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Creating a List

Lists are used to store multiple items in a single variable.

Lists are one of 4 built-in data types in Python used to store collections of data, the other 3 are Tuple, Set, and Dictionary, all with different qualities and usage.

Lists are created using square brackets:

List.py
myList = []  # This is an empty list
print(myList)

The Basic Method​

List_Basics.py
myList = ["apple", "banana", "cherry"]
print(myList)

The list() Constructor​

Create a file List_Constructor.py

It is also possible to use the list() constructor when creating a new list.

List_Constructor.py
myList = list(("apple", "banana", "cherry")) # Note the double round-brackets
print(myList)

NOTE: The list() constructor only works on iterable objects.

Example.py
myList = list("Shashank")
print(myList)

Output
['S', 'h', 'a', 's', 'h', 'a', 'n', 'k']

Creating an Empty List​

Create a file EmptyList.py

An Empty List can be created in two ways:

  1. Using Empty Square Braces

EmptyList1.py
myList = []

  1. By List Constructor

EmptyList1.py
myList = list()

Creating a Nested List​

Create a file NestedList.py

A nested list is made up of a series of sublists separated by commas.

NestedList.py
myList = [1,2,3,[4,5,6],[7,8,9,0]]
print(myList)