models.py 文件源码

def getPriceGross(self):
        with localcontext() as ctx:
            ctx.rounding = ROUND_HALF_EVEN

            vatPercent = Decimal(settings.INVOICE_VAT) * Decimal("0.01")
            grossPrice = self.price + (self.price * vatPercent)
            return grossPrice.quantize(Decimal("0.01"))