title: python3 manage.py runserver error
body: <p>When I try to start (python3 manage.py runserver) my django2.0 webapp on my PC I have this message:</p>
  
  <p>Performing system checks...</p>
  
  <p>Unhandled exception in thread started by .wrapper at 0x7fc889c36510>
  Traceback (most recent call last):</p>
  
  <p>File "/home/neo/.local/lib/python3.5/site-packages/django/urls/resolvers.py", line 538, in url_patterns
      iter(patterns)
  TypeError: 'module' object is not iterable</p>
  
  <p>During handling of the above exception, another exception occurred:</p>
  
  <p>Traceback (most recent call last):
    File "/home/neo/.local/lib/python3.5/site-packages/django/utils/autoreload.py", line 225, in wrapper
      fn(*args, **kwargs)</p>
  
  <p>File "/home/neo/.local/lib/python3.5/site-packages/django/core/management/commands/runserver.py", line 120, in inner_run
      self.check(display_num_errors=True)</p>
  
  <p>File "/home/neo/.local/lib/python3.5/site-packages/django/core/management/base.py", line 364, in check
      include_deployment_checks=include_deployment_checks,</p>
  
  <p>File "/home/neo/.local/lib/python3.5/site-packages/django/core/management/base.py", line 351, in _run_checks
      return checks.run_checks(**kwargs)</p>
  
  <p>File "/home/neo/.local/lib/python3.5/site-packages/django/core/checks/registry.py", line 73, in run_checks
      new_errors = check(app_configs=app_configs)</p>
  
  <p>File "/home/neo/.local/lib/python3.5/site-packages/django/core/checks/urls.py", line 13, in check_url_config
      return check_resolver(resolver)</p>
  
  <p>File "/home/neo/.local/lib/python3.5/site-packages/django/core/checks/urls.py", line 23, in check_resolver
      return check_method()</p>
  
  <p>File "/home/neo/.local/lib/python3.5/site-packages/django/urls/resolvers.py", line 398, in check
      warnings.extend(check_resolver(pattern))</p>
  
  <p>File "/home/neo/.local/lib/python3.5/site-packages/django/core/checks/urls.py", line 23, in check_resolver
      return check_method()</p>
  
  <p>File "/home/neo/.local/lib/python3.5/site-packages/django/urls/resolvers.py", line 397, in check
      for pattern in self.url_patterns:</p>
  
  <p>File "/home/neo/.local/lib/python3.5/site-packages/django/utils/functional.py", line 36, in <strong>get</strong>
      res = instance.<strong>dict</strong>[self.name] = self.func(instance)</p>
  
  <p>File "/home/neo/.local/lib/python3.5/site-packages/django/urls/resolvers.py", line 545, in url_patterns
      raise ImproperlyConfigured(msg.format(name=self.urlconf_name))
  django.core.exceptions.ImproperlyConfigured: The included URLconf '' does not appear to have any patterns in it. If you see valid patterns in the file then the issue is probably caused by a circular import.</p>
  
  <p>my app's code :</p>
  
  <p>(/django-examples/mysite):</p>
  
  <p>(Setting.py)</p>
  
  <pre><code>INSTALLED_APPS = [
  'webexample',
  'django.contrib.admin',
  'django.contrib.auth',
  'django.contrib.contenttypes',
  'django.contrib.sessions',
  'django.contrib.messages',
  'django.contrib.staticfiles',
  ]
  </code></pre>
  
  <p>(urls.py)</p>
  
  <pre><code>from django.contrib import admin
  from django.urls import include, path
  
  urlpatterns = [
  path('admin/', admin.site.urls),
  path('webexample/', include('webexample.urls')),
  ]
  </code></pre>
  
  <p>(/django-examples/mysite/webexample):</p>
  
  <p>(urls.py)</p>
  
  <pre><code>from django.urls import path
  from . import views
  
  urlpatterns = [
  path('', views.index, name='index'),
  ]
  </code></pre>
  
  <p>(views.py)</p>
  
  <pre><code>from django.shortcuts import render
  from django.http import HttpResponse
  
  def index(request):
  return HttpResponse("&lt;h3&gt;Hello, world!&lt;/h3&gt;")
  </code></pre>
  
  <p>ubuntu 16.04
  django 2.0.4
  python 3.5
  pip 8.1.1 </p>
  
  <p>What can be a reason of problem?</p>