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In-Depth Python OOP
In-Depth Python OOP
4. Polymorphism and Abstraction
Abstract Class
Abstract Class is a class that can't have instances but can have subclasses.
To create the abstract class, you need to import the ABC
(Abstract Base Class) from the abc
built-in library:
Also, you need to inherit from class ABC
:
Now, we have the abstract class SomeClass
, but we can create instances:
In the example above, we created an instance of SomeClass
because SomeClass
does not have any abstract methods.
To create an abstract class, it should follow the following structure:
- The abstract class should inherit from the
ABC
class. - The abstract class should define one or more abstract methods.
Note
A class is not considered abstract unless it has at least one abstract method and inherits from the
ABC
(Abstract Base Class) class.
We will describe abstract methods in the next chapter.
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