Connecting functionality to the Exit menu item

In this recipe, we will add functionality to the Exit menu item we created in the previous recipe. So far, we have two menu items, but they aren't interactive.

Here, we will learn how to add functionality outside of the UI by using our modular approach to coding. We will also improve our code by transforming the "__main__" self-testing section into a class of its own.

Getting ready

You will need to have the .ui code from the previous recipe available. All the other prerequisites apply to this recipe as well.

How to do it...

...