Class and Object

Class and Object

Python is an object oriented programming language. Almost everything in Python is an object, with its properties and methods.

A Class is like an object constructor, or a "blueprint" for creating objects.

Example :

example.py

class students:
  full_name = ''
  roll_no = ''

  def ShowStudent(self):
    print(self.full_name)
    print(self.roll_no)

chaitali = students()
chaitali.full_name = "Chaitali"
chaitali.roll_no = 123
chaitali.ShowStudent()

sahil = students()
sahil.full_name = "Sahil"
sahil.roll_no = 124
sahil.ShowStudent()

Output

Chaitali
123
Sahil
124

In the above example, we are creating the Students class in this class we are declare two variables that's name is full_name & roll_no. And to create the showStudent() function with the pass self parameter.

So, we are create object for class Students that is chaitali with the help of chaitali object we are calling full_name & roll_no again create one object for Students that name is sahil, Similarly we are calling full_name & roll_no with the sahil object.

Getter and Setter in Python

Getter :

Getter Method is use to provide a data.

Setter :

Setter Method is use to set or manipulate data.

set & get.py

class student:
  name = ''
  roll_no = ''

  def setStudent(self,name,roll_no):
    self.name = name
    self.roll_no = roll_no
  
  def getStudents(self):
    print("Name : ",self.name)
    print("Roll No : ",self.roll_no)

kavita = student()
kavita.setStudent("Kavita","123")
kavita.getStudents()

Output

Name : Kavita
Roll No : 123

In the above example, we are creating the Student class in this class we are declare two variables that's name is Name & roll_no. And to create the two functions that's name is setStudent() & getStudents with the pass self parameter.

So, we are create object for class Student that is kavita with the help of kavita object we are calling setStudent() & getStudents in the setStudent we are pass two parameter for Name & roll_no