.. _abstract-method:

abstract-method / W0223
=======================

**Message emitted:**

Method %r is abstract in class %r but is not overridden

**Description:**

*Used when an abstract method (i.e. raise NotImplementedError) is not overridden in concrete class.*


**Correct code:**

.. code-block:: python

  class Pet:
      def make_sound(self):
          raise NotImplementedError
  
  
  class Cat(Pet):
      def make_sound(self):
          print("Meeeow")
  
  
  import abc
  
  
  class WildAnimal:
      @abc.abstractmethod
      def make_sound(self):
          pass
  
  
  class Panther(WildAnimal):
      def make_sound(self):
          print("MEEEOW")


**Problematic code:**

.. code-block:: python

  class Pet:
      def make_sound(self):
          raise NotImplementedError
  
  
  class Cat(Pet):  # [abstract-method]
      pass
  
  
  import abc
  
  
  class WildAnimal:
      @abc.abstractmethod
      def make_sound(self):
          pass
  
  
  class Panther(WildAnimal):  # [abstract-method]
      pass




Created by ``classes`` checker