fix import bug for vision utils

paddlehub/vision/utils.py

@@ -11,15 +11,17 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-
 import os
-from typing import Callable, Union, List, Tuple
+from typing import Callable
+from typing import List
+from typing import Tuple
+from typing import Union
 
 import cv2
-import paddle
-import PIL
 import numpy as np
+import paddle
 import paddle.nn.functional as F
+import PIL.Image
 from scipy.sparse import csr_matrix
 
 
@@ -129,8 +131,7 @@ def draw_boxes_on_image(image_path: str,
         x1, y1, x2, y2 = box[0], box[1], box[2], box[3]
         rect = plt.Rectangle((x1, y1), x2 - x1, y2 - y1, fill=False, linewidth=2.0, edgecolor=colors[label])
         ax.add_patch(rect)
-        ax.text(
-            x1,
+        ax.text(x1,
                 y1,
                 '{} {:.4f}'.format(label_names[label], score),
                 verticalalignment='bottom',