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Draw a square

Your first drawing — a square, built with a loop.

Sprout· ages 8–1010 minimportfor loopsturtle graphics

square.py

520×520

First load pulls ~10 MB of Python. Only happens once — the browser caches it after.

What should the output look like?

A square should appear on the canvas.

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How this works

The turtle is a little pen that draws lines as it moves. Move forward, turn right, forward, turn right — do that 4 times and you get a square. The for loop just runs the same two instructions 4 times.

Your turn — try these

1Change the 100 to a bigger number and rerun. What happens?
2Change the 4 in `range(4)` to 3 or 5. Now what shape do you get?
3Add `turtle.color("red")` before the loop.