Python Functions
<code>def</code>, parameters, return values, scope basics, and docstrings.
Focus: python functions def
Practice in the browser IDE
Runnable sample for this lesson loads into the editor — press Run when you’re ready.
Functions encapsulate behaviour — prefer small, composable units over mega-scripts.
In this lesson
- Parameters vs arguments naming.
- Return values vs side-effects.
- Local vs global intuition (avoid globals for beginners).
Tip: follow lessons top-to-bottom — later chapters assume earlier ones.
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