diff --git a/MindSpore/src/step3/step3_test.py b/MindSpore/src/step3/step3_test.py
new file mode 100644
index 0000000..9ec69e2
--- /dev/null
+++ b/MindSpore/src/step3/step3_test.py
@@ -0,0 +1,27 @@
+import train_net
+import object
+
+if __name__ == '__main__':
+
+    # add objects for searching
+    objs = [
+
+
+        "ds_train=create_dataset(os.path.join(mnist_path,",
+        "model.train(epoch_size,ds_train,callbacks=[ckpoint_cb,LossMonitor()],dataset_sink_mode=False)",
+        "config_ck=CheckpointConfig(save_checkpoint_steps=1875,keep_checkpoint_max=10)",
+        "ckpoint_cb=ModelCheckpoint(prefix="
+
+
+    ]
+
+    filepath = "./MindSpore/src/step3/train_net.py"
+
+    if (object.objectFind(objs, filepath)):
+        print("----------------")
+
+        print("ok!")
+    else:
+        print("object error!")
+
+