A developer is implementing a 'Temperature' class that stores a temperature in Celsius. They want to ensure that when the temperature is set, it is validated to be between -273.15 and 1000. Which approach correctly implements this validation?

Use a class attribute and validate in a static method.

Use a name-mangled attribute and rely on the developer to validate before assignment.

Use a regular attribute and validate in the constructor only.

Use a property with a setter that raises ValueError if the value is out of range.

What does the @property decorator do in a class?

It allows a method to be accessed like an attribute.

A developer is working with a class that opens a file handle in __init__. They want to ensure the file is closed when the object is no longer needed. Which approach is the most reliable?

Close the file in the __init__ method after opening it.

Implement __del__ to close the file handle.

Use a context manager (with statement) to manage the file handle.

Rely on the garbage collector to close the file automatically.

GIAC Python Coder

Domain 1Objective 4

Functions, Classes and Objects GPYC Practice Questions (Page 5)

Part of the Python Fundamentals domain, which makes up ~43% of our current practice bank. GIAC (SANS) does not publish an official question count, but from its 120-minute exam (~50–80 total, ~22–34 in this domain), expect 4–7 from this objective — we provide 45 practice questions to prepare you well beyond it. (estimate)

45questions here

9free pages

14concepts

Questions 21–25

21application · medium
A developer is implementing a 'Temperature' class that stores a temperature in Celsius. They want to ensure that when the temperature is set, it is validated to be between -273.15 and 1000. Which approach correctly implements this validation?
Select an answer first
22expert · medium
A team is implementing a custom collection class. They want to support the 'in' operator to check if an item exists in the collection. Which special method should they implement?
Select an answer first
23foundation · easy
What does the @property decorator do in a class?
Select an answer first
24application · medium
A developer is working with a class that opens a file handle in __init__. They want to ensure the file is closed when the object is no longer needed. Which approach is the most reliable?
Select an answer first
25application · easy
A developer is debugging a script that uses a nested function. The inner function needs to modify a variable from the outer function. Which keyword should they use?
Select an answer first

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Functions, Classes and Objects GPYC Practice Questions (Page 5)

Questions 21–25

A developer is implementing a 'Temperature' class that stores a temperature in Celsius. They want to ensure that when the temperature is set, it is validated to be between -273.15 and 1000. Which approach correctly implements this validation?

A team is implementing a custom collection class. They want to support the 'in' operator to check if an item exists in the collection. Which special method should they implement?

What does the @property decorator do in a class?

A developer is working with a class that opens a file handle in __init__. They want to ensure the file is closed when the object is no longer needed. Which approach is the most reliable?

A developer is debugging a script that uses a nested function. The inner function needs to modify a variable from the outer function. Which keyword should they use?

Keep studying — Python Fundamentals

A developer is working with a class that opens a file handle in init. They want to ensure the file is closed when the object is no longer needed. Which approach is the most reliable?