Classes and the concepts behind classes

Classes and the concepts behind classes are going to be one of the more complex topics you will learn in software development. We will cover them in numerous 'classes' throughout the program. But are they really necessary? Research the origins of 'classes' and outline the why, what, when, where, etc of classes. Was C++ the first language to have classes? Try to determine why Python doesn't full implement classes like C++ does. For example, Python doesn't have fully private attributes.