cxn03651/write_xlsx — pull request #1 by jdh2550 (2012-11-09 18:48:06+00:00)
Title: Fix for empty strings

If you have a workbook with empty strings in a cell then SharedStrings.write_si chokes. I added a simple fix in write_sst_strings such that if the string is empty then pass a single space to write_si.