## Table of Contents
+ [Lab 9 Home](/labs/lab09)
+ [Part 1: Exercises](/exercises/ex08_files_and_tracing)
+ [Part 2: Secret Message](/labs/lab09/secret-message)
+ [Knowledge Check](/labs/lab09/check)

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+ [Part 0: Warm-Up](/labs/lab09/warmup)
+ [Part 1: Tests & List Comprehensions](/labs/lab09/testing-and-comprehensions)
+ [Part 2: File Exercises](/labs/lab09/files)
+ [Extra: Additional Exercises](/labs/lab09/extra)
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