title: Cannot import cv2 on PyCharm
body: <p>I am trying to import <code>cv2</code> module in PyCharm, but it shows error.
  I tried in terminal as well</p>
  
  <pre><code>pip install opencv-python
  pip3 install cv2
  pip install opencv-python
  pip3 install cv2
  </code></pre>
  
  <p>and whatnot.</p>
  
  <p>Trying to install <code>opencv-python</code> from terminal shows this</p>
  
  <pre><code>Requirement already satisfied: opencv-python in ./anaconda3/lib/python3.6/site-packages (3.4.1.15)
  </code></pre>
  
  <p>and trying to install <code>cv2</code> from terminal shows this  </p>
  
  <pre><code>Could not find a version that satisfies the requirement cv2 (from versions: )
  No matching distribution found for cv2
  </code></pre>
  
  <p>However, trying to import <code>cv2</code> on Pycharm shows this :</p>
  
  <p>Pycharm Error Image</p>
  
  <p><img src="https://i.stack.imgur.com/VKFrp.png" alt=""></p>