Methods with return values in Python

Introduction

Methods with return values let you get a result back after doing some work. This helps you use that result later in your program.

When you want to calculate something and use the answer elsewhere.

When you need to check a condition and get true or false back.

When you want to process some data and get a new value.

When you want to organize your code into small reusable parts that give results.

When you want to avoid repeating the same code by calling a method and using its output.

Syntax

Python

def method_name(parameters):
    # do some work
    return value

The return keyword sends the result back to where the method was called.

Once return runs, the method stops running any further code inside it.

Examples

This method adds two numbers and returns the sum.

Python

def add(a, b):
    return a + b

This method checks if a number is even and returns True or False.

Python

def is_even(num):
    return num % 2 == 0

This method returns a greeting message with the given name.

Python

def greet(name):
    return f"Hello, {name}!"

Sample Program

This program defines a method that multiplies two numbers and returns the product. Then it calls the method and prints the result.

Python

def multiply(x, y):
    return x * y

result = multiply(4, 5)
print(f"4 times 5 is {result}")

Important Notes

You can return any type of value: numbers, text, lists, or even other methods.

If a method does not have a return statement, it returns None by default.

Use return values to keep your code clean and easy to understand.

Summary

Methods with return values give back a result to use later.

Use return to send the result out of the method.

Returned values help make your code reusable and organized.