Computer science · University
Lists, dictionaries and iteration · revision notes
An ordered mutable collection addressed by position.
Key ideas and conditions
List
An ordered mutable collection addressed by position.
Dictionary
A mapping from keys to values.
Index
A position used to access an item in a sequence.
Traversal
Visiting items in a collection systematically.
Explain without looking
- Give a short example showing how Index would be used in practice.
- Summarize why Traversal matters in the lesson “Lists, dictionaries and iteration”.
Further reading and review references
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