need to return -1 from __cmp__ to return "less than"

2011-11-01 00:04:35 -10:00 · 2011-11-01 00:04:35 -10:00 · b39cb3e7e6
commit b39cb3e7e6
parent 464ecd818b
1 changed files with 1 additions and 1 deletions
--- 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))