Workbook

from aspose.cells_foss import Workbook

Workbook(path=None, password=None)

from aspose.cells_foss import Workbook

# Create a new empty workbook
wb = Workbook()

# Open an existing XLSX file
wb = Workbook("report.xlsx")

# Open an AES-encrypted file
wb = Workbook("protected.xlsx", password="secret")

wb.save(path, password=None)

wb.save("output.xlsx")        # XLSX: default format
wb.save("output.csv")         # CSV: first worksheet only
wb.save("protected.xlsx", password="secret")  # encrypted XLSX

wb.save_as_markdown(path)

wb.save_as_markdown("output.md")

wb.add_worksheet(name=None)

from aspose.cells_foss import Workbook

wb = Workbook()
ws = wb.worksheets[0]
ws.name = "Sales"

ws.cells["A1"].put_value("Quarter")
ws.cells["B1"].put_value("Revenue")
ws.cells["A2"].put_value("Q1")
ws.cells["B2"].put_value(42000)
ws.cells["A3"].put_value("Q2")
ws.cells["B3"].put_value(58000)
ws.cells["B4"].formula = "=SUM(B2:B3)"

wb.save("sales.xlsx")

from aspose.cells_foss import Workbook

wb = Workbook()
wb.worksheets[0].name = "Summary"
ws2 = wb.add_worksheet("Details")
ws3 = wb.add_worksheet("Charts")

print(len(wb.worksheets))   # 3
wb.save("multi-sheet.xlsx")

from aspose.cells_foss import Workbook

wb = Workbook("existing.xlsx")
ws = wb.worksheets[0]
ws.cells["C1"].put_value("Updated")
wb.save("existing.xlsx")    # overwrite in place

from aspose.cells_foss import Workbook

wb = Workbook("report.xlsx")
wb.save("report-secure.xlsx", password="MyPassword123")