PythonAnyWhere Le paramètre SECRET_KEY ne doit pas être vide

Question

Je souhaite donc déployer mon site Web sur pythonanywhere. J'ai créé virtualenv, installé Django et toutes les applications dont j'ai besoin pour mon site web. J'ai créé une nouvelle application et l'ai connectée à mon projet que j'ai cloné depuis GitHub. Voici une capture d'écran du réglage dans mon application web:

Ma structure de projet ressemble à ceci:

Mon settings.py

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/1.10/howto/deployment/checklist/ 

# SECURITY WARNING: keep the secret key used in production secret! 
SECRET_KEY = os.environ.get('SECRET_KEY') 

# SECURITY WARNING: don't run with debug turned on in production! 
DEBUG = False 
ADMIN_ENABLED = False 

ALLOWED_HOSTS = [] 


# Application definition 

INSTALLED_APPS = [ 
    'django.contrib.admin', 
    'django.contrib.auth', 
    'django.contrib.contenttypes', 
    'django.contrib.sessions', 
    'django.contrib.messages', 
    'django.contrib.staticfiles', 
    'django.contrib.sites', 
    'allauth', 
    'allauth.account', 
    'allauth.socialaccount', 
    'taggit', 
    'blog', 
    'widget_tweaks', 
    'ckeditor', 
    'ckeditor_uploader', 
    'user_account', 
    'captcha', 
    'mptt', 
] 

SITE_ID = 1 

MIDDLEWARE = [ 
    'django.middleware.security.SecurityMiddleware', 
    'django.contrib.sessions.middleware.SessionMiddleware', 
    'django.middleware.common.CommonMiddleware', 
    'django.middleware.csrf.CsrfViewMiddleware', 
    'django.contrib.auth.middleware.AuthenticationMiddleware', 
    'django.contrib.messages.middleware.MessageMiddleware', 
    'django.middleware.clickjacking.XFrameOptionsMiddleware', 
] 

ROOT_URLCONF = 'blog_project.urls' 

TEMPLATES = [ 
    { 
     'BACKEND': 'django.template.backends.django.DjangoTemplates', 
     'DIRS': [os.path.join(BASE_DIR, 'templates')], 
     '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 = 'blog_project.wsgi.application' 


# Database 
# https://docs.djangoproject.com/en/1.10/ref/settings/#databases 

""" 
# Use this for testing on local pc 
DATABASES = { 
    'default': { 
     'ENGINE': 'django.db.backends.sqlite3', 
     'NAME': os.path.join(BASE_DIR, 'db.sqlite3'), 
    } 
} 
""" 

#Use this for Deployment 
DATABASES = { 
    'default': { 
     'ENGINE': 'django.db.backends.mysql', 
     'NAME': 'falca94$blogezzdatabase', 
     'USER': 'falca94', 
     'PASSWORD': os.environ.get('DATABASE_PASS'), 
     'HOST': 'falca94.mysql.pythonanywhere-services.com', 
    } 
} 
# Password validation 
# https://docs.djangoproject.com/en/1.10/ref/settings/#auth-password-validators 

AUTH_PASSWORD_VALIDATORS = [ 
    { 
     'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator', 
    }, 
    { 
     'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator', 
     'OPTIONS': { 
      'min_length': 5, 
     }, 
    }, 
    { 
     'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator', 
    }, 
    { 
     'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator', 
    }, 
] 

# Django-allauth 
AUTHENTICATION_BACKENDS = (
    # Needed to login by username in Django admin, regardless of `allauth` 
    'django.contrib.auth.backends.ModelBackend', 

    # `allauth` specific authentication methods, such as login by e-mail 
    'allauth.account.auth_backends.AuthenticationBackend', 
) 


# Internationalization 
# https://docs.djangoproject.com/en/1.10/topics/i18n/ 

LANGUAGE_CODE = 'en-us' 

TIME_ZONE = 'Europe/Belgrade' 

USE_I18N = True 

USE_L10N = True 

USE_TZ = True 


# Static files (CSS, JavaScript, Images) 
# https://docs.djangoproject.com/en/1.10/howto/static-files/ 

STATIC_URL = '/static/' 

STATICFILES_DIRS = [ 
    os.path.join(BASE_DIR, 'static'), 
    #'/var/www/static/', 
] 

STATIC_ROOT = os.path.join(os.path.dirname(BASE_DIR), 'static_cdn') 

MEDIA_URL = '/media/' 
MEDIA_ROOT = os.path.join(os.path.dirname(BASE_DIR), 'media_cdn') 

#slanje maila 
EMAIL_USE_TLS = True 
EMAIL_HOST = 'smtp.gmail.com' 
EMAIL_HOST_USER = 'blogezz.master@gmail.com' 
EMAIL_HOST_PASSWORD = os.environ.get('EMAIL_PASS') 
EMAIL_PORT = 587 
EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend' 

# Custom allauth settings 
# Use email as the primary identifier 
ACCOUNT_AUTHENTICATION_METHOD = 'email' 
ACCOUNT_EMAIL_REQUIRED = True 
# Make email verification mandatory to avoid junk email accounts 
ACCOUNT_EMAIL_VERIFICATION = 'mandatory' 
# Eliminate need to provide username, as it's a very old practice 
ACCOUNT_USERNAME_REQUIRED = False 
# Redirect user after logout 
ACCOUNT_LOGOUT_REDIRECT_URL = "/accounts/login" 
# Our personal signup form 
ACCOUNT_SIGNUP_FORM_CLASS = 'user_account.forms.SignupForm' 

ACCOUNT_ADAPTER = 'user_account.adapter.AccountAdapter' 

# To not show the logout page after the user logs out, set ACCOUNT_LOGOUT_ON_GET = True 
ACCOUNT_LOGOUT_ON_GET = False 

# Configuration for DJANGO-CKEDITOR 
CKEDITOR_UPLOAD_PATH = "uploads/" 
CKEDITOR_RESTRICT_BY_USER = True 
CKEDITOR_BROWSE_SHOW_DIRS = True 
CKEDITOR_RESTRICT_BY_DATE = True 
CKEDITOR_JQUERY_URL = '//ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js' 

CKEDITOR_CONFIGS = { 
    'default': { 
     'skin': 'moono', 
     'height': 800, 
    }, 
} 

Et mon /var/www/falca94_pythonanywhere_com_wsgi.py

# +++++++++++ DJANGO +++++++++++ 
# To use your own django app use code like this: 
import os 
import sys 
# 
## assuming your django settings file is at '/home/falca94/mysite/mysite/settings.py' 
## and your manage.py is is at '/home/falca94/mysite/manage.py' 
path = '/home/falca94/blog_project' 
if path not in sys.path: 
    sys.path.append(path) 

os.environ['DJANGO_SETTINGS_MODULE'] = 'blog_project.settings' 
os.environ['SECRET_KEY'] = 'mysecretkey' 
os.environ['EMAIL_PASS'] = 'emailpassword' 
os.environ['DATABASE_PASS'] = 'databasepass' 

# then, for django >=1.5: 
from django.core.wsgi import get_wsgi_application 
from django.contrib.staticfiles.handlers import StaticFilesHandler 
application = StaticFilesHandler(get_wsgi_application()) 
## or, for older django <=1.4 
#import django.core.handlers.wsgi 
#application = django.core.handlers.wsgi.WSGIHandler() 

Je ne comprends pas pourquoi je reçois cette erreur:

Error running WSGI application 
2017-05-05 11:33:43,246 :django.core.exceptions.ImproperlyConfigured: The SECRET_KEY setting must not be empty. 
2017-05-05 11:33:43,246 : File "/var/www/falca94_pythonanywhere_com_wsgi.py", line 12, in <module> 
2017-05-05 11:33:43,247 : application = StaticFilesHandler(get_wsgi_application()) 
2017-05-05 11:33:43,247 : 
2017-05-05 11:33:43,247 : File "/home/falca94/blog_project/blog_project_env/lib/python3.6/site-packages/django/core/wsgi.py", line 13, in get_wsgi_application 
2017-05-05 11:33:43,247 : django.setup(set_prefix=False) 
2017-05-05 11:33:43,247 : 
2017-05-05 11:33:43,247 : File "/home/falca94/blog_project/blog_project_env/lib/python3.6/site-packages/django/__init__.py", line 22, in setup 
2017-05-05 11:33:43,247 : configure_logging(settings.LOGGING_CONFIG, settings.LOGGING) 
2017-05-05 11:33:43,247 : 
2017-05-05 11:33:43,248 : File "/home/falca94/blog_project/blog_project_env/lib/python3.6/site-packages/django/conf/__init__.py", line 56, in __getattr__ 
2017-05-05 11:33:43,248 : self._setup(name) 
2017-05-05 11:33:43,248 : 
2017-05-05 11:33:43,248 : File "/home/falca94/blog_project/blog_project_env/lib/python3.6/site-packages/django/conf/__init__.py", line 41, in _setup 
2017-05-05 11:33:43,248 : self._wrapped = Settings(settings_module) 
2017-05-05 11:33:43,248 : 
2017-05-05 11:33:43,248 : File "/home/falca94/blog_project/blog_project_env/lib/python3.6/site-packages/django/conf/__init__.py", line 129, in __init__ 
2017-05-05 11:33:43,248 : raise ImproperlyConfigured("The SECRET_KEY setting must not be empty.") 

Answer 1

Votre settings.py essaie de lire le SECRET_KEY d'une variable d'environnement:

SECRET_KEY = os.environ.get('SECRET_KEY') 

L'erreur est indiquant que cet environnement variable n'est pas définie dans l'environnement dans lequel vous essayez d'exécuter votre application Django.

Dans le cas de Python partout où vous pouvez lire sur ce cas précis dans la documentation: https://help.pythonanywhere.com/pages/environment-variables-for-web-apps