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Star tree
Grow a triangle of stars row by row using a loop.
Sprout· ages 8–1015 minfor loopsrangestrings
star_tree.py
…First load pulls ~10 MB of Python. Only happens once — the browser caches it after.
What should the output look like?
Your tree should have several rows of stars, wider at the bottom than the top.
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How this works
Every row of the tree has one more star than the row above. A for loop builds those rows one at a time. The trick is spaces on the left + stars in the middle — as we go down, fewer spaces, more stars, and a triangle appears.
Your turn — try these
- 1Replace "*" with an emoji like "🎄" or "⭐" and rerun.
- 2Can you print TWO trees side-by-side on each row?
- 3Add a one-line trunk at the bottom made of "|" characters.