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Functions

Reusable building blocks · 7 lessons

Package logic into functions: parameters and defaults, keyword arguments, scope, *args and **kwargs, lambdas, and the map / filter pair.

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Lessons in this track

Each lesson pairs a short explanation with 2–3 exercises, graded deterministically on your device:

🔮 Predict the output

Read a snippet and say exactly what it prints — the fastest way to build a mental model of how Python runs.

✏️ Fill the blank

Complete the missing token so the code does what the prompt asks. No syntax hand-holding.

🔢 Order the lines

Drag shuffled lines back into the sequence that produces the right result.

✅ Pick the answer

Choose the correct statement about behaviour, output or a concept.

📦 Lists, Dicts & Data

✨ Comprehensions