xlsx

Reads, writes, and edits Excel and tabular files (.xlsx, .xlsm, .csv, .tsv). Uses pandas for data analysis and openpyxl for formula and formatting work. Includes LibreOffice-based recalculation to verify formulas are error-free before delivery. Writing openpyxl scripts yourself rarely catches formula errors before you open the file — this runs LibreOffice recalculation automatically and returns the exact cell locations of any errors to fix.