Python: Method overriding

Python Method overriding:

Parent class:

class pclass:
...     var1="Im in parent class"
...     def add(self, number1, number2):
...             return number1 + number2


Child Class:


class cclass(pclass):
...     var1="Im in parent class"
...     def add(self, number1, number2, number3):

...             return number1 + number2+number3


Here, we override the "add" method of parent class in the child class. See the output


Output:

>> c = class()
>> c.add(1,2,3)
>> 6

So, it uses only the add method of the child class, not the parent class


Note: Child class is also called as sub class


Why overriding is required?

One reason for overriding parent's methods is because you may want special or different functionality in your subclass.