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Lesson 23.8 Properties (OPTIONAL)

This video introduces an advanced topic that is completely optional and will not appear on any exam. Classes like RGB and Point3 appear to enforce their invariants without any getters and setters.…

From  Hannah Lee on November 8th, 2020 8 plays

Lesson 19.3 Dictionary Visualization

Since dictionaries are mutable, we must represent them with folders. In this video we show what these folders must look like. In doing so, we see that they look suspiciously similar to other folders…

From  Hannah Lee on October 27th, 2020 27 plays

Lesson 18.1 List of Objects

Lists require that we explicitly show the folder when visualize them. In this video we show what that means when a list contains other objects that have their own folders. The result is a chain of…

From  Hannah Lee on October 27th, 2020 22 plays

Zoom Oct. 1. Objects

In this session we use the Python visualizer to help us better understand objects, a new type of data. For many students this is the first big difficulty jump in this course.This class is going to…

From  Hannah Lee on October 2nd, 2020 5 plays

Lesson 11.6 Attribute Invariants

When you work on Assignment 3, you will discover that the color objects have some significant restrictions on how they can be used. These restrictions are called attribute invariants, and they are…

From  Hannah Lee on October 2nd, 2020 7 plays