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Trust, but Verify
About this app
Five short functions as an assistant delivers them, each plausible and each with a typical error: edge case, invented library function, eval on form input, swapped date format, wrong domain logic. Tap the suspicious line, then check with five methods: read the code, check the docs, example, edge case, recompute. The log shows real Python 3.13 output; the matrix collects which method reveals which error: reading versus trying out.
Subject: Software engineering
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