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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 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 …

  4. An Essential Guide to Python Functions By Examples

    In this tutorial, you'll learn to define custom Python functions so that you can reuse them in the program.

  5. Python Functions for Beginners: Complete Guide With Examples

    Dec 1, 2025 · Learn Python functions with clear examples: definition, calling, parameters, defaults, and keyword arguments.

  6. Python - Functions - Online Tutorials Library

    A Python function is a block of organized, reusable code that is used to perform a single, related action. Functions provide better modularity for your application and a high degree of code …

  7. Python Functions [Complete Guide] – PYnative

    Jan 26, 2025 · In Python, the function is a block of code defined with a name. We use functions whenever we need to perform the same task multiple times without writing the same code …

  8. Python Function Syntax: A Comprehensive Guide - CodeRivers

    Jan 29, 2025 · Understanding Python function syntax is crucial for writing clean, modular, and efficient code. This blog post will take you through the basics of Python function syntax, how to …

  9. Python Functions (With Examples) - Programiz

    Here are the different parts of the program: Here, we have created a simple function named greet() that prints Hello World! Note: When writing a function, pay attention to indentation, …

  10. 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. # …