SQLAlchemy circular one-to-one relationship

Question

I am trying to make a circular one-to-one relationship (not sure what the correct term is) with SQLAlchemy that looks the following:

class Parent(Base):
             


        

Answer 1

From the SQLAlchemy Docs:

class Parent(Base):
    __tablename__ = 'parent'
    id = Column(Integer, primary_key=True)
    child = relationship("Child", uselist=False, back_populates="parent")

class Child(Base):
    __tablename__ = 'child'
    id = Column(Integer, primary_key=True)
    parent_id = Column(Integer, ForeignKey('parent.id'))
    parent = relationship("Parent", back_populates="child")

Then you can Parent.child or Child.parent all day long