The Fission Theory: This theory proposes that the Moon was once part of the Earth and somehow separated from the Earth early in the history of the solar system.
When you actually use that class to make a THING, this is what you make. A method is a bit of code that can be called when needed (often as part of an class, but not always) Here's an example: I write a class called Ball. In my main code, I then write a=Ball.new, b=Ball.new, c=Ball.new.
In Python, all functions (and as such also methods) are objects which can be passed around and played with. So the difference between unbound and bound methods is: 1) Bound methods. Bound methods are methods that belong to instances of a class. In this example, instance.method is bound to the instance called instance.