diff --git a/python/paddle/v2/framework/op.py b/python/paddle/v2/framework/op.py
index a3dbd0cc8939489e864769b0fef40d129ba78800..81c8c3fed844614fbb22dccca685fa84c0683dba 100644
--- a/python/paddle/v2/framework/op.py
+++ b/python/paddle/v2/framework/op.py
@@ -145,6 +145,16 @@ class OpDescCreationMethod(object):
         return False
 
 
+class OpInfo(object):
+    def __init__(self, name, method, inputs, outputs, attrs, no_temp_outputs):
+        self.name = name
+        self.method = method
+        self.inputs = inputs
+        self.outputs = outputs
+        self.attrs = attrs
+        self.no_temp_outputs = no_temp_outputs
+
+
 def create_op_creation_method(op_proto):
     """
     Generate op creation method for an OpProto
@@ -155,15 +165,15 @@ def create_op_creation_method(op_proto):
         opdesc = method(*args, **kwargs)
         return core.Operator.create(opdesc.SerializeToString())
 
-    return {
-        'method': __impl__,
-        'name': op_proto.type,
-        'all_inputs': [var.name for var in op_proto.inputs],
-        'all_outputs': [var.name for var in op_proto.outputs],
-        'all_attrs': [attr.name for attr in op_proto.attrs],
-        'all_no_temp_outputs':
-        [var.name for var in op_proto.outputs if not var.temporary]
-    }
+    return OpInfo(
+        method=__impl__,
+        name=op_proto.type,
+        inputs=[var.name for var in op_proto.inputs],
+        outputs=[var.name for var in op_proto.outputs],
+        attrs=[attr.name for attr in op_proto.attrs],
+        no_temp_outputs=[
+            var.name for var in op_proto.outputs if not var.temporary
+        ])
 
 
 class OperatorFactory(object):
@@ -185,27 +195,27 @@ class OperatorFactory(object):
                                  "argument except type")
             t = args[0]
 
-        return self.get_op_creation_info(t)['method'](**kwargs)
+        return self.get_op_info(t).method(**kwargs)
 
     def types(self):
         return self.op_methods.keys()
 
-    def get_op_creation_info(self, t):
+    def get_op_info(self, t):
         if t not in self.op_methods:
             raise ValueError("operator %s is not registered", t)
         return self.op_methods.get(t)
 
     def get_op_input_names(self, type):
-        return self.get_op_creation_info(type)['all_inputs']
+        return self.get_op_info(type).inputs
 
     def get_op_output_names(self, type):
-        return self.get_op_creation_info(type)['all_outputs']
+        return self.get_op_info(type).outputs
 
     def get_op_attr_names(self, type):
-        return self.get_op_creation_info(type)['all_attrs']
+        return self.get_op_info(type).attrs
 
     def get_op_no_temp_output_names(self, type):
-        return self.get_op_creation_info(type)['all_no_temp_outputs']
+        return self.get_op_info(type).no_temp_outputs
 
 
 Operator = OperatorFactory()  # Default global factory
diff --git a/python/paddle/v2/framework/tests/CMakeLists.txt b/python/paddle/v2/framework/tests/CMakeLists.txt
index 2c648d22f35a1492b0a6848825888e41075b30d4..d01e005aca6d411e31d19d0f0cf5f4db097ec15b 100644
--- a/python/paddle/v2/framework/tests/CMakeLists.txt
+++ b/python/paddle/v2/framework/tests/CMakeLists.txt
@@ -20,4 +20,4 @@ py_test(gradient_checker SRCS gradient_checker.py)
 py_test(test_rowwise_add_op SRCS test_rowwise_add_op.py)
 
 py_test(test_default_scope_funcs SRCS test_default_scope_funcs.py)
-py_test(test_operator SRCS test_operator.py
+py_test(test_operator SRCS test_operator.py)