title: Jupyter Notebook can not import cv2
body: <p>I am new to Jupyter Notebook and I was following a youtube tutorial. Currently I am using Jupyter Notebook in the browser version. In the first line of the code (from the youtube video) it asked me to import cv2. After I run it, it shows this error</p>
  
  <hr>
  
  <blockquote>
    <p>ModuleNotFoundError                       Traceback (most recent call
    last)  in 
          1 
    ----> 2 import cv2</p>
    
    <p>ModuleNotFoundError: No module named 'cv2'</p>
  </blockquote>
  
  <p>Can anyone let me know what is my mistake and how can I solve it?
  Thankyou so much</p>