METHOD OVERRIDING IN PYTHON

The concept of defining multiple methods with the same name and with the same number of parameters. One is in super class and another is in sub class is known as Method Overriding.

Example –

class Parent:
    def m1(self):
        print 'calling parent method'
class Child(Parent):
    def m1(self):
        print 'calling child method'
C=Child()
C.m1()
P=Parent()
P.m1()

Output –

calling child method

calling parent method

super() - When method overriding

Example –

class Parent(object):
    def altered(self):
        print 'parent altered'
class Child(Parent):
    def altered(self):
        print 'child altered'
        super(Child,self).altered()
        print 'Child.Alter after Parent altered'
dad=Parent()
son=Child()
dad.altered()
son.altered()

Output –

parent altered

child altered

parent altered

Child.Alter after Parent altered