diff --git a/data_utils/data.py b/data_utils/data.py
index 1beba14319a69c306c53ee6f7c8054841711f106..1e524b0f1ceba9231eb59f984eb09d8f028737d0 100644
--- a/data_utils/data.py
+++ b/data_utils/data.py
@@ -89,7 +89,6 @@ class DataGenerator(object):
         self._num_threads = num_threads
         self._rng = random.Random(random_seed)
         self._epoch = 0
-
         # for caching tar files info
         self.tar2info = {}
         self.tar2object = {}