Difference Between Abstract Class And Interface In Python
distinguishing between abstract class and interface in python
Difference Between Abstract Class And Interface In Python
In Python, an abstract class is a class that contains one or more abstract methods, which are defined in the class but must be implemented in its subclasses. Abstract classes can also have regular methods and attributes. On the other hand, an interface in Python is created using the `abc` module and is used to define a blueprint for classes that implement it. Interfaces can only have method signatures and cannot contain any code. Subclasses implementing an interface must provide concrete implementations for all the methods defined in the interface. Overall, the key difference between an abstract class and an interface in Python is that abstract classes can provide default implementations for methods, while interfaces cannot contain any implementation details and simply define the method signatures that must be implemented by subclasses.
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1 - In Python, an abstract class is a class that cannot be instantiated on its own and is designed to be subclassed. It can contain both implemented methods and abstract methods (methods without a body that must be implemented by subclasses). On the other hand, an interface in Python is a collection of abstract methods that a class can implement. Interfaces do not contain any implemented methods.
2) An abstract class can have both abstract methods and concrete methods, whereas an interface can only have abstract methods that must be implemented by the class that implements the interface.
3) When a class inherits from an abstract class, it can override the implemented methods and must implement the abstract methods. In contrast, when a class implements an interface, it must provide implementations for all the methods defined in the interface.
4) Python allows multiple inheritances, so a class can inherit from multiple abstract classes, but it can only implement one interface.
5) An abstract class is typically used when there is a common behavior to be shared among multiple subclasses, while an interface is used to define a set of methods that a class must implement to be considered to be of that type.
6) Abstract classes in Python are created using the ABC module from the `abc` package, while interfaces are not explicitly defined in Python as a language construct.
7) Abstract classes can provide default implementations for methods, allowing subclasses to inherit and optionally override them, whereas interfaces only define the method signatures without any implementation.
8) Abstract classes are more suitable when there is a need for some common functionality among multiple classes, whereas interfaces are more focused on defining a contract that a class must adhere to.
9) While abstract classes can define both static and instance methods, interfaces can only define instance methods that a class must implement.
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