code fix

fluid/face_detection/data_util.py

 """
 This code is based on https://github.com/fchollet/keras/blob/master/keras/utils/data_utils.py
 """
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
 
 import time
 import numpy as np

fluid/face_detection/image_util.py

+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 from PIL import Image, ImageEnhance, ImageDraw
 from PIL import ImageFile
 import numpy as np

fluid/face_detection/profile.py

+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import os
 import shutil
 import numpy as np

fluid/face_detection/pyramidbox.py

+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import numpy as np
 import six
 import paddle.fluid as fluid

fluid/face_detection/reader.py

@@ -12,6 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import image_util
 from paddle.utils.image_util import *
 import random

fluid/face_detection/train.py

+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import os
 import shutil
 import numpy as np

fluid/face_detection/visualize.py

+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import os
 from PIL import Image
 from PIL import ImageDraw

fluid/face_detection/widerface_eval.py

+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
 import os
 import time
 import numpy as np