Merge pull request #178 from jthure/issue#155 closes #155

Python2 code in toolbox.msp, issue#155

charm/toolbox/msp.py

@@ -25,9 +25,9 @@ def createPolicy(self, policy_string):
          Convert a Boolean formula represented as a string into a policy represented like a tree.
         """
 
-        assert type(policy_string) in [str, unicode], "invalid type for policy_string"
-        if(type(policy_string) == str):
-            policy_string = unicode(policy_string)
+        assert type(policy_string) in [bytes, str], "invalid type for policy_string"
+        if type(policy_string) == bytes:
+            policy_string = policy_string.decode('utf-8')
         parser = PolicyParser()
         policy_obj = parser.parse(policy_string)
         _dictCount, _dictLabel = {}, {}