code: def rename_dont_move(self, path, dest):
          
          from snakebite.errors import FileAlreadyExistsException
          try:
              self.get_bite().rename2(path, dest, overwriteDest=False)
          except FileAlreadyExistsException:
              # Unfortunately python2 don't allow exception chaining.
              raise luigi.target.FileAlreadyExists()
docs: Use snakebite.rename_dont_move, if available.
  
          :param path: source path (single input)
          :type path: string
          :param dest: destination path
          :type dest: string
          :return: True if succeeded
          :raises: snakebite.errors.FileAlreadyExistsException