How to call method of another class in your class in Python

In this tutorial, I am gonna show you how to access the method of another class from your class or child class by using dot(.) operator.

Call method from another class in a different class in Python

we can call the method of another class by using their class name and function with dot operator.
for Example:-
if the 1st class name is class A and its method is method_A
and the second class is class B and its method is method_B
then we can call method_A from class B by following way:

class A:
     method_A(self):
      {}
class B:
     method_B(self):
     A.method_A()   (like this ....)
     {}

   
Details:
         A: class name
         .: dot operator
method_A(): method of class A. 

 

now I am gonna create a 1st parent class which has a method name sum which will return the sum of 2 nos.

#create parent class whose method is called by your class 
class parent:
    def sum(self,a,b):
        return a+b

now I am going to create another class from there we will call sum method of a parent class.

class your_class:
    def Fun(self,a,b):
        self.a=a
        self.b=b
        '''
        we can call method of another class
        by using their class name and function with dot operator.
        '''
        x=parent.sum(self,a,b)
        print("sum=",x)

Complete code in a single window:

Python program to call a method from another class

#create parent class whose method is called by your class 
class parent:
    def sum(self,a,b):
        return a+b
class your_class:
    def Fun(self,a,b):
        self.a=a
        self.b=b
        '''
        we can call method of another class
        by using their class name and function with dot operator.
        '''
        x=parent.sum(self,a,b)
        print("sum=",x)
#class object of child class or 
ob=your_class()
x=int(input("enter 1st no.\n"))
y=int(input("enter 2nd no.\n"))
#fuction call of your class
ob.Fun(x,y)

Run this code online

Output:

enter 1st no.6
enter 2nd no.5
sum= 11

You may also read:

• An introduction to classes and objects in python
• Concept of Inheritance, Superclass and Subclass in Python

5 responses to “How to call method of another class in your class in Python”

1. shaik.mohammed arshad says:

   January 28, 2021 at 7:57 pm

   I think a little bit explanation about how the method from class parent is accessed without
   creating an object to the parent class

   Reply
2. Shan says:

   February 3, 2022 at 1:42 am

   what if these classes are different py files ?

   Reply
3. junior tiro says:

   April 6, 2022 at 4:16 am

   hello, thanks for your tutorial I am viewing it over in Papua new guinea and i am very blessed.

   I have one question. and that is please can you explain the difference between class, main and function and how to combine them self.

   Reply
4. marc says:

   April 28, 2022 at 8:56 pm

   this was amazing. Thankyou for your valuable explanation

   Reply
5. Sudip says:

   June 15, 2022 at 8:54 pm

   Import this class from another file to current file.

   Reply