Importing settings lazily in middleware

session_security/middleware.py

@@ -24,7 +24,6 @@
     MiddlewareMixin = object
 
 from .utils import get_last_activity, set_last_activity
-from .settings import EXPIRE_AFTER, PASSIVE_URLS, PASSIVE_URL_NAMES
 
 
 class SessionSecurityMiddleware(MiddlewareMixin):
@@ -35,6 +34,8 @@ class SessionSecurityMiddleware(MiddlewareMixin):
 
     def is_passive_request(self, request):
         """ Should we skip activity update on this URL/View. """
+        from .settings import PASSIVE_URLS, PASSIVE_URL_NAMES
+
         if request.path in PASSIVE_URLS:
             return True
 
@@ -50,6 +51,7 @@ def is_passive_request(self, request):
 
     def get_expire_seconds(self, request):
         """Return time (in seconds) before the user should be logged out."""
+        from .settings import EXPIRE_AFTER
         return EXPIRE_AFTER
 
     def process_request(self, request):