Search for tag: "arguments"

In this video we talk about two very famous generators: map and filter. We show how to use these to replace writing code with a for-loop.

After the last video, try-except looks less like an if-else statement and more like an if-elif-else statement. As we see in this video, this has profound effects on how errors interact with the call…

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…

Unlike other programming languages, a Python class has only one constructor, If we want to give the user more flexibility when creating objects, we should make certain arguments optional. In this…

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…

In addition to attributes, objects also have methods. In this video, we show how to add a method definition to a class. For the most part, it is as simple as indenting a function definition inside of…

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…

This video introduces an advanced topic that is completely optional and will not appear on any exam. Keyword expansion is the dictionary version of tuple expansion. It is used in modules like Kivy to…

This video introduces an advanced topic that is completely optional and will not appear on any exam. You might have noticed that some functions, like max can take an arbitrary number of arguments. In…

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…

When we introduced specifications, we talked about responsibility; if there is a problem with a function, it is either the fault of the definer or the caller. In this video, we show how we read an…

If function definitions are objects, then that means we can compute with them like any other object. In this video we show what happens when we assign a function definition to a variable, or why we…

We know what happens when we call a function. But as we show in this video, Python also does something very important when we define a function. It has to store the definition somewhere.