Develop Reference

Adding a Second URL Pattern in Django Causes Attribute Error [duplicate]

I've been trying to learn Django for the past few days, but recently I've stumbled upon a problem I can't seem to fix. After finishing Django's own tutorial on writing your first app I decided to go through it again. Only now I would replace everything to fit the requirements of the original app I was building.
So, everything went well until I got to part 3. When I try to load http://localhost:8000/lru/ I get the following error message:
AttributeError at /lru/
'module' object has no attribute 'index'
Traceback:
Internal Server Error: /favicon.ico
Traceback (most recent call last):
File "/Library/Python/2.7/site-packages/django/core/handlers/base.py", line 92, in get_response
response = middleware_method(request)
File "/Library/Python/2.7/site-packages/django/middleware/common.py", line 69, in process_request
if (not urlresolvers.is_valid_path(request.path_info, urlconf) and
File "/Library/Python/2.7/site-packages/django/core/urlresolvers.py", line 551, in is_valid_path
resolve(path, urlconf)
File "/Library/Python/2.7/site-packages/django/core/urlresolvers.py", line 440, in resolve
return get_resolver(urlconf).resolve(path)
File "/Library/Python/2.7/site-packages/django/core/urlresolvers.py", line 319, in resolve
for pattern in self.url_patterns:
File "/Library/Python/2.7/site-packages/django/core/urlresolvers.py", line 347, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/Library/Python/2.7/site-packages/django/core/urlresolvers.py", line 342, in urlconf_module
self._urlconf_module = import_module(self.urlconf_name)
File "/Library/Python/2.7/site-packages/django/utils/importlib.py", line 35, in import_module
__import__(name)
File "/Users/oyvindhellenes/Desktop/Sommerjobb 2013/mysite/mysite/urls.py", line 10, in <module>
url(r'^lru/', include('lru.urls', namespace="lru")),
File "/Library/Python/2.7/site-packages/django/conf/urls/__init__.py", line 25, in include
urlconf_module = import_module(urlconf_module)
File "/Library/Python/2.7/site-packages/django/utils/importlib.py", line 35, in import_module
__import__(name)
File "/Users/oyvindhellenes/Desktop/Sommerjobb 2013/mysite/lru/urls.py", line 6, in <module>
url(r'^$', views.index, name='index')
AttributeError: 'module' object has no attribute 'index'
My code:
views.py
from django.http import HttpResponse
def index(request):
return HttpResponse("Hello, world. You're at the poll index.")
lru/urls.py
from django.conf.urls import patterns, url
from lru import views
urlpatterns = patterns('',
url(r'^$', views.index, name='index')
)
mysite/urls.py
from django.conf.urls import patterns, include, url
from django.contrib import admin
admin.autodiscover()
urlpatterns = patterns('',
url(r'^polls/', include('polls.urls', namespace="polls")),
url(r'^admin/', include(admin.site.urls)),
url(r'^lru/', include('lru.urls', namespace="lru")),
)
My folder structure looks like this:
mysite/
lru
templates
polls
manage.py
mysite
lru/
templates
urls.py
admin.py
__init__.py
models.py
tests.py
views.py
It's strange because I've done everything exactly as I did in the "polls" example turtorial. Just replacing the names. When I comment out url(r'^lru/', include('lru.urls', namespace="lru")), in mysite/urls.py, then http://localhost:8000/polls/ works fine, but I just can't seem to get /lru to work.
This is really killing me so any form of help would be appreciative!
Edit: Added full traceback

Import the urls.py module into your view. like this;
from django.http import HttpResponse
from . import urls
def index(request):
return HttpResponse("Hello, world. You're at the poll index.")

Either do this :
from lru.views import *
urlpatterns = patterns(
'',
url(r'^$', index, name='index')
)
or
from lru import views
urlpatterns = patterns(
'',
url(r'^$', 'views.index', name='index')
)
I hope this helps.

The second argument of url() should be string, anway I would change the lru/urls.py to:
from django.conf.urls import patterns, url
urlpatterns = patterns('',
url(r'^$', 'lru.views.index', name='lru-index')
)
Hope it helps!

I just found out that Sublime text was mixing .... and tabs to make indentation, depending, I guess, on the copy/paste source.

This is how Django URLs works:
The urls from mysite/mysite/urls includes mysite/polls/urls, which tells that there are polls created inside the mysite project;
The mysite/polls/urls file tells us that the url "polls/", whenever visited, should call the function index() from mysite/polls/views which is what it states when you type the line:
urlpatterns = [
path('', views.index, name = 'index'),
]
And a very important thing to remember is to save each edited file before you run the server, so that files get updated. You can also keep the server running and save the files.

Merging a Django1.5/python2 and a Django1.6/python3 app: ValueError at / need more than 1 value to unpack

I'm trying to merge an existing Django app with an existing Django framework. This is causing some problems, as they were developed using different python/Django versions, but I'm getting on pretty well.
I'm running into a bug I can't seem to wrap my head around now though. I'm convinced I'm doing something wrong in the urls.py files, but I can't seem to figure out what exactly.
So, here's the error I'm getting:
Environment:
Request Method: GET
Request URL: http://localhost:8000/
Django Version: 1.6.4
Python Version: 3.4.0
Installed Applications:
('django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'kapstok',
'forecast',
'prefscan.survey',
'prefscan.ipblocker',
'prefscan.util',
'prefscan.controlcenter')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware')
Traceback:
File "/usr/lib/python3.4/site-packages/django/core/handlers/base.py" in get_response
101. resolver_match = resolver.resolve(request.path_info)
File "/usr/lib/python3.4/site-packages/django/core/urlresolvers.py" in resolve
337. for pattern in self.url_patterns:
File "/usr/lib/python3.4/site-packages/django/core/urlresolvers.py" in url_patterns
365. patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/usr/lib/python3.4/site-packages/django/core/urlresolvers.py" in urlconf_module
360. self._urlconf_module = import_module(self.urlconf_name)
File "/usr/lib/python3.4/importlib/__init__.py" in import_module
104. return _bootstrap._gcd_import(name[level:], package, level)
File "/home/linus/fo/web-framework/pi/urls.py" in <module>
13. url(r'^prefscan/', include('prefscan.urls', namespace="prefscan")),
File "/usr/lib/python3.4/site-packages/django/conf/urls/__init__.py" in include
26. urlconf_module = import_module(urlconf_module)
File "/usr/lib/python3.4/importlib/__init__.py" in import_module
104. return _bootstrap._gcd_import(name[level:], package, level)
File "/home/linus/fo/web-framework/prefscan/urls.py" in <module>
56. add_to_builtins('util.templatetags.closure_extras')
File "/usr/lib/python3.4/site-packages/django/template/base.py" in add_to_builtins
1331. builtins.append(import_library(module))
File "/usr/lib/python3.4/site-packages/django/template/base.py" in import_library
1263. if is_library_missing(taglib_module):
File "/usr/lib/python3.4/site-packages/django/template/base.py" in is_library_missing
1247. return is_library_missing(path)
File "/usr/lib/python3.4/site-packages/django/template/base.py" in is_library_missing
1247. return is_library_missing(path)
File "/usr/lib/python3.4/site-packages/django/template/base.py" in is_library_missing
1242. path, module = name.rsplit('.', 1)
Exception Type: ValueError at /
Exception Value: need more than 1 value to unpack
Which seems to point to the pi/urls.py file. This file looks like:
from django.conf.urls import patterns, include, url
from django.contrib import admin
admin.autodiscover()
urlpatterns = patterns('',
# Examples:
# url(r'^$', 'pi.views.home', name='home'),
# url(r'^blog/', include('blog.urls')),
url(r'^', include('kapstok.urls', namespace="kapstok")),
url(r'^admin/', include(admin.site.urls)),
url(r'^prefscan/', include('prefscan.urls', namespace="prefscan")),
)
Whenever I comment out the line url(r'^prefscan/', ...), the error goes away.
prefscan/urls.py looks like this:
import django
if django.VERSION < (1, 6):
from django.conf.urls.defaults import patterns, include, url
else:
from django.conf.urls import patterns, include, url
from django.contrib.staticfiles.urls import staticfiles_urlpatterns
from django.template.loader import add_to_builtins
import prefscan.controlcenter.urls
import prefscan.ipblocker.core
# Uncomment the next two lines to enable the admin:
from django.contrib import admin
admin.autodiscover()
urlpatterns = patterns('',
url(r'^prefscan/$', 'survey.views.login'),
url(r'^prefscan/cc/staff/siteadmin/', include(admin.site.urls)),
url(r'^prefscan/cc/' , include(prefscan.controlcenter.urls.urlpatterns)),
url(r'^prefscan/survey/login/$', 'survey.views.login'),
url(r'^prefscan/survey/logout/$', 'survey.views.logout'),
url(r'^prefscan/language/(?P<language>[a-z]+)/$', 'survey.views.set_preferred_language'),
url(r'^prefscan/survey/$', 'survey.views.choose'),
url(r'^prefscan/survey/questionnaire/(?P<survey_id>\d+)/$','survey.views.questionnaire'),
url(r'^prefscan/survey/(?P<survey_id>\d+)/$', 'survey.views.detail'),
url(r'^prefscan/survey/pdf/(?P<survey_id>\d+)/$', 'survey.views.response_pdf'),
url(r'^prefscan/survey/json/(?P<survey_id>\d+)/$', 'survey.views.json_get_assignment'),
url(r'^prefscan/survey/json/list$', 'survey.views.json_list_surveys'),
url(r'^prefscan/survey/json/cards/(?P<survey_id>\d+)/$', 'survey.views.json_list_cards'),
url(r'^prefscan/survey/json/shape/(?P<survey_id>\d+)/$', 'survey.views.json_list_shape'),
url(r'^prefscan/survey/json/savequest/(?P<survey_id>\d+)/$','survey.views.json_store_questionnaire'),
url(r'^prefscan/survey/json/store/(?P<survey_id>\d+)/$', 'survey.views.json_store_assignment'),
url(r'^prefscan/survey/json/load/(?P<survey_id>\d+)/$', 'survey.views.json_load_assignment'),
url(r'^prefscan/survey/json/send/(?P<survey_id>\d+)/$', 'survey.views.json_send_response'),
url(r'^prefscan/survey/keepalive/$', 'survey.views.keep_alive'),
)
urlpatterns += staticfiles_urlpatterns()
js_info_dict = {
'domain': 'djangojs',
'packages': ('js'),
}
urlpatterns += patterns('',
(r'^jsi18n/$', 'django.views.i18n.javascript_catalog', js_info_dict),
)
urlpatterns += prefscan.ipblocker.core.urlpatterns
add_to_builtins('util.templatetags.closure_extras')
add_to_builtins('django.templatetags.i18n')
I'm just not seeing what's going wrong! The prefscan line seems identical to the kapstok line, which works without hiccups.

What is causing this error on part 3 of Django tutorial?

I have run into an issue while working through the Django tutorial, specifically when adding more views to the poll application. For reference, this is the beginning of the section that trips me up: https://docs.djangoproject.com/en/1.5/intro/tutorial03/#writing-more-views
Prior to that section, I can get the polls/ view to show up with no issue. But when I add three additional views to make polls/views.py look like this:
def detail(request, poll_id):
return HttpResponse("You're looking at poll %s." % poll_id)
def results(request, poll_id):
return HttpResponse("You're looking at the results of poll %s." % poll_id)
def vote(request, poll_id):
return HttpResponse("You're voting on poll %s." % poll_id)
and then make polls/urls.py look like this:
from django.conf.urls import patterns, url
from polls import views
urlpatterns = patterns('',
# ex: /polls/
url(r'^$', views.index, name='index'),
# ex: /polls/5/
url(r'^(?P<poll_id>\d+)/$', views.detail, name='detail'),
# ex: /polls/5/results/
url(r'^(?P<poll_id>\d+)/results/$', views.results, name='results'),
# ex: /polls/5/vote/
url(r'^(?P<poll_id>\d+)/vote/$', views.vote, name='vote'),
)
I get an error. As an aside, my mysite ROOT_URLCONF is pointing to mysite/urls.py which looks like this:
from django.conf.urls import patterns, include, url
from django.contrib import admin
admin.autodiscover()
urlpatterns = patterns('',
url(r'^polls/', include('polls.urls')),
url(r'^admin/', include(admin.site.urls)),
)
The error that I am getting is:
Environment:
Request Method: GET
Request URL: http://127.0.0.1:8000/polls/34
Django Version: 1.5.1
Python Version: 2.7.3
Installed Applications:
('django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.staticfiles',
'django.contrib.admin',
'polls')
Installed Middleware:
('django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware')
Traceback:
File "/home/matthew/.virtualenvs/djangopoll/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
92. response = middleware_method(request)
File "/home/matthew/.virtualenvs/djangopoll/local/lib/python2.7/site-packages/django/middleware/common.py" in process_request
69. if (not urlresolvers.is_valid_path(request.path_info, urlconf) and
File "/home/matthew/.virtualenvs/djangopoll/local/lib/python2.7/site-packages/django/core/urlresolvers.py" in is_valid_path
551. resolve(path, urlconf)
File "/home/matthew/.virtualenvs/djangopoll/local/lib/python2.7/site-packages/django/core/urlresolvers.py" in resolve
440. return get_resolver(urlconf).resolve(path)
File "/home/matthew/.virtualenvs/djangopoll/local/lib/python2.7/site-packages/django/core/urlresolvers.py" in resolve
319. for pattern in self.url_patterns:
File "/home/matthew/.virtualenvs/djangopoll/local/lib/python2.7/site-packages/django/core/urlresolvers.py" in url_patterns
347. patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/home/matthew/.virtualenvs/djangopoll/local/lib/python2.7/site-packages/django/core/urlresolvers.py" in urlconf_module
342. self._urlconf_module = import_module(self.urlconf_name)
File "/home/matthew/.virtualenvs/djangopoll/local/lib/python2.7/site-packages/django/utils/importlib.py" in import_module
35. __import__(name)
File "/home/matthew/djangopoll/mysite/mysite/urls.py" in <module>
8. url(r'^polls/', include('polls.urls')),
File "/home/matthew/.virtualenvs/djangopoll/local/lib/python2.7/site-packages/django/conf/urls/__init__.py" in include
25. urlconf_module = import_module(urlconf_module)
File "/home/matthew/.virtualenvs/djangopoll/local/lib/python2.7/site-packages/django/utils/importlib.py" in import_module
35. __import__(name)
Exception Type: SyntaxError at /polls/34
Exception Value: invalid syntax (urls.py, line 9)
Also, the following may be informative:
Using Django 1.5
Using Python 2.7.3
Using Django 1.5 documentation
Using VirtualBox
Using VirtualEnv
Any help is appreciated! Why am I getting this error?

Looks like Python cannot import polls.urls - that's why __import__(name) fails. The "name" here would be your module name, 'polls.urls'.
To find out why the system cannot import your polls.urls, try importing it interactively.
$ python manage.py shell
Python ... blah blah
...
> import polls.urls
This will fail, but the traceback will give you the next clue to where your error is.
Good luck!

Django error: cannot import name current_datetime

I'm Working through "The Django Book" and I keep getting the error "cannot import name current_datetime"
Urls.py:
from django.conf.urls.defaults import patterns, include, url
from mysite.views import current_datetime, hello
urlpatterns = patterns('',
('^hello/$', hello),
('^time/$', current_datetime),
(r'^time/plus/(\d{1,2})/$', hours_ahead),
)
My Views.py:
from django.http import HttpResponse
import datetime
def hello(request):
return HttpResponse("Hello world")
def current_datetime(request):
now = datetime.datetime.now()
html = "<html><body>It is now %s.</body></html>" % now
return HttpResponse(html)
My working directory:
./mysite:
__init__.py manage.py mysite views.py
No matter what I do, I get the same import error in urls.py line 2, regarding current_time:
Environment:
Request Method: GET
Request URL: http://localhost:8000/
Django Version: 1.5.1
Python Version: 2.7.3
Installed Applications:
('django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.staticfiles')
Installed Middleware:
('django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware')
Traceback:
File "/Library/Python/2.7/site-packages/django/core/handlers/base.py" in get_response
103. resolver_match = resolver.resolve(request.path_info)
File "/Library/Python/2.7/site-packages/django/core/urlresolvers.py" in resolve
319. for pattern in self.url_patterns:
File "/Library/Python/2.7/site-packages/django/core/urlresolvers.py" in url_patterns
347. patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/Library/Python/2.7/site-packages/django/core/urlresolvers.py" in urlconf_module
342. self._urlconf_module = import_module(self.urlconf_name)
File "/Library/Python/2.7/site-packages/django/utils/importlib.py" in import_module
35. __import__(name)
File "/Users/jvieitez/Code/djcode/mysite/mysite/urls.py" in <module>
2. from mysite.views import hello, current_datetime, hours_ahead
Exception Type: ImportError at /
Exception Value: cannot import name current_datetime

Something is wrong with your working directory. manage.py and views.py should not be in the same directory. I would recommend renaming the inner mysite to something else, so you avoid the confusion, and views.py should be in the inner mysite directory. You said
from mysite.views import current_datetime, hello
but views.py isn't in the mysite directory. That's the problem.

No module named index

I am getting the error
Exception Value:No module named index. i have __init__.py in DjangoPhoneBook and phonebook folder. I'm newbie to django and i m following the tutorial on djangoproject website. I have googled this error but not getting any solutions.
What is cause and solution to this problem??
Environment:
Request Method: GET
Request URL: http://localhost:8000/Book/
Django Version: 1.2.3
Python Version: 2.6.6
Installed Applications:
['django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'phonebook',
'django.contrib.admin']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware')
Traceback:
File "/usr/lib/pymodules/python2.6/django/core/handlers/base.py" in get_response
91. request.path_info)
File "/usr/lib/pymodules/python2.6/django/core/urlresolvers.py" in resolve
217. sub_match = pattern.resolve(new_path)
File "/usr/lib/pymodules/python2.6/django/core/urlresolvers.py" in resolve
215. for pattern in self.url_patterns:
File "/usr/lib/pymodules/python2.6/django/core/urlresolvers.py" in _get_url_patterns
244. patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/usr/lib/pymodules/python2.6/django/core/urlresolvers.py" in _get_urlconf_module
239. self._urlconf_module = import_module(self.urlconf_name)
File "/usr/lib/pymodules/python2.6/django/utils/importlib.py" in import_module
35. __import__(name)
Exception Type: ImportError at /Book/
Exception Value: No module named index
Contents of urls.py is
from django.conf.urls.defaults import *
from django.contrib import admin
admin.autodiscover()
from DjangoPhoneBook.phonebook.views import *
urlpatterns = patterns('',
(r'^Book/$', include('index'))
(r'^admin/', include(admin.site.urls)),
)
and of views.py is
from django.http import HttpResponse
def index(request):
return HttpResponse("This is a view page")

Remove the include from your first line. include is the syntax for adding a separate url conf, so python is looking for a module called index.
Change it to the full python dot path to your view function.
urlpatterns = patterns('',
(r'^Book/$', 'path.to.my.views.index'), # <-- and add a comma here
(r'^admin/', include(admin.site.urls)),
)
edit: I notice you are importing your view functions. You can also specify the view function itself
urlpatterns = patterns('',
(r'^Book/$', index),
(r'^admin/', include(admin.site.urls)),
)