Introduction to Object-Oriented Programming in Python

Object-Oriented Programming (OOP)

A method of structuring a program by bundling related properties and behaviors into individual objects.

Class

A blueprint for creating objects.

Instance

An object that belongs to a class.

__init__() Method

Executed when a class is initiated; used to assign values to the properties of an object or perform other operations needed in the creation of an object.

self Parameter

A reference to the current instance of the class, used to access the variables that belong to the class.

Modify Object Properties

Changing the value of an object's property.

Delete Object Properties

Removing an object's property using the del keyword.

Methods

Functions that belong to the object.

Function

Doesn't need any object and is independent.

Method vs Function

A method is called by the object's name, while a function can be directly called by its name.

Creating Objects

The process of instantiating a class to create an object.

Deleting Objects

The process of removing an object from memory.

Object Properties

Attributes associated with an object, such as name, age, and address.

Object Behaviors

Operations that an object can perform, such as walking, talking, and sending emails.

Syntax for Deleting Property

del

Example of an Object

An object could represent a person with properties like a name, age, and address.

Example of an Email Object

An email object could have properties like a recipient list, subject, and body.

Accessing Class Variables

Using the self parameter to bind attributes with the given arguments.

Functionality of Methods

Methods operate on the data in a class.

First Parameter of Class Functions

The first parameter of any function in the class is self, but any other name can be used.

Real-World Modeling

OOP models real-world entities as software objects that have data and can perform operations.