Update test.py (PaddlePaddle#2408)

fix load bug

Author: DDDivano

dygraph/cycle_gan/test.py

@@ -38,7 +38,7 @@ def test():
             os.makedirs(out_path)
         cycle_gan = Cycle_Gan("cycle_gan")
         save_dir = args.init_model + str(epoch)
-        restore = fluid.dygraph.load_persistables(save_dir)
+        restore, _ = fluid.dygraph.load_persistables(save_dir)
         cycle_gan.load_dict(restore)
         cycle_gan.eval()
         for data_A , data_B in zip(A_test_reader(), B_test_reader()): 
@@ -74,4 +74,4 @@ def test():
 if __name__ == "__main__":
     args = parser.parse_args()
     print_arguments(args)
-    test()
+    test()