Functions are an important part of Python programming. They allow you to break up your code into smaller, more manageable pieces. Functions also help you to reuse code, making your code more efficient and easier to maintain.

To use a function in Python, you need to first define it. You can do this by using the def keyword followed by the function name, a set of parentheses, and a colon. Inside the parentheses, you can define any parameters that the function should take. After the function is defined, you can write the code that should be executed when the function is called.

Once the function is defined, you can call it by typing its name followed by the parentheses and any parameters that it should take. For example, if you defined a function called “add” that takes two numbers, you could call it like this: add(5, 10).

You can also assign the output of a function to a variable. For example, if you have a function called “multiply” that takes two numbers and returns their product, you could assign the result to a variable like this: result = multiply(5, 10).

Functions are a powerful tool for writing efficient and reusable code. With a little practice, you will soon be writing functions like a pro!