From b39cb3e7e6abf05a5c0227cd3fddecefc1107b55 Mon Sep 17 00:00:00 2001
From: David Vierra <codewarrior@hawaii.rr.com>
Date: Tue, 1 Nov 2011 00:04:35 -1000
Subject: [PATCH] need to return -1 from __cmp__ to return "less than"

---
 materials.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/materials.py b/materials.py
index 2d9965c..801d3d8 100644
--- a/materials.py
+++ b/materials.py
@@ -31,7 +31,7 @@ class Block(object):
         return str(self)
     
     def __cmp__(self, other):
-        if not isinstance(other, Block): return False
+        if not isinstance(other, Block): return -1
         key = lambda a:a and (a.ID, a.blockData)
         return cmp( key(self), key(other))