title: What is the deal with `pip install opencv-python` is it a full opencv?
body: <p>I thought the quickest way to get opencv running in my environment would be as simple as.</p>
  
  <pre><code>sudo pip install opencv-python
  </code></pre>
  
  <p>It seemed to work properly, I could import </p>
  
  <pre><code>import cv2
  img = cv2.imread("a.jpg", 0)
  </code></pre>
  
  <p>but any other functions as "cv2.SURF" or even "cv2.imshow" are not loaded. So the pip install is giving just a basic opencv?</p>