Python 从Django站点尝试教程时出现AppRegistryNotReady错误

我正在尝试Django网站上提供的教程。当我试图在命令下运行时，我遇到了错误

q = Question.objects.get(pk=1)
q.choice_set.all()
Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "C:\Python27\lib\site-packages\django\db\models\manager.py", line 228, in all
    return self.get_queryset()
  File "C:\Python27\lib\site-packages\django\db\models\fields\related.py", line 706, in get_queryset
    qs = qs.filter(**self.core_filters)
  File "C:\Python27\lib\site-packages\django\db\models\query.py", line 679, in filter
    return self._filter_or_exclude(False, *args, **kwargs)
  File "C:\Python27\lib\site-packages\django\db\models\query.py", line 697, in _filter_or_exclude
    clone.query.add_q(Q(*args, **kwargs))
  File "C:\Python27\lib\site-packages\django\db\models\sql\query.py", line 1304, in add_q
    clause, require_inner = self._add_q(where_part, self.used_aliases)
  File "C:\Python27\lib\site-packages\django\db\models\sql\query.py", line 1332, in _add_q
    allow_joins=allow_joins, split_subq=split_subq,
  File "C:\Python27\lib\site-packages\django\db\models\sql\query.py", line 1144, in build_filter
    lookups, parts, reffed_aggregate = self.solve_lookup_type(arg)
  File "C:\Python27\lib\site-packages\django\db\models\sql\query.py", line 1030, in solve_lookup_type
    _, field, _, lookup_parts = self.names_to_path(lookup_splitted, self.get_meta())
  File "C:\Python27\lib\site-packages\django\db\models\sql\query.py", line 1367, in names_to_path
    if field.is_relation and not field.related_model:
  File "C:\Python27\lib\site-packages\django\utils\functional.py", line 60, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "C:\Python27\lib\site-packages\django\db\models\fields\related.py", line 110, in related_model
    apps.check_models_ready()
  File "C:\Python27\lib\site-packages\django\apps\registry.py", line 131, in check_models_ready
    raise AppRegistryNotReady("Models aren't loaded yet.")
AppRegistryNotReady: Models aren't loaded yet.

这是我的manage.py代码

#!/usr/bin/env python
import os
import sys

if __name__ == "__main__":
    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "demo.settings")

    from django.core.management import execute_from_command_line

    execute_from_command_line(sys.argv)

这是我的wsgi文件

"""
WSGI config for demo project.

It exposes the WSGI callable as a module-level variable named ``application``.

For more information on this file, see
https://docs.djangoproject.com/en/1.8/howto/deployment/wsgi/
"""

import os

from django.core.wsgi import get_wsgi_application

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "demo.settings")

application = get_wsgi_application()

我不确定我到底做错了什么。我遵循了教程，但它在这里中断

---

我正在使用python 2.7.9和Django 1.8.2

在哪里运行代码？您是否使用

manage.py shell

启动加载了django的python shell？显示您的wsgi文件，我认为它或您的manage有问题。pyI仅使用manage.py shell（使用pydev）运行我的代码。我不熟悉pydev

manage.py shell

应该为您运行

django.setup（）

。您可以尝试手动执行此操作<代码>导入django；django.setup（）以查看是否已修复。您在哪里运行代码？您是否使用

manage.py shell

启动加载了django的python shell？显示您的wsgi文件，我认为它或您的manage有问题。pyI仅使用manage.py shell（使用pydev）运行我的代码。我不熟悉pydev

manage.py shell

应该为您运行

django.setup（）

。您可以尝试手动执行此操作<代码>导入django；django.setup（）以查看这是否可以修复它。

"""
WSGI config for demo project.

It exposes the WSGI callable as a module-level variable named ``application``.

For more information on this file, see
https://docs.djangoproject.com/en/1.8/howto/deployment/wsgi/
"""

import os

from django.core.wsgi import get_wsgi_application

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "demo.settings")

application = get_wsgi_application()