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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.
Jul 28, 2021 · In any programming language, functions facilitate code reusability. In simple terms, when you want to do something repeatedly, you can define that something as a function and call that function whenever you need to. In this tutorial, we shall learn about user-defined functions in Python.
In Python a function is defined using the def keyword: Example Get your own Python Server. def my_function (): print("Hello from a function") Calling a Function. To call a function, use the function name followed by parenthesis: Example. def my_function (): print("Hello from a function") my_function () Try it Yourself » Arguments.
Functions in Python (With Examples) - Python Tutorial. To group sets of code you can use functions. Functions are small parts of repeatable code. A function accepts parameters. Without functions we only have a long list of instructions. Functions can help you organize code.
- Python function that prints a text. The statements in the function get executed only when we call the function. The function definition should be written before the function call.
- Python function that accepts two numbers as arguments and returns the sum. Functions can take arguments (one or more). Functions can return a value to the main method.
- Python function that accepts different values as parameters and returns a list. def myFruits(f1,f2,f3,f4): FruitsList = [f1,f2,f3,f4] return FruitsList output = myFruits("Apple","Bannana","Grapes","Orange") print(output)
- Python function that returns a dictionary. def myAnimals(a1,a2,a3): Animalgroup = {'Kitten':a1,'Puppy':a2,'Pup':a3} return Animalgroup output = myAnimals("Cat","Dog","Rat") print(output)
Aug 24, 2021 · How to Define a Function in Python. The general syntax for creating a function in Python looks something like this: def function_name(parameters): function body. Let's break down what's happening here: def is a keyword that tells Python a new function is being defined. Next comes a valid function name of your choosing.
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Mar 16, 2022 · In this article, I will show you how to define a function in Python and call it, so you can break down the code of your Python applications into smaller chunks. I will also show you how arguments and the return keyword works in Python functions.