Python Institute Certified Professional in Python Programming 1 (PCPP1, PCPP-32-101) (PCPP1) (PCPP1) — Questions 151–209

Which THREE of the following represent common issues when using __slots__?

In a Tkinter grid layout, you want a button to span across two columns. Which parameter should you use?

You are building a Tkinter application and need to ensure that a Label widget expands to fill any extra horizontal space when the parent window is resized. Which configuration for the grid() layout manager achieves this?

You are implementing the Observer pattern. Why should you avoid using a strong reference to the observers in the subject's list?

What is the primary difference between @classmethod and @staticmethod?

What is the correct way to specify the title of a Tkinter window?

Which method on a widget instance causes it to be removed from the display, but not destroyed?

Which THREE of the following are valid ways to configure a widget's appearance after it has been created?

When using configparser, how do you handle multiline values?

When using sqlite3.Row, what is the primary benefit over using a standard tuple?

Which magic method enables index access (e.g., obj[i])?

Which comment style is preferred for block comments in Python?

Which TWO of the following are true about magic methods?

You are using 'concurrent.futures.ThreadPoolExecutor' to fetch data from multiple REST APIs. What happens if an exception is raised inside a thread?

Which TWO of the following statements correctly describe the behavior of the Tkinter 'pack' geometry manager?

You want to trigger a function when a user releases a key. Which event string should you use with bind()?

Which THREE of the following are valid ways to pass arguments to a function called by a Tkinter button command?

You are configuring a logging FileHandler. What does the 'mode' parameter control?

You are using the pack() geometry manager and want to place a frame at the bottom of the window, ensuring it stays there even when other widgets are added. Which configuration is correct?

You want to retrieve a list of all section names from a ConfigParser object. How do you do this?

Which TWO of the following statements about the Python 'requests' library are correct?

Which TWO of the following are valid ways to create a singleton in Python?

Which widget is most suitable for displaying multi-line, editable text?

Which TWO of the following are valid conventions for naming in Python according to PEP 8?

You are building a REST client that needs to handle 429 Too Many Requests status codes. Which strategy is most effective when implementing an automatic retry mechanism?

Which THREE practices improve documentation maintenance?

Which attribute of a Button widget controls the text displayed on it?

What happens when you add two objects of a class that implements __add__?

Which TWO of the following are required to successfully write a row to a CSV file?

Which THREE of the following are valid Tkinter variable classes used for tracking widget states?

Which practice is recommended when dealing with 'bare' except clauses in Python?

When using the 'requests' library to perform a GET request, which parameter should be passed to the 'params' argument to include query string parameters in the URL?

You are using configparser.ConfigParser to read a configuration file. You have a file where option names are case-sensitive. How do you ensure the parser respects this casing?

If you define a class with a metaclass that has a custom __call__ method, when is that __call__ method executed?

You are configuring logging using a dictConfig. You want to send logs to a RotatingFileHandler. Which key must you define in the 'handlers' section?

You need a color chooser dialog in your application. Which module contains this functionality?

You need to configure the logging module to capture logs from multiple modules while ensuring that logs from third-party libraries (e.g., 'urllib3') are only captured at the WARNING level. How do you set this?

Which TWO of the following are valid ways to terminate a Tkinter script gracefully?

Which method is used to customize the behavior of the 'in' operator?

Which TWO of the following are secure coding practices in Python?

You are consuming a REST API that returns data in JSON format. After calling response.json(), you notice the data contains nested dictionaries. What is the most Pythonic way to handle a missing key in the response dictionary safely?

What is the primary function of the 'bg' parameter in a widget configuration?

Which THREE of the following are valid logging levels?

To prevent a user from editing text in a widget, which configuration option should you set?

Which magic method should you implement to make your objects support the 'with' statement context manager?

Which function is used to check if an object is an instance of a class?

You want to bind a function 'on_click' to a left mouse button click on a Button widget. Which event sequence string is correct?

In the context of the Factory pattern in Python, what is a typical benefit of using a registry-based approach instead of a large if-else block?

How do you properly handle a non-200 status code when using 'requests' if you want to avoid manual status code checking?

You are processing a CSV file using csv.DictReader. If your input file lacks a header row, how do you provide the field names?

You are debugging a legacy application and need to ensure that resources like file handles are always closed. Which construct is preferred?

Consider a class that uses a metaclass to automatically register subclasses in a dictionary. If you want to prevent the base class itself from being registered, how should the metaclass be implemented?

How do you set a specific font for a widget?

You are using sqlite3 and need to enforce foreign key constraints. How do you enable them?

Why might you use the __init_subclass__ hook instead of a metaclass?

You are building a custom HTTP client and need to handle persistent connections (keep-alive). What is the primary role of the 'Connection' header?

Which TWO of the following are true about the sqlite3.Cursor object?

Which THREE of the following are valid ways to pass data to a REST API using 'requests'?

You have a Tkinter Entry widget and want to retrieve the text currently entered by the user. Which method do you call on the Entry instance?