Search for tag: "parentheses"

While generators are coroutines, the communication only goes one way: from the child to the calling parent. In this video we show how to reverse this communication, passing down information from the…

Every class must be a subclass of something, and that parent class goes inside of the parentheses. That means that the word object we have been using in all of class definitions is actually a class.…

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…

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.

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,…

In this video we introduce the first new sliceable type, the tuple. We show why we need this new type, and why it is more flexible than a string.

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.

Objects have an interesting feature that we saw before we strings: they have methods in addition to functions. In this video we talk about those methods, and how they differ from string methods.

Both specifications and testing are critical for the first assignment. But many students struggle with them because they are so “fuzzy”.To help you improve your skills here, we have are…

In the previous video, we showed how to call a string method if it had only one argument – the string. In this video we show you how to call arbitrary string methods, which can have many…

Strings do not have a lot of functions associated with them. Instead, strings have methods. As we see in this video, methods behave almost exactly like functions, except that the syntax for calling…

In this video, we show you how to define a procedure in the Python interactive shell. Recall that a procedure is a function that is used as a command.

This video series is where we start to pile on the vocabulary. In this video we reveiw the most important vocabulary terms for this series, and show you where to look if you are unsure about a word.

While this new video/lecture format is allowing us to show you things we could not cover in year’s past, there is a limit to how much we can show you. Sometimes you are just going to need to…

The easiest functions to use in Python are those that are built into it. They are listed on the Python Documentation page. In this video we examine some of these and show the syntax for how to use…

For the most part, operations are used to combine two expressions of the same type. Adding together two ints is different from adding together two strings. In this video we see what happens when we…