Lesson 5: Functions & Modules
Objective: Write reusable code blocks.
-
Defining functions (
def greet():). -
Return values (
return x + y). -
Built-in modules (
import math).
Code Example:
return a + b result = add(3, 5) print(result) # Output: 8
Exercise:
-
Write a function that calculates the average of three numbers.

