Changing the entire GUI language all at once

In this recipe, we will change all of the GUI display names, all at once, by refactoring all the previously hardcoded English strings into a separate Python module and then internationalizing those strings.

This recipe shows that it is a good design principle to avoid hardcoding any strings, that our GUI displays, but to separate the GUI code from the text that is displayed by the GUI.

Designing our GUI in a modular way makes internationalizing it much easier.

Getting ready

We will continue to use the GUI from the previous recipe, GUI.py. In that recipe, we had already internationalized the title of the GUI. We will enhance the LanguageResources.py module from the previous recipe...