Programming with Subclasses

Live coding today! We design and implement classes for various animals (Animal, Fish, Bird, Penguin, and Parrot). What is an appropriate hierachy? What class and instance attributes do we need? Can we have default values for some attributes? What methods do we need and which ones should we override?

• A few slides to set up the problem: individual slides for viewing and a "6-up" version for printing
• video
• audio only
• Starter code to follow along the video and try coding yourself: zoology_skeleton.py
• Completed code: zoology.py
• Just for fun, here's a module that sets up a zoo! The given module creates a Zoo and lets you interact with the animals. You can play a little at the zoo, and then read the code to see how we use Animal and its subclasses.