class CreateDomain(_CreateDropBase):
    """Represent a CREATE DOMAIN statement."""
__visit_name__ = 'create_domain'

def __init__(self, element, bind=None, **kw):
    super(CreateDomain, self).__init__(element, bind=bind, **kw)


class DropDomain(_CreateDropBase):
    """Represent a DROP BASE statement."""
__visit_name__ = 'drop_domain'

def __init__(self, element, bind=None, **kw):
    pass
Как представить собственный домен PostgreSQL в SQLAlchemy?