'If a commentary card\'s value is too long to fit on a single card, this
will render the card as multiple consecutive commentary card of the
same type.'

def _format_long_commentary_image(self):

    maxlen = (Card.length - KEYWORD_LENGTH)
    value = self._format_value()
    output = []
    idx = 0
    while (idx < len(value)):
        output.append(str(Card(self.keyword, value[idx:(idx + maxlen)])))
        idx += maxlen
    return ''.join(output)
