python类get_all_volumes()的实例源码

def _attachment_state(self):
        ec2 = self.get_ec2_connection()
        rs = ec2.get_all_volumes([self.volume_id])
        return rs[0].attachment_state()

def _size(self):
        if not hasattr(self, '__size'):
            ec2 = self.get_ec2_connection()
            rs = ec2.get_all_volumes([self.volume_id])
            self.__size = rs[0].size
        return self.__size