Multiple inheritance

Definition

Multiple inheritance allows a class to inherit attributes and methods from more than one parent class. This can lead to complex hierarchies but provides a way to integrate diverse functionalities.

5 Must Know Facts For Your Next Test

1. Python supports multiple inheritance, using a comma-separated list of parent classes in the class definition.
2. The method resolution order (MRO) determines the order in which base classes are searched when executing a method.
3. Potential conflicts arise if multiple parent classes have methods with the same name; Python resolves these using MRO.
4. The super() function can be used in multiple inheritance to call methods from parent classes without explicitly naming them.
5. Mixins are a common use case for multiple inheritance, where additional functionality is added to classes without forming a single deep hierarchy.

Review Questions

• What is the method resolution order (MRO) and why is it important in multiple inheritance?
• How does Python resolve method name conflicts in multiple inheritance scenarios?
• What role do mixin classes play in multiple inheritance?

Related terms

Inheritance:

A mechanism where one class inherits attributes and methods from another, promoting code reuse.

Mixin Class: A type of class used to provide optional features to other classes through multiple inheritance.

super() Function: A built-in function used to call methods from a parent or sibling class, aiding in cooperative multiple inheritance.