problem description

relationship, with flask sqlalehemy cannot be called. An error message appears
TypeError: "InstrumentedAttribute" object is not callable

the environmental background of the problems and what methods you have tried

python 3.7

related codes

/ / Please paste the code text below (do not replace the code with pictures)

• vehicle task table

class CarJob(db.Model):
    """
    :
        :t_carjob_application
        :t_carjob_tasks
        :t_carjob_scores
    """
    __tablename__ = "t_carjob"
    id = db.Column(db.Integer, primary_key=True)
    jobdate = db.Column(db.DateTime, unique=True) -sharp 
    jobtime = db.Column(db.String(5), unique=True) -sharp

    timestamp = db.Column(db.DateTime, index=True, default=datetime.utcnow)
    jobdetail = db.Column(db.String(200)) -sharp
    -sharp 
    passengers = db.relationship("CarJob_Application", backref="jobs",lazy="dynamic")
    -sharp 
    drivers = db.relationship("CarJob_Task", backref="jobs",lazy="dynamic")

    def __repr__(self):
        return "<CarJob {}>".format(self.id)

• employee application form

class CarJob_Application(db.Model):
    """
    
    """
    __tablename__ = "t_carjob_application"
    id = db.Column(db.Integer, primary_key = True)
    userid = db.Column(db.String(20), db.ForeignKey("user.userid"))
    jobid = db.Column(db.Integer, db.ForeignKey("t_carjob.id"))

    def is_applied(self, userid):
        """
        
        """
        return False

• driver schedule

class CarJob_Task(db.Model):
    """
    
    """
    __tablename__ = "t_carjob_task"
    id = db.Column(db.Integer, primary_key = True)
    driverid = db.Column(db.String(20), db.ForeignKey("user.userid")) -sharpiduseruserid
    jobid = db.Column(db.Integer, db.ForeignKey("t_carjob.id"))
    scores = db.Column(db.Integer) -sharp 

• template list.html

{% extends "base.html" %}

{% block app_content %}

    <ul class="list-group">
        {% for driver in drivers %}
        <li class="list-group-item">:{{ driver.id }} :<b>{{ driver.id }}</b> </li>
        {% endfor %}
    </ul>
{% endblock %}

what result do you expect? What is the error message actually seen?

• want to be able to list employee application information and assigned driver information for a certain period of time.