Module
Domain: Programming Fundamentals
🎯 Motivation
A module is a file of Python code you can import - it groups related functions and classes together.
📋 Concrete Example
import math - the math module has math.pi, math.sqrt(), math.cos(), etc. All math-related functions in one place.
🔗 Analogy
A toolbox - the math toolbox has a ruler, compass, and protractor. You open the box (import) and use the tool you need.