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  1. Jul 28, 2021 · 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.

    • 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)
    • Create a Function. Let's create our first function. def greet(): print('Hello World!') Here are the different parts of the program: Here, we have created a simple function named greet() that prints Hello World!
    • Calling a Function. In the above example, we have declared a function named greet(). def greet(): print('Hello World!') If we run the above code, we won't get an output.
    • Example: Python Function Call. def greet(): print('Hello World!') # call the function greet() print('Outside function') Output. Hello World! Outside function.
    • Python Function Arguments. Arguments are inputs given to the function. def greet(name): print("Hello", name) # pass argument greet("John") Sample Output 1.
  2. 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 »

  3. 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. Functions can also be reused, often they are included in modules. Related course: Complete Python Programming Course & Exercises. Example Functions. Functions can be seen ...

  4. 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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  6. Aug 2, 2022 · Exercise 1: Create a function in Python. Write a program to create a function that takes two arguments, name and age, and print their value. Show Hint. Show Solution. Exercise 2: Create a function with variable length of arguments. Write a program to create function func1() to accept a variable length of arguments and print their value.

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