From 250391ae5385586a651bfecaefc81e122ea62fab Mon Sep 17 00:00:00 2001
From: Dominic Kempf <dominic.kempf@iwr.uni-heidelberg.de>
Date: Thu, 13 Apr 2017 16:49:30 +0200
Subject: [PATCH] Make slots a tuple instead of a list

---
 python/dune/perftool/ufl/execution.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/python/dune/perftool/ufl/execution.py b/python/dune/perftool/ufl/execution.py
index 9e857d97..ddb5e90c 100644
--- a/python/dune/perftool/ufl/execution.py
+++ b/python/dune/perftool/ufl/execution.py
@@ -140,7 +140,7 @@ def split_expression(expr):
 
 class FiniteElement(ufl.FiniteElement):
 
-    __slots = ufl.FiniteElement.__slots__ + ["dirichlet_expression", "dirichlet_constraints"]
+    __slots = ufl.FiniteElement.__slots__ + ("dirichlet_expression", "dirichlet_constraints")
 
     def __new__(cls, *args, **kwargs):
         kwargs.pop('dirichlet_constraints', None)
-- 
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