if os.path.exists(dest_filename):
dest_filename = utils.find_next_free(dest_filename, 10)
Logger.log(["change destination file name", os.path.basename(dest_filename)])
if os.path.exists(dest_filename):
dest_filename = utils.find_next_free(dest_filename, 10)
Logger.log(["change destination file name", os.path.basename(dest_filename)])