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Lesson 8 of 20 · Data & Lists
Data & Lists — Part 16
Lists and loops. This is part 16 of 20.
What you'll learn
You will learn that lists store multiple values, and you access them by their index (starting at 0).
Steps
- 1A list holds multiple values in order. Here, items contains three fruits: apple, banana, orange.
- 2items[0] means 'the first item'. In coding, we count from 0! So items[0] is 'apple', items[1] is 'banana', items[2] is 'orange'.
- 3Lists are super useful — think of a playlist (list of songs), a shopping list, or a leaderboard (list of scores).
- 4You can add items, remove items, and check how many items are in a list with len(). Lists grow and shrink as needed!
Key Terms
- List
- A collection of values in order. In Python: [a, b, c].
- Index
- The position of an item in a list. The first item is index 0.
- len()
- Returns how many items are in a list.
Python 3
Output
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