from abc import abstractmethod ABC

The abc module in Python provides the abstractmethod decorator and the ABC (Abstract Base Class) class, which are used for defining abstract classes and methods.

To use these, you need to import them from the abc module. Here is an example:

from abc import abstractmethod, ABC

class MyAbstractClass(ABC):
    @abstractmethod
    def my_abstract_method(self):
        pass

    def my_concrete_method(self):
        print("This is a concrete method.")

class MyClass(MyAbstractClass):
    def my_abstract_method(self):
        print("This is the implementation of the abstract method.")

my_instance = MyClass()
my_instance.my_abstract_method()  # Output: This is the implementation of the abstract method.
my_instance.my_concrete_method()  # Output: This is a concrete method.

In the example above, MyAbstractClass is an abstract class that extends the ABC class. The @abstractmethod decorator is used to mark my_abstract_method as an abstract method, which means it must be implemented by any concrete subclass.

The my_concrete_method is a regular method that can be called directly on instances of MyClass.

When you create a subclass of an abstract class, you must provide an implementation for all the abstract methods defined in the base class. Otherwise, you will get a TypeError when trying to create an instance of the subclass.

Abstract classes cannot be instantiated directly. They are meant to serve as base classes for other classes and provide a common interface or behavior that subclasses must implement