class WlScore(Base):
    __tablename__ = 'wl_score'

    score_id = Column(Integer
                    ,primary_key=True
                    ,autoincrement=True
                    ,comment='序号'
                    )

    stu_id = Column( Integer
                    ,ForeignKey('wl_student.stu_id')
                    ,comment='学生编号')

    class_id = Colimn( Integer
                    ,ForeignKey('wl_class.class_id')
                    ,comment='学生编号')

    exam_order = Column(Integer
                        , nullable=False
                        , comment="考核序次")

    score=Column(Numeric(5, 2)
                 , comment="成绩")

    create_time = Column(DATETIME
                         , nullable=False
                         , default=datetime.now
                         , comment="作成时间")

    update_time = Column(DATETIME
                         , nullable=False
                         , default=datetime.now
                         , onupdate=datetime.now
                         , comment="更新时间")

    delete_status = Column(
        Integer,default=0,comment='删除状态：0未删除，1已删除')

    delete_time = Column(DATETIME,comment='删除时间')



Base.metadata.create_all(engine)