From cf2c5cba4fe9a2ff43a40c9a9e7148bee88a53bf Mon Sep 17 00:00:00 2001
From: Victor Shnayder <victor@mitx.mit.edu>
Date: Wed, 20 Jun 2012 17:20:34 -0400
Subject: [PATCH] bugfix: lcp score can apparently be 0/0

---
 common/lib/xmodule/capa_module.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/common/lib/xmodule/capa_module.py b/common/lib/xmodule/capa_module.py
index 2d21f14d1e..3566f9b5e3 100644
--- a/common/lib/xmodule/capa_module.py
+++ b/common/lib/xmodule/capa_module.py
@@ -101,7 +101,9 @@ class Module(XModule):
         d = self.get_score()
         score = d['score']
         total = d['total']
-        return Progress(score, total)
+        if total > 0:
+            return Progress(score, total)
+        return None
 
 
     def get_html(self):