ExamAdept

What is the primary purpose of the __doc__ attribute?

A:

It stores the documentation string for a module, class, or function.

B:

It is used to access the private documentation of a class.

C:

It indicates the default values of the class attributes.

D:

It defines the documentation for a class constructor.

Answer: A

The __doc__ attribute in Python is used to access the documentation string (docstring) associated with a module, class, or function. It provides information about the purpose and usage of the code.

📖

What is the purpose of the isinstance() function?

A:

It checks if a variable is an instance of a specified class.

B:

It determines if an object has a particular attribute.

C:

It checks if two objects are of the same type.

D:

It verifies if an object is iterable.

Answer: A

The isinstance() function is used to check if a variable is an instance of a specified class or a tuple of classes. It returns True if the object is an instance of any of the given classes.

📖

What is the purpose of the @abstractmethod decorator?

A:

It creates an abstract class in Python.

B:

It indicates a method that must be implemented by any concrete (non-abstract) subclass.

C:

It is used to define a method that cannot be overridden.

D:

It marks a method as private and inaccessible from outside the class.

Answer: B

The @abstractmethod decorator is used to define abstract methods in an abstract class. Any concrete subclass must implement these abstract methods.

📖

In Python, what is the purpose of the __slots__ attribute in a class?

A:

It specifies the names of class methods.

B:

It defines the list of attributes that instances of the class can have.

C:

It indicates the inheritance hierarchy of the class.

D:

It is used to declare static variables in a class.

Answer: B

The __slots__ attribute in a class is used to explicitly declare a list of allowed attributes for instances of the class. It can help in saving memory by preventing the creation of additional instance attributes.

📖

What is the purpose of the @property decorator?

A:

It defines a property of a class that can be accessed using dot notation.

B:

It marks a method as a getter for a class attribute.

C:

It is used to create an instance variable in a class.

D:

It indicates a method that can only be accessed by the class itself.

Answer: B

The @property decorator is used to define a getter method for a class attribute. It allows the method to be accessed like an attribute without using parentheses.

📖

Questions for: Classes