Classes (Python)

Definition

A Class in Python is a blueprint or template for creating objects. It defines the initial state (attributes) and behaviors (methods) that its instantiated objects will possess.

Why It Matters

Classes allow developers to manage complexity by abstracting related data and functions into a single logical structure. They form the foundation of Object-Oriented Programming (OOP) by providing a way to model real-world or abstract entities in code.

Core Concepts

• Attributes: Variables defined within a class that hold state.
• Methods: Functions defined within a class that define the behaviors of the instances.
• __init__ Method: A special method (constructor) that runs automatically when a new instance is created to initialize its attributes.
• self Parameter: A reference to the current instance of the class, allowing access to its own attributes and methods from within the class definition.

class Dog:
    def __init__(self, name, age):
        self.name = name  # Attribute
        self.age = age

    def bark(self):       # Method
        print(f"{self.name} says Woof!")

my_dog = Dog("Willie", 6)
my_dog.bark()

Connected Concepts

• Objects (Python)
• Inheritance (Python)
• Functions (Python)