diff --git a/core/predictor/common/CMakeLists.txt b/core/predictor/common/CMakeLists.txt
index c8dc75758a3036e1cd8c9477bbd3d377da61cad2..7beb2317f2b6e84c1424b8ae84de7ea8851e92dc 100644
--- a/core/predictor/common/CMakeLists.txt
+++ b/core/predictor/common/CMakeLists.txt
@@ -1,3 +1,2 @@
 FILE(GLOB common_srcs ${CMAKE_CURRENT_LIST_DIR}/constant.cpp)
 LIST(APPEND pdserving_srcs ${common_srcs})
-
diff --git a/python/examples/criteo_ctr_with_cube/test_client.py b/python/examples/criteo_ctr_with_cube/test_client.py
index fbe434559ebef5f3910696ccdf4b72e89efbc48d..b2a162c40bdec5dbf6e3a49ae45e881d9b96254d 100755
--- a/python/examples/criteo_ctr_with_cube/test_client.py
+++ b/python/examples/criteo_ctr_with_cube/test_client.py
@@ -28,11 +28,8 @@ batch = 1
 buf_size = 100
 dataset = criteo.CriteoDataset()
 dataset.setup(1000001)
-test_filelists = [
-    "{}/part-test".format(sys.argv[2])
-]
-reader = dataset.infer_reader(test_filelists, batch,
-                              buf_size)
+test_filelists = ["{}/part-test".format(sys.argv[2])]
+reader = dataset.infer_reader(test_filelists, batch, buf_size)
 label_list = []
 prob_list = []
 start = time.time()