Converting a folder of Excel files into CSV files/Merge Excel Workbooks
Look at openoffice's python library. Although, I suspect openoffice would support MS document files. 
Python has no native support for Excel file.
I have a folder with a large number of Excel workbooks.  Is there a way to convert every file in this folder into a CSV file using Python's xlrd, xlutiles, and xlsxWriter?
I would like the newly converted CSV files to have the extension '_convert.csv'.
OTHERWISE...
Is there a way to merge all the Excel workbooks in the folder to create one large file?
I've been searching for ways to do both, but nothing has worked...