Year 2 Term 4: Data Structures

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Work with lists and dictionaries - the fundamental data structures that power real applications.

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Lists Level Up 📋⬆️

Go deep on Python lists — indexing (including negative indexing), adding, inserting, removing and changing items, len(), and looping by index — the foundation for this term's Contact Manager

Slicing & Searching Lists ✂️🔍

Grab sub-lists with slicing, and hunt for items using in, .index(), and .count() — the exact skills your Contact Manager will use to search

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Sorting & List Tricks 🔃🧰

Put lists in order with sort() and sorted(), flip them with reverse, and summarise data with min(), max(), sum() and len() — the tools that power leaderboards and search results

Dictionaries: Labelled Boxes 🗂️🏷️

Meet the dictionary — Python's way of storing information with named labels instead of number positions, the core building block of your Contact Manager

Looping Over Dictionaries 🔁🗂️

Loop through dictionaries with keys, values, and .items() — print them beautifully, and build a tally counter that counts votes and words

Lists of Dictionaries: Records! 🗃️📇

Master the power pattern real apps are built on — a LIST where every item is a DICTIONARY (a 'record') — and learn to build, access, loop, search and filter a list of records, priming next week's Contact Manager

Project: Contact Manager 📇🛠️

Build a complete, menu-driven Contact Manager from scratch — a list of dictionaries that lets you add, view, search, and delete contacts, all wrapped in functions and a crash-proof while loop

Data Showcase & Data Architect Badge 📇🏅

Term 4 finale — demo your Contact Manager, give peer feedback, ace a data structures quiz, earn the Data Architect Badge, and celebrate mastering lists and dictionaries