diff --git a/spug_expand/settings.py b/spug_expand/settings.py
index 1dc6264..babd4f1 100644
--- a/spug_expand/settings.py
+++ b/spug_expand/settings.py
@@ -15,7 +15,6 @@ 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/2.2/howto/deployment/checklist/
 
@@ -27,7 +26,6 @@ DEBUG = True
 
 ALLOWED_HOSTS = ['*']
 
-
 # Application definition
 
 INSTALLED_APPS = [
@@ -44,7 +42,7 @@ INSTALLED_APPS = [
 MIDDLEWARE = [
     'django.middleware.security.SecurityMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',
-    'corsheaders.middleware.CorsMiddleware'
+    'corsheaders.middleware.CorsMiddleware',
     'django.middleware.common.CommonMiddleware',
     'django.middleware.csrf.CsrfViewMiddleware',
     'django.contrib.auth.middleware.AuthenticationMiddleware',
@@ -71,7 +69,6 @@ TEMPLATES = [
 
 WSGI_APPLICATION = 'spug_expand.wsgi.application'
 
-
 # Database
 # https://docs.djangoproject.com/en/2.2/ref/settings/#databases
 
@@ -87,7 +84,6 @@ DATABASES = {
     }
 }
 
-
 # Password validation
 # https://docs.djangoproject.com/en/2.2/ref/settings/#auth-password-validators
 
@@ -106,7 +102,6 @@ AUTH_PASSWORD_VALIDATORS = [
     },
 ]
 
-
 # Internationalization
 # https://docs.djangoproject.com/en/2.2/topics/i18n/
 
@@ -120,7 +115,6 @@ USE_L10N = True
 
 USE_TZ = True
 
-
 # Static files (CSS, JavaScript, Images)
 # https://docs.djangoproject.com/en/2.2/howto/static-files/
 
@@ -161,4 +155,4 @@ CORS_ALLOW_HEADERS = (
 CORS_ALLOW_CREDENTIALS = True
 # 允许所有主机执行跨站点请求，默认为False
 # 如果没设置该参数，则必须设置白名单，运行部分白名单的主机才能执行跨站点请求
-CORS_ORIGIN_ALLOW_ALL = True
\ No newline at end of file
+CORS_ORIGIN_ALLOW_ALL = True