diff --git a/attachment_swift/tests/test_with_swift_store.py b/attachment_swift/tests/test_with_swift_store.py
index 61c44fd..a4a9202 100644
--- a/attachment_swift/tests/test_with_swift_store.py
+++ b/attachment_swift/tests/test_with_swift_store.py
@@ -20,7 +20,7 @@ class TestAttachmentSwift(TestIrAttachment):
     def test_connection(self):
         """ Test the connection to the Swift object store """
         conn = self.Attachment._get_swift_connection()
-        self.assertNotEquals(conn, False)
+        self.assertNotEqual(conn, False)
 
     def test_store_file_on_swift(self):
         """ Test writing a file and then reading it """
@@ -28,7 +28,7 @@ class TestAttachmentSwift(TestIrAttachment):
             set_param('ir_attachment.location', 'swift'))
         a5 = self.Attachment.create({'name': 'a5', 'datas': self.blob1_b64})
         a5bis = self.Attachment.browse(a5.id)[0]
-        self.assertEquals(a5.datas, a5bis.datas)
+        self.assertEqual(a5.datas, a5bis.datas)
 
     def test_delete_file_on_swift(self):
         """ Create a file and then test the deletion """
diff --git a/monitoring_statsd/statsd_client.py b/monitoring_statsd/statsd_client.py
index c705cb8..2ce7baa 100644
--- a/monitoring_statsd/statsd_client.py
+++ b/monitoring_statsd/statsd_client.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-from __future__ import absolute_import
+
 
 import logging
 import os
diff --git a/session_redis/session.py b/session_redis/session.py
index 8d69b27..c8cab99 100644
--- a/session_redis/session.py
+++ b/session_redis/session.py
@@ -25,14 +25,14 @@ class RedisSessionStore(SessionStore):
             self.expiration = DEFAULT_SESSION_TIMEOUT
         else:
             self.expiration = expiration
-        self.prefix = u'session:'
+        self.prefix = 'session:'
         if prefix:
-            self.prefix = u'%s:%s:' % (
+            self.prefix = '%s:%s:' % (
                 self.prefix, prefix
             )
 
     def build_key(self, sid):
-        if isinstance(sid, unicode):
+        if isinstance(sid, str):
             sid = sid.encode('utf-8')
         return '%s%s' % (self.prefix, sid)