I’m playing with Django for the first time. I am using a guide called, “Python
from Scratch - Creating a Dynamic Website
<https://www.youtube.com/watch?v=bRnm8f6Wavk>” by [b]Tuts+ Code[/b] from
YouTube. It’s kinda old. It was first posted in November 2011 and Django
has evolved considerably. I’ve had to try different commands, like
‘syncdb’ is no longer used. Now it’s ‘migrate’. Yes, Tuts+ Code is over 6
years old, but it’s the best tutorial in terms of explanations and teaching
style. Anyways.
I’m getting an error saying there is something wrong with my settings.py:
> $ python ../manage.py runserver
> Performing system checks...
> Unhandled exception in thread started by <function wrapper at
> 0x7fe4876e76e0>
> Traceback (most recent call last):
> File
> "/home/gnull/.local/lib/python2.7/site-packages/django/utils/autoreload.py",
> line 228, in wrapper
> fn(*args, **kwargs)
> File
> "/home/gnull/.local/lib/python2.7/site-packages/django/core/management/commands/runserver.py",
>
> line 125, in inner_run
> self.check(display_num_errors=True)
> File
> "/home/gnull/.local/lib/python2.7/site-packages/django/core/management/base.py",
>
> line 359, in check
> include_deployment_checks=include_deployment_checks,
> File
> "/home/gnull/.local/lib/python2.7/site-packages/django/core/management/base.py",
>
> line 346, in _run_checks
> return checks.run_checks(**kwargs)
> File
> "/home/gnull/.local/lib/python2.7/site-packages/django/core/checks/registry.py",
>
> line 81, in run_checks
> new_errors = check(app_configs=app_configs)
> File
> "/home/gnull/.local/lib/python2.7/site-packages/django/core/checks/urls.py",
> line 16, in check_url_config
> return check_resolver(resolver)
> File
> "/home/gnull/.local/lib/python2.7/site-packages/django/core/checks/urls.py",
> line 26, in check_resolver
> return check_method()
> File
> "/home/gnull/.local/lib/python2.7/site-packages/django/urls/resolvers.py",
> line 254, in check
> for pattern in self.url_patterns:
> File
> "/home/gnull/.local/lib/python2.7/site-packages/django/utils/functional.py",
> line 35, in __get__
> res = instance.__dict__[self.name] = self.func(instance)
> File
> "/home/gnull/.local/lib/python2.7/site-packages/django/urls/resolvers.py",
> line 405, in url_patterns
> patterns = getattr(self.urlconf_module, "urlpatterns",
> self.urlconf_module)
> File
> "/home/gnull/.local/lib/python2.7/site-packages/django/utils/functional.py",
> line 35, in __get__
> res = instance.__dict__[self.name] = self.func(instance)
> File
> "/home/gnull/.local/lib/python2.7/site-packages/django/urls/resolvers.py",
> line 398, in urlconf_module
> return import_module(self.urlconf_name)
> File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
> __import__(name)
> File
> "/home/gnull/Dropbox/TECH/python/2017/beginning-Django/G_Thomas/G_Thomas/urls.py",
>
> line 21, in <module>
> url(r'^$', 'blog.views.home', name='home')
> File
> "/home/gnull/.local/lib/python2.7/site-packages/django/conf/urls/__init__.py",
>
> line 85, in url
> raise TypeError('view must be a callable or a list/tuple in the case of
> include().')
> TypeError: view must be a callable or a list/tuple in the case of
> include().
Those last couple of lines in this error message are instructive. I’m not
sure about the case of include() in urls.py but my url declaration indeed
is a tuple. Why is my shell telling me there is something wrong with my
tuple when it should be a tuple? I also swapped out the parentheses with
square brackets to see if it would take a list as it says it can. Either
way, same error.
Here are the contents of my urls.py:
from django.conf.urls import *
> from django.contrib import admin
> admin.autodiscover()
> urlpatterns = ['',
> # url(r'^admin/', admin.site.urls),
> url(r'^$', 'blog.views.home', name='home')
> ]
Take note of the square brackets and lack of the patterns function (as
compared to the presence of the function in the code from the teacher
below). Also commented out above is the default urlpattern that came with
Django 1.11.
So the urlpattern in Tuts+ Code’s actually looks like this:
from django.conf.urls.defaults import patterns, include, url
> from django.contrib import admin
> urlpatterns = patterns (‘’,
> url(r'^$', ‘FirstBlog.views.home’, name='home'),
> )
Addressing a related issue with importing the name pattern in urls.py for
Django, some folks over on stackoverflow describe their Djanog urls.py
<https://stackoverflow.com/questions/8074955/cannot-import-name-patterns>
configuration file use a simple variable declaration for urlpatterns and
don’t bother with the function patterns() the way the YouTuber explains
that it should look like. Like, the YouTuber uses: ‘*urlpatterns =
patterns( ... )*’ whereas the stackoverflow people set it as: ‘*urlpatterns
= [ ‘’, ...]'*.
I get the sense that I am slightly off in my understanding of the issue.
Based on what you see in the traceback, what could be going on with my
scripts?
Is there any other information I could provide?
Thanks in advance.
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