Lesson 13 · Data Iteration · Part 1 — Level I · Guide

August 20, 2026 · Bridge Academy Python Program

Learning goals

• Write a for loop using range(n) to repeat an action n times.
• Use range(start, stop) and range(start, stop, step) for custom counts.
• Count down with a negative step: range(10, 0, -1).
• Use the loop variable inside the loop body, including inside f-strings.
• Add numbers up with an accumulator variable that grows each pass.
• Feel the difference between the loop header and its indented body.

This lesson covers PCEP-30-02 objective 2.2.