@property
    def order_id(self):
        """
        Returns ``_order_id`` (if it has been set) or a generic ID for this
        order.
        """
        if self._order_id:
            return self._order_id
        return u'No. %d' % self.id
dataset/ETHPy150Open matthiask/plata/plata/shop/models.py/Order.order_id/original