Python Tutorials

Python List

List

A list stores multiple items in a single variable.

You can create a list by using square ([]) brackets.

Example

numbers_list = [
    0, 1, 2, 3, 4, 5
]
print(numbers_list)

[0, 1, 2, 3, 4, 5]

In the above example, we declared a list of items from 0 to 5 using a square bracket ([]) and printing that list using the print() function.

A List Allows Duplicate Items

There is no restriction on adding the same items to the list more than once.

Example

numbers_list = [
    0, 1, 1, 2, 2, 2
]
print(numbers_list)

[0, 1, 1, 2, 2, 2]

In the above example, we added integers 1 and 2 multiple times to the list.

Python List Items Data Types

There is no restriction on adding similar data type items into the list, you can add different data types as well.

Example

list1 = [0, 1, 2]
list2 = ["Red", "Blue", "Green"]
list3 = [True, False, True]
list4 = [1, "Red", True]

print(list1)
print(list2)
print(list3)
print(list4)

[0, 1, 2]
['Red', 'Blue', 'Green']
[True, False, True]
[1, 'Red', True]

In the above example, we created four different lists (list1, list2, list3, and list4) and added different data types of data into the list.

In the first list, we listed integer data type items (list1 = [0, 1, 2]) in the second list, string data type items (list2 = ["Red", "Blue", "Green"]) in the third list, boolean data type items (list3 = [True, False, True]), and in the fourth list, we added a combination of different data type items (list4 = [1, "Red", True]).

Python list() Constructor

You can also create a list using the list() constructor.

Example

numbers_list = list((0, 1, 2, 3, 4, 5))
print(numbers_list)

[0, 1, 2, 3, 4, 5]

In the above example, we use a list() constructor for creating the list.

List Items Count

To determine how many items are in the list, use the len() function.

Example

numbers_list = [
    0, 1, 2, 3, 4, 5
]
print(len(numbers_list))

6

In the above example, the number of items count is 6.