title: Scikit-learn installed but not found,
body: <p>I have already installed scipy, numpy and scikit-learn but when I'm on python shell I can't import sklearn, it says there's no module with that name:</p>
  
  <pre><code>Requirement already up-to-date: numpy in .../lib/python2.7/site-packages
  Requirement already up-to-date: scipy in .../site-packages
  Requirement already up-to-date: scikit-learn in ...7/site-packages
  
  &gt;&gt;&gt; import sklearn
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
  ImportError: No module named sklearn
  </code></pre>
  
  <p>What could be the problem?</p>