In this video tutorial I look to the production of a Digital clock using tkinter with an Object Oriented Python program. As part of the explanation in this video I compare the object oriented solution to the procedural code solution shown the previous video in the tkinter playlist. Below are the links to the videos referenced in this video tutorial: Link to the previous video that contains the procedural code: https://youtu.be/0I97O2p-4Tc Link to the Python parameter passing mechanism: https://youtu.be/hDmnu1qGfkw Link to the videos that look at the self parameter in Python: https://youtu.be/B8NDKzCl0Mc https://youtu.be/BhBeVfrMh_g https://youtu.be/y3RndPl0gA8 https://youtu.be/2a-WeQMZMLg