100%無料PCPP-32-101試験問題集リアルPython Institute PCPP問題集46解答を掴み取れ！
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Python Institute PCPP-32-101試験（PCPP1試験とも呼ばれます）は、Pythonプログラミング言語の熟練度をテストするために設計された認定試験です。この試験は、Pythonプログラミングに関する知識とスキルを証明したい個人向けに用意されており、データ型、制御構造、関数、モジュールなど、様々なトピックをカバーしています。
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質問 # 18
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. svQUOTE_ALL
- B. csv.QUOTE_NONNUMERIC
- C. csv.QUOTE_NONE
- D. csv.QUOTE_MINIMAL
正解：D
解説：
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.
質問 # 19
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 system function returns a system-related error.
- D. It is raised when a timeout occurs on a socket.
正解：A
解説：
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.
質問 # 20
Select the true statement about PEP 8 recommendations related to line breaks and binary operators.
- A. There is no specific PEP 8 recommendation related to using line breaks with binary operators.
- B. It is recommended that you use line breaks after binary operators to improve code readability.
- C. It is recommended that you use line breaks before binary operators to improve code readability.
- D. It is permissible to use line breaks before or after a binary operator as long as the convention is consistent locally However, for new code it is recommended that break lines should be used only after binary operators.
正解：C
解説：
Explanation
According to PEP 8, Python's official style guide, line breaks before binary operators produce more readable code, especially in code blocks with long expressions. This is stated in several sources (1,2,6,8) and is a widely accepted convention.
References:
* https://www.python.org/dev/peps/pep-0008/#should-a-line-break-before-or-after-a-binary-operator
* https://stackoverflow.com/questions/30614124/are-long-lines-broken-up-before-or-after-binary-operators-
* https://www.quora.com/What-is-PEP-8-Python
* https://www.techbeamers.com/python-tutorial-pep-8/
* https://www.section.io/engineering-education/python-coding-conventions-guidelines-for-python-programm
* https://towardsdatascience.com/a-step-in-pep8-style-guide-improving-the-readability-of-the-code-8114fd4
* https://www.codementor.io/@rishikeshdhokare/python-coding-style-best-practices-that-every-python-prog
* https://www.dataschool.io/python-pep8-tips-and-tricks/
質問 # 21
Which of the following methods allow you to load a configuration using ConfigParser? (Select two answers.)
- A. read_dict
- B. read
- C. read_str
- D. read_conf
正解：B、C
解説：
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.
質問 # 22
Which sentence about the property decorator is false?
- A. The @property decorator designates a method which is responsible for returning an attribute value
- B. The property decorator marks the method whose name will be used as the name of the instance attribute
- C. The property decorator should be defined before the methods that are responsible for setting and deleting an encapsulated attribute
- D. The property decorator should be defined after the method that is responsible for setting an encapsulated attribute.
正解：D
解説：
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.
質問 # 23
What is true about the unbind_all () method?
(Select two answers.)
- A. It is parameterless
- B. It can be invoked from any widget
- C. It can be invoked from the main window widget only
- D. It causes all the widgets to disappear
正解：A、B
解説：
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
質問 # 24
If w is a correctly created main application window, which method would you use to foe both of the main window's dimensions?
- A. w. f ixshape ()
- B. w. f ixdim ()
- C. w.makewindow ()
- D. w. resizable ()
正解：D
解説：
Explanation
w.resizable()
The resizable() method takes two Boolean arguments, width and height, that specify whether the main window can be resized in the corresponding directions. Passing False to both arguments makes the main window non-resizable, whereas passing True to both arguments (or omitting them) makes the window resizable.
Here is an example that sets the dimensions of the main window to 500x400 pixels and makes it non-resizable:
importtkinter as tk
root = tk.Tk()
root.geometry("500x400")
root.resizable(False, False)
root.mainloop()
References:
* Tkinter documentation: https://docs.python.org/3/library/tk.html
* Tkinter tutorial: https://www.python-course.eu/python_tkinter.php
The resizable () method of a tkinter window object allows you to specify whether the window can be resized by the user in the horizontal and vertical directions. You can pass two boolean arguments to this method, such as w.resizable (False, False), to prevent both dimensions from being changed. Alternatively, you can pass 0 or
1 as arguments, such as w.resizable (0, 0), to achieve the same effect1.
References:
1: https://stackoverflow.com/questions/36575890/how-to-set-a-tkinter-window-to-a-constant-size Other methods that can be used to control the window size are:
* w.geometry () : This method allows you to set the initial size and position of the window by passing a string argument in the format "widthxheight+x+y", such as w.geometry ("500x500+100+100")12.
* w.minsize () and w.maxsize (): These methods allow you to set the minimum and maximum size of the window in pixels, such as w.minsize (500, 500) and w.maxsize (1000, 1000)12.
* w.pack_propagate () and w.grid_propagate (): These methods allow you to enable or disable the propagation of the size of the widgets inside the window to the window itself. By default, these methods are set to True, which means that the window will adjust its size according to the widgets it contains.
You can set these methods to False or 0 to prevent this behavior, such as w.pack_propagate (0) or w.grid_propagate (0).
* w.place (): This method allows you to place the window at a specific position and size relative to its parent window or screen. You can use keyword arguments such as x, y, width, height, relx, rely, relwidth, and relheight to specify the coordinates and dimensions of the window in absolute or relative terms, such as w.place (x=0, y=0, relwidth=1, relheight=1).
References:
2: https://stackoverflow.com/questions/25690423/set-window-dimensions-in-tkinter-python-3 :
https://stackoverflow.com/questions/36575890/how-to-set-a-tkinter-window-to-a-constant-size/36576068#36576
https://www.skotechlearn.com/2020/06/tkinter-window-position-size-center-screen-in-python.html
質問 # 25
If purple can be obtained from mixing red and blue, which color codes represent the two ingredients? Select two answers)
- A. #0000FF
- B. #FF0000
- C. #000000
- D. #FFFFFF
正解：A、B
質問 # 26
Analyze the following snippet and select the statement that best describes it.
- A. The code is an example of implicitly chained exceptions.
- B. The code is an example of explicitly chained exceptions.
- C. The code is fine and the script execution is not interrupted by any exception.
- D. The code is erroneous as the OwnMath class does not inherit from any Exception type class
正解：B
解説：
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.
質問 # 27
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 returns a Python entity.
- D. It takes Python data as its argument.
正解：A、D
解説：
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.
質問 # 28
Which of the following will set the button text's font to 12 point italics Anal? (Select two answers)
- A.
- B.
- C.
- D.
正解：C、D
解説：
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.
質問 # 29
Analyze the following snippet and choose the best statement that describes it.
- A. Excalibur is the value passed to an instance variable
- B. Weapon is the value passed to an instance variable
- C. varl is the name of a global variable
- D. self. name is the name of a class variable.
正解：A
解説：
Explanation
The correct answer is C. Excalibur is the value passed to an instance variable. In the given code snippet, self.name is an instance variable of the Sword class. When an instance of the Sword class is created with varl = Sword('Excalibur'), the value 'Excalibur' is passed as an argument to the __init__ method and assigned to the name instance variable of the varl object.
The code defines a class called Sword with an __init__ method that takes one parameter name. When a new instance of the Sword class is created with varl = Sword('Excalibur'), the value of the 'Excalibur' string is passed as an argument to the __init__ method, and assigned to the self.name instance variable of the varl object.
質問 # 30
What isa___traceback___?
(Select two answers )
- A. An attribute owned by every exception object
- B. An attribute that holds interesting information that is particularly useful when the programmer wants to store exception details in other objects
- C. A special method delivered by the traceback module to retrieve a full list of strings describing thetraceback
- D. An attribute that is added to every object when the traceback module is imported
正解：A、B
解説：
Explanation
The correct answers are A. An attribute owned by every exception object and D. An attribute that holds interesting information that is particularly useful when the programmer wants to store exception details in other objects. A traceback is an attribute of an exception object that contains a stack trace representing the call stack at the point where the exception was raised. The traceback attribute holds information about the sequence of function calls that led to the exception, which can be useful for debugging and error reporting.
質問 # 31
Analyze the following snippet and decide whether the code is correct and/or which method should be distinguished as a class method.
- A. The code is erroneous.
- B. The gexNumberOfcrosswords () and issrived methods should be decorated with @classzoechod.
- C. The getNumberofCrosswords () method should be decorated With @classmethod.
- D. There is only one initializer, so there is no need for a class method.
正解：C
解説：
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.
質問 # 32
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 system function returns a system-related error.
- D. It is raised when a timeout occurs on a socket.
正解：A
解説：
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.
質問 # 33
In the JSON processing context, the term serialization:
- A. names a process in which a JSON string is turned into Python data.
- B. refers to nothing, because there is no such thing as JSON serialization.
- C. names a process in which a JSON string is remodeled and transformed into a new JSON string
- D. names a process in which Python data is turned into a JSON string.
正解：D
解説：
Explanation
In the JSON processing context, the term serialization: A. names a process in which Python data is turned into a JSON string.
Serialization refers to the process of converting a data object, such as a Python object, into a format that can be easily transferred over a network or stored in a file. In the case of JSON, serialization refers to converting Python data into a string representation using the JSON format. This string can be sent over a network or stored as a file, and later deserialized back into the original Python data object.
質問 # 34
Which of the following values can be returnedby the messagebox. askquestion () method?
- A. True and False
- B. "accept:" and "cancel''
- C. l and o
- D. "yes" and "no"
正解：D
解説：
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.
質問 # 35
Analyze the following snippet and select the statement that best describes it.
- A. The *arg parameter holds a list of unnamed parameters
- B. The code is syntactically correct despite the fact that the names of the function parameters do not follow the naming convention
- C. The code is missing a placeholder for unnamed parameters.
- D. The code is syntactically incorrect - the function should be defined as def f1 (*args, **kwargs)
正解：A
解説：
Explanation
The provided code snippet defines a function f1 that accepts variable-length arguments using the *args and **kwargs syntax. The *args parameter allows for an arbitrary number of unnamed arguments to be passed to the function as a tuple, while the **kwargs parameter allows for an arbitrary number of named arguments to be passed to the function as a dictionary.
Therefore, the correct statement that best describes the code is:
The *args parameter holds a list of unnamed parameters, while the **kwargs parameter holds a dictionary of named parameters.
質問 # 36
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