code: def insert_text(self, text, position):
          
  
          return super(Editable, self).insert_text(text, -1, position)
docs: insert_text(self, text, position)
  
          :param new_text:
              the text to append
          :type new_text: :obj:`str`
  
          :param position:
              location of the position text will be inserted at
          :type position: :obj:`int`
  
          :returns:
              location of the position text will be inserted at
          :rtype: :obj:`int`
  
          Inserts `new_text` into the contents of the
          widget, at position `position`.
  
          Note that the position is in characters, not in bytes.