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Lesson 20.8 The None Value

We have seen the None value used in several previous videos. But in this video we finally introduce it formally. In particular, we show why it is so commonly used in object initialization.

From  Hannah Lee on October 27th, 2020 34 plays

Lesson 20.7 Intializers

In this video, we introduce the most important method definition in any class: the initializer. The initializer is responsible for creating all the attributes so that the user does not need to worry…

From  Hannah Lee on October 27th, 2020 39 plays

Lesson 20.4 Classes Specifications

Classes are something we can define. That means we need a specification to tell us what it means for a definition to be correct. In this video we cover the basics of a class specification, and show…

From  Hannah Lee on October 27th, 2020 35 plays