如何在Pyramid app启动时获取Registry().设置？

from pyramid.events import ApplicationCreated
from pyramid.registry import Registry

def on_app_created(event):
    registry = event.app.registry
    # 在这里访问Registry().设置
    settings = registry.settings
    # 执行您的逻辑操作

def main(global_config, **settings):
    config = Configurator(settings=settings)
    config.add_subscriber(on_app_created, ApplicationCreated)
    # 配置您的应用程序路由和视图
    app = config.make_wsgi_app()
    return app