What is OOPS?

General Definition

Object-oriented programming (OOP) is a way of writing computer programs using “objects” to stand for data and methods.

Object-Oriented Programming methodologies:

• Inheritance
• Polymorphism
• Encapsulation
• Abstraction ### Python oops concepts Major OOP (object-oriented programming) concepts in Python include Class, Object, Method, Inheritance, Polymorphism, Data Abstraction, and Encapsulation. ## Classes ### Syntax Class is defined under a “Class” Keyword.

class class1(): // class 1 is the name of the class
class class1(): // class 1 is the name of the class
class class1(): // class 1 is the name of the class

Enter fullscreen mode Exit fullscreen mode

## Objects:
Objects are an instance of a class. It is an entity that has state and behavior. In a nutshell, it is an instance of a class that can access the data

Syntax

obj = class1()
obj = class1()
obj = class1()

Enter fullscreen mode Exit fullscreen mode

Creating an Object and Class in python:

class employee():
    def __init__(self,name,age,id,salary):   //creating a function
        self.name = name // self is an instance of a class
        self.age = age
        self.salary = salary
        self.id = id
emp1 = employee("harshit",22,1000,1234) //creating objects
emp2 = employee("arjun",23,2000,2234)
print(emp1.__dict__)//Prints dictionary
class employee():
    def __init__(self,name,age,id,salary):   //creating a function
        self.name = name // self is an instance of a class
        self.age = age
        self.salary = salary
        self.id = id

emp1 = employee("harshit",22,1000,1234) //creating objects
emp2 = employee("arjun",23,2000,2234)
print(emp1.__dict__)//Prints dictionary
class employee():
    def __init__(self,name,age,id,salary):   //creating a function
        self.name = name // self is an instance of a class
        self.age = age
        self.salary = salary
        self.id = id

emp1 = employee("harshit",22,1000,1234) //creating objects
emp2 = employee("arjun",23,2000,2234)
print(emp1.__dict__)//Prints dictionary

Enter fullscreen mode Exit fullscreen mode

Inheritance

It generally means “inheriting or transfer of characteristics from parent to child class without any modification”. The new class is called the derived/child class and the one from which it is derived is called a parent/base class.

Polymorphism

Polymorphism is one of the core concepts in OOP languages. It describes the concept that different classes can be used with the same interface. Each of these classes can provide its own implementation of the interface. Java supports two kinds of polymorphism. You can overload a method with different sets of parameters.

Encapsulation

Encapsulation is an Object Oriented Programming concept that binds together the data and functions that manipulate the data, and that keeps both safe from outside interference and misuse

原文链接：OOPS IN PYTHON