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Python Object-Oriented Python Inheritance Super-Duper!


when we are already in subclass which means its going to inherit all the characteristics or the attributes then why Super function Please explain with real life example !!!

2 Answers

Michael Hulet
Michael Hulet
47,893 Points

super() is really useful to call a method on a superclass of an object. This is particularly useful when you want to override a method of a superclass of your object, but add onto the superclass's implementation instead of replace it entirely.

This is a somewhat contrived example, but let's say you have a Person object that holds a first_name and last_name and has a method called full_name() that gives back the full name of the person.

class Person():
    def __init__(self, first_name, last_name):
        self.last_name = last_name
        self.first_name = first_name

    def full_name(self):
        return self.first_name + " " + self.last_name

It's customary as a sign of respect to refer to a doctor as "Dr. <# full_name #>", but as the Person object stands now, it treats everybody the same. We can make a subclass called Doctor to fix that.

class Doctor(Person):
    def full_name(self):
        return "Dr. " + super().full_name()

Now if we make a Person object for me, calling full_name() will just give you my name, but if you make a Doctor object for my doctor, it'll refer to my doctor properly.

>>> me = Person("Michael", "Hulet")
>>> me.full_name()
'Michael Hulet'

>>> my_doctor = Doctor("Kristen", "Christensen")
>>> my_doctor.full_name()
'Dr. Kristen Christensen'

Great example, thanks!