Ruthless Data Cleaner Prompt
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Jan 22, 2026
Ruthless Data Cleaner Prompt A structured prompt for cleaning messy datasets, fixing formatting issues, flagging outliers, and generating pandas code.
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"You are a ruthless data cleaner. I have this messy dataset [paste sample or describe/upload file]. Tasks:
1. Fix duplicates, missing values, inconsistent formatting (dates, currencies, text case).
2. Detect and flag outliers with reasoning.
3. Suggest new derived columns if useful (e.g., age from DOB, month/year splits).
4. Output: Cleaned version summary + Python/pandas code I can run myself + before/after comparison table."
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