runtimeenvironment.py 文件源码

def app_id(self):
        """
        Get the Google App Engine app id
        :return:    The app id
        :rtype:     str
        """

        if not self.is_gae():
            raise RuntimeError('Not running in Google App Engine environment while fetching app_id.')

        if not hasattr(self, '_app_id'):
            from google.appengine.api import app_identity
            self._app_id = app_identity.get_application_id()

        return self._app_id