python manage.py運行服務器

Question

我正在嘗試學習django.I嘗試通過運行來啟動服務器

python manage.py runserver

但我得到以下錯誤

Django version 1.6.2, using settings 'coding.settings'
Starting development server at //127.0.0.1:8000/
Quit the server with CTRL-BREAK.
Traceback (most recent call last):
  File "C:\Python27\lib\wsgiref\handlers.py", line 85, in run
    self.result = application(self.environ, self.start_response)
  File "C:\Python27\lib\site-packages\django\contrib\staticfiles\handlers.py", l
ine 67, in __call__
    return self.application(environ, start_response)
  File "C:\Python27\lib\site-packages\django\core\handlers\wsgi.py", line 187, i
n __call__
    self.load_middleware()
  File "C:\Python27\lib\site-packages\django\core\handlers\base.py", line 47, in
 load_middleware
   mw_class = import_by_path(middleware_path)
  File "C:\Python27\lib\site-packages\django\utils\module_loading.py", line 19,
in import_by_patherror_prefix, dotted_path))
ImproperlyConfigured: d doesn't look like a module path

請幫助我刪除此錯誤。

Answer 1

在settings.py

Iv'e使用django的配置玩-將AUTHENTICATION_BACKENDS從2個后端更改為一個

在進行小型調試會話后，iv'e找到了解決方案

替換此表示形式：

AUTHENTICATION_BACKENDS = ('django.contrib.auth.backends.ModelBackend')

要么

AUTHENTICATION_BACKENDS = 'django.contrib.auth.backends.ModelBackend'

與此：

AUTHENTICATION_BACKENDS = ['django.contrib.auth.backends.ModelBackend']

Answer 2

顯然您的配置不正確：

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'
)

這些中間件模塊路徑之間應該有逗號：

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',
)

沒有逗號，Python中的（ 'firstsecondthird' ('first' 'second' 'third')是連接的字符串值'firstsecondthird' 。

當Django處理MIDDLEWARE_CLASSES設置時，它將遍歷其元素以加載模塊。 如果用逗號分隔模塊路徑，則MIDDLEWARE_CLASSES是一個元組，並且Django會正確加載每個模塊。 如果省略所有逗號，則MIDDLEWARE_CLASSES是一個字符串，因此迭代該值將迭代該字符串的字母。 第一個字母是d ，因此Django嘗試加載路徑d ，該路徑當然“看起來不像模塊路徑”。