Method total

10-dp-1class-func/strategy.py:56–58

(self)

    promotion: Optional[Callable[['Order'], Decimal]] = None  # <1>

    def total(self) -> Decimal:
        totals = (item.total() for item in self.cart)
        return sum(totals, start=Decimal(0))

    def due(self) -> Decimal:
        if self.promotion is None: