Island 1
0/4Speaking to Python
Instructions, text, values, and your first program
Python 3.13 · zero experience needed
Learn Python by seeing it think.
Twenty-four visual lessons that move from your first instruction to a real dataset quality report—built for the road to IOAI.
✓ Real Python in your browser✓ Progress stays on this device✓ No setup or account
instruction
score = 0.86decision
score >= 0.8result
TruePYplayground
Course 01
Python Foundations I
Six islands. Four short lessons on each. Every island ends with a mastery challenge.
0%
0 lessons mastered24 remaining
Island 2
0/4Remembering Data
Variables, numeric types, input, and conversion
Island 3
0/4Making Decisions
Comparisons, logic, and branching paths
Island 4
0/4Repeating Work
Loops, accumulators, and training logs
Island 5
0/4Organizing Data
Lists, indexes, dictionaries, and summaries
Island 6
0/4Reusable Thinking
Functions, scope, debugging, and a capstone
How each lesson works
See it. Predict it. Build it. Recall it.
Visual model
Turn syntax into a picture you can reason about.
Active prediction
Choose the next state before Python reveals it.
Real code
Run Python 3.13 and inspect genuine output and errors.
Mastery check
Pass recall and multiple code cases to unlock the next lesson.
The full route
From first line to IOAI—and then C++ olympiad
The foundation course is available now. Later tracks show where every skill is going.
Available now
Python Foundations I
Syntax, variables, decisions, loops, collections, functions, and debugging.
Up next
Python Core II
Nested data, comprehensions, files, exceptions, modules, testing, and essential classes.
Future track
Scientific Python
NumPy, pandas, Matplotlib, Seaborn, and dataset preparation.
Future track
Classical Machine Learning
Scikit-learn workflows, evaluation, regression, classification, clustering, and tuning.
Future track
PyTorch and Deep Learning
Tensors, autograd, training loops, CNNs, attention, transformers, and fine-tuning.
Future track
IOAI Practice Labs
Jupyter-based tabular, vision, NLP, audio, and timed competition labs.
Future track
C++ Informatics Route
C++ foundations, STL, algorithms, data structures, graphs, dynamic programming, and olympiad sets.
Your learning belongs to you.
Progress and saved code stay in this browser. Cargo Learn has no account, leaderboard, or cloud grading.