diff --git a/IPython/html/notebookapp.py b/IPython/html/notebookapp.py
index c3d3f11c5..f0d77055b 100644
--- a/IPython/html/notebookapp.py
+++ b/IPython/html/notebookapp.py
@@ -27,7 +27,6 @@ import socket
 import sys
 import threading
 import time
-import uuid
 import webbrowser
 
 
@@ -36,7 +35,6 @@ import webbrowser
 from IPython.utils.zmqrelated import check_for_zmq
 check_for_zmq('2.1.11', 'IPython.html')
 
-import zmq
 from jinja2 import Environment, FileSystemLoader
 
 # Install the pyzmq ioloop. This has to be done before anything else from
diff --git a/IPython/html/services/clusters/clustermanager.py b/IPython/html/services/clusters/clustermanager.py
index 404eaf40a..3b12a1a6c 100644
--- a/IPython/html/services/clusters/clustermanager.py
+++ b/IPython/html/services/clusters/clustermanager.py
@@ -22,13 +22,11 @@ from tornado import web
 from zmq.eventloop import ioloop
 
 from IPython.config.configurable import LoggingConfigurable
-from IPython.config.loader import load_pyconfig_files
 from IPython.utils.traitlets import Dict, Instance, CFloat
 from IPython.parallel.apps.ipclusterapp import IPClusterStart
 from IPython.core.profileapp import list_profiles_in
 from IPython.core.profiledir import ProfileDir
 from IPython.utils.path import get_ipython_dir
-from IPython.utils.sysinfo import num_cpus
 
 
 #-----------------------------------------------------------------------------
diff --git a/IPython/html/services/kernels/kernelmanager.py b/IPython/html/services/kernels/kernelmanager.py
index ed1c03ec0..93ba04df9 100644
--- a/IPython/html/services/kernels/kernelmanager.py
+++ b/IPython/html/services/kernels/kernelmanager.py
@@ -20,7 +20,7 @@ from tornado import web
 
 from IPython.kernel.multikernelmanager import MultiKernelManager
 from IPython.utils.traitlets import (
-    Dict, List, Unicode, Integer,
+    Dict, List, Unicode,
 )
 
 #-----------------------------------------------------------------------------
diff --git a/IPython/testing/iptest.py b/IPython/testing/iptest.py
index c2b7bee08..d05fd4e30 100644
--- a/IPython/testing/iptest.py
+++ b/IPython/testing/iptest.py
@@ -57,7 +57,7 @@ from nose.core import TestProgram
 from IPython.utils import py3compat
 from IPython.utils.importstring import import_item
 from IPython.utils.path import get_ipython_module_path, get_ipython_package_dir
-from IPython.utils.process import find_cmd, pycmd2argv
+from IPython.utils.process import pycmd2argv
 from IPython.utils.sysinfo import sys_info
 from IPython.utils.tempdir import TemporaryDirectory
 from IPython.utils.warn import warn
diff --git a/IPython/utils/tests/test_io.py b/IPython/utils/tests/test_io.py
index 86ba86459..221fdb427 100644
--- a/IPython/utils/tests/test_io.py
+++ b/IPython/utils/tests/test_io.py
@@ -20,7 +20,7 @@ from subprocess import Popen, PIPE
 
 import nose.tools as nt
 
-from IPython.testing import decorators as dec
+from IPython.testing.ipunittest import ParametricTestCase
 from IPython.utils.io import Tee, capture_output
 from IPython.utils.py3compat import doctest_refactor_print
 
@@ -38,7 +38,7 @@ def test_tee_simple():
     nt.assert_equal(chan.getvalue(), text+"\n")
 
 
-class TeeTestCase(dec.ParametricTestCase):
+class TeeTestCase(ParametricTestCase):
 
     def tchan(self, channel, check='close'):
         trap = StringIO()