fix import order for train.py
@@ -17,13 +17,14 @@ from __future__ import unicode_literals
from distutils.version import LooseVersion
import logging
import math
-import numpy as np
import os
-from six.moves import xrange
-import tensorflow as tf
import time
import warnings
+import numpy as np
+from six.moves import xrange
+import tensorflow as tf
+
from cleverhans.utils import batch_indices, _ArgsWrapper, create_logger
from cleverhans.utils import safe_zip
from cleverhans.utils_tf import infer_devices
