title: ImportError: libSM.so.6: cannot open shared object file: No such file or directory
body: <p>When trying to import OpenCV, using <code>import cv2</code> I get the following error:</p>
  
  <pre><code>/usr/local/lib/python2.7/dist-packages/cv2/__init__.py in &lt;module&gt;()
        7 
        8 # make IDE's (PyCharm) autocompletion happy
  ----&gt; 9 from .cv2 import *
       10 
       11 # wildcard import above does not import "private" variables like __version__
  
  ImportError: libSM.so.6: cannot open shared object file: No such file or directory
  </code></pre>
  
  <p>Not sure how to fix this - trying to play around with Google's new <a href="https://research.google.com/colaboratory/faq.html" rel="noreferrer">Colaboratory</a> tool. Notebook is here: <a href="https://drive.google.com/file/d/0B7-sJqBiyjCcRmFkMzl6cy1iN0k/view?usp=sharing" rel="noreferrer">https://drive.google.com/file/d/0B7-sJqBiyjCcRmFkMzl6cy1iN0k/view?usp=sharing</a></p>