POC Object-Oriented Programming in Python 4

Question 1

What is multiple inheritance in Python?

Accepted Answer

A class inheriting attributes and methods from more than one parent class

Answer

Creating multiple instances from a single class

Answer

Defining the same method multiple times in one class

Answer

Importing multiple modules into a class

Question 2

What is the MRO (Method Resolution Order) used for?

Accepted Answer

Determining the order in which base classes are searched when looking up a method

Answer

Sorting class attributes alphabetically

Answer

Organizing methods by execution speed

Answer

Defining the order of `__init__` calls

Question 3

What does the `@property` decorator enable?

Accepted Answer

Accessing a method as if it were an attribute (getter)

Answer

Caching a method's return value permanently

Answer

Making an attribute read-write by default

Answer

Declaring a class-level constant

Question 4

Which of the following correctly defines a class method?

Accepted Answer

@classmethod
def my_method(cls):

Answer

def my_method(self):

Answer

@staticmethod
def my_method(cls):

Answer

def my_method():

Question 5

What is encapsulation in OOP?

Accepted Answer

Bundling data and methods that operate on that data within a class, restricting direct outside access

Answer

Inheriting behavior from a parent class

Answer

Allowing a method to behave differently based on object type

Answer

Reusing code across different classes

Question 6

What is the output of the following code?
```
class Dog:
    sound = 'Woof'

d = Dog()
d.sound = 'Bark'
print(Dog.sound)
```

Accepted Answer

Woof

Answer

Bark

Answer

None

Answer

AttributeError

Question 7

Which built-in function returns all attributes and methods of an object?

Accepted Answer

dir()

Answer

vars()

Answer

help()

Answer

inspect()