diff --git a/ceilometer/api/middleware.py b/ceilometer/api/middleware.py
index 22786b61..76676613 100644
--- a/ceilometer/api/middleware.py
+++ b/ceilometer/api/middleware.py
@@ -23,8 +23,6 @@ Based on pecan.middleware.errordocument
 
 import json
 
-from webob import exc
-
 
 class ParsableErrorMiddleware(object):
     """Replace error body with something the client can parse.
diff --git a/ceilometer/energy/kwapi.py b/ceilometer/energy/kwapi.py
index 95c4da15..80390247 100644
--- a/ceilometer/energy/kwapi.py
+++ b/ceilometer/energy/kwapi.py
@@ -20,7 +20,6 @@ import requests
 
 from ceilometer import counter
 from ceilometer.central import plugin
-from ceilometer.openstack.common import cfg
 
 
 class KwapiClient(object):
diff --git a/ceilometer/pipeline.py b/ceilometer/pipeline.py
index cfce6680..d9677f32 100644
--- a/ceilometer/pipeline.py
+++ b/ceilometer/pipeline.py
@@ -21,7 +21,6 @@ import os
 from stevedore import extension
 import yaml
 
-from ceilometer import extension_manager
 from ceilometer.openstack.common import cfg
 from ceilometer.openstack.common import log
 
diff --git a/ceilometer/plugin.py b/ceilometer/plugin.py
index 3ee34b69..1513fe38 100644
--- a/ceilometer/plugin.py
+++ b/ceilometer/plugin.py
@@ -21,10 +21,9 @@
 import abc
 from collections import namedtuple
 
-from ceilometer.openstack.common import cfg
-# Import rabbit_notifier to register notification_topics flag so that
+# Import rpc_notifier to register notification_topics flag so that
 # plugins can use it
-import ceilometer.openstack.common.notifier.rabbit_notifier
+import ceilometer.openstack.common.notifier.rpc_notifier
 
 
 ExchangeTopics = namedtuple('ExchangeTopics', ['exchange', 'topics'])
diff --git a/ceilometer/storage/impl_sqlalchemy.py b/ceilometer/storage/impl_sqlalchemy.py
index cf758a8e..3ce7ca51 100644
--- a/ceilometer/storage/impl_sqlalchemy.py
+++ b/ceilometer/storage/impl_sqlalchemy.py
@@ -16,14 +16,16 @@
 """SQLAlchemy storage backend
 """
 
+from __future__ import absolute_import
+
 import copy
 import datetime
+from sqlalchemy import func
 
 from ceilometer.openstack.common import log
 from ceilometer.storage import base
 from ceilometer.storage.sqlalchemy.models import Meter, Project, Resource
 from ceilometer.storage.sqlalchemy.models import Source, User
-from ceilometer.storage.sqlalchemy.session import func
 import ceilometer.storage.sqlalchemy.session as sqlalchemy_session
 from ceilometer.storage.sqlalchemy import migration
 
diff --git a/ceilometer/storage/sqlalchemy/migrate_repo/versions/001_add_meter_table.py b/ceilometer/storage/sqlalchemy/migrate_repo/versions/001_add_meter_table.py
index f5d02fb8..1dfdbcae 100644
--- a/ceilometer/storage/sqlalchemy/migrate_repo/versions/001_add_meter_table.py
+++ b/ceilometer/storage/sqlalchemy/migrate_repo/versions/001_add_meter_table.py
@@ -15,7 +15,6 @@
 # under the License.
 
 from sqlalchemy import *
-from ceilometer.openstack.common import timeutils
 
 meta = MetaData()
 
diff --git a/ceilometer/storage/sqlalchemy/migrate_repo/versions/003_set_utf8_charset.py b/ceilometer/storage/sqlalchemy/migrate_repo/versions/003_set_utf8_charset.py
index 347ef51f..14a9fee3 100644
--- a/ceilometer/storage/sqlalchemy/migrate_repo/versions/003_set_utf8_charset.py
+++ b/ceilometer/storage/sqlalchemy/migrate_repo/versions/003_set_utf8_charset.py
@@ -14,8 +14,6 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from sqlalchemy import MetaData
-
 
 def upgrade(migrate_engine):
 
diff --git a/ceilometer/storage/sqlalchemy/models.py b/ceilometer/storage/sqlalchemy/models.py
index c6eba7e7..930e7069 100644
--- a/ceilometer/storage/sqlalchemy/models.py
+++ b/ceilometer/storage/sqlalchemy/models.py
@@ -22,7 +22,7 @@ import json
 from sqlalchemy import Column, Integer, String, Table
 from sqlalchemy.ext.declarative import declarative_base
 from sqlalchemy import ForeignKey, DateTime
-from sqlalchemy.orm import relationship, backref
+from sqlalchemy.orm import relationship
 from sqlalchemy.types import TypeDecorator, VARCHAR
 from urlparse import urlparse
 
diff --git a/ceilometer/storage/sqlalchemy/session.py b/ceilometer/storage/sqlalchemy/session.py
index ad955367..8742f359 100644
--- a/ceilometer/storage/sqlalchemy/session.py
+++ b/ceilometer/storage/sqlalchemy/session.py
@@ -22,7 +22,6 @@ import re
 import time
 
 import sqlalchemy
-from sqlalchemy import func
 from sqlalchemy.exc import DisconnectionError, OperationalError
 import sqlalchemy.orm
 from sqlalchemy.pool import NullPool, StaticPool
diff --git a/ceilometer/tests/api.py b/ceilometer/tests/api.py
index 20dd832a..3c240a7f 100644
--- a/ceilometer/tests/api.py
+++ b/ceilometer/tests/api.py
@@ -26,13 +26,9 @@ import flask
 from pecan import set_config
 from pecan.testing import load_test_app
 
-import mox
-import stubout
-
 from ceilometer import storage
 from ceilometer.api.v1 import app as v1_app
 from ceilometer.api.v1 import blueprint as v1_blueprint
-from ceilometer.api.controllers import v2
 from ceilometer.openstack.common import cfg
 from ceilometer.tests import db as db_test_base
 from ceilometer.tests import base
diff --git a/ceilometer/tests/skip.py b/ceilometer/tests/skip.py
index da58b6c5..7985dc05 100644
--- a/ceilometer/tests/skip.py
+++ b/ceilometer/tests/skip.py
@@ -24,7 +24,6 @@ inline callbacks.
 """
 
 import functools
-import unittest
 
 import nose.plugins.skip
 
diff --git a/tests/api/v1/test_list_sources.py b/tests/api/v1/test_list_sources.py
index 49d15a08..399f7e45 100644
--- a/tests/api/v1/test_list_sources.py
+++ b/tests/api/v1/test_list_sources.py
@@ -18,12 +18,6 @@
 """Test listing users.
 """
 
-import datetime
-import logging
-
-from ceilometer.collector import meter
-from ceilometer import counter
-
 from ceilometer.tests import api as tests_api
 
 
diff --git a/tests/central/test_manager.py b/tests/central/test_manager.py
index c8f05918..3767f7c0 100644
--- a/tests/central/test_manager.py
+++ b/tests/central/test_manager.py
@@ -24,7 +24,6 @@ from stevedore import extension
 
 from ceilometer.central import manager
 from ceilometer import counter
-from ceilometer import pipeline
 from ceilometer.tests import base
 
 from ceilometer.openstack.common import cfg
diff --git a/tests/collector/test_manager.py b/tests/collector/test_manager.py
index 9d5ddda6..89b3ffeb 100644
--- a/tests/collector/test_manager.py
+++ b/tests/collector/test_manager.py
@@ -29,7 +29,6 @@ from stevedore.tests import manager as test_manager
 from ceilometer.collector import meter
 from ceilometer.collector import service
 from ceilometer.openstack.common import cfg
-from ceilometer import pipeline
 from ceilometer.storage import base
 from ceilometer.tests import base as tests_base
 from ceilometer.compute import notifications
diff --git a/tests/compute/test_manager.py b/tests/compute/test_manager.py
index 86118f21..2fc15b62 100644
--- a/tests/compute/test_manager.py
+++ b/tests/compute/test_manager.py
@@ -25,7 +25,6 @@ from stevedore import extension
 from ceilometer import nova_client
 from ceilometer.compute import manager
 from ceilometer import counter
-from ceilometer import pipeline
 from ceilometer.tests import base
 
 from ceilometer.openstack.common import cfg
diff --git a/tests/compute/test_pollsters.py b/tests/compute/test_pollsters.py
index 3cc114cf..65b64a3c 100644
--- a/tests/compute/test_pollsters.py
+++ b/tests/compute/test_pollsters.py
@@ -28,8 +28,6 @@ from ceilometer.compute import manager
 from ceilometer.compute.virt import inspector as virt_inspector
 from ceilometer.tests import base as test_base
 
-import mox
-
 
 class TestPollsterBase(test_base.TestCase):
 
diff --git a/tests/compute/virt/libvirt/test_inspector.py b/tests/compute/virt/libvirt/test_inspector.py
index 1be2ad02..853cc29f 100644
--- a/tests/compute/virt/libvirt/test_inspector.py
+++ b/tests/compute/virt/libvirt/test_inspector.py
@@ -19,13 +19,9 @@
 """Tests for libvirt inspector.
 """
 
-import time
-
 from ceilometer.compute.virt.libvirt import inspector as libvirt_inspector
 from ceilometer.tests import base as test_base
 
-import mox
-
 
 class TestLibvirtInspection(test_base.TestCase):
 
diff --git a/tests/image/test_notifications.py b/tests/image/test_notifications.py
index e4ae8f11..0aba1aab 100644
--- a/tests/image/test_notifications.py
+++ b/tests/image/test_notifications.py
@@ -22,22 +22,26 @@ import unittest
 
 from ceilometer.image import notifications
 from ceilometer import counter
-from tests import utils
+
+
+def fake_uuid(x):
+    return '%s-%s-%s-%s' % (x * 8, x * 4, x * 4, x * 12)
+
 
 NOW = datetime.isoformat(datetime.utcnow())
 
 NOTIFICATION_SEND = {
     u'event_type': u'image.send',
     u'timestamp': NOW,
-    u'message_id': utils.fake_uuid('a'),
+    u'message_id': fake_uuid('a'),
     u'priority': u'INFO',
     u'publisher_id': u'images.example.com',
-    u'payload': {u'receiver_tenant_id': utils.fake_uuid('b'),
+    u'payload': {u'receiver_tenant_id': fake_uuid('b'),
                  u'destination_ip': u'1.2.3.4',
                  u'bytes_sent': 42,
-                 u'image_id': utils.fake_uuid('c'),
-                 u'receiver_user_id': utils.fake_uuid('d'),
-                 u'owner_id': utils.fake_uuid('e')}
+                 u'image_id': fake_uuid('c'),
+                 u'receiver_user_id': fake_uuid('d'),
+                 u'owner_id': fake_uuid('e')}
 }
 
 IMAGE_META = {u'status': u'saving',
@@ -51,7 +55,7 @@ IMAGE_META = {u'status': u'saving',
                               u'key1': u'value1'},
               u'min_disk': 0,
               u'protected': False,
-              u'id': utils.fake_uuid('c'),
+              u'id': fake_uuid('c'),
               u'location': None,
               u'checksum': u'd990432ef91afef3ad9dbf4a975d3365',
               u'owner': "fake",
@@ -90,7 +94,7 @@ class TestNotification(unittest.TestCase):
     def _verify_common_counter(self, c, name, volume):
         self.assertFalse(c is None)
         self.assertEqual(c.name, name)
-        self.assertEqual(c.resource_id, utils.fake_uuid('c'))
+        self.assertEqual(c.resource_id, fake_uuid('c'))
         self.assertEqual(c.timestamp, NOW)
         self.assertEqual(c.volume, volume)
         metadata = c.resource_metadata
@@ -102,8 +106,8 @@ class TestNotification(unittest.TestCase):
         self.assertEqual(len(counters), 1)
         download = counters[0]
         self._verify_common_counter(download, 'image.download', 42)
-        self.assertEqual(download.user_id, utils.fake_uuid('d'))
-        self.assertEqual(download.project_id, utils.fake_uuid('b'))
+        self.assertEqual(download.user_id, fake_uuid('d'))
+        self.assertEqual(download.project_id, fake_uuid('b'))
         self.assertEqual(download.type, counter.TYPE_DELTA)
 
     def test_image_serve(self):
@@ -112,11 +116,11 @@ class TestNotification(unittest.TestCase):
         self.assertEqual(len(counters), 1)
         serve = counters[0]
         self._verify_common_counter(serve, 'image.serve', 42)
-        self.assertEqual(serve.project_id, utils.fake_uuid('e'))
+        self.assertEqual(serve.project_id, fake_uuid('e'))
         self.assertEquals(serve.resource_metadata.get('receiver_user_id'),
-                          utils.fake_uuid('d'))
+                          fake_uuid('d'))
         self.assertEquals(serve.resource_metadata.get('receiver_tenant_id'),
-                          utils.fake_uuid('b'))
+                          fake_uuid('b'))
         self.assertEqual(serve.type, counter.TYPE_DELTA)
 
     def test_image_crud_on_update(self):
diff --git a/tests/objectstore/test_swift_middleware.py b/tests/objectstore/test_swift_middleware.py
index a018e2e2..439a9fbb 100644
--- a/tests/objectstore/test_swift_middleware.py
+++ b/tests/objectstore/test_swift_middleware.py
@@ -22,7 +22,6 @@ from webob import Request
 
 from ceilometer.tests import base
 from ceilometer.objectstore import swift_middleware
-from ceilometer.openstack.common import rpc
 from ceilometer import pipeline
 
 
diff --git a/tests/storage/base.py b/tests/storage/base.py
index ad5bff2c..11f8893d 100644
--- a/tests/storage/base.py
+++ b/tests/storage/base.py
@@ -33,9 +33,6 @@ from ceilometer.tests import base as test_base
 class DBEngineBase(object):
     __metaclass__ = abc.ABCMeta
 
-    def __init__(self):
-        super(DBEngineBase, self).__init__()
-
     @abc.abstractmethod
     def get_connection(self):
         """Return an open connection to the DB
@@ -75,7 +72,6 @@ class DBTestBase(test_base.TestCase):
         '''Return an instance of the class which implements
            the DBEngineTestBase abstract class
         '''
-        return None
 
     def __setup_engine(self):
         if self.engine is None:
diff --git a/tests/storage/test_impl_mongodb.py b/tests/storage/test_impl_mongodb.py
index c6300a7a..8b9b3438 100644
--- a/tests/storage/test_impl_mongodb.py
+++ b/tests/storage/test_impl_mongodb.py
@@ -46,11 +46,9 @@
 
 """
 
-
 import mox
 
 from tests.storage import base
-from ceilometer import storage
 from ceilometer.tests.db import TestConnection, require_map_reduce
 
 
diff --git a/tests/storage/test_impl_sqlalchemy.py b/tests/storage/test_impl_sqlalchemy.py
index ab1e5ba9..595e3f89 100644
--- a/tests/storage/test_impl_sqlalchemy.py
+++ b/tests/storage/test_impl_sqlalchemy.py
@@ -19,13 +19,11 @@
 import logging
 import os
 import sqlalchemy
-import re
 
 from tests.storage import base
 from ceilometer.openstack.common import cfg
-from ceilometer import storage
 from ceilometer.storage import impl_sqlalchemy
-from ceilometer.storage.sqlalchemy.models import Meter, Project, Resource, User
+from ceilometer.storage.sqlalchemy.models import Project, User
 from ceilometer.storage.sqlalchemy.models import table_args
 
 
diff --git a/tests/test_pipeline.py b/tests/test_pipeline.py
index 10bb1eef..e3fe5995 100644
--- a/tests/test_pipeline.py
+++ b/tests/test_pipeline.py
@@ -16,13 +16,10 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import copy
-
 from stevedore import dispatch
 from stevedore import extension
 
 from ceilometer import counter
-from ceilometer import extension_manager as act_extension
 from ceilometer.openstack.common import timeutils
 from ceilometer import pipeline
 from ceilometer.tests import base
diff --git a/tests/utils.py b/tests/utils.py
deleted file mode 100644
index f019f14d..00000000
--- a/tests/utils.py
+++ /dev/null
@@ -1,21 +0,0 @@
-# -*- encoding: utf-8 -*-
-#
-# Copyright © 2012 Red Hat Inc.
-#
-# Author: Eoghan Glynn <eglynn@redhat.com>
-#
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-
-
-def fake_uuid(x):
-    return '%s-%s-%s-%s' % (x * 8, x * 4, x * 4, x * 12)