A list is a variable which can hold multiple values.
list_of_alpahbet = ['a','b','c','d']; list_of_numbers= [1,2,3,4,5] list_of_fruits = ['🍎','🍊','🍐','🥑','🥝','🍓','🍋','🍍'] mixed_list = ['a','b', 1,2, '🍓','🍋'] print(list_of_alpahbet) print(list_of_numbers) print(list_of_fruits) print(mixed_list) 
Generally, you want to keep your list homogeneous. That is, you want to keep elements of similar type within a list.
In the example, the first 3 lists (list_of_alpahbet, list_of_numbers, list_of_fruits) are recommended. The 4th list (mixed_list) isn't as it is not homogeneous.
Accessing elements in a list
Elements stored within a list can be accessed via their index.
The first element always has an index value of 0.
list_of_alpahbet = ['a','b','c','d']; list_of_numbers= [1,2,3,4,5] list_of_fruits = ['🍎','🍊','🍐','🥑','🥝','🍓','🍋','🍍'] mixed_list = ['a','b', 1,2, '🍓','🍋'] print(list_of_alpahbet[0]) print(list_of_numbers[1]) print(list_of_fruits[2]) print(mixed_list[3]) 
Nested lists
A list can be nested within another list.
# Nested lists fruits_names = [ ['Strawberry', '🍓'], ['Lemon', '🍋'], ['Pineapple', '🍍'] ] ### Accessing the first list within a list. print(fruits_names[0]) ### Accessing the first value of the first nested list. print(fruits_names[0][0]) 
Number of elements in a list.
To evaluate the number of elements in a list, we use the len() function.
list_of_fruits = ['🍎','🍊','🍐','🥑','🥝','🍓','🍋','🍍'] print(len(list_of_fruits)); 
Adding new elements to a list
Use .append() to add new elements to a list.
fruits_names = [ ['Strawberry', '🍓'], ['Lemon', '🍋'], ['Pineapple', '🍍'] ] ## Adding a new element to the list fruits_names.append(['Avocado', '🥑']) print(fruits_names) 
Removing from list
Use .remove() to remove an element from a list.
fruits_names = [ ['Strawberry', '🍓'], ['Lemon', '🍋'], ['Pineapple', '🍍'] ] ## Removing an element from the list fruits_names.remove(['Lemon', '🍋']) print(fruits_names) 
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