Dot Notation: Building and Filtering Lists

How do you read `object.operation` dot notation, and build a filtered list from an empty list, a loop, and append?

Finger exercises

Short drills on what this video just taught. Write the code, run the checks, and reveal the answer only if you are stuck.

0 / 5 passed

Exercise 1 of 5

Build a list of squares

Starting from the empty list squares, build up the square of every integer from 0 up to and including n, in order — loop over a range and append as you go. With n = 5, squares should end up as [0, 1, 4, 9, 16, 25].

n = 5
squares = []
# your code here — loop and append so squares holds each square in order

n = 5
squares = []
# your code here — loop and append so squares holds each square in order

Python runs in your browser

⌘/Ctrl + Enter runs

squares is a list

holds every square from 0 through n, in order

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