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

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.

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.

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.

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.

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-in-python
• 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-programming/
• https://towardsdatascience.com/a-step-in-pep8-style-guide-improving-the-readability-of-the-code-8114fd4ccefa
• https://www.codementor.io/@rishikeshdhokare/python-coding-style-best-practices-that-every-python-programmer-must-know-xybbcubb8
• https://www.dataschool.io/python-pep8-tips-and-tricks/

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("", callback_function) # bind left mouse click event to callback_function

button.unbind("") # remove the binding for the left mouse click event