code: def temp_saved(self, suffix='', prefix='tmp', dir=None):
          
          tmp = tempfile.NamedTemporaryFile(
              suffix=suffix,
              prefix=prefix,
              dir=dir,
              delete=False,
          )
  
          try:
              self.save_to(tmp)
              tmp.flush()
              tmp.seek(0)
              yield tmp
          finally:
              try:
                  os.unlink(tmp.name)
              except OSError as e:
                  if e.errno != 2:
                      reraise(e)
docs: Saves data to temporary file and returns the relevant instance of
          :func:`~tempfile.NamedTemporaryFile`. The resulting file is not
          deleted upon closing, but when the context manager exits.
  
          Other arguments are passed on to :func:`~tempfile.NamedTemporaryFile`.