title: google colab python3 name cv2 is not defined
body: <p>I imported all the required libraries and tried to do a simple image reconginition program with opencv but the error cv2 not defined shows up but as it is visible from the first cell that open cv is installed and no import errors are shown as I have already done the !apt updates and the version I have is 3.4.0. Any help on the program attached below would be appreciated. Thanks in advance.</p>
  
  <p><a href="https://i.stack.imgur.com/1ZPh0.png" rel="noreferrer"><img src="https://i.stack.imgur.com/1ZPh0.png" alt="enter image description here"></a></p>