unicode filepath fail when calling sandboxed Excel files

[fzumstein]

see: http://stackoverflow.com/questions/28605263/excel-cant-establish-with-xlwings-connection-when-running-from-standalone-pytho

[fzumstein]

Excel 2011 on Mac seems to be unable to handle unicode file paths, it returns e.g. é as e_ in ThisWorkbook.FullName

==> Use ThisWorkbook.Path and ThisWorkbook.Name instead... Although this doesn't help in case the unicode character happens in the folders and not in the name...