如何在Flask SQLAlchemy中存储模型中的列表

from sqlalchemy.orm import relationship, backref

class ModelA(db.Model):
    __tablename__ = 'model_a'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(50))
    model_b_list = relationship('ModelB', backref='model_a', lazy=True)

class ModelB(db.Model):
    __tablename__ = 'model_b'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(50))
    model_a_id = db.Column(db.Integer, db.ForeignKey('model_a.id'))

model_a = ModelA(name='Model A')
model_b = ModelB(name='Model B', model_a=model_a)
db.session.add(model_a)
db.session.commit()

model_a = ModelA.query.get(1)
model_b_list = model_a.model_b_list

model_a = ModelA.query.get(1)
model_b = model_a.model_b_list[0]
db.session.delete(model_b)
db.session.commit()