Django 2.0教程问题：无法访问Django-Admin Shell

Hey there, let's break down why you're running into this settings error and how to fix it quickly!

The Root Cause #

The django-admin command is a global Django utility, and it doesn't automatically know where your project's settings file lives. When you tried using django-admin shell without proper configuration, Django can't find the USE_I18N setting (and others) it needs to initialize the shell.

Your previous attempts didn't work for these reasons:

• Calling settings.configure() in a plain Python shell only sets up a bare-bones default configuration, not your project's actual settings.
• When you used django-admin.py shell --settings=mysite.settings, Django probably couldn't locate the mysite module because your current working directory wasn't added to Python's path.

The Simplest Fix: Use manage.py Instead #

Every Django project comes with a manage.py file in its root directory—this file is pre-configured to point to your project's settings automatically. Here's what to do:

1. First, navigate to your project's root directory (the one that contains manage.py). From your terminal output, it looks like you're in mysite3, but double-check that manage.py is there.
2. Run this command:

   python manage.py shell
   

This should launch the Django shell without any settings errors, since manage.py handles the DJANGO_SETTINGS_MODULE setup for you.

If You Must Use django-admin shell #

If you prefer using django-admin for some reason, you need to explicitly tell Django where your settings are and ensure your project root is in Python's path:

1. Set the environment variable for your settings module:

   export DJANGO_SETTINGS_MODULE=mysite.settings
   

2. Add your project root directory to Python's path (replace the path below with your actual project root):

   export PYTHONPATH=/Users/coreydickinson/mysite/DJDev/env2/mysite3
   

3. Now run the shell command:

   django-admin shell
   

You can also combine these into a single command to avoid setting variables every time:

DJANGO_SETTINGS_MODULE=mysite.settings PYTHONPATH=/Users/coreydickinson/mysite/DJDev/env2/mysite3 django-admin shell

Double-Check Your Project Structure #

Make sure your project has the standard Django structure, like this:

mysite3/
├── manage.py
└── mysite/
    ├── settings.py
    ├── urls.py
    └── wsgi.py

If your settings.py is in a different location, adjust the DJANGO_SETTINGS_MODULE value accordingly (e.g., if it's in mysite3/config/settings.py, use config.settings).

内容的提问来源于stack exchange，提问作者StupidQuestionGuy