Object-oriented programming Quiz

// question 1 of 10

What does a double underscore prefix on an attribute do?

Applies name mangling making it harder to access directly Makes the attribute completely inaccessible Marks it as a constant

// question 2 of 10

What is method overriding?

Calling a method with different arguments Defining two methods with the same name in one class A child class redefining a method from the parent class

// question 3 of 10

What does __iter__ define?

The behavior that makes an object iterable in a for loop The way an object is indexed with brackets The way an object is compared during sorting

// question 4 of 10

What does super() do?

Calls the parent class method or constructor Deletes an inherited method Creates a new instance of a class

// question 5 of 10

What keyword is used to define a class in Python?

def object class

// question 6 of 10

What is inheritance in OOP?

A method that returns another object A child class reusing attributes and methods from a parent class A class that stores data in a file

// question 7 of 10

What happens when you assign a value to a class attribute through an instance?

A new instance attribute is created that shadows the class attribute The class attribute is modified for all instances A TypeError is raised

// question 8 of 10

What is an object in OOP?

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

// question 9 of 10

What happens if __str__ is not defined on a class?

Python raises a TypeError when print is called Python uses the class name as the string Python falls back to __repr__ and then to the default memory address representation

// question 10 of 10

What does __str__ define?

The way two objects are compared The string representation returned by print() The length of the object

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