Python Functions: How to Write and Use Them in Your Code

Python Functions: How to Write and Use Them in Your Code

Photo: Wikimedia Commons Python functions let you group code together so you can run it whenever you want without typing it twice. If you copy and paste the same lines three times in your script, you need a function. It saves your time and stops small typos from breaking your work. Think of a function like a button on a microwave. You press one button to heat your food for thirty seconds. You do not re-wire the machine every time you get hungry. In Python, you write the steps once, give them a name, and call that name whenever you need those steps executed. What Is a Python Function and Why Do You Need It? A function is simply a saved block of code that does one specific job. When you write code for a game, a website, or a simple math tool, you quickly notice that some tasks happen over and over. A function keeps your main code short and tidy. Imagine you run an online store. You need to add five percent sales tax to every customer purchase. Without functions, you write the tax calculation…