Iterators and Generators · interview question

If you wrote a test around yield and custom generators, what should the test prove first?

Multiple choiceMediumchapter-8-curatedpremiumiterators-and-generatorsyield-and-custom-generators

python

def batched(rows: list[dict], size: int):
    for index in range(0, len(rows), size):
        yield rows[index:index + size]

Solve the symptom with comments only and avoid changing the code shape around yield and custom generators.Keep yield and custom generators implicit so the script stays short and hope the next engineer infers the rule.That the rule behaves correctly at the boundary cases the lesson is trying to make explicit.Delay clarity until production traffic reveals the edge case and then patch it under pressure.

Answer and explanation

Correct answer

C. That the rule behaves correctly at the boundary cases the lesson is trying to make explicit.

Why

Good tests make the design safer to change because they lock in the meaningful behavior rather than surface-level implementation details.

Test yourself on Iterators and Generators

A free test with instant, explained results. No account needed.

Start free test

All Iterators and Generators questions →

If you wrote a test around yield and custom generators, what should the test prove first?

Correct answer

Why

More Iterators and Generators questions