Analyze the following snippet and decide whether the code is correct and/or which method should be distinguished as a class method.

Analyze the following snippet and decide whether the code is correct and/or which method should be distinguished as a class method.

A . There is only one initializer, so there is no need for a class method.
B. The getNumberofCrosswords () method should be decorated With @classmethod.
C. The code is erroneous.
D. The gexNumberOfcrosswords () and issrived methods should be decorated with @classzoechod.

View Answer

Answer: B

Explanation:

The correct answer is B. The getNumberofCrosswords() method should be decorated with @classmethod. In the given code snippet, the getNumberofCrosswords method is intended to be a class method that returns the value of the numberofcrosswords class variable. However, the method is not decorated with the @classmethod decorator and does not take a cls parameter representing the class itself. To make getNumberofCrosswords a proper class method, it should be decorated with @classmethod and take a cls parameter as its first argument.

B. The getNumberofCrosswords() method should be decorated with @classmethod. This is because the getNumberofCrosswords() method is intended to access the class-level variable numberofcrosswords, 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 @classmethod decorator to the function.

Here’s an example of how to define getNumberofCrosswords() as a class method:

classCrossword:

numberofcrosswords =0

def __init__(self, author, title):

self.author = author

self.title = title

Crossword.numberofcrosswords +=1

@classmethod

defgetNumberofCrosswords(cls):

returncls.numberofcrosswords

In this example, getNumberofCrosswords() is defined as a class method using the @classmethod decorator, and the cls parameter is used to access the class-level variable numberofcrosswords.

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