Learn Python 3 - Lesson 10 Introduction to Classes

What does the hasattr() function call in the last line here evaluate to?

class HoldsFive:

five = 5

five_holder = HoldsFive()

hasattr(five_holder, 'five')

• True

• False

• 5

What function, defined within a class, provides instructions on what to assign to a new instance when it is created?

• __ init __

• __ create __

• init

• __ new __

What is the first argument of a method?

• The context in which the object is created. We usually name the parameter this.

• The instance of the object itself. We usually refer to it as self.

• The class itself. We usually refer to it as self.

What would be printed from the following code?

class User:

def __init__(self, name):

self.name = name

def __repr__(self):

return "Hiya {}!".format(self.name)

devorah = User("Devorah")

print(devorah)

• Hiya Devorah!

• Devorah

• Hiya devorah!

• devorah

What keyword is used to indicate the start of a class definition?

• __ init __

• def

• class

• type

What does the type() function do in Python?

• Returns a type object that contains some metadata about the class.

• Returns the class that an object implements.

• Returns a string that’s the name of the class.

• Returns an implementation of a class.

How would we create an instance of the following class?

class NiceClass:

neat_attribute = "neat"

• nice_instance = NiceClass()

• nice_instance = new NiceClass

• nice_instance = NiceClass