From: Tomas Gavenciak <gavento@ucw.cz>
Date: Wed, 22 Sep 2010 21:25:14 +0000 (+0200)
Subject: Fixed ConfigVar.variables in case of no operations
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=6da41bdca7744c83e39e9e013fa422d4985aaa90;p=moe.git

Fixed ConfigVar.variables in case of no operations
---

diff --git a/t/moe/config.py b/t/moe/config.py
index d0d4e93..b2f788e 100644
--- a/t/moe/config.py
+++ b/t/moe/config.py
@@ -268,6 +268,8 @@ class ConfigVar(ConfigElem):
 
   def variables(self):
     "Return a set of variables used in the expressions"
+    if not self.operations:
+      return set([])
     return set.union(*[ op.expression.variables() for op in self.operations ])
 
   def fix(self):