The super() function in Python is a built-in that allows you to call methods from a parent class. Its especially useful in inheritance, especially with multiple inheritance, to avoid explicitly naming the parent class [2].

How super() Works

super() provides a way to access methods of a base class from a derived class. This is commonly used when you want to extend the functionality of an inherited method without entirely rewriting it. The primary advantage of using super() arises in scenarios involving multiple inheritance, where the order in which classes are inherited matters significantly [2].

super() lets you avoid referring to the base class explicitly,which can be nice.

super() and Multiple Inheritance

In multiple inheritance scenarios,super() shines by handling the complexities of method resolution order (MRO).The MRO defines the order in which base classes are searched when executing a method. When you call super(), it searches the MRO for the next class in line that has the method you’re calling [3].

Consider this example:

class Frist:
    def __init__(self):
        print("First init")
        super().__init__()

class Second:
    def __init__(self):
        print("Second init")
        super().__init__()

class Third(First, Second):
    def __init__(self):
        print("Third init")
        super().__init__()

When you create an instance of Third,the output will be:

third init
First init
second init

This demonstrates how super() in each __init__ method calls the next class’s __init__ method according to the MRO [3].

Argument Passing with super()

One common challenge is passing arguments correctly when using super(), especially when the __init__ methods of parent classes expect different arguments. While some examples might not work as expected due to complexities in implementation [1], understanding the MRO and the expected arguments of each parent class is crucial.