OOP Lecture 06

OOP? Stands for object oriented programming. You’ve been using it all along. Anything you use the dot ‘.’ on is an object.

Methods and Variables Objects have methods and variables # Getting a variable self.rect.x # Using a method mylist.append(54) # Getting a variable self.rect.x # Using a method mylist.append(54)

Classes All objects belong to a class Objects are instances of a class Classes are like a blueprint for objects

Making Classes class Ball(): def __init__(self, name): self.bounce = False self.name = name class Ball(): def __init__(self, name): self.bounce = False self.name = name

Abstraction Getting all the necessary information for you needs.

Adding Methods class Ball(): def __init__(self, name): self.bounce = 5 self.name = name def bounce_ball(self): self.bounce = True class Ball(): def __init__(self, name): self.bounce = 5 self.name = name def bounce_ball(self): self.bounce = True

Using the Classes This means instantiating them, and creating different versions of them ball1 = Ball("Tennis") ball2 = Ball("Basket") ball3 = Ball("Base") ball1.bounce_ball() print ball1.name print ball1.bounce print ball2.bounce ball1 = Ball("Tennis") ball2 = Ball("Basket") ball3 = Ball("Base") ball1.bounce_ball() print ball1.name print ball1.bounce print ball2.bounce

Calling Methods Methods are functions on objects. We call them using the ‘.’ operator

Student Class

Inheritance