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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. Python Functions - GeeksforGeeks

    Oct 4, 2025 · We can define a function in Python, using the def keyword. A function might take input in the form of parameters. The syntax to declare a function is: Here, we define a function …

  3. Python Functions (With Examples) - Programiz

    A function is a block of code that performs a specific task. In this tutorial, we will learn about the Python function and function expressions with the help of examples.

  4. How to Define and Use Functions in Python: A Complete …

    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.

  5. Python Functions - Python Guides

    In Python, you define a function using the def keyword, followed by the function name and parameters in parentheses: """Docstring: explains what the function does""" # Function body. # …

  6. How to Write Functions in Python: A Step-by-Step Guide

    Mar 20, 2025 · Learn how to define and use functions in Python with this beginner-friendly guide.

  7. Python Functions: How to Call & Write Functions - DataCamp

    Nov 22, 2024 · In this tutorial, you'll learn all about Python functions. Follow steps to learn how to write and call functions in Python. Find code examples today!

  8. Mastering Function Writing in Python - CodeRivers

    Apr 10, 2025 · By writing functions, you can make your code more organized, easier to understand, and maintain. This blog post will guide you through the process of writing …

  9. Writing Functions in Python — A Beginner’s Guide for Data …

    Learn why and how to create your own Python functions. Understand parameters, return vs. print, and best practices for cleaner code.

  10. Functions in Python (with Examples) - PySeek

    Mar 28, 2025 · In this tutorial, we will understand everything about functions in Python, including their types, how to define and use them, and provide various practical examples. What is a …