code: def bytes(self):
          r
          text, image = self.image
          bytes = BytesIO()
          image.save(bytes, format=self.format)
          bytes.seek(0)
          return (text, bytes)
docs: r"""
          Tuple with a CAPTCHA text and a BytesIO object.
  
          Property calls self.image and saves image contents in a BytesIO
          instance, returning CAPTCHA text and BytesIO as a tuple.
          See: image.
  
          :returns: ``tuple`` (CAPTCHA text, BytesIO object)