Constructor in Python

Hello friends how are you, today in this blog i will teach you what is constructor, types of constructor , how constructor works and many programs using constructor in a very simple way.

Let's start


1.It is a special member function of class that executes when we create the instance(object) of that other word we can say that there is no need to call a constructor.
2.__init__ () method is used as a constructor in Python.
3.There are two types of constructor are used in Python.

  • Parameterized Constructor
  • Non-parameterized Constructor

  • The constructor with parameter is called Parameterized Constructor
  • It can contain a number of parameters inside the constructor and the value of parameters is passed at the time of creation of object of class.
#creating class
class Student:
    #creating parameterized constructor
    def __init__(self,name,roll):
        print("Name:", name)
#creating object
Name: Aayushi
Rollno: 305
  • The constructor with no parameter is called Non-parameterized Constructor
  • This type of constructor is also called default constructor.
  • This type of constructor is automatically called when we create object of that class.
#creating class
class Student:
    #creating non-parameterized constructor
    def __init__(self):
        print("Hi I am non-parameterized constructor")
    def Info(self):
#creating object
Hi I am non-parameterized constructor

Here in the above program we can see that non-parameterized constructor is called as object  of class is created .
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