无法修复错误“django.core.exceptions.AppRegistryNotReady：尚未加载应用程序。”答案

【问题标题】：cannot fix error "django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet."无法修复错误“django.core.exceptions.AppRegistryNotReady：尚未加载应用程序。”
【发布时间】：2018-10-20 04:48:48
【问题描述】：

您好，我今天刚开始我的 Django 项目，在尝试python manage.py migrate 时出现以下错误：

Traceback (most recent call last):
  File "manage.py", line 15, in <module>
    execute_from_command_line(sys.argv)
  File "/home/danni/.local/lib/python3.6/site-packages/django/core/management/__init__.py", line 371, in execute_from_command_line
    utility.execute()
  File "/home/danni/.local/lib/python3.6/site-packages/django/core/management/__init__.py", line 365, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/danni/.local/lib/python3.6/site-packages/django/core/management/__init__.py", line 216, in fetch_command
    klass = load_command_class(app_name, subcommand)
  File "/home/danni/.local/lib/python3.6/site-packages/django/core/management/__init__.py", line 36, in load_command_class
    module = import_module('%s.management.commands.%s' % (app_name, name))
  File "/home/danni/anaconda3/lib/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/danni/.local/lib/python3.6/site-packages/django/core/management/commands/migrate.py", line 12, in <module>
    from django.db.migrations.autodetector import MigrationAutodetector
  File "/home/danni/.local/lib/python3.6/site-packages/django/db/migrations/autodetector.py", line 11, in <module>
    from django.db.migrations.questioner import MigrationQuestioner
  File "/home/danni/.local/lib/python3.6/site-packages/django/db/migrations/questioner.py", line 9, in <module>
    from .loader import MigrationLoader
  File "/home/danni/.local/lib/python3.6/site-packages/django/db/migrations/loader.py", line 8, in <module>
    from django.db.migrations.recorder import MigrationRecorder
  File "/home/danni/.local/lib/python3.6/site-packages/django/db/migrations/recorder.py", line 9, in <module>
    class MigrationRecorder:
  File "/home/danni/.local/lib/python3.6/site-packages/django/db/migrations/recorder.py", line 22, in MigrationRecorder
    class Migration(models.Model):
  File "/home/danni/.local/lib/python3.6/site-packages/django/db/models/base.py", line 100, in __new__
    app_config = apps.get_containing_app_config(module)
  File "/home/danni/.local/lib/python3.6/site-packages/django/apps/registry.py", line 244, in get_containing_app_config
    self.check_apps_ready()
  File "/home/danni/.local/lib/python3.6/site-packages/django/apps/registry.py", line 127, in check_apps_ready
    raise AppRegistryNotReady("Apps aren't loaded yet.")
django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.

然后我运行python manage.py check 并得到以下错误：

    raise ImproperlyConfigured("The SECRET_KEY setting must not be empty.")
django.core.exceptions.ImproperlyConfigured: The SECRET_KEY setting must not be empty.

到目前为止，我的项目结构是：我在project/project/settings 创建了一个设置文件夹，并有三个文件base.py（我重命名并从项目/项目/名称移动的那个），production.py，staging.py，test.py，其中仅包含一行from base import *还有一个空的__init__.py。

对于帐户应用，它位于apps/account 下。我已经添加了urls.py。另外，我在base.py 中的INSTALLED_APPS 下添加了“帐户”。

谁能告诉我如何解决这个问题？非常感谢！

【问题讨论】：

检查已安装应用之间的逗号，发布您的 settings.py
听起来 Django 可以访问您的设置文件，但无法访问 SECRET_KEY 值。你改成引用os.environ.get('SECRET_KEY')了吗？

标签： python django debugging configuration settings

【解决方案1】：

由于您已将settings.py 文件更改为设置文件夹，因此您必须更新manage.py 文件以指向新的设置模块，位于manage.py

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'example.settings')
# Here update the string 'example.settings' to the new settings module
# e.g os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'project.settings.test')

【讨论】：