You have 17unapplied migration(s). Your project may not work properly until you apply ...报错

jessica@jessicadembp web_1入门案例 % python3 manage.py runserver 8000
 

You have 17unapplied migration(s). Your project may not work properly until you apply ...

解决方法：

执行一下这个：python manage.py migrate

它可以让我们在修改Model后可以在不影响现有数据的前提下重建表结构。