Making a login page

[card51shor]

@app.route("/login")
def login():
    password = request.form.get("password")
    username = request.form.get("username")
    db.execute('SELECT * FROM users WHERE username = :username AND password = :password', {"username":username, "password":password})
    account = db.fetchone()
    if account:
        return render_template("login.html")
    else:
        print("No!")

I changed it to this and now i'm getting an error that says:

AttributeError: 'scoped_session' object has no attribute 'fetchone'