[Aug 25, 2023] Fast Exam Updates PCPP-32-101 dumps with PDF Test Engine Practice
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Python Institute PCPP-32-101 certification exam is a valuable credential for individuals looking to demonstrate their skills in Python programming. PCPP1 - Certified Professional in Python Programming 1 certification is recognized globally and is designed to validate an individual's proficiency in the language. By passing the exam, candidates can enhance their career prospects and demonstrate their commitment to professional development.
NEW QUESTION # 21
Select the true statements related to PEP 8 programming recommendations for code writing. (Select two answers:)
- A. You should not write string literals that rely on significant trailing whitespaces as they may be visually indistinguishable, and certain editors may trim them
- B. You should make object type comparisons using the ismstanceQ method (e.g. if isinstance (obj, int) :) instead of comparing types directly (eg if type(obj) is type(i)).
- C. You should write code in a way that favors the CPython implementation over PyPy, Cython. and Jython.
- D. You should use the not ... is operator (e.g. if not spam is None:), rather than the is not operator (e.g.if spam is notNone:), to increase readability.
Answer: A,B
Explanation:
Explanation
The two true statements related to PEP 8 programming recommendations for code writing are Option B and Option D.
Option B is true because PEP 8 recommends making object type comparisons using the isinstance() method instead of comparing types directly 1.
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 them 1.
NEW QUESTION # 22
Select the true statements about the sqlite3 module. (Select two answers.)
- A. The execute method allows you to perform several queries at once
- B. The fetchalt method returns None when no rows are available
- C. The execute method is provided by the Cursor class
- D. The fetchone method returns None when no rows are available
Answer: C,D
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 # 23
Look at the following code snippets and decide which ones follow PEP 8 recommendations for whitespacesin expressions and statements(Select two answers.)
- A. A whitespace immediately before a comma,semicolon, and colon:
- B. No whitespace immediately before the opening parenthesis that starts the list of arguments of a function call:
- C. A whitespace immediately after the opening parenthesis that starts indexing or slicing:
- D. No whitespace between a trailing comma and a following closing parenthesis:
Answer: B,D
Explanation:
Explanation
Option A is true because PEP 8 recommends avoiding extraneous whitespace immediately inside parentheses, brackets or braces 1.
Option C is true because PEP 8 recommends avoiding extraneous whitespace between a trailing comma and a following close parenthesis 1.
NEW QUESTION # 24
What is true about the unbind_all () method?
(Select two answers.)
- A. It can be invoked from any widget
- B. It causes all the widgets to disappear
- C. It can be invoked from the main window widget only
- D. It is parameterless
Answer: A,D
Explanation:
Explanation
The unbind_all() method in Tkinter is used to remove all event bindings from a widget. It is a method of the widget object and can be called on any widget in the Tkinter application. Therefore, option A is the correct answer.
Option B is incorrect because the method can be called on any widget, not just the main window widget.
Option C is correct as unbind_all() does not take any parameters.
Option D is incorrect because the method only removes event bindings and does not cause the widgets to disappear.
So, the correct answers are A and C.
References:
* Tkinter documentation: https://docs.python.org/3/library/tkinter.html#event-bindings
* Tkinter tutorial: https://www.python-course.eu/tkinter_events_binds.php
NEW QUESTION # 25
If purple can be obtained from mixing red and blue, which color codes represent the two ingredients? Select two answers)
- A. #000000
- B. #FFFFFF
- C. #0000FF
- D. #FF0000
Answer: C,D
NEW QUESTION # 26
Select the true statements about the sqirte3 module. (Select two answers.)
- A. The sqhte3 module does not support transactions.
- B. The sqlite3 module provides an interface compliant with the DB-API 2.0.
- C. The fetchall method returns an empty list when no rows are available
- D. The special name memory is used to create a database in RAM.
Answer: B,D
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 # 27
What does the term deserialization mean? Select the best answer.
- A. It is another name for the data transmission process
- B. It is a process of creating Python objects based on sequences of bytes.
- C. It is a process of assigning unique identifiers to every newly created Python object
- D. It is a process of converting the structure of an object into a stream of bytes
Answer: B
Explanation:
Explanation
answer A. Deserialization is the process of converting data that has been serialized or encoded in a specific format, back into its original form as an object or a data structure in memory. In Python, this typically involves creating Python objects based on sequences of bytes that have been serialized using a protocol such as JSON, Pickle, or YAML.
For example, if you have a Python object my_obj and you want to serialize it to a JSON string, you might do something like this:
importjson
serialized_obj = json.dumps(my_obj)
To deserialize the JSON string back into a Python object, you would use the json.loads() method:
deserialized_obj = json.loads(serialized_obj)
This would convert the JSON string back into its original Python object form.
NEW QUESTION # 28
Which one of the following methods allows you to debug an XML tree in the xml.etree ELementTree module?
- A. parse
- B. dump
- C. log
- D. debug
Answer: B
Explanation:
Explanation
The dump() method in the xml.etree.ElementTree module allows you to output a debug representation of an XML tree to a file or standard output. This method is useful for analyzing the structure of the tree and tracking down errors.
NEW QUESTION # 29
Which of the following will set the button text's font to 12 point italics Anal? (Select two answers)
- A.
- B.
- C.
- D.
Answer: B,C
Explanation:
Explanation
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.
NEW QUESTION # 30
What will happen if the mamwindow is too small to fit all its widgets?
- A. The widgets will be scaled down to fit the window's size.
- B. The window will be expanded.
- C. Some widgets may be invisible
- D. An exception will be raised.
Answer: C
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 # 31
Select the true statement about composition
- A. Composition allows a class to be projected as a container of different classes
- B. Composition is based on the has a relation: so it cannot be used together with inheritance.
- C. Composition is a concept that promotes code reusability while inheritance promotes encapsulation.
- D. Composition extends a class's capabilities by adding new components and modifying the existing ones.
Answer: A
Explanation:
Explanation
Composition is an object-oriented design concept that models a has-a relationship. In composition, a class known as composite contains an object of another class known as component. In other words, a composite class has a component of another class1.
Composition allows a class to be projected as a container of different classes.
Composition is a concept in Python that allows for building complex objects out of simpler objects, by aggregating one or more objects of another class as attributes. The objects that are aggregated are generally considered to be parts of the whole object, and the containing object is often viewed as a container for the smaller objects.
In composition, objects are combined in a way that allows for greater flexibility and modifiability than what inheritance can offer. With composition, it is possible to create new objects by combining existing objects, by using a container object to host other objects. By contrast, with inheritance, new objects extend the behavior of their parent classes, and are limited by that inheritance hierarchy.
References:
* Official Python documentation on
Composition: https://docs.python.org/3/tutorial/classes.html#composition
* GeeksforGeeks article on Composition vs
Inheritance: https://www.geeksforgeeks.org/composition-vs-inheritance-python/
* Real Python article on Composition and
Inheritance: https://realpython.com/inheritance-composition-python/
NEW QUESTION # 32
Look at the following examples of comments and docstrings in PythonSelect the ones that are useful and compliant with PEP 8 recommendations (Select the two best answers.) A)
- A.
- B.
- C.
- D.
Answer: B,D
Explanation:
Explanation
According to PEP 8 recommendations, the two best options are Option B and Option D.
Option B follows PEP 8's suggestion that all lines should be limited to 79 characters and for longer blocks of text like docstrings or comments, the length should be limited to 72 characters1. Option D follows PEP 8's conventions for writing good documentation strings (a.k.a. "docstrings") which are immortalized in PEP
257. It suggests writing docstrings for all public modules, functions, classes, and methods2.
NEW QUESTION # 33
Select the true statements about the json.-dumps () function. (Select two answers.)
- A. It returns a JSON string.
- B. It takes a JSON string as its argument
- C. It takes Python data as its argument.
- D. It returns a Python entity.
Answer: A,C
Explanation:
Explanation
The json.dumps() function is used to convert a Python object into a JSON string 1. It takes Python data as its argument, such as a dictionary or a list, and returns a JSON string.
NEW QUESTION # 34
Select the true statement about the socket. gaierror exception.
- A. It is raised when an address-related error caused by the getaddrinfo () and getnameinfo () functions occurs.
- B. It is raised when an address-related error caused by the repr () function occurs.
- C. It is raised when a timeout occurs on a socket.
- D. It is raised when a system function returns a system-related error.
Answer: A
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 # 35
Analyze the following snippet and select the statement that best describes it.
- A. The code is an example of explicitly chained exceptions.
- B. The code is an example of implicitly chained exceptions.
- C. The code is erroneous as the OwnMath class does not inherit from any Exception type class
- D. The code is fine and the script execution is not interrupted by any exception.
Answer: A
Explanation:
Explanation
In the given code snippet, an instance of OwnMath exception is raised with an explicitly specified __cause__ attribute that refers to the original exception (ZeroDivisionError). This is an example of explicitly chaining exceptions in Python.
NEW QUESTION # 36
What is true about the unbind () method? (Select two answers.)
- A. It is invoked from within a widget's object
- B. It needs a widget's object as an argument
- C. It is invoked from within the events object
- D. It needs the event name as an argument
Answer: A,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 # 37
Select the true statements about the following invocation:
(Select two answers.)
- A. It addresses a service located at the following address local.host.com.
- B. It addresses a service deployed at localhost (the host where the code is run).
- C. It addresses a service whose timeout is set to 3000 ms.
- D. It addresses a service listening at port 3000.
Answer: B,D
Explanation:
Explanation
It addresses a service deployed at localhost (the host where the code is run).
This statement is true because localhost is a special hostname that refers to the local machine or the current host where the code is run. It is equivalent to using the IP address 127.0.0.1, which is the loopback address of the network interface. By using localhost as the hostname, the invocation addresses a service that is deployed on the same machine as the client.
It addresses a service listening at port 3000.
This statement is true because port 3000 is the part of the URL that follows the colon after the hostname. It specifies the port number where the service is listening for incoming requests. A port number is a 16-bit integer that identifies a specific process or application on a host. By using port 3000, the invocation addresses a service that is listening at that port.
It addresses a service whose timeout is set to 3000 ms.
This statement is false because timeout is not a part of the URL, but a parameter that can be passed to the requests.get () function in Python. Timeout specifies how long to wait for the server to send data before giving up. It is measured in seconds, not milliseconds. By using timeout=3, the invocation sets the timeout to 3 seconds, not 3000 ms.
It addresses a service located at the following address local.host.com.
This statement is false because local.host.com is not the same as localhost. Local.host.com is a fully qualified domain name (FQDN) that consists of three parts: local, host, and com. It requires DNS resolution to map it to an IP address. Localhost, on the other hand, is a special hostname that does not require DNS resolution and always maps to 127.0.0.1. By using localhost as the hostname, the invocation does not address a service located at local.host.com.
References:
https://docs.python.org/3/library/requests.html : https://en.wikipedia.org/wiki/Localhost :
https://en.wikipedia.org/wiki/Port_(computer_networking) :
https://en.wikipedia.org/wiki/Fully_qualified_domain_name
NEW QUESTION # 38
Which of the following values can be returnedby the messagebox. askquestion () method?
- A. "accept:" and "cancel''
- B. True and False
- C. l and o
- D. "yes" and "no"
Answer: D
Explanation:
Explanation
The messagebox.askquestion() method in Python's tkinter library displays a message box with a specified question and two response buttons labeled "Yes" and "No". It returns a string indicating which button was selected - either "yes" or "no".
This function is used to ask questions to the user that have only two options: YES or NO. It can be used to ask the user if they want to continue or if they want to submit something 1.
NEW QUESTION # 39
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