# 商家类

class Merchant:

    def __init__(self, name):

        self.name = name

        self.offers = []  # 存储商家的促销优惠信息

    def add_offer(self, offer):

        self.offers.append(offer)

    def get_offers(self):

        return self.offers

# 商家联盟类

class MerchantAlliance:

    def __init__(self):

        self.members = []  # 存储商家联盟的成员商家

    def add_member(self, merchant):

        self.members.append(merchant)

    def promote_offers(self):

        for member in self.members:

            offers = member.get_offers()

            for offer in offers:

                print(member.name + " offers: " + offer)

# 创建商家对象

merchant1 = Merchant("Merchant 1")

merchant2 = Merchant("Merchant 2")

merchant3 = Merchant("Merchant 3")

# 添加商家的促销优惠

merchant1.add_offer("Offer 1")

merchant2.add_offer("Offer 2")

merchant3.add_offer("Offer 3")

# 创建商家联盟对象

alliance = MerchantAlliance()

# 添加商家到商家联盟

alliance.add_member(merchant1)

alliance.add_member(merchant2)

alliance.add_member(merchant3)

# 促销推广

alliance.promote_offers()