Free Nov-2023 UPDATED Python Institute PCPP-32-101 Certification Exam Dumps is Online
Python Institute Exam 2023 PCPP-32-101 Dumps Updated Questions
NEW QUESTION # 20
Which sentence about the property decorator is false?
- A. The property decorator marks the method whose name will be used as the name of the instance attribute
- B. The property decorator should be defined after the method that is responsible for setting an encapsulated attribute.
- C. The @property decorator designates a method which is responsible for returning an attribute value
- D. The property decorator should be defined before the methods that are responsible for setting and deleting an encapsulated attribute
Answer: B
Explanation:
Explanation
The @property decorator should be defined after the method that is responsible for setting an encapsulated attribute is a false sentence. In fact, the @property decorator should be defined before the method that is used to set the attribute value. The @property decorator and the setter and deleter methods work together to create an encapsulated attribute, which is used to provide control over the attribute's value.
NEW QUESTION # 21
Select the true statement about the socket. gaierror exception.
- A. It is raised when a timeout occurs on a socket.
- B. It is raised when an address-related error caused by the repr () function occurs.
- C. It is raised when an address-related error caused by the getaddrinfo () and getnameinfo () functions occurs.
- D. It is raised when a system function returns a system-related error.
Answer: C
Explanation:
Explanation
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.
NEW QUESTION # 22
Which of the following constants will be used if you do riot define the quoting argument in the writer method provided by the csv module?
- A. csv.QUOTE_NONE
- B. csv.QUOTE_NONNUMERIC
- C. csv.QUOTE_MINIMAL
- D. svQUOTE_ALL
Answer: C
Explanation:
Explanation
If you do not define the quoting argument in the writer method provided by the csv module, the default quoting behavior is set to QUOTE_MINIMAL. This means that fields containing special characters such as the delimiter or newline character will be quoted, while fields that do not contain special characters will not be quoted.
NEW QUESTION # 23
Which function or operator should you use to obtain the answer True or False to the question: "Do two variables refer to the same object?"
- A. The id () function
- B. The is operator
- C. The = operator
- D. The isinstanceO function
Answer: B
Explanation:
Explanation
To test whether two variables refer to the same object in memory, you should use the is operator.
The is operator returns True if the two variables point to the same object in memory, and False otherwise.
For example:
a = [1, 2, 3]
b = a
c = [1, 2, 3]
print(a is b) # True
print(a is c) # False
In this example, a and b refer to the same list object in memory, so a is b returns True. On the other hand, a and c refer to two separate list objects with the same values, so a is c returns False.
NEW QUESTION # 24
A socket object is usually created by which one of the following invocations?
- A. socket = socket.socket(server address)
- B. socket = socket. socket (socket_domain, socket_type, server_address)
- C. socket = socket. socket (socket_number)
- D. socket. socket (socket_domain, socket_type)
Answer: D
Explanation:
Explanation
A socket object is usually created using the socket() constructor provided by the socket module in Python. The correct invocation is socket.socket(socket_domain, socket_type). This creates a new socket object with the specified socket domain and type.
NEW QUESTION # 25
What is true about type in the object-oriented programming sense?
- A. It is the bottommost type that any object can inherit from.
- B. It is an object used to instantiate a class
- C. It is a built-in method that allows enumeration of composite objects
- D. It is the topmost type that any class can inherit from
Answer: D
Explanation:
Explanation
In Python, type is 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 like int and str, are instances of the type metaclass and inherit from it.
NEW QUESTION # 26
What is a static method?
- A. A method that requires no parameters referring to the class itself
- B. A method that works on the class itself
- C. A method that works on class objects that are instantiated
- D. A method decorated with the @method trait
Answer: A
Explanation:
Explanation
A static method is a method that belongs to a class rather than an instance of the class. It is defined using the @staticmethod decorator and does not take a self or cls parameter. Static methods are often used to define utility functions that do not depend on the state of an instance or the class itself.
NEW QUESTION # 27
Analyze the following snippet and decide whether the code is correct and/or which method should be distinguished as a class method.
- A. The gexNumberOfcrosswords () and issrived methods should be decorated with @classzoechod.
- B. There is only one initializer, so there is no need for a class method.
- C. The code is erroneous.
- D. The getNumberofCrosswords () method should be decorated With @classmethod.
Answer: D
Explanation:
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.
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.
NEW QUESTION # 28
The following snippet represents one of the OOP pillars Which one is that?
- A. Serialization
- B. Inheritance
- C. Polymorphism
- D. Encapsulation
Answer: D
Explanation:
Explanation
The given code snippet demonstrates the concept of encapsulation in object-oriented programming.
Encapsulation refers to the practice of keeping the internal state and behavior of an object hidden from the outside world and providing a public interface for interacting with the object. In the given code snippet, the __init__ and get_balance methods provide a public interface for interacting with instances of the BankAccount class, while the __balance attribute is kept hidden from the outside world by using a double underscore prefix.
NEW QUESTION # 29
Which of the following examples using line breaks and different indentation methods are compliant with PEP
8 recommendations? (Select two answers.)
- A.
- B.
- C.
- D.
Answer: C,D
Explanation:
Explanation
The correct answers are B. Option B and D. Option D. Both options B and D are compliant with PEP 8 recommendations for line breaks and indentation. PEP 8 recommends using 4 spaces per indentation level and breaking lines before binary operators. In option B, the arguments to the print function are aligned with the opening delimiter, which is another acceptable way toformat long lines according to PEP 8. In option D, the second line is indented by 4 spaces to distinguish it from the next logical line.
NEW QUESTION # 30
Select the true statements about the sqirte3 module. (Select two answers.)
- A. The sqlite3 module provides an interface compliant with the DB-API 2.0.
- B. The sqhte3 module does not support transactions.
- C. The special name memory is used to create a database in RAM.
- D. The fetchall method returns an empty list when no rows are available
Answer: A,C
Explanation:
Explanation
The sqlite3 module in python provides an interface compliant to the DB-API 2.0. Thus, it follows a standard performance metric that allows for consistency in database programming with python.
The special name 'memory' is used to create a database in RAM using the sqlite3 module. Thus, when you use it as the name of the database file while opening a connection, it creates a temporary database that exists only in memory.
NEW QUESTION # 31
Which of the following methods allow you to load a configuration using ConfigParser? (Select two answers.)
- A. read_conf
- B. read_str
- C. read_dict
- D. read
Answer: B,D
Explanation:
Explanation
ConfigParser is a built-in library in Python that allows you to read and write configuration files. The read method is used to read the configuration file which can be in any of the supported file formats, such as INI, YAML, and JSON. The read_dict method is used to read the configuration from a Python dictionary. The read_conf and read_str options are not valid methods in the ConfigParser module.
Therefore, the correct options to load a configuration using ConfigParser are A. read and D. read_string.
NEW QUESTION # 32
What is true about the unbind () method? (Select two answers.)
- A. It is invoked from within the events object
- B. It is invoked from within a widget's object
- C. It needs a widget's object as an argument
- D. It needs the event name as an argument
Answer: B,D
Explanation:
Explanation
Option B is true because the unbind() method is invoked from within a widget's object 1.
Option D is true because the unbind() method needs the event name as an argument 1.
The unbind() 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
NEW QUESTION # 33
What will happen if the mamwindow is too small to fit all its widgets?
- A. The window will be expanded.
- B. Some widgets may be invisible
- C. The widgets will be scaled down to fit the window's size.
- D. An exception will be raised.
Answer: B
Explanation:
Explanation
If the main window is too small to fit all its widgets, some widgets may be invisible. So, the correct answer is Option A.
When a window is not large enough to display all of its content, some widgets may be partially or completely hidden. The window will not automatically expand to fit all of its content, and no exception will be raised. The widgets will not be automatically scaled down to fit the window's size.
If the main window is too small to fit all its widgets, some of the widgets may not be visible or may be partially visible. This is because the main window has a fixed size, and if there are more widgets than can fit within that size, some of them will be outside the visible area of the window.
To avoid this issue, you can use layout managers such as grid, pack, or place to dynamically adjust the size and position of the widgets as the window changes size. This will ensure that all the widgets remain visible and properly arranged regardless of the size of the main window.
References:
* https://www.tkdocs.com/tutorial/widgets.html#managers
* https://www.geeksforgeeks.org/python-tkinter-widgets/
* https://anzeljg.github.io/rin2/book2/2405/docs/tkinter/introduction.html
NEW QUESTION # 34
Select the true statements about the sqlite3 module. (Select two answers.)
- A. The fetchone method returns None when no rows are available
- B. The execute method is provided by the Cursor class
- C. The execute method allows you to perform several queries at once
- D. The fetchalt method returns None when no rows are available
Answer: A,B
Explanation:
Explanation
The execute method is provided by the Cursor class
This statement is true because the execute method is one of the methods of the Cursor class in the sqlite3 module. The Cursor class represents an object that can execute SQL statements and fetch results from a database connection. The execute method takes an SQL query as an argument and executes it against the database. For example, cur = conn.cursor (); cur.execute ("SELECT * FROM table") creates and executes a cursor object that selects all rows from a table.
The fetchone method returns None when no rows are available
This statement is true because the fetchone method is another method of the Cursor class in the sqlite3 module.
The fetchone method fetches the next row of a query result set and returns it as a single tuple or None if no more rows are available. For example, row = cur.fetchone () fetches and returns one row from the cursor object or None if there are no more rows.
NEW QUESTION # 35
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