Update data_loader.py

data/data_loader.py

@@ -1,6 +1,4 @@
 import os
-import numpy as np
-import pandas as pd
 
 import mindspore.dataset as ds
 import mindspore.dataset.transforms.c_transforms as C
@@ -12,6 +10,9 @@ from mindspore import Tensor
 from utils.tools import StandardScaler
 from utils.timefeatures import time_features
 
+import numpy as np
+import pandas as pd
+
 import warnings
 warnings.filterwarnings('ignore')