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This video is not optional because the material is advanced. It is optional because this video series has run long and this topic is less important for you to know. While we have not talked about…

in this presentation we review the Python data model, showing off the various operators we can define in Python. This is an area where Python is much more advanced than older object-oriented…

While-loops require additional patterns beyond the simple accumulator pattern that we used in for-loops. In this video, we talk about the first such pattern, which is replacing the range iterator.…

In this video we show how to use the error type to give you more control over a try-except statement. You can chose to recover from some errors, while completely ignoring other errors.

Types guarantee that an object supports a set of operations (methods) and has a certain set of attributes. However, in this video we show that we can actually get this information without typing an…

In this video, we show that we can solve the problem of strict typing by using the isinstance function. This function will be our preferred way for enforcing preconditions going forward.

Title: Interface Types Introduction and Update Speaker: Luke Wagner—Fastly Summary: The presentation will recap the motivation and requirements for the Interface Types proposal as well as the…

In ths presentation, we will spend the time creating several example classes. This is another major part of the next exam.When we work with classes, it is very important to pay attention to…

In this video we introduce the primary tool for abstraction in Python. Operator overloading allows us to define additional meanings for any built-in symbol such as + or *. Because Python uses the…

Sometimes you do not want to completely override a method. You just want to override part of it, or add a few extra features at the end. In this video, we introduce the super function which allows us…

Subclasses inherit all of the methods of their parent. But suppose you do not want to use the inherited version of a method, but want to define a new one instead? In this video we talk about the…

In this previous video we introduced the concept of getters and setters. But how do we force the user to use these when the attribute is so much simpler. In this video we talk about the concept of…

The divide-and-conquer examples we saw in the previous session were on the easy side. In this session we look at some much more challenging examples.Included in this session is segregate, the most…

Recursion is a powerful programming tool and one of the fundamental principles of computer science. It is used in many advanced algorithms.In this session, we will just focus on divide-and-conquer,…

When we first introduced objects, we talked about the concept of object representation. But how does Python know how to use this representation. In this video, we see that this is the result of…

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…