在芹菜任务中使用django模型

我有一个用例,我需要导入一些 django 内部模型 celery.py 归档 django-celery

我的项目如下:

|-- backend
|   |-- backend
|   |   |-- __init__.py
|   |   |-- celery.py
|   |   |-- settings.py
|   |   |-- urls.py
|   |   `-- wsgi.py
|   |-- bobbers
|   |   |-- __init__.py
|   |   |-- admin.py
|   |   |-- apps.py
|   |   |-- models.py
|   |   |-- serializers.py
|   |   |-- tests.py
|   |   |-- urls.py
|   |   `-- views.py
|   |-- manage.py
|   |-- requirements.txt

芹菜相关档案的所有内容( backend/backend/__init__.py ,和 backend/backend/celery.py official docs .

但一旦我加上这句话 import bobbers.models as bobber_models 芹菜.py 文件,我得到臭名昭著的 AppRegistryNotReady 以下stacktrace出错:

  File "/usr/local/lib/python3.7/site-packages/django/db/models/base.py", line 87, in __new__
    app_config = apps.get_containing_app_config(module)
  File "/usr/local/lib/python3.7/site-packages/django/apps/registry.py", line 249, in get_containing_app_config
    self.check_apps_ready()
  File "/usr/local/lib/python3.7/site-packages/django/apps/registry.py", line 132, in check_apps_ready
    raise AppRegistryNotReady("Apps aren't loaded yet.")
django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.

所以我怎样才能安全地导入 在我编写 celery 任务?