diff --git a/tools/marvin/marvin/cloudstackException.py b/tools/marvin/marvin/cloudstackException.py
index 17a06cc9d99..6200003bbc3 100644
--- a/tools/marvin/marvin/cloudstackException.py
+++ b/tools/marvin/marvin/cloudstackException.py
@@ -5,9 +5,9 @@
 # to you under the Apache License, Version 2.0 (the
 # "License"); you may not use this file except in compliance
 # with the License.  You may obtain a copy of the License at
-# 
+#
 #   http://www.apache.org/licenses/LICENSE-2.0
-# 
+#
 # Unless required by applicable law or agreed to in writing,
 # software distributed under the License is distributed on an
 # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
@@ -15,26 +15,34 @@
 # specific language governing permissions and limitations
 # under the License.
 
+
 class cloudstackAPIException(Exception):
-    def __init__(self, cmd = "", result = ""):
-        self.errorMsg = "Execute cmd: %s failed, due to: %s"%(cmd, result)
+    def __init__(self, cmd="", result=""):
+        self.errorMsg = "Execute cmd: %s failed, due to: %s" % (cmd, result)
+
     def __str__(self):
         return self.errorMsg
-    
+
+
 class InvalidParameterException(Exception):
     def __init__(self, msg=''):
         self.errorMsg = msg
+
     def __str__(self):
         return self.errorMsg
-    
+
+
 class dbException(Exception):
     def __init__(self, msg=''):
         self.errorMsg = msg
+
     def __str__(self):
         return self.errorMsg
-    
+
+
 class internalError(Exception):
     def __init__(self, msg=''):
         self.errorMsg = msg
+
     def __str__(self):
         return self.errorMsg