[Django]-Django.core.exceptions.ImproperlyConfigured: Requested setting CACHES, but settings are not configured. You must either define the environment varia

Use this

import os

os.environ['DJANGO_SETTINGS_MODULE'] = 'mysite.settings'

instead of

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "<appname>.settings")

In your python script, you are trying to access Django models before setting the environment try it in this order :

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "<appname>.`settings`")
from <appname>.models import Class1, Class2,...

since, I don’t want to add this in every file, I created
a file called usercustomize.py and added this content:

import os
os.environ['DJANGO_SETTINGS_MODULE']='foosite.settings'

The file path in my case:

src/foosite/usercustomize.py

I installed foosite with “pip install -e”. I am unsure if this works for normal installs.

In my case I needed to use

python3 manage.py check --deploy

instead of

django-admin check --deploy

fill “working directory” correctly with your working path
then write the copy down in it’s place

I got this error when I imported TestCase from unittest2. I fixed it by importing TestCase by:

from django.test import TestCase

My suspicions were raised when the test was labelled “Unittest” rather than “Test”. I had to run the whole suite before Pycharm realised I’d made this change…

If you’re using PyCharm you may have forgotten to choose your debug configuration here: