Python
PyVisual
Python from the ground up — variables, logic, loops, lists and functions, all animated.
13 scenes · Beginner
Try the free preview→For people learning to code
Watch your code run, one line at a time.
PyVisual and CVisual teach programming by showing what the computer is actually doing: every variable is a box you can see, and every loop visibly goes round.
Ask about the coding courses- 01Python (PyVisual) and C (CVisual), starting from zero
- 02Variables, conditions, loops and functions, animated
- 03Step through code one line at a time
- 04Runs in the TwiddleLabs app on your phone or laptop, even offline
Try one
Don’t take our word for it. Move it.
PyVisual · LoopsRun it line by line.
sum.py · n = 5
1total = 0
2for i in range(1, n + 1):
3 total = total + i
4print(total)
line 1 · Make a box called total and put 0 in it.
i
—
total
0
total, as blocks
12345
output
A PyVisual-style scene: a Python loop, run one line at a time. Try it — it’s the real thing, not a video.
The courses
For people learning to code · 2
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