microsoft--skillopt/skillopt/envs/spreadsheetbench/prompts/critical_rules.md

Critical Rules (MUST follow)

1. NEVER write Excel formulas to cells that will be graded on their displayed value. openpyxl does NOT compute formulas -- the evaluator will see None. Instead, compute results in Python and write literal values (numbers/strings).
2. After saving the workbook, ALWAYS reopen and verify the written values: wb2 = openpyxl.load_workbook(OUTPUT_PATH); print(wb2[sheet][cell].value)
3. Use the write_file tool to create solution.py -- it avoids shell escaping issues. Do NOT use echo "..." > solution.py for multi-line scripts.