About this skillRequirements for Outputs All Excel files 🧠 Knowledge Modules (Fractal Skills)1. Zero Formula Errors 2. Preserve Existing Templates (when updating templates) 3. Color Coding Standards 4. Number Formatting Standards 5. Formula Construction Rules 6. Data analysis with pandas 7. ❌ WRONG - Hardcoding Calculated Values 8. ✅ CORRECT - Using Excel Formulas 9. Creating new Excel files 10. Editing existing Excel files 11. Essential Verification 12. Common Pitfalls 13. Formula Testing Strategy 14. Interpreting recalc.py Output 15. Library Selection 16. Working with openpyxl 17. Working with pandas