TypeError: __init__() got an unexpected keyword argument 'ordered'

So I’m using the following: marshmallow (3.0.0) marshmallow-sqlalchemy (0.17.0) psycopg2 (2.8.3) SQLAlchemy (1.3.7)

I’ve got the following: _Tables.py

person_table = Table(
    'person',
    Base.metadata,
    Column('id', UUID(as_uuid=True), primary_key=True, nullable=False, default=sqlalchemy.text('uuid_generate_v4()'), server_default=sqlalchemy.text('uuid_generate_v4()')),
    Column('display_name', String(length=255), nullable=False),
    Column('email', String(length=255), unique=True, nullable=False),
    Column('first_name', String(length=255), nullable=False),
    Column('image', Text),
    Column('last_name', String(length=255), nullable=False),
    Column('phash', Text))

SAObjects.py

class Person(Base):
    def __repr__(self):
        return (
            "<Person id='" + str(self.id)
            + "' first_name='" + self.first_name
            + "' last_name='" + self.last_name + "'>")
    __table__ = person_table

_Schema.py

class BaseOpts(ModelSchemaOpts):
    def __init__(self, meta):
        if not hasattr(meta, "sqla_session"):
            meta.sqla_session = SqlSessionSingleton.get_instance()
        super(BaseOpts, self).__init__(meta)

class BaseSchema(ModelSchema):
    OPTIONS_CLASS = BaseOpts

class PersonSchema(BaseSchema):
    class Meta:
        model = Person

but I am getting the following:

$ python3 db_tester.py
Traceback (most recent call last):
  File "db_tester.py", line 4, in <module>
    from ._Schema import PersonSchema
  File "#####-venv/myproject/tests/myproject/_Schema.py", line 21, in <module>
    class BaseSchema(ModelSchema):
  File "#####-venv/lib/python3.7/site-packages/marshmallow/schema.py", line 112, in __new__
    klass.opts = klass.OPTIONS_CLASS(meta, ordered=ordered)
TypeError: __init__() got an unexpected keyword argument 'ordered'

Did I screw something up?

[sloria]

Your BaseOpts constructor needs to accept ordered or *args, **kwargs.

class BaseOpts(ModelSchemaOpts):
    def __init__(self, meta, ordered=False):
        if not hasattr(meta, "sqla_session"):
            meta.sqla_session = SqlSessionSingleton.get_instance()
        super(BaseOpts, self).__init__(meta, ordered=ordered)

[frankcash]

how would one do this without creating a shared base model