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| Section | Weight | Objectives |
|---|---|---|
| GUI Programming | 20% | - Graphical user interfaces with Tkinter
|
| File Processing and Serialization | 15% | - Data storage and transfer
|
| Python Standard Library and Best Practices | 10% | - Advanced Python development
|
| Multithreading and Concurrency | 10% | - Concurrent programming
|
| Network Programming | 20% | - Communication and networking
|
| Advanced Object-Oriented Programming | 25% | - Object-oriented concepts
|
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NEW QUESTION # 27
Analyze the following snippet and choose the best statement that describes it.
Answer: A
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.
Reference:
Official Python documentation on Classes: https://docs.python.org/3/tutorial/classes.html
NEW QUESTION # 28
Select the true statement related to PEP 257.
Answer: A
Explanation:
The true statement related to PEP 257 is Option B . According to PEP 257, string literals occurring elsewhere in Python code may also act as documentation. They are not recognized by the Python bytecode compiler and are not accessible as runtime object attributes (i.e. not assigned to doc ), but two types of extra docstrings may be extracted by software tools: String literals occurring immediately after a simple assignment at the top level of a module, class, or init method are called "attribute docstrings". String literals occurring immediately after another docstring are called "additional docstrings" 1 .
NEW QUESTION # 29
What does the term deserialization mean? Select the best answer.
Answer: D
Explanation:
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:
import json
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.
Reference:
Official Python Documentation on Serialization: https://docs.python.org/3/library/pickle.html#module-pickle Real Python Tutorial on Serialization and Deserialization in Python: https://realpython.com/python- serialization/ Deserialization is the process of converting a sequence of bytes, such as a file or a network message, into a Python object. This is the opposite of serialization, which is the process of converting a Python object into a sequence of bytes for storage or transmission.
NEW QUESTION # 30
Select the true statements about the sqlite3 module. (Select two answers.)
Answer: A,D
Explanation:
C). 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.
D). 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 # 31
Select the true statements related to PEP 8 programming recommendations for exception handling. (Select two answers.)
Answer: A,C
Explanation:
The correct answers are C and D. Custom application exceptions should normally inherit from Exception, not directly from BaseException. BaseException is intended for system-exiting exceptions such as SystemExit, KeyboardInterrupt, and GeneratorExit, so deriving ordinary errors from it can interfere with normal control flow. PEP 8 also discourages broad or bare except: clauses because they catch too much and can hide programming errors or prevent expected interruption behavior. Specific exception handling is clearer, safer, and easier to debug. Option A reverses the intended guidance:
exception hierarchies should help code distinguish what went wrong programmatically. Option B is false because a bare except: can catch system-level exceptions, which is exactly why it should be avoided.
NEW QUESTION # 32
......
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