title: Installed Python Modules - Python can't find them
body: <p>This is a beginner <code>python</code> installation question.  This the first time I have tried to install and call a package.  I've got <code>pip</code> installed, and I tried to install two modules - <code>numpy</code> and <code>pandas</code>.  </p>
  
  <p>In terminal, I ran the following commands:</p>
  
  <pre><code>sudo pip install numpy
  
  sudo pip install pandas
  </code></pre>
  
  <p>Both commands returned with a success message.  Here is the <code>pandas</code> success message (it's the second package I installed and was still in my terminal history):</p>
  
  <pre><code>Successfully installed pandas
  Cleaning up...
  </code></pre>
  
  <p><code>pip</code> returned a similar message after <code>numpy</code> was installed.  </p>
  
  <p>Now, when I launch <code>python</code> and try to call it with:</p>
  
  <pre><code>import pandas
  </code></pre>
  
  <p>I get this error message:</p>
  
  <blockquote>
  <pre><code>Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
  ImportError: No module named pandas
  </code></pre>
  </blockquote>
  
  <p>Same when I try <code>numpy</code>.  </p>
  
  <p>Can anyone tell me what I'm doing incorrectly?  </p>