ImportError: no hay un módulo llamado django.sessions

Estoy tratando de ejecutar un proyecto

pero da el siguiente error

Traceback (most recent call last): File "/usr/lib/python2.7/wsgiref/handlers.py", line 85, in run self.result = application(self.environ, self.start_response) File "/usr/local/lib/python2.7/dist-packages/django/contrib/staticfiles/handlers.py", line 63, in __call__ return self.application(environ, start_response) File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/wsgi.py", line 170, in __call__ self.load_middleware() File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py", line 52, in load_middleware mw_instance = mw_class() File "/usr/local/lib/python2.7/dist-packages/django/contrib/sessions/middleware.py", line 11, in __init__ engine = import_module(settings.SESSION_ENGINE) File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module __import__(name) ImportError: No module named django.sessions [08/Sep/2015 02:37:00] "GET / HTTP/1.1" 500 59 

y el archivo setting.py es:

 from mongoengine import connect connect("authentication_demo") DEBUG = True TEMPLATE_DEBUG = DEBUG ADMINS = ( # ('Your Name', 'your_email@example.com'), ) MANAGERS = ADMINS import os HERE = os.path.dirname( os.path.abspath(__file__) ) # This needs to be changed as the site is moved around HOSTNAME='llovett.cs.oberlin.edu:8050' # Message storage backend MESSAGE_STORAGE = 'django.contrib.messages.storage.session.SessionStorage' # Local time zone for this installation. Choices can be found here: # http://en.wikipedia.org/wiki/List_of_tz_zones_by_name # although not all choices may be available on all operating systems. # In a Windows environment this must be set to your system time zone. TIME_ZONE = 'America/Chicago' # Language code for this installation. All choices can be found here: # http://www.i18nguy.com/unicode/language-identifiers.html LANGUAGE_CODE = 'en-us' SITE_ID = 1 # If you set this to False, Django will make some optimizations so as not # to load the internationalization machinery. USE_I18N = True # If you set this to False, Django will not format dates, numbers and # calendars according to the current locale. USE_L10N = True # If you set this to False, Django will not use timezone-aware datetimes. USE_TZ = True # Absolute filesystem path to the directory that will hold user-uploaded files. # Example: "/home/media/media.lawrence.com/media/" MEDIA_ROOT = HERE + '/media/' # URL that handles the media served from MEDIA_ROOT. Make sure to use a # trailing slash. # Examples: "http://media.lawrence.com/media/", "http://example.com/media/" MEDIA_URL = '/media/' # Absolute path to the directory static files should be collected to. # Don't put anything in this directory yourself; store your static files # in apps' "static/" subdirectories and in STATICFILES_DIRS. # Example: "/home/media/media.lawrence.com/static/" STATIC_ROOT = HERE + '/static/' # URL prefix for static files. # Example: "http://media.lawrence.com/static/" STATIC_URL = '/static/' # Additional locations of static files STATICFILES_DIRS = ( # Put strings here, like "/home/html/static" or "C:/www/django/static". # Always use forward slashes, even on Windows. # Don't forget to use absolute paths, not relative paths. ) # List of finder classes that know how to find static files in # various locations. STATICFILES_FINDERS = ( 'django.contrib.staticfiles.finders.FileSystemFinder', 'django.contrib.staticfiles.finders.AppDirectoriesFinder', # 'django.contrib.staticfiles.finders.DefaultStorageFinder', ) # Make this unique, and don't share it with anybody. SECRET_KEY = '#%djb@u^n&(wxr=t46*tgeby%qs1jz(wgi^wc#!6=q!m_--%br' # List of callables that know how to import templates from various sources. TEMPLATE_LOADERS = ( 'django.template.loaders.filesystem.Loader', 'django.template.loaders.app_directories.Loader', # 'django.template.loaders.eggs.Loader', ) MIDDLEWARE_CLASSES = ( 'django.middleware.common.CommonMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', # Uncomment the next line for simple clickjacking protection: # 'django.middleware.clickjacking.XFrameOptionsMiddleware', ) AUTHENTICATION_BACKENDS = ( 'mongoengine.django.auth.MongoEngineBackend', ) SESSION_ENGINE = 'mongoengine.django.sessions' ROOT_URLCONF = 'authentication.urls' # Python dotted path to the WSGI application used by Django's runserver. WSGI_APPLICATION = 'authentication.wsgi.application' #TEMPLATE_DIRS = ( TEMPLATE_PATH = HERE + '/templates/' # Put strings here, like "/home/html/django_templates" or "C:/www/django/templates". # Always use forward slashes, even on Windows. # Don't forget to use absolute paths, not relative paths. #) TEMPLATES = [ { 'BACKEND': 'django.template.backends.django.DjangoTemplates', 'DIRS': [TEMPLATE_PATH], 'APP_DIRS': True, 'OPTIONS': { 'context_processors': [ 'django.contrib.auth.context_processors.auth', 'django.contrib.messages.context_processors.messages', ], }, }, ] #TEMPLATE_CONTEXT_PROCESSORS = ( # 'django.contrib.auth.context_processors.auth', # 'django.contrib.messages.context_processors.messages', #) INSTALLED_APPS = ( 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.sites', 'django.contrib.messages', 'django.contrib.staticfiles', 'gauth', # Uncomment the next line to enable the admin: # 'django.contrib.admin', # Uncomment the next line to enable admin documentation: # 'django.contrib.admindocs', ) # A sample logging configuration. The only tangible logging # performed by this configuration is to send an email to # the site admins on every HTTP 500 error when DEBUG=False. # See http://docs.djangoproject.com/en/dev/topics/logging for # more details on how to customize your logging configuration. LOGGING = { 'version': 1, 'disable_existing_loggers': False, 'filters': { 'require_debug_false': { '()': 'django.utils.log.RequireDebugFalse' } }, 'handlers': { 'mail_admins': { 'level': 'ERROR', 'filters': ['require_debug_false'], 'class': 'django.utils.log.AdminEmailHandler' } }, 'loggers': { 'django.request': { 'handlers': ['mail_admins'], 'level': 'ERROR', 'propagate': True, }, } } 

El mongoengine es bastante antiguo y parece que no implementa el módulo de sesiones requerido por Django> 1.7. Puede resolver este problema dejando que el motor predeterminado de sqlite3 maneje la parte de sesión de su base de datos:

 #SESSION_ENGINE = 'mongoengine.django.sessions' # optional DATABASES = { 'default': { 'ENGINE': 'django.db.backends.sqlite3', 'NAME': os.path.join(PROJECT_DIR, 'db.sqlite3'), } } 

Eliminar / comentar la anulación de SESSION_ENGINE