Django-registration部分包含在django中，出现名称错误

Question

我用pip安装了django-registration，版本是0.7。

然后在

urls.py

from core.forms import UserRegistrationForm

from registration.views import register

urlpatterns = patterns('',

    url(r'^accounts/register/$', register, {'backend': 'registration.backends.default.DefaultBackend','form_class': RegistrationForm}, name='registration_register'),
    (r'^accounts/', include('registration.urls')),

)

core/forms.py

from django import forms
from registration.forms import RegistrationForm
class UserRegistrationForm(RegistrationForm):
    name = forms.CharField()

我得到了（更新）

ImportError at /accounts/register/

No module named forms

现在，如果我在命令行里执行：

>>> import registration.forms

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.6/dist-packages/registration/forms.py", line 9, in <module>
    from django.contrib.auth.models import User
  File "/usr/local/lib/python2.6/dist-packages/django/contrib/auth/models.py", line 7, in <module>
    from django.db import models
  File "/usr/local/lib/python2.6/dist-packages/django/db/__init__.py", line 14, in <module>
    if not settings.DATABASES:
  File "/usr/local/lib/python2.6/dist-packages/django/utils/functional.py", line 276, in __getattr__
    self._setup()
  File "/usr/local/lib/python2.6/dist-packages/django/conf/__init__.py", line 40, in _setup
    raise ImportError("Settings cannot be imported, because environment variable %s is undefined." % ENVIRONMENT_VARIABLE)
ImportError: Settings cannot be imported, because environment variable DJANGO_SETTINGS_MODULE is undefined.

我就会遇到这个错误。

不过，import registration是没问题的，我在urls.py中使用registration.views.register也没有问题。

我该怎么做才能找到这个问题的原因呢？

更新：感谢@DrTyrsa，我尝试用python manage.py shell

并且import registration.forms可以正常工作，但在我的文件中却不行。

>>> import registration.forms
>>> import core.forms
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/var/www/vhosts/opineo/core/forms.py", line 2, in <module>
    from registration.forms import RegistrationForm
ImportError: No module named forms

我不明白为什么.. registration是用pip安装的，而且它在python路径里。

Answer 1

解决办法就是“我真是个傻瓜” :)

在我检查所有东西的时候，我发现我有一个叫做registration的文件夹，里面有一个init.py文件。

这个文件夹覆盖了django-registration的内容；我把它改个名字，错误就消失了。