From c02d4dc3873b5e8c07b0522185e2799a42eac709 Mon Sep 17 00:00:00 2001
From: 0x155 <stroppos.yiangos@gmail.com>
Date: Wed, 20 Dec 2017 21:29:46 +0100
Subject: [PATCH] Init new attribute implementation

---
 flask/sessions.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/flask/sessions.py b/flask/sessions.py
index 82b588bc..7e82fda0 100644
--- a/flask/sessions.py
+++ b/flask/sessions.py
@@ -61,21 +61,30 @@ class SecureCookieSession(CallbackDict, SessionMixin):
         def on_update(self):
             self.modified = True
             self.accessed = True
+            self.new = True
 
         super(SecureCookieSession, self).__init__(initial, on_update)
         self.modified = False
         self.accessed = False
+        if not hasattr(self, 'has_run'):
+            self.has_run = True
+            self.new = False
+        else:
+            self.new = True
 
     def __getitem__(self, key):
         self.accessed = True
+        self.new = False
         return super(SecureCookieSession, self).__getitem__(key)
 
     def get(self, key, default=None):
         self.accessed = True
+        self.new = False
         return super(SecureCookieSession, self).get(key, default)
 
     def setdefault(self, key, default=None):
         self.accessed = True
+        self.new = False
         return super(SecureCookieSession, self).setdefault(key, default)