Object-oriented programming Quiz

// question 1 of 10

What does __init__ return?

Nothing — it always returns None A boolean indicating success The newly created object

// question 2 of 10

What is the purpose of __init__ versus a regular method?

__init__ runs automatically at creation while regular methods are called explicitly __init__ cannot take arguments other than self __init__ must always return the object

// question 3 of 10

What does __getitem__ define?

The behavior of bracket indexing on an object The way the object is iterated The way the object is printed

// question 4 of 10

What is an object in OOP?

An instance of a class A variable that holds a list A function that returns data

// question 5 of 10

What is the purpose of defining __eq__ and __hash__ together?

They must always be defined together or Python raises an error Objects used as dictionary keys need consistent equality and hash behavior They define the same behavior from different directions

// question 6 of 10

What is the is-a relationship in OOP?

A method is a function — used to justify encapsulation A Dog is an Animal — used to justify inheritance A Shelter has Animals — used to justify composition

// question 7 of 10

What keyword is used to define a class in Python?

class object def

// question 8 of 10

What is a namespace in OOP?

The scope in which names are defined — class namespace vs instance namespace A list of all method names in a class A dictionary mapping class names to their files

// question 9 of 10

What does setattr(obj, 'name', value) do?

Sets the attribute name to value on obj Raises an error if the attribute already exists Creates a new method on obj

// question 10 of 10

What is the has-a relationship in OOP?

An attribute has a value — used to justify encapsulation A Shelter has Animals — used to justify composition A Dog is an Animal — used to justify inheritance

Blog
Resources
About
Contact

Privacy Policy
Terms & Conditions