Class Libraries & REST APIs for the developers to manipulate & process Files from Word, Excel, PowerPoint, Visio, PDF, CAD & several other categories in Web, Desktop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & Android platforms.... cells import Workbook from com . aspose . cells...AddingWorksheetstoNe / ' workbook = Workbook ( dataDir + "Book1.xls"...