在Django 1.8和Python 2.7.8中填充时，“模型尚未加载”错误

我正在使用此代码来填充我的数据库：

import os def populate(): python_cat = add_cat('Python') add_page(cat=python_cat, title="Official Python Tutorial", url="http://docs.python.org/2/tutorial/") add_page(cat=python_cat, title="How to Think like a Computer Scientist", url="http://www.greenteapress.com/thinkpython/") add_page(cat=python_cat, title="Learn Python in 10 minutes", url="http://www.korokithakis.net/tutorials/python/") django_cat = add_cat(name="Django") add_page(cat=django_cat, title="Official Django Tutorial", url="http://djangoproject.com/en/1.5/intro/tutorial01/") add_page(cat=django_cat, title="Django Rocks", url="http://www.djangorocks.com/") add_page(cat=django_cat, title="How to Tango with Django", url="htttp://www.tangowithdjango.com/") frame_cat = add_cat(name="Other Frameworks") add_page(cat=frame_cat, title="Bottle", url="http://bottlepy.org/docs/dev/") add_page(cat=frame_cat, title="Flask", url="http://flask.pocoo.org") # Print out what we have added to the user. for c in Category.objects.all(): for p in Page.objects.filter(category=c): print "- {0} - {1}".format(str(c), str(p)) def add_page(cat, title, url, views=0): p = Page.objects.get_or_create(category=cat, title=title, url=url, views=views)[0] return p def add_cat(name): c = Category.objects.get_or_create(name=name) return c if __name__ == '__main__': print "Starting Rango population script..." os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'p.settings') from rango.models import Category, Page populate() 

在跑步

 python c:\python27\p\populate_rango.py 

它给出了错误：

 Staring Rango population script... Traceback (most recent call last): File "c:\python27\p\populate_rango.py", line 59, in <module> populate() File "c:\python27\p\populate_rango.py", line 4, in populate python_cat = add_cat('Python') File "c:\python27\p\populate_rango.py", line 52, in add_cat c = Category.objects.get_or_create(name=name) File "C:\Python27\Lib\site-packages\django\db\models\manager.py", li manager_method return getattr(self.get_queryset(), name)(*args, **kwargs) File "C:\Python27\Lib\site-packages\django\db\models\query.py", line et_or_create return self.get(**lookup), False File "C:\Python27\Lib\site-packages\django\db\models\query.py", line clone = self.filter(*args, **kwargs) File "C:\Python27\Lib\site-packages\django\db\models\query.py", line ilter return self._filter_or_exclude(False, *args, **kwargs) File "C:\Python27\Lib\site-packages\django\db\models\query.py", line filter_or_exclude clone.query.add_q(Q(*args, **kwargs)) File "C:\Python27\Lib\site-packages\django\db\models\sql\query.py", 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", in _add_q current_negated=current_negated, connector=connector) File "C:\Python27\Lib\site-packages\django\db\models\sql\query.py", in build_filter lookups, parts, reffed_aggregate = self.solve_lookup_type(arg) File "C:\Python27\Lib\site-packages\django\db\models\sql\query.py", in solve_lookup_type _, field, _, lookup_parts = self.names_to_path(lookup_splitted, se a()) File "C:\Python27\Lib\site-packages\django\db\models\sql\query.py", in names_to_path field, model, direct, m2m = opts.get_field_by_name(name) File "C:\Python27\Lib\site-packages\django\db\models\options.py", li get_field_by_name cache = self.init_name_map() File "C:\Python27\Lib\site-packages\django\db\models\options.py", li init_name_map for f, model in self.get_all_related_m2m_objects_with_model(): File "C:\Python27\Lib\site-packages\django\db\models\options.py", li get_all_related_m2m_objects_with_model cache = self._fill_related_many_to_many_cache() File "C:\Python27\Lib\site-packages\django\db\models\options.py", li _fill_related_many_to_many_cache for klass in self.apps.get_models(): File "C:\Python27\Lib\site-packages\django\utils\lru_cache.py", line rapper result = user_function(*args, **kwds) File "C:\Python27\Lib\site-packages\django\apps\registry.py", line 1 _models *self.check_models_ready() File "C:\Python27\Lib\site-packages\django\apps\registry.py", line 1 ck_models_ready raise AppRegistryNotReady("Models aren't loaded yet.") django.core.exceptions.AppRegistryNotReady: Models aren't loaded yet.* 

其余的我的文件是好的，但得到这个错误。 我正在使用Django书中的Tango教程，但是由于本书引用了Django 1.5.4，我正在使用Django 1.8，所以任何人都可以在这里帮助我吗？

Answer 1

我有与Django 1.7rc2相同的例外。 解决方法是在我的程序开始时添加这些行：

 import django django.setup() 

更新： 现在已经为Django 1.8进行了logging。

Answer 2

我们得到这个错误。 我们的项目从Django 1.4开始，先是1.5，然后是1.7。 我们的wsgi.py是这样的：

 import os import sys from django.core.handlers.wsgi import WSGIHandler os.environ['DJANGO_SETTINGS_MODULE'] = 'myapp.settings' application = WSGIHandler() 

当我更新到1.7风格的WSGI处理程序时：

 import os import sys from django.core.wsgi import get_wsgi_application os.environ['DJANGO_SETTINGS_MODULE'] = 'myapp.settings' application = get_wsgi_application() 

现在一切正常。

Answer 3

以及为Django的1.9.x：

populate_rango.py：

 import os import sys from django.core.wsgi import get_wsgi_application os.environ['DJANGO_SETTINGS_MODULE'] = 'tango_with_django_project.settings' application = get_wsgi_application() def populate(): python_cat = add_cat('Python') add_page(cat=python_cat, title="Official Python Tutorial", url="http://docs.python.org/2/tutorial/") add_page(cat=python_cat, title="How to Think like a Computer Scientist", url="http://www.greenteapress.com/thinkpython/") add_page(cat=python_cat, title="Learn Python in 10 Minutes", url="http://www.korokithakis.net/tutorials/python/") django_cat = add_cat("Django") add_page(cat=django_cat, title="Official Django Tutorial", url="https://docs.djangoproject.com/en/1.5/intro/tutorial01/") add_page(cat=django_cat, title="Django Rocks", url="http://www.djangorocks.com/") add_page(cat=django_cat, title="How to Tango with Django", url="http://www.tangowithdjango.com/") frame_cat = add_cat("Other Frameworks") add_page(cat=frame_cat, title="Bottle", url="http://bottlepy.org/docs/dev/") add_page(cat=frame_cat, title="Flask", url="http://flask.pocoo.org") #Print out what we have added to the user. for c in Category.objects.all(): for p in Page.objects.filter(category=c): print ("- {0} - {1}".format(str(c), str(p))) def add_page(cat, title, url, views=0): p = Page.objects.get_or_create(category=cat, title=title, url=url, views=views)[0] return p def add_cat(name): c = Category.objects.get_or_create(name=name)[0] return c # Start execution here! if __name__ == '__main__': print ("Starting Rango population script...") os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'tango_with_django_project.settings') from rango.models import Category, Page populate()