Free PCPP1 Exam Questions - Easiest Way for Success

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Total 564 Questions | Updated On: Sep 14, 2024

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Question 1

Suppose you have the following class:

1. class ProductionLine:

2. def __init__(self, capacity):

3. self.capacity = capacity

You've created two instances of this class:

1. prod1 = ProductionLine(100)

2. prod2 = ProductionLine(200)

What is the result of the following operation?

A : prod1 + prod2

B : 300

C : 200

D : This code will raise the TypeError exception. Unsupported operation.

E : 100

Answer: D

Question 2

Select all true statements about Python docstrings with regard to PEP 257. (select 3)

A : Multi-line docstrings consist of a summary line just like a one-line docstring, followed by a blank line, followed by a more elaborate description.

B : A docstring should occur as the first statement in a module, function, class, or method definition.

C : For consistency, you should always use triple quotes - '''This is a docstring.''' around docstrings.

D : The one-line docstring prescribes the function or method’s effect as a command (“Do this”, “Return that”), not as a description; e.g. don’t write “Returns the pathname …”.

Answer: A,B,D

Question 3

Consider the following Python code snippet:

1. class Meta(type):

2. def __new__(cls, name, bases, attrs):

3. new_class = super().__new__(cls, name, bases, attrs)

4. new_class.instances = 0

5. original_init = new_class.__init__

7. def new_init(self, *args, **kwargs):

8. new_class.instances += 1

9. original_init(self, *args, **kwargs)

10.

11. new_class.__init__ = new_init

12. return new_class

13.

14.

15. class MyClass(metaclass=Meta):

16. pass

17.

18.

19. a = MyClass()

20. b = MyClass()

21. c = MyClass()

What will be the output of print(MyClass.instances)?

A : 0

B : An AttributeError will be raised.

C : 1

D : 3

Answer: D

Question 4

Suppose you have the following code:

class ClientList(list):

def search_email(self, value):

result = [client for client in self if value in client.email]

return result

class Client:

all_clients = ClientList()

def __init__(self, name, email):

self.name = name

self.email = email

Client.all_clients.append(self)

Select all true statements. (select 2)

A : all_clients attribute is an example of an instance attribute of Client class.

B : all_clients is a class attribute of Client class.

C : name and email attributes are examples of instance attributes of Client class.

D : search_email attribute is an example of an instance attribute of ClientList class.

Answer: B,C

Question 5

What is the main reason for subclassing a built-in class?

A : It allows you to override all the parent's methods.

B : It allows you to get a new class that can enrich parent's methods.

C : It allows you to avoid any intellectual rights issues.

D : It allows you to make the code execution faster.

Answer: B

Page: 1 / 113

Total 564 Questions | Updated On: Sep 14, 2024

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