def force_recalculate_total(self, save=True):
        """Calculates sub_total, taxes and total."""
        zero = Decimal("0.0000000000")
        total_discount = Decimal("0.0000000000")

        discount = Discount.objects.by_code(self.discount_code)
        discount.calc(self)

        discounts = discount.item_discounts
        itemprices = []
        fullprices = []

        qty_override = config_value('SHOP','CART_QTY')
        if qty_override:
            itemct = self.numItems

        for lineitem in self.orderitem_set.all():
            lid = lineitem.id
            if lid in discounts:
                lineitem.discount = discounts[lid]
                total_discount += lineitem.discount
                #log.debug('total_discount (calc): %s', total_discount)
            else:
                lineitem.discount = zero
            # now double check against other discounts, such as tiered discounts
            if qty_override:
                qty = itemct
            else:
                qty = lineitem.quantity

            adjustment = get_product_quantity_adjustments(lineitem.product, qty=qty)

            if adjustment and adjustment.price:
                baseprice = adjustment.price.price
                finalprice = adjustment.final_price()
                #We need to add in any OrderItemDetail price adjustments before we do anything else
                baseprice += lineitem.get_detail_price()
                finalprice += lineitem.get_detail_price()
                if baseprice > finalprice or baseprice != lineitem.unit_price:
                    unitdiscount = (lineitem.discount/lineitem.quantity) + baseprice-finalprice
                    unitdiscount = trunc_decimal(unitdiscount, 2)
                    linediscount = unitdiscount * lineitem.quantity
                    total_discount += linediscount
                    #log.debug('total_discount (line): %s', total_discount)
                    fullydiscounted = (baseprice - unitdiscount) * lineitem.quantity
                    lineitem.unit_price = baseprice
                    lineitem.discount = linediscount
                    lineitem.line_item_price = baseprice * lineitem.quantity
                    log.debug('Adjusting lineitem unit price for %s. Full price=%s, discount=%s.  Final price for qty %d is %s',
                        lineitem.product.slug, baseprice, unitdiscount, lineitem.quantity, fullydiscounted)
            if save:
                lineitem.save()

            itemprices.append(lineitem.sub_total)
            fullprices.append(lineitem.line_item_price)

        shipprice = Price()
        shipprice.price = self.shipping_cost
        shipadjust = PriceAdjustmentCalc(shipprice)
        if 'Shipping' in discounts:
            shipadjust += PriceAdjustment('discount', _('Discount'), discounts['Shipping'])

        signals.satchmo_shipping_price_query.send(self, adjustment=shipadjust)
        shipdiscount = shipadjust.total_adjustment()
        self.shipping_discount = shipdiscount
        total_discount += shipdiscount
        #log.debug('total_discount (+ship): %s', total_discount)

        self.discount = total_discount

        if itemprices:
            item_sub_total = reduce(operator.add, itemprices)
        else:
            item_sub_total = zero

        if fullprices:
            full_sub_total = reduce(operator.add, fullprices)
        else:
            full_sub_total = zero

        self.sub_total = full_sub_total

        taxProcessor = get_tax_processor(self)
        totaltax, taxrates = taxProcessor.process()
        self.tax = totaltax

        # clear old taxes
        for taxdetl in self.taxes.all():
            taxdetl.delete()

        for taxdesc, taxamt in taxrates.items():
            taxdetl = OrderTaxDetail(order=self, tax=taxamt, description=taxdesc, method=taxProcessor.method)
            taxdetl.save()

        log.debug("Order #%i, recalc: sub_total=%s, shipping=%s, discount=%s, tax=%s",
            self.id,
            moneyfmt(item_sub_total),
            moneyfmt(self.shipping_sub_total),
            moneyfmt(self.discount),
            moneyfmt(self.tax))

        self.total = Decimal(item_sub_total + self.shipping_sub_total + self.tax)

        if save:
            self.save()
dataset/ETHPy150Open dokterbob/satchmo/satchmo/apps/satchmo_store/shop/models.py/Order.force_recalculate_total/original