From 4a51ba228b2c416a115aee3bc034683eb02482c3 Mon Sep 17 00:00:00 2001
From: Illia Volochii <illia.volochii@gmail.com>
Date: Tue, 27 Dec 2016 16:42:17 +0200
Subject: Fixed #27642 -- Made forms.utils.flatatt() omit 'None' values from
 attrs.

---
 django/forms/utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'django/forms')

diff --git a/django/forms/utils.py b/django/forms/utils.py
index dc4df86058..88086b2c64 100644
--- a/django/forms/utils.py
+++ b/django/forms/utils.py
@@ -40,7 +40,7 @@ def flatatt(attrs):
         if isinstance(value, bool):
             if value:
                 boolean_attrs.append((attr,))
-        else:
+        elif value is not None:
             key_value_attrs.append((attr, value))
 
     return (
-- 
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