Abstract Class and Abstract Method in Python. Inheritance allows us to create (child) classes that are built upon existing (parent) classes. However, sometimes we don't want to create instances of a parent class. In that case, we can create an abstract base class with at least one abstract method. Abstract base classes cannot be instantiated, and abstract methods must be overridden. To create an abstract class in python, we need to use the abc module (abstract base class) and have a base class inherit ABC, and have at least one method with the abstractmethod decorator.

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