From 560444b6855c3439812b6b482ef9956d014e74f3 Mon Sep 17 00:00:00 2001
From: Anthon van der Neut <anthon@mnt.org>
Date: Wed, 7 Jun 2017 10:25:29 +0200
Subject: error/warning on duplicate mapping keys

---
 nodes.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'nodes.py')

diff --git a/nodes.py b/nodes.py
index 75cefb6..96f3190 100644
--- a/nodes.py
+++ b/nodes.py
@@ -97,5 +97,5 @@ class SequenceNode(CollectionNode):
 
 
 class MappingNode(CollectionNode):
-    __slots__ = ()
+    __slots__ = ('merge', )
     id = 'mapping'
-- 
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