makemigrations fails with too many values to unpack

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Issue Summary

Using wagtail from git I created “mysite” as in the docs, when I got as far as running makemigrations it failed with the error below

OS: Ubuntu 64 bit Python: 3.5.3

Output of pip freeze:

$ pip freeze
beautifulsoup4==4.6.0
certifi==2017.11.5
chardet==3.0.4
Django==2.0
django-modelcluster==3.1
django-taggit==0.22.1
django-treebeard==4.2.0
djangorestframework==3.7.3
html5lib==0.999999999
idna==2.6
olefile==0.44
Pillow==4.3.0
pkg-resources==0.0.0
pytz==2017.3
requests==2.18.4
six==1.11.0
Unidecode==0.4.21
urllib3==1.22
wagtail==2.0a0
webencodings==0.5.1
Willow==1.0

Error:

$ python manage.py makemigrations
Traceback (most recent call last):
  File "/mnt/data/home/stu/.virtualenvs/dit-wagtail2/lib/python3.5/site-packages/Django-2.0-py3.5.egg/django/urls/conf.py", line 17, in include
    urlconf_module, app_name = arg
ValueError: too many values to unpack (expected 2)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/mnt/data/home/stu/.virtualenvs/dit-wagtail2/lib/python3.5/site-packages/Django-2.0-py3.5.egg/django/core/management/__init__.py", line 371, in execute_from_command_line
    utility.execute()
  File "/mnt/data/home/stu/.virtualenvs/dit-wagtail2/lib/python3.5/site-packages/Django-2.0-py3.5.egg/django/core/management/__init__.py", line 365, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/mnt/data/home/stu/.virtualenvs/dit-wagtail2/lib/python3.5/site-packages/Django-2.0-py3.5.egg/django/core/management/base.py", line 288, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/mnt/data/home/stu/.virtualenvs/dit-wagtail2/lib/python3.5/site-packages/Django-2.0-py3.5.egg/django/core/management/base.py", line 332, in execute
    self.check()
  File "/mnt/data/home/stu/.virtualenvs/dit-wagtail2/lib/python3.5/site-packages/Django-2.0-py3.5.egg/django/core/management/base.py", line 364, in check
    include_deployment_checks=include_deployment_checks,
  File "/mnt/data/home/stu/.virtualenvs/dit-wagtail2/lib/python3.5/site-packages/Django-2.0-py3.5.egg/django/core/management/base.py", line 351, in _run_checks
    return checks.run_checks(**kwargs)
  File "/mnt/data/home/stu/.virtualenvs/dit-wagtail2/lib/python3.5/site-packages/Django-2.0-py3.5.egg/django/core/checks/registry.py", line 73, in run_checks
    new_errors = check(app_configs=app_configs)
  File "/mnt/data/home/stu/.virtualenvs/dit-wagtail2/lib/python3.5/site-packages/Django-2.0-py3.5.egg/django/core/checks/urls.py", line 40, in check_url_namespaces_unique
    all_namespaces = _load_all_namespaces(resolver)
  File "/mnt/data/home/stu/.virtualenvs/dit-wagtail2/lib/python3.5/site-packages/Django-2.0-py3.5.egg/django/core/checks/urls.py", line 57, in _load_all_namespaces
    url_patterns = getattr(resolver, 'url_patterns', [])
  File "/mnt/data/home/stu/.virtualenvs/dit-wagtail2/lib/python3.5/site-packages/Django-2.0-py3.5.egg/django/utils/functional.py", line 36, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "/mnt/data/home/stu/.virtualenvs/dit-wagtail2/lib/python3.5/site-packages/Django-2.0-py3.5.egg/django/urls/resolvers.py", line 536, in url_patterns
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
  File "/mnt/data/home/stu/.virtualenvs/dit-wagtail2/lib/python3.5/site-packages/Django-2.0-py3.5.egg/django/utils/functional.py", line 36, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "/mnt/data/home/stu/.virtualenvs/dit-wagtail2/lib/python3.5/site-packages/Django-2.0-py3.5.egg/django/urls/resolvers.py", line 529, in urlconf_module
    return import_module(self.urlconf_name)
  File "/mnt/data/home/stu/.virtualenvs/dit-wagtail2/lib/python3.5/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 986, in _gcd_import
  File "<frozen importlib._bootstrap>", line 969, in _find_and_load
  File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 673, in exec_module
  File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
  File "/mnt/data/home/stu/projects/work/dit/scratch/mysite/mysite/urls.py", line 12, in <module>
    url(r'^django-admin/', include(admin.site.urls)),
  File "/mnt/data/home/stu/.virtualenvs/dit-wagtail2/lib/python3.5/site-packages/Django-2.0-py3.5.egg/django/urls/conf.py", line 27, in include
    'provide the namespace argument to include() instead.' % len(arg)
django.core.exceptions.ImproperlyConfigured: Passing a 3-tuple to include() is not supported. Pass a 2-tuple containing the list of patterns and app_name, and provide the namespace argument to include() instead.

[gasman]

Thanks for the report @stuaxo! The line url(r'^django-admin/', include(admin.site.urls)), needs changing to url(r'^django-admin/', admin.site.urls),, I think.

[yumikohey]

What is the reason that I am still getting this error even I am working on a Django 2.1.1 project?