PCPP-32-101 Exam Dumps and Practice Questions

In Python,typeis the built-in metaclass that serves as the base class for all new-style classes. All new-style classes in Python, including built-in types likeintandstr, are instances of thetypemetaclass and inherit from it.

The correct answer isB. The getNumberofCrosswords() method should be decorated with @classmethod. In the given code snippet, thegetNumberofCrosswordsmethod is intended to be a class method that returns the value of thenumberofcrosswordsclass variable. However, the method is not decorated with the@classmethoddecorator and does not take aclsparameter representing the class itself. To makegetNumberofCrosswordsa proper class method, it should be decorated with@classmethodand take aclsparameter as its first argument.

1. ThegetNumberofCrosswords()method should be decorated with@classmethod.

This is because thegetNumberofCrosswords()method is intended to access the class-level variablenumberofcrosswords, but it is defined as an instance method, which requires an instance of the class to be created before it can be called. To make it work as a class-level method, you can define it as a class method by adding the@classmethoddecorator to the function.

Here's an example of how to definegetNumberofCrosswords()as a class method:

class Crossword:

numberofcrosswords = 0

def __init__(self, author, title):

self.author = author

self.title = title

Crossword.numberofcrosswords += 1

@classmethod

def getNumberofCrosswords(cls):

return cls.numberofcrosswords

In this example,getNumberofCrosswords()is defined as a class method using the@classmethoddecorator, and theclsparameter is used to access the class-level variablenumberofcrosswords.

Official Python documentation on Classes:https://docs.python.org/3/tutorial/classes.html

The json.dumps() function is used to convert a Python object into a JSON string1. It takes Python data as its argument, such as a dictionary or a list, and returns a JSON string.

1. It returns a JSON string.

This statement is true because the json.dumps () function takes a Python object as its argument and returns a JSON-formatted string that represents the object. For example, json.dumps ([1, 2, 3]) returns '[1, 2, 3]'.

The socket.gaierror exception is raised when an address-related error caused by the getaddrinfo() and getnameinfo() functions occurs. These functions are used to translate hostnames to IP addresses and vice versa, and the gaierror exception is raised if they fail to perform this translation.

Official Python documentation on socket.gaierror:https://docs.python.org/3/library/socket.html#socket.gaierror