From 14728045a244495bef016e627952b4399256c8f6 Mon Sep 17 00:00:00 2001
From: Andreas Kloeckner <inform@tiker.net>
Date: Tue, 26 Jun 2018 22:59:02 -0500
Subject: [PATCH] Make type part of init_arg_names/pickle state assert message

---
 pymbolic/primitives.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pymbolic/primitives.py b/pymbolic/primitives.py
index 95ea4c1..d18c1c6 100644
--- a/pymbolic/primitives.py
+++ b/pymbolic/primitives.py
@@ -521,7 +521,7 @@ class Expression(object):
 
     def __setstate__(self, state):
         # Can't use trivial pickling: hash_value cache must stay unset
-        assert len(self.init_arg_names) == len(state)
+        assert len(self.init_arg_names) == len(state), type(self)
         for name, value in zip(self.init_arg_names, state):
             setattr(self, name, value)
 
-- 
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