如何在 Django 项目的任何位置获取任何脚本的 BASE_DIR？

Question

I can import BASE_DIR in the shell as follows:

In [3]: from scriptcitymirror.settings import BASE_DIR

In [4]: BASE_DIR
Out[4]: '/home/cchilders/projects/django_practice/scriptcity_public'

but in the script that writes the app for me, I cannot import the exact same thing:

#!/usr/bin/env python

import os, subprocess, sys, re, requests, time
from scriptcitymirror.settings import BASE_DIR

blows up as:

cchilders@cody_pc:~/projects/django_practice/scriptcity_public$ robots/app_writer.py 
Traceback (most recent call last):
  File "robots/app_writer.py", line 4, in <module>
    from scriptcitymirror.settings import BASE_DIR
ImportError: No module named scriptcitymirror.settings

I'm stunned. Also, a way I usually do it the main directory (the urls.py file in the dir with settings.py), did not work:

from django.conf import settings
settings.configure()

print settings.MEDIA_URL

Right now my ugly work around is calling CWD=os.getcwd() and requiring the script to by run from the home project path. My folders look like the following pic. How can get BASE_DIR correctly anywhere within django project? (but here, I want to use them in 'robots', which is not an app. the import did not work after making a test app either). Thank you

Answer 1

First of all, you should not import your project's settings because it will be missing default settings. So, in order to get all the settings you should always import django.conf.settings .

Second, Django docs say django.conf.settings is not a module - it's an object. So you can't import individual settings.

# WRONG way (will not work)
from django.conf.settings import BASE_DIR


# CORRECT way
from django.conf import settings
base_dir = settings.BASE_DIR

See this page: Using settings in Python code