sqlalchemy 使用
fromsqlalchemy.ext.declarativeimportdeclarative_basefromsqlalchemyimportColumn,Integer,StringfromsqlalchemyimportSequencefromsqlalchemy.ormimportsessionmakerBase=declarative_base()fromsqlalchemyimportcreate_engineengine=create_engine('sqlite:///:memory:',echo=True)classUser(Base):__tablename
