Python L6

What is the purpose of the __init__ method in a class?

• To initialize object attributes.

• To print object details.

• To compare objects.

• To delete objects.

Which keyword is used to inherit a class in Python?

• extends

• inherits

• super

• No keyword; the class name is specified in parentheses.

class Dog:

def __init__ (self, name):

self.name = name

d = Dog("Buddy")
What does self.name = name do?

• Creates a global variable

• Assigns the argument name to the instance attribute self.name

• Deletes the name variable

• Raises an error

class Cat:

def sound(self):

return "Meow"

c = Cat()

print(c.sound())

• Meow

• sound()

• None

• Error

class Book:

def init(self, title):

self.title = title

b = Book()

What happens when this code runs?

• Creates a book with title = None

• Raises TypeError (missing title argument)

• Automatically sets title = "Untitled"

• Skips init

class Car:

def start():

return "Engine on"

c = Car()

print(c.start())
What happens?

• Raises TypeError (missing 1 positional argument: self)

• Engine on

What is a class attribute?

• An attribute unique to each instance

• An attribute shared by all instances of a class

• A private attribute that cannot be accessed

• A temporary variable in a method

How do you access an instance attribute name of an object dog?

• dog(name)

• dog->name

• dog.name

• dog["name"]

What does super().__init__() do?

• Deletes the parent class

• Calls the parent class’s init() method

• Creates a new child class

• Raises an error

Which of these is a class attribute?

class Car:

wheels = 4

def init(self, color):

self.color = color

• wheels

• Both

• color

• Neither