Whats the difference between a loop, function and a class?

Hi there! Wow this is a rather big question, but I like it! It's one of those concept type questions. So I'll try and make it brief and a general overview, although I can guarantee you that if you continue down the Python path (or really most any of the other programming courses here) you will learn a lot about all three.

Ok so you can think of a class as a sort of "cookie cutter". Imagine for example that you have a house. Every house has a roof, a color, an address, a number of doors, number of windows, dimensions etc. Every time you make a new instance of that class (or an object as it's called) you create a new house with a roof, a color(maybe this one is pink but the previous house was blue), a number of doors, number of windows, and new dimensions. Now besides having properties (the variables stored inside the class) they might also have methods. Methods are functions specifically associated with a class. You might have a method named clean and every time you run that method on any instance of a house, someone comes in and cleans the house. Boy, I'd love that method on mine!

Now for functions: a function is a piece of code you can run over and over again simply by calling it. All methods are functions, but not all functions are methods. You can have a function that isn't tied to a class and is sort of free-floating in your code and will execute every time you call it. But all functions defined within a class are called methods.

Loops: A loop is a piece of code that runs over and over again until the condition is false. Or in the case of a for in loop until the number of items to iterate over has reached an end. A loop can be just about anywhere in your code. It can even be inside a function or method.

Hope this helps, but let me know if anything is unclear!