Lesson 15 · Data Iteration · Part 3 — Level I · Guide

September 3, 2026 · Bridge Academy Python Program

Learning goals

• Iterate keys by default with for key in d:.
• Use .keys(), .values(), and .items() for explicit iteration.
• Sum, filter, and transform dictionary data with a loop.
• Build a new dict (e.g. doubled values, reversed mapping) with an explicit loop.
• Find the key with the max value and count entries above a threshold.

This lesson covers PCEP-30-02 objective 2.2.