diff --git a/python/paddle/trainer/PyDataProvider2.py b/python/paddle/trainer/PyDataProvider2.py
index 033c71cf8fa996a296eca0326d10a194df473253..248da4ae8d1fb24652625ae8fc9ef314a028b912 100644
--- a/python/paddle/trainer/PyDataProvider2.py
+++ b/python/paddle/trainer/PyDataProvider2.py
@@ -87,7 +87,8 @@ class InputType(object):
 
     def __repr__(self):
         """
-        Return a human readable representation like 'InputType(dim=25921, seq_type=SequenceType.NO_SEQUENCE, type=DataType.Dense)'
+        Return a human readable representation like 'InputType(dim=25921, 
+            seq_type=SequenceType.NO_SEQUENCE, type=DataType.Dense)'
         """
         repr_str = type(self).__name__
         repr_str += '('