What does "melt" do in Pandas?

If you use Pandas, then you've probably heard of "melt". But what does it do, exactly? Why would you want to use it? And how is it related to pivot tables? In this video, I answer all of these questions: I show you how "melt" works, how to use it, why you would use it, and how it's the mirror image of the "pivot" method. The Jupyter notebook from all of my YouTube videos is at https://github.com/reuven/youTube-notebooks .