A developer is designing a class for a thermostat. The temperature should not be set below 10 or above 30 degrees. To enforce this constraint, which approach is best?

Use a class attribute temperature and update it globally.

Use a private attribute __temperature and provide a set_temperature() method that validates the range.

Use a global variable temperature and check the range in the main program.

Make the temperature attribute public and let the user set any value.

A company has a base class Shape with a method area() that returns 0. They need a subclass Circle that overrides area() to return the area of the circle. Which code correctly implements this?

class Circle(Shape): def __init__(self, radius): self.radius = radius

class Circle(Shape): def __init__(self, radius): self.radius = radius def area(self): return super().area()

class Circle(Shape): def __init__(self, radius): self.radius = radius def area(self): return 3.14 * self.radius ** 2

class Circle: def __init__(self, radius): self.radius = radius def area(self): return 3.14 * self.radius ** 2

A developer has a class Animal with an __init__ that sets self.name. They create a subclass Dog that should also set self.breed. Which code correctly initializes a Dog object?

class Dog(Animal): def __init__(self, name, breed): Animal.__init__(self, name) self.breed = breed

class Dog(Animal): def __init__(self, name, breed): super().__init__(name) self.breed = breed

class Dog(Animal): def __init__(self, breed): self.breed = breed

class Dog(Animal): def __init__(self, name, breed): self.name = name self.breed = breed

A logistics company needs to track each shipment's weight and destination. They plan to create a Shipment class. Which approach correctly creates two independent shipment objects, each with its own weight and destination?

Define class Shipment with __init__ that returns a dictionary of weight and destination.

Define class Shipment with class-level variables weight and destination, then call Shipment() twice.

Define class Shipment with __init__ setting self.weight and self.destination, then call Shipment(weight, destination) twice.

Define class Shipment with a method set_weight() and set_destination(), but no __init__.

Python InstitutePCAP - Certified Associate Python Programmer

Domain 4Objective 1

PCAP-31-03 4.1 Understand the Object-Oriented Approach 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 51 practice questions to prepare you well beyond it. (estimate)

51questions here

11free pages

7concepts

34%of the exam

Questions 31–35

31application · medium
A developer is designing a class for a thermostat. The temperature should not be set below 10 or above 30 degrees. To enforce this constraint, which approach is best?
Select an answer first
32application · medium
A company has a base class Shape with a method area() that returns 0. They need a subclass Circle that overrides area() to return the area of the circle. Which code correctly implements this?
Select an answer first
33application · medium
A developer has a class Animal with an __init__ that sets self.name. They create a subclass Dog that should also set self.breed. Which code correctly initializes a Dog object?
Select an answer first
34application · medium
A logistics company needs to track each shipment's weight and destination. They plan to create a Shipment class. Which approach correctly creates two independent shipment objects, each with its own weight and destination?
Select an answer first
35application · easy
A class Animal has a method speak() that prints 'Some sound'. A class Dog inherits from Animal and overrides speak() to print 'Woof'. What is the output of the following code? d = Dog(); d.speak()
Select an answer first

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PCAP-31-03 4.1 Understand the Object-Oriented Approach PCAP-31 Practice Questions (Page 7)

Questions 31–35

A developer is designing a class for a thermostat. The temperature should not be set below 10 or above 30 degrees. To enforce this constraint, which approach is best?

A company has a base class Shape with a method area() that returns 0. They need a subclass Circle that overrides area() to return the area of the circle. Which code correctly implements this?

A developer has a class Animal with an __init__ that sets self.name. They create a subclass Dog that should also set self.breed. Which code correctly initializes a Dog object?

A logistics company needs to track each shipment's weight and destination. They plan to create a Shipment class. Which approach correctly creates two independent shipment objects, each with its own weight and destination?

A class Animal has a method speak() that prints 'Some sound'. A class Dog inherits from Animal and overrides speak() to print 'Woof'. What is the output of the following code? d = Dog(); d.speak()

Keep studying — Object-Oriented Programming

A developer has a class Animal with an init that sets self.name. They create a subclass Dog that should also set self.breed. Which code correctly initializes a Dog object?