List comprehensions are one of Python’s most powerful features, but they can quickly become a readability nightmare. A single-line transformation is elegant, but if you find yourself nesting multiple loops or complex conditionals inside those brackets, it's time to step back.
If the logic takes more than a few seconds for a human to parse, refactor it into a standard for-loop. Your teammates (and your future self) will thank you for prioritizing clarity over cleverness. Remember, code is read much more often than it is written.
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