diff --git a/tests/test_file.py b/tests/test_file.py
index f413dac98e0ba7eb49f2039a328523c0802684fa..2bf3eb0e02686e5a646fccae57802686273cc26f 100644
--- a/tests/test_file.py
+++ b/tests/test_file.py
@@ -26,16 +26,18 @@
 @author: Timm Fitschen
 """
 import os
-
 import shutil
-from lxml import etree
-from sys import maxsize as maxint
 from random import randint
+from sys import maxsize as maxint
+
+from caosdb import execute_query, get_config, get_connection
 from caosdb.common import models
 from caosdb.exceptions import EntityError
-from caosdb import execute_query, get_config, get_connection
 from caosdb.utils.checkFileSystemConsistency import runCheck
-from nose.tools import assert_is_not_none, assert_true, assert_false, assert_equals, assert_raises, with_setup, nottest  # @UnresolvedImport
+from lxml import etree
+from nose.tools import (assert_equals, assert_false,  # @UnresolvedImport
+                        assert_is_not_none, assert_raises, assert_true,
+                        nottest, with_setup)
 
 
 def setup_module():
@@ -237,6 +239,7 @@ def test_file6():
         d = models.DropOffBox()
         d.sync()
         path = d.path + "/testfolder"
+
         if not os.path.isdir(d.path):
             print("drop off box not on this system.")
         else:
@@ -293,6 +296,7 @@ def test_file7():
         d = models.DropOffBox()
         d.sync()
         path = d.path + "/testfolder"
+
         if not os.path.isdir(d.path):
             print("drop off box not on this system.")
         else: