Python Functions Explained

Functions are reusable blocks of code that perform a specific task. In Python, you define a function using the 'def' keyword, followed by the function name and parentheses containing any parameters. Key concepts: 1. Parameters are inputs passed to the function 2. Return values are outputs the function gives back 3. Default parameters allow you to call a function without providing all arguments 4. Functions help you avoid repeating code Functions make your code more organized, reusable, and easier to test. They're one of the most fundamental building blocks in Python programming.