Functions in Python allow programmers to organize code into reusable blocks that take inputs and return outputs. Functions help avoid repetitive coding by allowing programmers to define code blocks once that can be called multiple times, making programs more efficient and easier to maintain. Functions take inputs, perform tasks, and return outputs to simplify and structure Python programs.

1. Functions
Python Tutorial
by Menard Maranan

2. “Function”
XFunction
What is a Function?
>>>In Python, a Function can be
a collection of code/s to make
our codes organized.
>>>Functions commonly takes an
Input and returns an Output.

3. “Function”
XFunction
Why use Functions?
>>>If you don’t want to type
the same code over and over
again, use functions.
>>>Just code them once, and you
can forget about it while still
use its functionality.