Lists (Advanced)

Python programmers love lists because they are extremely versatile and can be used to store any type of data.

Advanced Slicing

You can use a negative index to access a list from the back of the list:

fruits = ['apple', 'banana', 'orange', 'pear', 'strawberry']
fruits[-1] # 'strawberry'

You can also slice a list to get a sublist:

fruits[0:2] # ['apple', 'banana']

You can check if an element exists in a list:

'apple' in fruits # True
'carrot' in fruits # False

You can also iterate through the elements of a list.

for fruit in fruits:
    print(fruit)

Output: apple banana orange

Python has many built-in functions for working with lists.

If you want to add one item to the end of a list, use the .append() function.

[1, 2, 3].append(4) # [1, 2, 3, 4]

If you want to remove an item from a list at a specific index, use the .pop() function.

[1, 2, 3].pop(1) # [1, 3]

If you want to remove an item from a list, use the .remove() function.

[1, 2, 3].remove(2) # [1, 3]

If you want to sort a list in ascending order, use the .sort() function.

[3, 5, 2, 4, 1].sort() # [1, 2, 3, 4, 5]

You can also sort strings in alphabetical order by using the .sort() function.

['a', 'c', 'b'].sort() # ['a', 'b', 'c']