聚合计费平台试用

class BillingPlatform:
    def __init__(self, user_id, plan):
        self.user_id = user_id
        self.plan = plan
        self.usage = {}

    def add_usage(self, service, amount):
        if service in self.usage:
            self.usage[service] += amount
        else:
            self.usage[service] = amount

    def generate_bill(self):
        bill = {}
        for service, amount in self.usage.items():
            if self.plan == 'basic':
                bill[service] = amount * 0.5  # 假设基础套餐单价为0.5元
            elif self.plan == 'premium':
                bill[service] = amount * 1.0  # 高级套餐单价为1元
        return bill

# 示例使用
billing_system = BillingPlatform(user_id=123, plan='basic')
billing_system.add_usage('storage', 100)
billing_system.add_usage('bandwidth', 50)
print(billing_system.generate_bill())