from sqlalchemy import Column, Integer, String, create_engine
from sqlalchemy.ext.declarative import declarative_base

# 创建一个基类
Base = declarative_base()


class Keyword(Base):
    __tablename__ = 'Keyword'

    id = Column(Integer, primary_key=True, autoincrement=True)
    region = Column(String(255), nullable=False)
    word = Column(String(255), nullable=False)