Lists

What You’ll Learn

You’ll learn how to create and access items in a list, one of Python’s most versatile data structures.

What is a List?

Lists are used to store multiple items in a single variable. Lists are created using square brackets [].

fruits = ["apple", "banana", "cherry"]
print(fruits)

Accessing Items

List items are ordered and indexed. The first item has index 0, the second item has index 1, etc.

fruits = ["apple", "banana", "cherry"]
print(fruits[0])  # apple
print(fruits[1])  # banana

Negative Indexing

Negative indexing means starting from the end. -1 refers to the last item, -2 refers to the second to last item, etc.

fruits = ["apple", "banana", "cherry"]
print(fruits[-1]) # cherry

Changing Item Values

Lists are mutable, meaning you can change, add, and remove items after the list has been created.

fruits = ["apple", "banana", "cherry"]
fruits[1] = "mango"
print(fruits) # ["apple", "mango", "cherry"]