Combining Python Conditional Statements and Functions Exercise

Hi wahab!
Thanks for reaching out.
The lecture notes are common for the entire introduction to Python. You can download them from the link provided at the bottom of this lecture: https://learn.365datascience.com/courses/introduction-to-python/course-introduction If you mean that there's no slide for that particular lecture - thank you very much for pointing this out. We will think of adding a slide when making an update.
Nevertheless, the best source for reference, we believe, is the code provided with the lectures. And in the lecture you are referring to, we are applying tools that we have already taught (and provided in the notes!) to obtain more sophisticated types of code. Therefore, we regard this lecture as practical application of what you have learned so far in the previous video.
Hope this helps but please feel free to get back to us should you need further assistance. Thank you very much once again.
Best,
Martin