message: fixed bug : '/' missing
diff: @@ -20,7 +20,7 @@ for file in files_xlsx:
  for sheetname in sheetnames:
  sheet = wb[sheetname]
  - csvfilename = "input_files" + file[:-5] + "-" + sheetname + ".csv"
  + csvfilename = "input_files/" + file[:-5] + "-" + sheetname + ".csv"
  col = csv.writer(open(csvfilename, 'w', newline=""))
  for r in sheet.rows:
  # row by row write
  