From 5d8332aaee77c8e598e93f67fa9061538d98b54f Mon Sep 17 00:00:00 2001
From: "Md. Sadaf Noor" <sadaf2605@gmail.com>
Date: Sun, 3 Jul 2016 12:59:47 +0600
Subject: [PATCH] [1.10.x] Fixed #26831 -- Documented session data must be JSON
 encodable for JSONSerializer.

Backport of 1f82b857ceb75f2d7a68e79c6a00c30bfe7f1318 from master
---
 docs/topics/http/sessions.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/docs/topics/http/sessions.txt b/docs/topics/http/sessions.txt
index 1e3970e9d2..7366ea2d6d 100644
--- a/docs/topics/http/sessions.txt
+++ b/docs/topics/http/sessions.txt
@@ -348,6 +348,9 @@ Bundled serializers
         >>> request.session['0']
         'bar'
 
+    Similarly, data that can't be encoded in JSON, such as non-UTF8 bytes like
+    ``'\xd9'`` (which raises :exc:`UnicodeDecodeError`), can't be stored.
+
     See the :ref:`custom-serializers` section for more details on limitations
     of JSON serialization.