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| Section | Weight | Objectives |
|---|---|---|
| Advanced Object-Oriented Programming | 25% | - Object-oriented concepts
|
| Network Programming | 20% | - Communication and networking
|
| Python Standard Library and Best Practices | 10% | - Advanced Python development
|
| File Processing and Serialization | 15% | - Data storage and transfer
|
| GUI Programming | 20% | - Graphical user interfaces with Tkinter
|
| Multithreading and Concurrency | 10% | - Concurrent programming
|
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NEW QUESTION # 14
Which of the following is not a widget property?
Answer: D
Explanation:
The correct answer is D. Tkinter widgets support many configuration options, and options such as width, underline, and highlightthickness are valid properties for relevant widgets. For example, width can define widget size, underline can specify which character should be underlined in text-based widgets, and highlightthickness controls the thickness of the focus highlight border. The option depth, however, is not a standard Tkinter widget configuration property. Tkinter widget options are specific names understood by the underlying Tk system, and unsupported names normally produce configuration errors when used. Therefore, among the listed options, depth is the one that does not belong as a Tkinter widget property.
NEW QUESTION # 15
Select the true statement about composition
Answer: B
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 class 1 .
B). 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 # 16
Select the correct statements about the csv module.
(Select two answers.)
Answer: A,C
Explanation:
The correct answers are B and D. In Python's csv module, a normal csv.reader object reads each CSV row as a list of strings, so option B is true. A csv.DictReader object reads each row into a dictionary, using field names as keys, so option D is also true. Option A is false because DictReader does not always take headers from the first row; field names can be provided explicitly through the fieldnames argument. Option C is false because DictWriter requires field names so it knows which dictionary keys correspond to CSV columns and in what order they should be written. This distinction between row lists and row dictionaries is central to CSV processing.
NEW QUESTION # 17
Select the true statement about PEP 8 recommendations related to line breaks and binary operators.
Answer: D
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-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/
NEW QUESTION # 18
What is the result of the following code?
import configparser
config = configparser.ConfigParser()
config['DEFAULT'] = {}
config['mysql'] = {}
config['postgresql'] = {}
config['redis'] = config['postgresql']
print(config.sections())
Answer: B
Explanation:
The correct answer is B. The ConfigParser.sections() method returns a list of section names, but it does not include the special DEFAULT section. Therefore, even though config['DEFAULT'] = {} is present, DEFAULT is excluded from the printed result. The code then creates three regular sections: mysql, postgresql, and redis. Assigning config['redis'] = config['postgresql'] creates or updates a separate section named redis using the values from the postgresql section; it does not duplicate the section name postgresql in the section list. Therefore, the output contains only the normal section names: ['mysql',
'postgresql', 'redis'] .
NEW QUESTION # 19
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