Clean up pylint errors in top-level files

Change-Id: Ida7cf1ff0cbf94ad82c7a75708c79ad7bb27f7fd

nova/exception.py

@@ -24,10 +24,10 @@ SHOULD include dedicated exception logging.
 
 """
 
-from functools import wraps
+import functools
 import sys
 
-from novaclient import exceptions as novaclient_exceptions
+import novaclient.exceptions
 import webob.exc
 
 from nova import log as logging
@@ -51,7 +51,7 @@ def novaclient_converter(f):
         try:
             ret = f(*args, **kwargs)
             return ret
-        except novaclient_exceptions.ClientException, e:
+        except novaclient.exceptions.ClientException, e:
             raise ConvertedException(e.code, e.message, e.details)
     return new_f
 
@@ -156,7 +156,7 @@ def wrap_exception(notifier=None, publisher_id=None, event_type=None,
                 # re-raise original exception since it may have been clobbered
                 raise exc_info[0], exc_info[1], exc_info[2]
 
-        return wraps(f)(wrapped)
+        return functools.wraps(f)(wrapped)
     return inner
 
 

nova/manager.py

@@ -53,9 +53,9 @@ This module provides Manager, a base class for managers.
 
 """
 
+from nova.db import base
 from nova import flags
 from nova import log as logging
-from nova.db import base
 from nova.scheduler import api
 from nova import version
 

nova/quota.py

@@ -19,7 +19,6 @@
 """Quotas for instances, volumes, and floating ips."""
 
 from nova import db
-from nova import exception
 from nova import flags
 
 

nova/test.py

@@ -31,13 +31,11 @@ import unittest
 
 import mox
 import nose.plugins.skip
-import nova.image.fake
-import shutil
 import stubout
 
 from nova import flags
+import nova.image.fake
 from nova import log
-from nova import rpc
 from nova import utils
 from nova import service
 from nova.testing.fake import rabbit

nova/utils.py

@@ -25,7 +25,6 @@ import functools
 import inspect
 import json
 import lockfile
-import netaddr
 import os
 import random
 import re
@@ -43,11 +42,11 @@ from eventlet import event
 from eventlet import greenthread
 from eventlet import semaphore
 from eventlet.green import subprocess
+import netaddr
 
 from nova import exception
 from nova import flags
 from nova import log as logging
-from nova import version
 
 
 LOG = logging.getLogger("nova.utils")

nova/wsgi.py

@@ -19,20 +19,16 @@
 
 """Utility methods for working with WSGI servers."""
 
-import os
 import sys
 
-from xml.dom import minidom
-
 import eventlet
 import eventlet.wsgi
 import greenlet
+from paste import deploy
 import routes.middleware
 import webob.dec
 import webob.exc
 
-from paste import deploy
-
 from nova import exception
 from nova import flags
 from nova import log as logging