ExamAdept

What is the purpose of the __annotations__ attribute in Python classes?

A:

To define class attributes

B:

To create a new instance of the class

C:

To store type annotations for class attributes and methods

D:

To access superclass attributes directly

Answer: C

The __annotations__ attribute is used to store type annotations for class attributes and methods, providing information about the expected data types.

📖

How can you achieve method overriding in Python using the @abstractmethod decorator?

A:

By directly using the @abstractmethod decorator on the overridden method

B:

By using the @override decorator

C:

By using the @implements decorator

D:

Method overriding is not possible using @abstractmethod

Answer: A

Method overriding in Python can be achieved by using the @abstractmethod decorator on the method in the superclass and implementing it in the subclass.

📖

In Python, what is the purpose of the __call__() method in a metaclass?

A:

To create a new instance of the metaclass

B:

To define class attributes for the metaclass

C:

To customize the behavior when an instance of the metaclass is called

D:

To access superclass attributes directly

Answer: C

The __call__() method in a metaclass is used to customize the behavior when an instance of the metaclass is called, allowing customization of class creation.

📖

What is the purpose of the __missing__() method in Python classes?

A:

To define class attributes

B:

To create a new instance of the class

C:

To customize the behavior when a key is not found in a class used as a dictionary

D:

To access superclass attributes directly

Answer: C

The __missing__() method is used to customize the behavior when a key is not found in a class used as a dictionary.

📖

What is the purpose of the __subclasshook__() method in Python classes?

A:

To define class attributes

B:

To create a new instance of the class

C:

To customize the behavior when checking for subclass relationships

D:

To access superclass attributes directly

Answer: C

The __subclasshook__() method is used to customize the behavior when checking for subclass relationships, providing a way to influence the issubclass() function.

📖

Questions for: Inheritance