def text()

in content_api.py [0:0]


  def text(self) -> str:
    """Returns part text as string.

    Returns:
      The text of the part.

    Raises:
      ValueError if part has no text.
    """
    if not mime_types.is_text(self.mimetype) and not mime_types.is_json(
        self.mimetype
    ):
      raise ValueError('Part is not text.')
    return self.part.text or ''