创建具有默认值的复合类型

class CloudService:
    def __init__(self, name="MyService", region="us-west-1", instance_type="t2.micro"):
        self.name = name
        self.region = region
        self.instance_type = instance_type

    def start(self):
        # 启动云服务的逻辑

    def stop(self):
        # 停止云服务的逻辑

# 创建一个具有默认值的云服务实例
my_service = CloudService()
print(my_service.name)  # 输出: MyService
print(my_service.region)  # 输出: us-west-1
print(my_service.instance_type)  # 输出: t2.micro

# 创建一个自定义的云服务实例
custom_service = CloudService(name="CustomService", region="eu-central-1", instance_type="m5.large")
print(custom_service.name)  # 输出: CustomService
print(custom_service.region)  # 输出: eu-central-1
print(custom_service.instance_type)  # 输出: m5.large