November 2025
Beginner to intermediate
256 pages
5h 58m
English
Functions are a great tool to help you organize your code, but to write your own functions, you must understand def statements, parameters, arguments, and return values. Functions also bring to light new programming concepts, such as the call stack and scopes.
The following activities test your ability to create functions and use them effectively. Almost every program you write of significant length is better served by including functions, so it’s important to understand their behavior.
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