From aa3a4125199fda11d5f15358a12a26cb93aef637 Mon Sep 17 00:00:00 2001
From: Andreas Kloeckner <inform@tiker.net>
Date: Thu, 27 Nov 2014 12:52:33 -0600
Subject: [PATCH] Flake8 style fix

---
 loopy/codegen/expression.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/loopy/codegen/expression.py b/loopy/codegen/expression.py
index 87ebf2384..1963c2995 100644
--- a/loopy/codegen/expression.py
+++ b/loopy/codegen/expression.py
@@ -84,7 +84,7 @@ class TypeInferenceMapper(CombineMapper):
                 # assume the non-native type takes over
                 pass
             else:
-                if not result is other:
+                if result is not other:
                     raise TypeInferenceFailure(
                             "nothing known about result of operation on "
                             "'%s' and '%s'" % (result, other))
-- 
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