--- a/devtools/__init__.py	Tue Dec 22 15:35:10 2015 +0100
+++ b/devtools/__init__.py	Fri Dec 18 09:36:58 2015 +0100
@@ -30,9 +30,9 @@
 import warnings
 import tempfile
 import getpass
-from hashlib import sha1 # pylint: disable=E0611
+from hashlib import sha1  # pylint: disable=E0611
 from datetime import timedelta
-from os.path import (abspath, realpath, join, exists, split, isabs, isdir)
+from os.path import abspath, join, exists, split, isabs, isdir
 from functools import partial
 
 from six import text_type

--- a/server/sqlutils.py	Tue Dec 22 15:35:10 2015 +0100
+++ b/server/sqlutils.py	Fri Dec 18 09:36:58 2015 +0100
@@ -48,6 +48,7 @@
 lgc.USE_MX_DATETIME = False
 SQL_PREFIX = 'cw_'
 
+
 def _run_command(cmd):
     if isinstance(cmd, string_types):
         print(cmd)
@@ -96,7 +97,7 @@
         try:
             # some dbapi modules doesn't accept unicode for sql string
             execute(str(sql))
-        except Exception as err:
+        except Exception:
             if cnx:
                 cnx.rollback()
             failed.append(sql)

--- a/server/test/unittest_querier.py	Tue Dec 22 15:35:10 2015 +0100
+++ b/server/test/unittest_querier.py	Fri Dec 18 09:36:58 2015 +0100
@@ -24,8 +24,9 @@
 import pytz
 
 from six import PY2, integer_types, binary_type, text_type
+
 from logilab.common.testlib import TestCase, unittest_main
-from rql import BadRQLQuery, RQLSyntaxError
+from rql import BadRQLQuery
 
 from cubicweb import QueryError, Unauthorized, Binary
 from cubicweb.server.sqlutils import SQL_PREFIX
@@ -35,6 +36,7 @@
 from cubicweb.devtools.testlib import CubicWebTC
 from cubicweb.devtools.repotest import tuplify, BaseQuerierTC
 
+
 class FixedOffset(tzinfo):
     def __init__(self, hours=0):
         self.hours = hours

--- a/web/views/forms.py	Tue Dec 22 15:35:10 2015 +0100
+++ b/web/views/forms.py	Fri Dec 18 09:36:58 2015 +0100
@@ -45,8 +45,6 @@
 __docformat__ = "restructuredtext en"
 
 
-from warnings import warn
-
 import time
 import inspect
 
@@ -55,13 +53,11 @@
 from logilab.common import dictattr, tempattr
 from logilab.common.decorators import iclassmethod, cached
 from logilab.common.textutils import splitstrip
-from logilab.common.deprecation import deprecated
 
 from cubicweb import ValidationError, neg_role
-from cubicweb.utils import support_args
 from cubicweb.predicates import non_final_entity, match_kwargs, one_line_rset
 from cubicweb.web import RequestError, ProcessFormError
-from cubicweb.web import form, formwidgets as fwdgs
+from cubicweb.web import form
 from cubicweb.web.views import uicfg
 from cubicweb.web.formfields import guess_field
 

--- a/web/views/sessions.py	Tue Dec 22 15:35:10 2015 +0100
+++ b/web/views/sessions.py	Fri Dec 18 09:36:58 2015 +0100
@@ -1,4 +1,4 @@
-# copyright 2003-2014 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+# copyright 2003-2015 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
 # contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
 #
 # This file is part of CubicWeb.
@@ -21,10 +21,9 @@
 from time import time
 from logging import getLogger
 
-from logilab.common.registry import RegistrableObject
+from logilab.common.registry import RegistrableObject, yes
 
-from cubicweb import RepositoryError, Unauthorized, BadConnectionId, set_log_methods
-from cubicweb.predicates import yes
+from cubicweb import RepositoryError, Unauthorized, set_log_methods
 from cubicweb.web import InvalidSession
 
 from cubicweb.web.views import authentication