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  1. Python Functions - W3Schools

    Python Functions A function is a block of code which only runs when it is called. A function can return data as a result. A function helps avoiding code repetition.

  2. How to Define and Call a Function in Python - GeeksforGeeks

    Jul 23, 2025 · In Python, defining and calling functions is simple and may greatly improve the readability and reusability of our code. In this article, we will explore How we can define and call a function.

  3. How To Define A Function In Python?

    Feb 10, 2025 · Learn how to define a function in Python using the `def` keyword, parameters, and return values. This step-by-step guide includes examples for easy understanding

  4. Python Functions (With Examples) - Programiz

    We can create two functions to solve this problem: Dividing a complex problem into smaller chunks makes our program easy to understand and reuse. Let's create our first function. print('Hello World!') …

  5. Defining Your Own Python Function

    Jun 11, 2025 · Learn how to define your own Python function, pass data into it, and return results to write clean, reusable code in your programs.

  6. How to Define and Use Functions in Python: A Complete Beginner’s …

    Aug 24, 2025 · Learn how to define and use functions in Python. From basics to advanced features like *args, **kwargs, defaults, and lambdas—complete beginner’s guide.

  7. Python Function: The Basics Of Code Reuse

    Oct 19, 2025 · Functions are the real building blocks of any programming language. We define a Python function with the def keyword. But before we start doing so, let’s first go over the advantages of …

  8. Python Define Function: Step-by-Step Instructions

    In Python, defining functions is easy and also a foundational skill that can improve your code’s readability, modularity, and efficiency. Whether you are just starting your Python journey or building …

  9. Defining Functions :: Learn Python by Nina Zakharenko

    This is the recipe for defining a Python function: A function in Python is defined with the def keyword, followed by the function names, zero or more argument names contained in parenthesis (), and a …

  10. Defining Functions in Python: A Comprehensive Guide

    Feb 13, 2025 · In this blog post, we will explore the ins and outs of defining functions in Python, from the basic syntax to advanced techniques and best practices. What is a function? Why use functions? …