Python super() Built in Function

The super() function in Python is a built-in function that allows you to access the methods and properties of a parent class from a child class. It can also take optional arguments that specify the subclass and an instance of that subclass.

Here are some examples of using the super() function:

# Example 1: Calling parent constructor from child constructor
class Vehicle:
    def __init__(self):
        print('Vehicle __init__() called')

class Car(Vehicle):
    def __init__(self):
        super().__init__() # same as Vehicle.__init__(self)
        print('Car __init__() called')

car = Car()
# Output:
# Vehicle __init__() called
# Car __init__() called
# Example 2: Calling parent method from child method
class Animal:
    def sound(self):
        print('Animal sound')

class Dog(Animal):
    def sound(self):
        super().sound() # same as Animal.sound(self)
        print('Woof woof')

dog = Dog()
dog.sound()
# Output:
# Animal sound
# Woof woof
# Example 3: Using super() with multiple inheritance
class A:
    def hello(self):
        print('Hello from A')

class B(A):
    def hello(self):
        print('Hello from B')
        super().hello()

class C(A):
    def hello(self):
        print('Hello from C')
        super().hello()

class D(B,C): # order matters!
    def hello(self):
        print('Hello from D')
        super().hello()

d = D()
d.hello()
# Output:
# Hello from D
# Hello from B
# Hello from C
# Hello from A

If you have any questions about this code, you can drop a line in comment.

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