Refine Transformer CE by following comments

fluid/neural_machine_translation/transformer/_ce.py

@@ -7,9 +7,9 @@ from kpi import CostKpi, DurationKpi, AccKpi
 
 #### NOTE kpi.py should shared in models in some way!!!!
 
-train_cost_kpi = CostKpi('train_cost', 0.02, actived=True)
-test_cost_kpi = CostKpi('test_cost', 0.005, actived=True)
-train_duration_kpi = DurationKpi('train_duration', 0.06, actived=True)
+train_cost_kpi = CostKpi('train_cost', 0.02, 0, actived=True)
+test_cost_kpi = CostKpi('test_cost', 0.005, 0, actived=True)
+train_duration_kpi = DurationKpi('train_duration', 0.06, 0, actived=True)
 
 tracking_kpis = [
     train_cost_kpi,
@@ -55,6 +55,6 @@ def log_to_ce(log):
 if __name__ == '__main__':
     log = sys.stdin.read()
     print("*****")
-    print log
+    print(log)
     print("****")
     log_to_ce(log)
\ No newline at end of file