.</p>
  
  <pre><code>&gt; Unresolved import: pycassa  -&gt; import pycassa Unresolved import:
  &gt; WebSocketHandler  -&gt; from geventwebsocket.handler import
  &gt; WebSocketHandler Unresolved import: tweepy  -&gt; import tweepy
  </code></pre>
  
  <p>Is there any helpfull information?</p>