A developer is creating a `Rectangle` class and wants the constructor to accept `width` and `height` and store them as instance attributes. Which code snippet correctly declares the constructor?

def __init__(self, width, height): width = width height = height

def __init__(width, height): self.width = width self.height = height

def __init__(self, width, height): self.width = width self.height = height

def __init__(self, width): self.width = width self.height = 1

A `Movie` class has a constructor `def __init__(self, title, year):`. Which line correctly creates a `Movie` instance for 'Inception' from 2010?

m = Movie(year=2010, title='Inception')

In a `Team` class, the constructor is `def __init__(self, name, members=None):`. The developer wants to store the `members` list as an instance attribute. Which line inside the constructor correctly does this?

self.members = members if members is not None else []

A developer defines `class Empty:` with no methods. They then write `e = Empty()`. What is the result?

An `Empty` instance is created with a `value` attribute set to `None`.

`e` is assigned the class object `Empty`.

An error occurs because `Empty` has no `__init__` method.

An `Empty` instance is created with no attributes.

A developer is refactoring a `DatabaseConnection` class. Currently, the constructor is `def __init__(self, host, port):`. The team wants to allow creating a connection with no arguments (using defaults), but also with a custom host and port. They also want to ensure that the `host` attribute is always a string. Which constructor definition best meets these requirements?

def __init__(self, host='localhost', port=5432): self.host = host self.port = port

def __init__(self, host, port): self.host = host self.port = port

def __init__(self, host='localhost', port=5432): self.host = str(host) self.port = port

def __init__(self, *args): self.host = args[0] if args else 'localhost' self.port = args[1] if len(args) > 1 else 5432

Python InstitutePCAP - Certified Associate Python Programmer

Domain 4Objective 6

PCAP-31-03 4.6 Construct and Initialize Objects PCAP-31 Practice Questions (Page 7)

Part of the Object-Oriented Programming domain, which accounts for 34% of the PCAP-31 exam. Python Institute does not publish an official question count, but from its 65-minute exam (~25–45 total, ~9–15 in this domain), expect 2–3 from this objective — we provide 48 practice questions to prepare you well beyond it. (estimate)

48questions here

10free pages

5concepts

34%of the exam

Questions 31–35

31application · easy
A developer is creating a `Rectangle` class and wants the constructor to accept `width` and `height` and store them as instance attributes. Which code snippet correctly declares the constructor?
Select an answer first
32application · easy
A `Movie` class has a constructor `def __init__(self, title, year):`. Which line correctly creates a `Movie` instance for 'Inception' from 2010?
Select an answer first
33application · medium
In a `Team` class, the constructor is `def __init__(self, name, members=None):`. The developer wants to store the `members` list as an instance attribute. Which line inside the constructor correctly does this?
Select an answer first
34application · easy
A developer defines `class Empty:` with no methods. They then write `e = Empty()`. What is the result?
Select an answer first
35expert · hard
A developer is refactoring a `DatabaseConnection` class. Currently, the constructor is `def __init__(self, host, port):`. The team wants to allow creating a connection with no arguments (using defaults), but also with a custom host and port. They also want to ensure that the `host` attribute is always a string. Which constructor definition best meets these requirements?
Select an answer first

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PCAP-31-03 4.6 Construct and Initialize Objects PCAP-31 Practice Questions (Page 7)

Questions 31–35

A developer is creating a `Rectangle` class and wants the constructor to accept `width` and `height` and store them as instance attributes. Which code snippet correctly declares the constructor?

A `Movie` class has a constructor `def init(self, title, year):`. Which line correctly creates a `Movie` instance for 'Inception' from 2010?

In a `Team` class, the constructor is `def init(self, name, members=None):`. The developer wants to store the `members` list as an instance attribute. Which line inside the constructor correctly does this?

A developer defines `class Empty:` with no methods. They then write `e = Empty()`. What is the result?

PCAP-31-03 4.6 Construct and Initialize Objects PCAP-31 Practice Questions (Page 7)

Questions 31–35

A developer is creating a `Rectangle` class and wants the constructor to accept `width` and `height` and store them as instance attributes. Which code snippet correctly declares the constructor?

A `Movie` class has a constructor `def __init__(self, title, year):`. Which line correctly creates a `Movie` instance for 'Inception' from 2010?

In a `Team` class, the constructor is `def __init__(self, name, members=None):`. The developer wants to store the `members` list as an instance attribute. Which line inside the constructor correctly does this?

A developer defines `class Empty:` with no methods. They then write `e = Empty()`. What is the result?

Keep studying — Object-Oriented Programming

A `Movie` class has a constructor `def init(self, title, year):`. Which line correctly creates a `Movie` instance for 'Inception' from 2010?

In a `Team` class, the constructor is `def init(self, name, members=None):`. The developer wants to store the `members` list as an instance attribute. Which line inside the constructor correctly does this?