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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 · The following snippet shows the general syntax to define a function in Python: def function_name(parameters): # What the function does goes here return result. You need to use the def keyword, give your function a name, followed by a pair of parentheses, and end the line with a colon (:).
- 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)
The following example has a function with one argument (fname). When the function is called, we pass along a first name, which is used inside the function to print the full name: Example. def my_function (fname): print(fname + " Refsnes") my_function ("Emil") my_function ("Tobias") my_function ("Linus") Try it Yourself »
Jan 28, 2020 · Introduction to Functions in Python. A function allows you to define a reusable block of code that can be executed many times within your program. Functions allow you to create more modular and DRY solutions to complex problems.
A function is a reusable block of programming statements designed to perform a certain task. To define a function, Python provides the def keyword. The following is the syntax of defining a function.
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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.
