Search for tag: "objects"

The while-loop that drives the game is hidden. This is going to create some interest challenges, particularly when you need variables that carry over from animation frame to animation frame. In this…

In order to understand the classes that you will use in the final assignment, you first need to understand how a game application works. In this video we lay out the big picture. We talk about the…

As we saw in the previous video, we cannot trust == if we need to test if two variables refer to the same object folder. In this video we show an alternative operator is, which is safe to use because…

Previously when we compared objects, we compared them attribute-by-attribute. That is because the meaning of == on objects is less clear. As we show in this video, that is because equality (and the…

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.

Now that you know how to define a class, you need to understand how Python processes the definition. In this video, we see that Python handles it in much the same way, that it does function…

In this video we show you the basic format of a class definition. However, classes can contain a lot of features, so our classes will be very simple for this demonstration.

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…

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…

Zoom Recording ID: 96548055743 UUID: FoQxDuDUS/OSj4LRkkqbyg== Meeting Time: 2020-10-23T15:17:05Z

Strings, lists, and tuples are not the only iterable types. In this video we introduce the range function, which creates another iterable value. This is going to allow us to do several things that we…

Because lists are mutable, just like general objects, we can modify them in the body of a function. In this video we show how to write mutable list functions, which are (typically) procedures that…

Lists have many of the same methods as tuples. But since they are mutable, they have even more. In this video we show off some of the mutable methods of lists, which are methods that can alter the…

Because lists are mutable, we need to explicitly draw their folder when we visualize them. In this video we show how slicing affects these folders.

In this video we introduce the list, which looks almost exactly the the same as a tuple, except that it is written differently. Indeed, it supports many of the same operations as tuples. Together,…

We now know how to do assert statements to create errors. But the error messages are a little cryptic. In this video we talk about how we can do a better job.