Stryg for at vise menuen

In this chapter, we will learn about lists — one of the most useful data structures in Python.

A list is a collection of items. For example, you can store a list of colours or numbers.

Lists are defined using square brackets. You can also sort them using the sorted() function, or apply a lambda to transform elements — lambda x: x * 2 — which is an anonymous function. We'll cover lambdas properly in the next section.

Here is how to create a list:


              123
            
  fruits = ['apple', 'banana', 'cherry']
  print(fruits[0])
  print('The list has', len(fruits), 'items')

Decorators are a powerful way to modify function behaviour at definition time.

Var alt klart?

Tak for dine kommentarer!

Sektion 2. Kapitel 1

Spørg AI

Spørg om hvad som helst eller prøv et af de foreslåede spørgsmål for at starte vores chat

Working With Lists