diff --git a/juju/client/jujudata.py b/juju/client/jujudata.py
index ce9f5ae9..67976e60 100644
--- a/juju/client/jujudata.py
+++ b/juju/client/jujudata.py
@@ -15,6 +15,7 @@
 
 API_ENDPOINTS_KEY = 'api-endpoints'
 
+
 class NoModelException(Exception):
     pass
 
diff --git a/juju/errors.py b/juju/errors.py
index 08831a6e..2232420c 100644
--- a/juju/errors.py
+++ b/juju/errors.py
@@ -89,9 +89,11 @@ class JujuUnitError(JujuError):
 class JujuBackupError(JujuError):
     pass
 
+
 class PylibjujuProgrammingError(Exception):
     pass
 
+
 class JujuNotValid(JujuError):
     def __init__(self, entity_type, entity_name):
         self.entity_type = entity_type