From ce3450ba77e8da8e2872a68f789043ad1ae55c6b Mon Sep 17 00:00:00 2001
From: Dominic Kempf <dominic.kempf@iwr.uni-heidelberg.de>
Date: Fri, 28 Jul 2017 14:54:32 +0200
Subject: [PATCH] Keep jacobian_inames as a tuple

The old Python2 vs. Python3 problem: non-deterministic hash produces the best bugs!!!
---
 python/dune/perftool/sumfact/symbolic.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/python/dune/perftool/sumfact/symbolic.py b/python/dune/perftool/sumfact/symbolic.py
index 08448735..288374da 100644
--- a/python/dune/perftool/sumfact/symbolic.py
+++ b/python/dune/perftool/sumfact/symbolic.py
@@ -184,10 +184,10 @@ class SumfactKernel(SumfactKernelBase, ImmutableRecord, prim.Variable):
     @property
     def within_inames(self):
         if self.trial_element is None:
-            return frozenset()
+            return ()
         else:
             from dune.perftool.sumfact.basis import lfs_inames
-            return frozenset(lfs_inames(self.trial_element, self.restriction))
+            return lfs_inames(self.trial_element, self.restriction)
 
     def vec_index(self, sf):
         """ Map an unvectorized sumfact kernel object to its position
-- 
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