Merge pull request #717 from hysunflower/0702_cube_test

fix test_client.py for py3

python/examples/criteo_ctr_with_cube/test_client.py

@@ -20,6 +20,8 @@ import criteo as criteo
 import time
 from paddle_serving_client.metric import auc
 
+py_version = sys.version_info[0]
+
 client = Client()
 client.load_client_config(sys.argv[1])
 client.connect(["127.0.0.1:9292"])
@@ -34,7 +36,10 @@ label_list = []
 prob_list = []
 start = time.time()
 for ei in range(10000):
-    data = reader().next()
+    if py_version == 2:
+        data = reader().next()
+    else:
+        data = reader().__next__()
     feed_dict = {}
     feed_dict['dense_input'] = data[0][0]
     for i in range(1, 27):