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Lesson 21.4 Invariant Enforcement

We know how to enforce preconditions, but how do we force invariants for our attributes? As we see in this video, we do it much the same as for preconditions. But that is because we are going to…

From  Hannah Lee on October 30th, 2020 50 plays

Lesson 14.1 Try-Except Statements

In this video we intrduce a new control structure: the try-except statement. As we will see, it looks very similar to an if-else statment with some important differences.

From  Hannah Lee on October 10th, 2020 17 plays

Lesson 7.1 Software Development

In this video, we talk about the business side of developing software and the challenges of working in teams. This video demonstrates why specifications are so important, and motivates the details in…

From  Hannah Lee on September 24th, 2020 5 plays