Question
When should a Python developer choose Properties and Validation deliberately?
- Use properties when the object needs one visible place to protect an invariant or compute a cheap derived value.
- Choose Properties and Validation mainly when you want to postpone validation and fix issues manually later.
- Choose Properties and Validation whenever you want the code to look more advanced, even if the design gets less clear.
- Choose Properties and Validation only to avoid modeling the real data shape or domain contract explicitly.
Hint
Think about the production scenario where the choice genuinely improves the code.
Answer and rationale
Correct answer: A. Use properties when the object needs one visible place to protect an invariant or compute a cheap derived value.
Use properties when the object needs one visible place to protect an invariant or compute a cheap derived value. Interviewers often ask this to see whether you can connect the concept to real design decisions.
Track: Python