Essential features of object oriented programming:-

• Data Encapsulation
• Inheritance
• Overriding
• Polymorphism

Overriding- Overriding is the feature which lets you define a parent class method. Like the name suggests, you can overriding a parent class function or a method in the child class.

Following conditions must be met for overriding a function:

1. Inheritance should be there. Function overriding cannot be done within a class. We need to derive a child class from a parent class.
2. The function that is redefined in the child class should have the same signature as in the parent class i.e. same number of parameters.

e.g.,

class company1():
    def employee(self, a):
        print("This is a parent class.")

class company2(a):
    def employee(self):
        print("Employees work")

a=company2()
a.employee()

Output- Employees work

This is all about overriding in python.