diff --git a/devstack/component.py b/devstack/component.py
index ff1b893d..bbc9d152 100644
--- a/devstack/component.py
+++ b/devstack/component.py
@@ -15,7 +15,6 @@
 #    under the License.
 
 from devstack import downloader as down
-from devstack import exceptions as excp
 from devstack import log as logging
 from devstack import pip
 from devstack import settings
diff --git a/devstack/components/glance.py b/devstack/components/glance.py
index 11a8ba07..926be802 100644
--- a/devstack/components/glance.py
+++ b/devstack/components/glance.py
@@ -22,7 +22,6 @@ from devstack import component as comp
 from devstack import log as logging
 from devstack import settings
 from devstack import shell as sh
-from devstack import utils
 
 from devstack.components import db
 from devstack.components import keystone
diff --git a/devstack/components/keystone_client.py b/devstack/components/keystone_client.py
index ce2e543b..c7d76413 100644
--- a/devstack/components/keystone_client.py
+++ b/devstack/components/keystone_client.py
@@ -17,8 +17,6 @@
 from devstack import component as comp
 from devstack import log as logging
 from devstack import settings
-from devstack import shell as sh
-from devstack import utils
 
 #id
 TYPE = settings.KEYSTONE_CLIENT
diff --git a/devstack/components/melange_client.py b/devstack/components/melange_client.py
index 9fc4b74b..ff94d5f1 100644
--- a/devstack/components/melange_client.py
+++ b/devstack/components/melange_client.py
@@ -17,8 +17,6 @@
 from devstack import component as comp
 from devstack import log as logging
 from devstack import settings
-from devstack import shell as sh
-from devstack import utils
 
 #id
 TYPE = settings.MELANGE_CLIENT
diff --git a/devstack/components/nova_client.py b/devstack/components/nova_client.py
index d7fb1f9f..a0706836 100644
--- a/devstack/components/nova_client.py
+++ b/devstack/components/nova_client.py
@@ -17,8 +17,6 @@
 from devstack import component as comp
 from devstack import log as logging
 from devstack import settings
-from devstack import shell as sh
-from devstack import utils
 
 #id
 TYPE = settings.NOVA_CLIENT
diff --git a/devstack/components/quantum_client.py b/devstack/components/quantum_client.py
index 56f3bfe0..b3988539 100644
--- a/devstack/components/quantum_client.py
+++ b/devstack/components/quantum_client.py
@@ -17,8 +17,6 @@
 from devstack import component as comp
 from devstack import log as logging
 from devstack import settings
-from devstack import shell as sh
-from devstack import utils
 
 #id
 TYPE = settings.QUANTUM_CLIENT
diff --git a/devstack/components/rabbit.py b/devstack/components/rabbit.py
index b6441d12..aaf3fa80 100644
--- a/devstack/components/rabbit.py
+++ b/devstack/components/rabbit.py
@@ -18,12 +18,10 @@ from tempfile import TemporaryFile
 import time
 
 from devstack import component as comp
-from devstack import exceptions as excp
 from devstack import log as logging
 from devstack import settings
 from devstack import shell as sh
 from devstack import trace as tr
-from devstack import utils
 
 #id
 TYPE = settings.RABBIT
diff --git a/devstack/components/swift_keystone.py b/devstack/components/swift_keystone.py
index 90819af7..643a459b 100644
--- a/devstack/components/swift_keystone.py
+++ b/devstack/components/swift_keystone.py
@@ -14,14 +14,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import os
-import os.path
-
 from devstack import component as comp
 from devstack import log as logging
 from devstack import settings
-from devstack import shell as sh
-from devstack import utils
 
 # id
 TYPE = settings.SWIFT_KEYSTONE
diff --git a/devstack/opts.py b/devstack/opts.py
index b6a5b9b5..f5b4eefb 100644
--- a/devstack/opts.py
+++ b/devstack/opts.py
@@ -17,7 +17,6 @@
 from optparse import IndentedHelpFormatter
 from optparse import OptionParser, OptionGroup
 
-from devstack import shell as sh
 from devstack import log as logging
 from devstack import settings
 from devstack import version
diff --git a/devstack/packaging/yum.py b/devstack/packaging/yum.py
index 2ce09178..9429900b 100644
--- a/devstack/packaging/yum.py
+++ b/devstack/packaging/yum.py
@@ -14,7 +14,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from devstack import exceptions as excp
 from devstack import log as logging
 from devstack import packager as pack
 from devstack import settings
diff --git a/devstack/pip.py b/devstack/pip.py
index d63925ac..468fbc7c 100644
--- a/devstack/pip.py
+++ b/devstack/pip.py
@@ -54,7 +54,6 @@ def uninstall(pips, distro, skip_errors=True):
     pipnames = sorted(pips.keys())
     LOG.info("Uninstalling python packages [%s]" % (", ".join(pipnames)))
     for name in pipnames:
-        pipinfo = pips.get(name, dict())
         try:
             root_cmd = PIP_CMD_NAMES.get(distro, 'pip')
             cmd = [root_cmd, 'uninstall'] + PIP_UNINSTALL_CMD_OPTS + [name]
diff --git a/devstack/utils.py b/devstack/utils.py
index 973d029a..865f7dd2 100644
--- a/devstack/utils.py
+++ b/devstack/utils.py
@@ -24,7 +24,6 @@ import platform
 import random
 import re
 import termcolor
-import traceback
 
 from devstack import exceptions as excp
 from devstack import log as logging