be compatible with py3

ppcls/data/reader.py

@@ -13,16 +13,15 @@
 #limitations under the License.
 
 import cv2
-
 import numpy as np
 import os
 import signal
 
 import paddle
 
-import imaug
-from imaug import transform
-from imaug import MixupOperator
+from . import imaug
+from .imaug import transform
+from .imaug import MixupOperator
 from ppcls.utils import logger
 
 trainers_num = int(os.environ.get('PADDLE_TRAINERS_NUM', 1))

ppcls/modeling/utils.py

@@ -12,10 +12,11 @@
 #See the License for the specific language governing permissions and
 #limitations under the License.
 
-import architectures
 import types
 from difflib import SequenceMatcher
 
+from . import architectures
+
 
 def get_architectures():
     """

ppcls/optimizer/__init__.py

@@ -15,5 +15,5 @@
 from . import optimizer
 from . import learning_rate
 
-from optimizer import OptimizerBuilder
-from learning_rate import LearningRateBuilder
+from .optimizer import OptimizerBuilder
+from .learning_rate import LearningRateBuilder