diff --git a/swh/loader/pypi/client.py b/swh/loader/pypi/client.py
--- a/swh/loader/pypi/client.py
+++ b/swh/loader/pypi/client.py
@@ -3,19 +3,19 @@
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
-import arrow
 import logging
 import os
-import requests
 import shutil
 
-from .converters import info, author
-
+import arrow
 from pkginfo import UnpackedSDist
+import requests
 
 from swh.core import tarball
 from swh.model import hashutil
 
+from .converters import info, author
+
 try:
     from swh.loader.pypi._version import __version__
 except ImportError:
diff --git a/swh/loader/pypi/loader.py b/swh/loader/pypi/loader.py
--- a/swh/loader/pypi/loader.py
+++ b/swh/loader/pypi/loader.py
@@ -3,12 +3,12 @@
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
-import arrow
 import os
 import shutil
-
 from tempfile import mkdtemp
 
+import arrow
+
 from swh.loader.core.utils import clean_dangling_folders
 from swh.loader.core.loader import SWHLoader
 from swh.model.from_disk import Directory