Unit 07 — Strings & Text Processing

Four original, step-by-step Python lessons. Each includes a worked example, tracing, reflection, and a separate checkable practice task. All lessons keep stable IDs in the 07-strings-and-text/ namespace.

1. Read characters by position — 5 points
2. Take a slice of a string — 5 points
3. Clean messy text — 10 points
4. Build a digital name badge — 15 points

This unit extends the progression in How to Think Like a Computer Scientist; the instructional prose and exercises are original. See curriculum sources.