You must either define the environment variable DJANGO_SETTINGS_MODULE or call settings.configure()

django 在vscode的中调试时出现的环境问题配置

1. 错误信息提示未配置安装应用，django的环境配置文件是manage.py文件，查看文件发现文件中含有if __name__ = __main__，这个文件肯定是有备用供程序当模块使用的功能

>>> from blog.models import Person
django.core.exceptions.ImproperlyConfigured: Requested setting INSTALLED_APPS, 
but settings are not configured. You must either define the environment variable
 DJANGO_SETTINGS_MODULE or call settings.configure() before accessing settings.

2. 解决方法：
   • 直接在解释器中引入manage.py，调用main()函数，配置环境及安装APP

    >>> import manage       
    >>> manage.main()
   

   自动完成配置信息
3. 成功在解释器中导入模型调试

>>> from blog.models import Person
>>>

python verson 3.7
django verson 3.0