However, I had written the code in Python, so I had to make a choice. The Tkinter toolkit lets you create widgets (like buttons ... The layout there is a list of lists. Each list is a row in ...

The Tkinter library contains many different widgets to present the user with ... in an zero-indexed format, similar to the Python list. So, the first item resides in the first index, which ...

We've built a few of those (like the simple To-Do List using Python). For this one, I wanted to use some GUI, so I decided we'll be importing the Tkinter library to have some usable UI elements.