【DM版本】:dm8
【操作系统】：centos7
【问题描述】*：
简单的查询语句报错（代码和报错我都贴在下面）
最奇葩的是，我把表的字段status，先改成其他字段，再改回来，代码就不报错了。
有哪位大神能解释下吗，或者告诉我怎么绕过这个坑

#!/usr/bin/env python
# coding: utf-8
import datetime
from sqlalchemy import create_engine
from sqlalchemy import Column, Date, Integer, String, ForeignKey
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Column, Integer, String, Boolean, Text, DateTime, BIGINT, Float, DATETIME
from sqlalchemy.orm import sessionmaker

# 连接数据库
engine = create_engine('dm+dmPython://NCAF:Dameng123@172.16.5.242:5236', echo=True)

MysqlBase = declarative_base()

Session = sessionmaker(bind=engine)
session = Session()

class DPISetting(MysqlBase):
    __tablename__ = 'dpi_setting'


    dev_id = Column(String(36), primary_key=True)
    dev_name = Column(String(255))
    status = Column(String(36))

if __name__ == '__main__':
    dpi_setting = session.query(DPISetting).filter_by(dev_id='fc178003-3b4a-11ee-955c-fad437251200').first()
    print(dpi_setting)