In this lesson, we're going to talk about lists in Python. Lists are a set, a collection, or in some programming languages, they're called an array, but it's a grouping of items that are assigned to a single variable. With that comes specific properties associated with the list in Python. For example, lists items are ordered starting with the number 0. So if you have a 3-item list, then the numbers are 0, 1, and 2. The items can be changed, the items in a list in Python can be duplicated, and the modifications may be made to how they are numbered and accessed. So if you want your list to start counting at the third element, you can certainly do that. Also, we need to know that items can be added or removed. But first, let's look at how they're put together. You generally have a list name or a variable. If you recall in the lesson on the for loop, we used a list to loop through a list of items, and the list name was desserts. So you have the variable name, followed by the assignment operator, followed by the items, each one separated by a comma, and each item enclosed in quotation marks, with a set of square brackets surrounding the entire list. So because of that, we were able to use a for loop just to print the list items out, and it looks like this. There are many things that you can do with a list. One of the things that a list is very good for is to search through. So if you need to, let's say we're looking for every instance of pi in our list, we can do that with a simple if statement. So in our next lesson, we are going to use lists to examine some of their functionality. So see you then.