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OOPS

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Python is object oriented program
Object consists of two things (i) Data (ii) Methods

Class definition starts with CLASS key word

what is __Init__

__init__

what is self

Self denotes about current class

Syntax for constructor

Create Class:

Object Oriented Programming Language

Languages which uses Classes and Objects in their program called Object Oriented Programming Languages

In this process Primary task sun-divides into multiple sub tasks

OOPS concept considers everything as object

Each sub class is termed as Class

What is meant by Method:

Features of Object Oriented Program:

Encapsulation
Abstraction
Inheritence
Polymorphism

OOPS Encapsulation

All the program resides with in a class

Variables and Methods of class:

All the variables and Methods bind together within the class
These variables and methods termed as Members of class

We can define variables and methods outside of the class also: which is termed as PUBLIC
As each object consists of different MEMORY ADDRESS encapsulation isolates the objects from one class to another
Consequently, we can define same members in different classes

Inheritance

Inheritance is the process, which allows to create new class by retrieving Methods and variables from parent calss

In the below mentioned example parent class CALCULATION method has been executed in SUBCLASS

Polymorophism

It enables to perform same method for different operations