Python Institute PCPP1 - Certified Professional in Python Programming 1 PCPP-32-101 Exam Questions

Answer : C

The correct answer isC. Excalibur is the value passed to an instance variable. In the given code snippet,self.nameis an instance variable of theSwordclass. When an instance of theSwordclass is created withvarl = Sword('Excalibur'), the value'Excalibur'is passed as an argument to the__init__method and assigned to thenameinstance variable of thevarlobject.

The code defines a class calledSwordwith an__init__method that takes one parametername. When a new instance of theSwordclass is created withvarl = Sword('Excalibur'), the value of the'Excalibur'string is passed as an argument to the__init__method, and assigned to theself.nameinstance variable of thevarlobject.

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

Answer : B, C

Option B is correct because it sets the font option of the button to a tuple containing the font family ('Arial'), size (12), and style ('italic').

Option C is correct because it sets the font option of the button to a string containing the font family ('Arial'), size (12), and style ('italic') separated by spaces.

Answer : A, D

Option A is true because PEP 8 recommends that function and variable names should be lowercase, with words separated by underscores .

Option D is true because PEP 8 recommends that constants should be written in all capital letters with words separated by underscores .

PEP 8 is the official style guide for Python code. It provides guidelines for how to write readable code that follows consistent naming conventions. The aim of PEP 8 is to improve the readability of Python code and make it easier to understand and maintain.

According to PEP 8, variable and function names should be written in all lower-case letters with words separated by underscores, as stated in A. Constants, which are variables whose value is expected to remain constant throughout the code, should be written in all upper-case letters with words separated by underscores, as stated in D.

PEP 8 -- Style Guide for Python Code:https://www.python.org/dev/peps/pep-0008/

Python Documentation:https://docs.python.org/3/tutorial/classes.html#classmethods-and-staticmethods

Answer : A, D, D

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]'.

Answer : B, D

The two true statements related to PEP 8 programming recommendations for code writing areOption BandOption D.

Option B is true because PEP 8 recommends making object type comparisons using theisinstance()method instead of comparing types directly1.

Option D is true because PEP 8 recommends not writing string literals that rely on significant trailing whitespaces as they may be visually indistinguishable, and certain editors may trim them1.

Answer : D

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

Answer : B, D

Option B is true because theunbind()method is invoked from within a widget's object1.

Option D is true because theunbind()method needs the event name as an argument1.

Theunbind()method in Tkinter is used to remove a binding between an event and a function. It can be invoked from within a widget's object when a binding is no longer needed. The method requires the event name as an argument to remove the binding for that specific event. For example:

button = tk.Button(root, text='Click me')

button.bind('<Button-1>', callback_function) # bind left mouse click event to callback_function

button.unbind('<Button-1>') # remove the binding for the left mouse click event