One to one self relationship in SQLAlchemy

Question

I need to create an SQLAlchemy version of a linked list. It\'s actually more complex than that, but it boils down to this:

I need a one-to-one, self-referential,

Answer 1

As exception says you need to set remote_side keyword for relationship. Otherwise sqlalchemy cannot select reference direction.

class Node(declarative_base()):
    ...
    prev = relationship(
        'Node',
        uselist=False,
        remote_side=[id],
        backref=backref('next', uselist=False)
    )