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Pythonic Data Processing · interview question

What does a strong engineer do when reasoning through dict comprehensions code?

Multiple choiceMediumchapter-8-curatedpremiumpythonic-data-processingdict-comprehensions
python
subtotal_by_sku = {row["sku"]: row["subtotal"] for row in rows}
Choose one answer
Answer and explanation

Correct answer

C. Narrate the data shape, the state changes, and the exact rule order step by step.

Why

Interviewers often use simple code to test whether you can reason through execution without bluffing.

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