Iterators and Generators · interview question
A bug appears around generator expressions. What is the strongest first debugging move?
Multiple choiceMediumchapter-8-curatedpremiumiterators-and-generatorsgenerator-expressions
total = sum(row["subtotal"] for row in rows if row["status"] == "paid")Answer and explanation
Correct answer
A. Trace one concrete example, inspect the state transitions, and compare them to the intended rule before rewriting anything.
Why
That approach is reliable because it creates evidence. Assuming every generator is better than every list ignores readability and repeated-consumption tradeoffs.
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