山药YAml元绑定微框架为YAML文档定义架构，如SQLAlchemy，以像Python对象一样读取、写入和操作数据。基本示例:


from yamb import Literal , Nested , Collection , YAMBObject



class Address ( YAMBObject ):

    city = Literal ( default = 'New York' )

    street = Literal ()



class Person ( YAMBObject ):

    name = Literal ()

    phone = Literal ()

    address = Nested ( Address )



    def lives_close_to ( self , another_person ):

        pass