问为什么django不尝试在一个应用程序文件夹中搜索模板？

EN

LOADERS = (
            'django.template.loaders.app_directories.Loader',
    )

INSTALLED_APPS = [
    'django.contrib.contenttypes',
    'grappelli.dashboard',
    'grappelli',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.sitemaps',
    'django.contrib.staticfiles',
    'sorl.thumbnail',
    'redis',
    'hvad',
    'lazysignup',
    'ckeditor',
.....................................
    'social.apps.django_app.default',
    'django_xsession',
]


TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [
            os.path.join(BASE_DIR, 'templates'),
        ],
        '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',
                'social.apps.django_app.context_processors.backends',
                'social.apps.django_app.context_processors.login_redirect',
            ],
            'debug': DEBUG,
            'loaders': (
                'django.template.loaders.app_directories.Loader',
            ),
        },

    },
]