title: Django: python manage.py runserver (error)
body: <p>I just started using Django for a web app project and I am going through the first tutorial but when I run the python manage.py runserver from the defualt mysite directory I get the following error. </p>
  
  <p>I am using python 2.7 (64bit) on a windows 7 machine. </p>
  
  <p>How can I resolve this issue?</p>
  
  <pre><code>Unhandled exception in thread started by &lt;function wrapper at 0x00000000038AF828
  &gt;
  Traceback (most recent call last):
    File "C:\Python27\lib\site-packages\django\utils\autoreload.py", line 226, in
  wrapper
      fn(*args, **kwargs)
    File "C:\Python27\lib\site-packages\django\core\management\commands\runserver.
  py", line 109, in inner_run
      autoreload.raise_last_exception()
    File "C:\Python27\lib\site-packages\django\utils\autoreload.py", line 249, in
  raise_last_exception
      six.reraise(*_exception)
    File "C:\Python27\lib\site-packages\django\utils\autoreload.py", line 226, in
  wrapper
      fn(*args, **kwargs)
    File "C:\Python27\lib\site-packages\django\__init__.py", line 18, in setup
      apps.populate(settings.INSTALLED_APPS)
    File "C:\Python27\lib\site-packages\django\apps\registry.py", line 108, in pop
  ulate
      app_config.import_models(all_models)
    File "C:\Python27\lib\site-packages\django\apps\config.py", line 202, in impor
  t_models
      self.models_module = import_module(models_module_name)
    File "C:\Python27\lib\importlib\__init__.py", line 37, in import_module
      __import__(name)
    File "C:\Python27\lib\site-packages\django\contrib\auth\models.py", line 297,
  in &lt;module&gt;
      class AbstractUser(AbstractBaseUser, PermissionsMixin):
    File "C:\Python27\lib\site-packages\django\db\models\base.py", line 253, in __
  new__
      new_class.add_to_class(field.name, new_field)
    File "C:\Python27\lib\site-packages\django\db\models\base.py", line 307, in ad
  d_to_class
      value.contribute_to_class(cls, name)
    File "C:\Python27\lib\site-packages\django\db\models\fields\__init__.py", line
   672, in contribute_to_class
      cls._meta.add_field(self)
    File "C:\Python27\lib\site-packages\django\db\models\options.py", line 312, in
   add_field
      self.local_fields.insert(bisect(self.local_fields, field), field)
    File "C:\Python27\lib\functools.py", line 56, in &lt;lambda&gt;
      '__lt__': [('__gt__', lambda self, other: other &lt; self),
    File "C:\Python27\lib\functools.py", line 56, in &lt;lambda&gt;
      '__lt__': [('__gt__', lambda self, other: other &lt; self),
    File "C:\Python27\lib\functools.py", line 56, in &lt;lambda&gt;
      '__lt__': [('__gt__', lambda self, other: other &lt; self),
    File "C:\Python27\lib\functools.py", line 56, in &lt;lambda&gt;
      '__lt__': [('__gt__', lambda self, other: other &lt; self),
    File "C:\Python27\lib\functools.py", line 56, in &lt;lambda&gt;
  </code></pre>
  
  <p>here is the settings file:</p>
  
  <pre><code>"""
  Django settings for mysite project.
  
  Generated by 'django-admin startproject' using Django 1.9.7.
  
  For more information on this file, see
  https://docs.djangoproject.com/en/1.9/topics/settings/
  
  For the full list of settings and their values, see
  https://docs.djangoproject.com/en/1.9/ref/settings/
  """
  
  import os
  
  # Build paths inside the project like this: os.path.join(BASE_DIR, ...)
  BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
  
  
  # Quick-start development settings - unsuitable for production
  # See https://docs.djangoproject.com/en/1.9/howto/deployment/checklist/
  
  # SECURITY WARNING: keep the secret key used in production secret!
  SECRET_KEY = '123'
  
  # SECURITY WARNING: don't run with debug turned on in production!
  DEBUG = True
  
  ALLOWED_HOSTS = []
  
  
  # Application definition
  
  INSTALLED_APPS = [
      'django.contrib.admin',
      'django.contrib.auth',
      'django.contrib.contenttypes',
      'django.contrib.sessions',
      'django.contrib.messages',
      'django.contrib.staticfiles',
  ]
  
  MIDDLEWARE_CLASSES = [
      'django.middleware.security.SecurityMiddleware',
      'django.contrib.sessions.middleware.SessionMiddleware',
      'django.middleware.common.CommonMiddleware',
      'django.middleware.csrf.CsrfViewMiddleware',
      'django.contrib.auth.middleware.AuthenticationMiddleware',
      'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
      'django.contrib.messages.middleware.MessageMiddleware',
      'django.middleware.clickjacking.XFrameOptionsMiddleware',
  ]
  
  ROOT_URLCONF = 'mysite.urls'
  
  TEMPLATES = [
      {
          'BACKEND': 'django.template.backends.django.DjangoTemplates',
          'DIRS': [],
          'APP_DIRS': True,
          'OPTIONS': {
              'context_processors': [
                  'django.template.context_processors.debug',
                  'django.template.context_processors.request',
                  'django.contrib.auth.context_processors.auth',
                  'django.contrib.messages.context_processors.messages',
              ],
          },
      },
  ]
  
  WSGI_APPLICATION = 'mysite.wsgi.application'
  
  
  # Database
  # https://docs.djangoproject.com/en/1.9/ref/settings/#databases
  
  DATABASES = {
      'default': {
          'ENGINE': 'django.db.backends.sqlite3',
          'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
      }
  }
  
  
  # Password validation
  # https://docs.djangoproject.com/en/1.9/ref/settings/#auth-password-validators
  
  AUTH_PASSWORD_VALIDATORS = [
      {
          'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
      },
      {
          'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
      },
      {
          'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
      },
      {
          'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
      },
  ]
  
  
  # Internationalization
  # https://docs.djangoproject.com/en/1.9/topics/i18n/
  
  LANGUAGE_CODE = 'en-us'
  
  TIME_ZONE = 'UTC'
  
  USE_I18N = True
  
  USE_L10N = True
  
  USE_TZ = True
  
  
  # Static files (CSS, JavaScript, Images)
  # https://docs.djangoproject.com/en/1.9/howto/static-files/
  
  STATIC_URL = '/static/'
  </code></pre>