What Are Functions?

A reusable collection set of operations is known as function. While that may seem like a simple definition, what does it truly mean? Consider the print() and len() functions as examples; both consistently perform predefined tasks, making them clear instances of functions!

Benefits of using functions

Consider a function as a black box that performs a specific task. We provide it with an input, and it produces an output. There's no need to rewrite the set of instructions for different inputs; we can simply call the function again with a new input. Functions are advantageous because they help keep the code concise and straightforward. The main benefits of using functions include:

• Reusability: Functions allow you to write code once and reuse it multiple times, reducing redundancy.

• Modularity: Breaking down complex problems into smaller, manageable functions makes your code easier to understand and maintain.

• Abstraction: Functions enable you to hide the implementation details, allowing you to focus on what the function does rather than how it does it.

• Easier testing and debugging: Functions can be tested individually, making it easier to identify and fix issues.

• Improved organization: Grouping related operations into functions helps keep your code organized and enhances readability.

• Parameterization: Functions can accept parameters, allowing you to customize their behavior and output based on different inputs.

An input isn’t always required; a function can also perform its own computations to accomplish a task.