OOP Principles

Learning Objectives Define the concepts of a class and an object. Explain the principle of Encapsulation using a real-world analogy. Describe the principle of Inheritance and how it promotes code reuse. Identify an example of Polymorphism. Write a simple class definition with attributes and methods in pseudocode. Create an object (instance) from a class. Ever wondered how video games create thousands of different enemies or characters that all share some common traits but also have unique abilities? 🤔 Let's find out! This lesson introduces Object-Oriented Programming (OOP), a powerful way to organize code. We will learn the core principles that help programmers build complex, reusable, and easy-to-manage software by thinking about code in terms of real-world objects....

TermDefinitionExample ClassA blueprint or template for creating objects. It defines a set of properties (attributes) and behaviors (methods) that all objects of that type will have.A `Car` class could define that all cars have a `color` and a `max_speed` (attributes), and can `start_engine()` and `drive()` (methods). ObjectA specific instance of a class. It's the actual thing created from the blueprint, with its own specific values for its attributes.If `Car` is the class, a red Ferrari is an object, and a blue Honda is another object. Both are cars, but they are separate instances with different colors. EncapsulationThe bundling of data (attributes) and the methods that operate on that data into a single unit (a class). It also involves restricting direct access to some of an object...

Class Definition Syntax CLASS ClassName: ATTRIBUTE attribute_name = initial_value METHOD method_name(parameters): // code to perform an action Use this pattern to create a blueprint for your objects. `CLASS` is the keyword, followed by a capitalized name. Inside, you define the data (attributes) and behaviors (methods) for the class. Object Instantiation variable_name = ClassName() This is how you create an actual object from a class blueprint. The `ClassName()` part calls the class's constructor to build a new instance, which you then store in a variable. Method Calling object_variable.method_name(arguments) Once you have an object, you can make it perform its actions by calling its methods. Use the object's variable name, a dot (.), the method na...