I want to change the core calculation of voucher
offers/benefits.py
class PercentageDiscountBenefit(Benefit):
....
....
def apply(self, basket, condition, offer, discount_percent=None,
max_total_discount=None):
if discount_percent is None:
discount_percent = self.value
discount_amount_available = max_total_discount
line_tuples = self.get_applicable_lines(offer, basket)
discount = D('0.00')
affected_items = 0
max_affected_items = self._effective_max_affected_items()
affected_lines = []
for price, line in line_tuples:
if affected_items >= max_affected_items:
break
if discount_amount_available == 0:
break
quantity_affected = min(line.quantity_without_discount,
max_affected_items - affected_items)
*line_discount = self.round(discount_percent / D('100.0') * price *
int(quantity_affected)) * my_var*
if discount_amount_available is not None:
line_discount = min(line_discount, discount_amount_available)
discount_amount_available -= line_discount
apply_discount(line, line_discount, quantity_affected)
affected_lines.append((line, line_discount, quantity_affected))
affected_items += quantity_affected
discount += line_discount
if discount > 0:
condition.consume_items(offer, basket, affected_lines)
return results.BasketDiscount(discount)
*i want to change line_discount*
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