Case Study

This section expands on the object-oriented design of our realistic example. We’ll start with the diagrams created using the Unified Modeling Language (UML) to help depict and summarize the software we’re going to build. We’ll describe the various considerations that are part of the Python implementation of the class definitions. We’ll start with a review of the diagrams that describe the classes to be defined.

Logical view

Here’s the overview of the classes we need to build. This is (except for one new method) the previous chapter’s model:

Major classes

There are three classes that define our core data model, plus some uses of the generic List class. We’ve shown it using the type hint of List. Here ...