tutorial python manage.py runserver creates NameError: name 'include' is not defined

[Roel Hogervorst]

Hi there, I tried the tutorial / introduction to django and get stuck. I have installed django, verified that it is working :

python 3.5.2:4def2a2901a5 on win32, and django 1.10.3 on mingw32 on a windows 10 machine. 

I did not install a virtual environment.

django-admin startproject mysite worked

I cd into the mysite directory (the top one, that is, the one below , cd mysite )

The next step does not work though:
python manage.py runserver gives me this output

Performing system checks...

Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x03FB28A0>
Traceback (most recent call last):
  File "C:\Users\roel\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\utils\autoreload.py", line 226, in wrapper
    fn(*args, **kwargs)
  File "C:\Users\roel\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\management\commands\runserver.py", line 121, in inner_run
    self.check(display_num_errors=True)
  File "C:\Users\roel\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\management\base.py", line 374, in check
    include_deployment_checks=include_deployment_checks,
  File "C:\Users\roel\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\management\base.py", line 361, in _run_checks
    return checks.run_checks(**kwargs)
  File "C:\Users\roel\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\checks\registry.py", line 81, in run_checks
    new_errors = check(app_configs=app_configs)
  File "C:\Users\roel\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\checks\urls.py", line 14, in check_url_config
    return check_resolver(resolver)
  File "C:\Users\roel\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\checks\urls.py", line 24, in check_resolver
    for pattern in resolver.url_patterns:
  File "C:\Users\roel\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\utils\functional.py", line 35, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "C:\Users\roel\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\urls\resolvers.py", line 313, in url_patterns
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
  File "C:\Users\roel\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\utils\functional.py", line 35, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "C:\Users\roel\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\urls\resolvers.py", line 306, in urlconf_module
    return import_module(self.urlconf_name)
  File "C:\Users\roel\AppData\Local\Programs\Python\Python35-32\lib\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 665, in exec_module
  File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
  File "D:\RmhDocs\Documents\docs\actief\Projecten\django\mysite\mysite\urls.py", line 20, in <module>
    url(r'^polls/', include('polls.urls')),
NameError: name 'include' is not defined

[Tim Graham]

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