diff --git a/nbconvert/filters/datatypefilter.py b/nbconvert/filters/datatypefilter.py
index 7025722..eb6a471 100755
--- a/nbconvert/filters/datatypefilter.py
+++ b/nbconvert/filters/datatypefilter.py
@@ -16,6 +16,7 @@ GlobalConfigurable.display_data_priority
 #-----------------------------------------------------------------------------
 # Classes and functions
 #-----------------------------------------------------------------------------
+
 class DataTypeFilter(object):
     """ Returns the preferred display format """