Object and constructor in python

 Object:

• An object is used to access the members of the class.
• It simply said as the short name of the class.

Constructor:

• The constructor is used to initialize the variables and sharing the values to functions.
• Further, it is mainly for object calls.
• __init__ (double underscore) is the standard function name for initializing the values.
• Self is not a keyword. It is just variable for connecting function value to constructor.
• Self is used to pass a value into the function from constructor value.

Syntax:

1. import module_name#optional

   class class_name:

       def __init__(self,parameter_list):

           self.parameter_list=variable

       def function_name(self,list_of_patameters):

           #Statements

   object_name=class_name(parameter_list)#Parameter list based on constructor

   object_name.function_name(list_of_patameters)#Function calling through object

Example program:

1. class calculator:

       def __init__(self, x, y):

           self.x = x

           self.y = y

       def add(self):

           return self.x+self.y

       def sub(self):

           return self.x-self.y

       def mul(self):

           return self.x*self.y

       def div(self):

           return self.x/self.y

   x,y=input("Enter two values: ").split()

   c=calculator(int(x),int(y))

   print("Add value:",c.add())

   print("Sub value:",c.sub())

   print("Mul value:",c.mul())

   print("Div value:",c.div())

Output:

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