30 questions for “Descriptors & Properties”

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Python Descriptors & Properties 15

Information Technology

30 questions in 2 technologies

#	Question	Technology	Topic	Level
1	How do properties and descriptors interact with __slots__, and what special consideration is needed? Python › Descriptors & Properties	Python	Descriptors & Properties	Advanced
2	What does the @property decorator do, and how does it let a method be accessed like an attribute? Python › Descriptors & Properties	Python	Descriptors & Properties	Beginner
3	How do you add a setter to a property so assignment (obj.attr = value) triggers custom logic, like validation? Python › Descriptors & Properties	Python	Descriptors & Properties	Beginner
4	How would you convert an existing plain attribute into a property later, without breaking any existing code that reads or writes it directly? Python › Descriptors & Properties	Python	Descriptors & Properties	Beginner
5	What is a descriptor, and which dunder methods define the descriptor protocol? Python › Descriptors & Properties	Python	Descriptors & Properties	Intermediate
6	What is the difference between a data descriptor and a non-data descriptor, and how does this affect attribute lookup priority? Python › Descriptors & Properties	Python	Descriptors & Properties	Intermediate
7	How does __set_name__ let a descriptor automatically learn the attribute name it's being assigned to on the owning class? Python › Descriptors & Properties	Python	Descriptors & Properties	Intermediate
8	How would you implement a lazy, cached property using a custom descriptor (or functools.cached_property) that only computes its value once? Python › Descriptors & Properties	Python	Descriptors & Properties	Advanced
9	How do you write a descriptor that behaves differently when accessed on the CLASS itself versus on an INSTANCE? Python › Descriptors & Properties	Python	Descriptors & Properties	Advanced
10	How would you implement a type-validating descriptor that enforces a specific type constraint, reusable across multiple attributes and classes? Python › Descriptors & Properties	Python	Descriptors & Properties	Advanced

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