From afb44a1aaed8549e138cb15e39792071e68ca1e7 Mon Sep 17 00:00:00 2001
From: Andreas Kloeckner <inform@tiker.net>
Date: Thu, 20 Nov 2008 22:03:29 -0500
Subject: [PATCH] Fix Expression.get_hash() and improve its diagnostics.

---
 src/primitives.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/primitives.py b/src/primitives.py
index 2caec17..d8361b4 100644
--- a/src/primitives.py
+++ b/src/primitives.py
@@ -167,8 +167,8 @@ class Expression(object):
     def is_equal(self, other):
         return NotImplemented
 
-    def get_hash(self, other):
-        raise NotImplementedError
+    def get_hash(self):
+        raise NotImplementedError("get_hash() in "+str(type(self)))
 
 
 
-- 
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