Working With Lists
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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:
123fruits = ['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.
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Working With Lists
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:
123fruits = ['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.
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