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Lists, Dicts & Data
Collections that hold your data · 11 lessons
The workhorses of Python: lists, slicing and negative indexes, dictionaries, tuples and sets, sorting, membership tests and nested data.
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Get the appLessons in this track
- 1Lists
- 2Negative indexes
- 3Slicing
- 4append & pop
- 5The in operator
- 6Sorting
- 7Dictionaries
- 8dict.get & keys
- 9Tuples
- 10Sets
- 11Nested data
How you'll be checked
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.