From 81f96c4ceb1934f317901bea98012bb8926839c6 Mon Sep 17 00:00:00 2001
From: Gary Donovan <gary.donovan@rockmelon.co>
Date: Wed, 17 Oct 2018 11:08:44 +1100
Subject: [PATCH] Don't compare a dict_keys object to a list, since it is
 always False

---
 moto/dynamodb2/models.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/moto/dynamodb2/models.py b/moto/dynamodb2/models.py
index 63ad20df6..a54c4f7d0 100644
--- a/moto/dynamodb2/models.py
+++ b/moto/dynamodb2/models.py
@@ -265,9 +265,9 @@ class Item(BaseModel):
                     self.attrs[attribute_name] = DynamoType({"SS": new_value})
                 elif isinstance(new_value, dict):
                     self.attrs[attribute_name] = DynamoType({"M": new_value})
-                elif update_action['Value'].keys() == ['N']:
+                elif set(update_action['Value'].keys()) == set(['N']):
                     self.attrs[attribute_name] = DynamoType({"N": new_value})
-                elif update_action['Value'].keys() == ['NULL']:
+                elif set(update_action['Value'].keys()) == set(['NULL']):
                     if attribute_name in self.attrs:
                         del self.attrs[attribute_name]
                 else: