企业支付服务年末优惠活动

class Promotion:
    def __init__(self, name, discount_rate, start_date, end_date):
        self.name = name
        self.discount_rate = discount_rate
        self.start_date = start_date
        self.end_date = end_date

    def is_active(self, current_date):
        return self.start_date <= current_date <= self.end_date

    def apply_discount(self, amount):
        if self.is_active(datetime.now()):
            return amount * (1 - self.discount_rate)
        return amount

# 使用示例
from datetime import datetime

promotion = Promotion("年末大促", 0.1, datetime(2023, 12, 1), datetime(2023, 12, 31))
total_amount = 1000
discounted_amount = promotion.apply_discount(total_amount)
print(f"原金额: {total_amount}, 折扣后金额: {discounted_amount}")