from aspose.cells import TxtSaveOptions, Workbook

#  For complete examples and data files, please go to https:# github.com/aspose-cells/Aspose.Cells-for-.NET
#  Load your source workbook
workbook = Workbook("book1.xls")
#  Text save options. You can use any type of separator
opts = TxtSaveOptions()
opts.separator = '\t'
workbook.save("out.txt", opts)