Data Iteration · Part 3
Dict aggregation for data: population totals, top tickers, molecular masses, weighted averages.
Lesson 15 · Data Iteration · Part 3 — Level II · Guide
September 3, 2026 · Bridge Academy Python Program
Learning goals
- Iterate a dictionary four ways: default, .keys(), .values(), .items(). - Aggregate values (total rainfall, revenue, elements). - Find key with max/min value (top performer, hottest city). - Filter and transform dictionaries by value (build new mappings explicitly).
This lesson covers PCEP-30-02 objective 2.2.
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