fix server for python3

python/paddle_serving_server/__init__.py

@@ -584,7 +584,7 @@ class MultiLangServerServiceServicer(multi_lang_general_model_service_pb2_grpc.
                     else:
                         raise Exception("error type.")
                 tensor.shape.extend(list(model_result[name].shape))
-                if model_result.has_key("{}.lod".format(name)):
+                if "{}.lod".format(name) in model_result:
                     tensor.lod.extend(model_result["{}.lod".format(name)]
                                       .tolist())
                 inst.tensor_array.append(tensor)

python/paddle_serving_server_gpu/__init__.py

@@ -655,7 +655,7 @@ class MultiLangServerServiceServicer(multi_lang_general_model_service_pb2_grpc.
                     else:
                         raise Exception("error type.")
                 tensor.shape.extend(list(model_result[name].shape))
-                if model_result.has_key("{}.lod".format(name)):
+                if "{}.lod".format(name) in model_result:
                     tensor.lod.extend(model_result["{}.lod".format(name)]
                                       .tolist())
                 inst.tensor_array.append(tensor)