Python [解决方法] error: Requested setting INSTALLED_APPS, but settings are not configured

Python [解决方法] error: Requested setting INSTALLED_APPS, but settings are not configured

参考文章：

（1）Python [解决方法] error: Requested setting INSTALLED_APPS, but settings are not configured

（2）https://www.cnblogs.com/Pjwork/p/9383060.html

（3）https://www.javazxz.com/thread-2589-1-1.html

备忘一下。