Change '== None' to 'is None'

14 files changed, 24 insertions, 23 deletions

diff --git a/Authors b/Authors
index f4b40a853..ce280749d 100644
--- a/Authors
+++ b/Authors
@@ -27,6 +27,7 @@ Gabe Westmaas <gabe.westmaas@rackspace.com>
 Hisaharu Ishii <ishii.hisaharu@lab.ntt.co.jp>
 Hisaki Ohara <hisaki.ohara@intel.com>
 Ilya Alekseyev <ialekseev@griddynamics.com>
+Jason Koelker <jason@koelker.net>
 Jay Pipes <jaypipes@gmail.com>
 Jesse Andrews <anotherjesse@gmail.com>
 Joe Heck <heckj@mac.com>
diff --git a/bin/nova-manage b/bin/nova-manage
index adc631318..74346cc13 100755
--- a/bin/nova-manage
+++ b/bin/nova-manage
@@ -449,7 +449,7 @@ class FixedIpCommands(object):
         ctxt = context.get_admin_context()
 
         try:
-            if host == None:
+            if host is None:
                 fixed_ips = db.fixed_ip_get_all(ctxt)
             else:
                 fixed_ips = db.fixed_ip_get_all_by_host(ctxt, host)
@@ -499,7 +499,7 @@ class FloatingIpCommands(object):
         """Lists all floating ips (optionally by host)
         arguments: [host]"""
         ctxt = context.get_admin_context()
-        if host == None:
+        if host is None:
             floating_ips = db.floating_ip_get_all(ctxt)
         else:
             floating_ips = db.floating_ip_get_all_by_host(ctxt, host)
@@ -591,7 +591,7 @@ class VmCommands(object):
             _('zone'),
             _('index'))
 
-        if host == None:
+        if host is None:
             instances = db.instance_get_all(context.get_admin_context())
         else:
             instances = db.instance_get_all_by_host(
@@ -864,7 +864,7 @@ class InstanceTypeCommands(object):
         """Lists all active or specific instance types / flavors
         arguments: [name]"""
         try:
-            if name == None:
+            if name is None:
                 inst_types = instance_types.get_all_types()
             elif name == "--all":
                 inst_types = instance_types.get_all_types(True)
diff --git a/nova/api/ec2/cloud.py b/nova/api/ec2/cloud.py
index 10b1d0ac5..bd4c9dcd4 100644
--- a/nova/api/ec2/cloud.py
+++ b/nova/api/ec2/cloud.py
@@ -442,7 +442,7 @@ class CloudController(object):
                                                        group_name)
 
         criteria = self._revoke_rule_args_to_dict(context, **kwargs)
-        if criteria == None:
+        if criteria is None:
             raise exception.ApiError(_("Not enough parameters to build a "
                                        "valid rule."))
 
@@ -664,7 +664,7 @@ class CloudController(object):
                 'volumeId': ec2utils.id_to_ec2_id(volume_id, 'vol-%08x')}
 
     def _convert_to_set(self, lst, label):
-        if lst == None or lst == []:
+        if lst is None or lst == []:
             return None
         if not isinstance(lst, list):
             lst = [lst]
diff --git a/nova/auth/manager.py b/nova/auth/manager.py
index 486845399..8479c95a4 100644
--- a/nova/auth/manager.py
+++ b/nova/auth/manager.py
@@ -268,7 +268,7 @@ class AuthManager(object):
         LOG.debug(_('Looking up user: %r'), access_key)
         user = self.get_user_from_access_key(access_key)
         LOG.debug('user: %r', user)
-        if user == None:
+        if user is None:
             LOG.audit(_("Failed authorization for access key %s"), access_key)
             raise exception.NotFound(_('No user found for access key %s')
                                      % access_key)
@@ -280,7 +280,7 @@ class AuthManager(object):
             project_id = user.name
 
         project = self.get_project(project_id)
-        if project == None:
+        if project is None:
             pjid = project_id
             uname = user.name
             LOG.audit(_("failed authorization: no project named %(pjid)s"
@@ -646,9 +646,9 @@ class AuthManager(object):
         @rtype: User
         @return: The new user.
         """
-        if access == None:
+        if access is None:
             access = str(uuid.uuid4())
-        if secret == None:
+        if secret is None:
             secret = str(uuid.uuid4())
         with self.driver() as drv:
             user_dict = drv.create_user(name, access, secret, admin)
diff --git a/nova/compute/api.py b/nova/compute/api.py
index e6146231c..48f8b7b0e 100644
--- a/nova/compute/api.py
+++ b/nova/compute/api.py
@@ -239,7 +239,7 @@ class API(base.Base):
             # Set sane defaults if not specified
             updates = dict(hostname=self.hostname_factory(instance_id))
             if (not hasattr(instance, 'display_name') or
-                    instance.display_name == None):
+                    instance.display_name is None):
                 updates['display_name'] = "Server %s" % instance_id
 
             instance = self.update(context, instance_id, **updates)
diff --git a/nova/compute/instance_types.py b/nova/compute/instance_types.py
index f893f8478..98b4425c8 100644
--- a/nova/compute/instance_types.py
+++ b/nova/compute/instance_types.py
@@ -61,7 +61,7 @@ def create(name, memory, vcpus, local_gb, flavorid, swap=0,
 
 def destroy(name):
     """Marks instance types as deleted."""
-    if name == None:
+    if name is None:
         raise exception.InvalidInputException(_("No instance type specified"))
     else:
         try:
@@ -73,7 +73,7 @@ def destroy(name):
 
 def purge(name):
     """Removes instance types from database."""
-    if name == None:
+    if name is None:
         raise exception.InvalidInputException(_("No instance type specified"))
     else:
         try:
diff --git a/nova/compute/monitor.py b/nova/compute/monitor.py
index 04e08a235..afe5ddb1e 100644
--- a/nova/compute/monitor.py
+++ b/nova/compute/monitor.py
@@ -313,7 +313,7 @@ class Instance(object):
         LOG.debug('CPU: %d', self.cputime)
 
         # Skip calculation on first pass. Need delta to get a meaningful value.
-        if cputime_last_updated == None:
+        if cputime_last_updated is None:
             return None
 
         # Calculate the number of seconds between samples.
diff --git a/nova/image/local.py b/nova/image/local.py
index d4fd62156..fa5e93346 100644
--- a/nova/image/local.py
+++ b/nova/image/local.py
@@ -101,7 +101,7 @@ class LocalImageService(service.BaseImageService):
             if name == cantidate.get('name'):
                 image = cantidate
                 break
-        if image == None:
+        if image is None:
             raise exception.NotFound
         return image
 
diff --git a/nova/image/s3.py b/nova/image/s3.py
index b1034d151..2a02d4674 100644
--- a/nova/image/s3.py
+++ b/nova/image/s3.py
@@ -48,7 +48,7 @@ flags.DEFINE_string('image_decryption_dir', '/tmp',
 class S3ImageService(service.BaseImageService):
     """Wraps an existing image service to support s3 based register"""
     def __init__(self, service=None, *args, **kwargs):
-        if service == None:
+        if service is None:
             service = utils.import_object(FLAGS.image_service)
         self.service = service
         self.service.__init__(*args, **kwargs)
diff --git a/nova/log.py b/nova/log.py
index d194ab8f0..ea94be194 100644
--- a/nova/log.py
+++ b/nova/log.py
@@ -106,7 +106,7 @@ logging.addLevelName(AUDIT, 'AUDIT')
 
 
 def _dictify_context(context):
-    if context == None:
+    if context is None:
         return None
     if not isinstance(context, dict) \
     and getattr(context, 'to_dict', None):
diff --git a/nova/network/xenapi_net.py b/nova/network/xenapi_net.py
index 9a99602d9..8c22a7d4b 100644
--- a/nova/network/xenapi_net.py
+++ b/nova/network/xenapi_net.py
@@ -47,7 +47,7 @@ def ensure_vlan_bridge(vlan_num, bridge, net_attrs=None):
     network_ref = network_utils.NetworkHelper.find_network_with_name_label(
                                                                        session,
                                                                        bridge)
-    if network_ref == None:
+    if network_ref is None:
         # If bridge does not exists
         # 1 - create network
         description = "network for nova bridge %s" % bridge
diff --git a/nova/tests/api/openstack/test_servers.py b/nova/tests/api/openstack/test_servers.py
index 34513734b..9d3352a1c 100644
--- a/nova/tests/api/openstack/test_servers.py
+++ b/nova/tests/api/openstack/test_servers.py
@@ -79,7 +79,7 @@ def stub_instance(id, user_id=1, private_address=None, public_addresses=None,
 
     inst_type = instance_types.get_instance_type_by_flavor_id(1)
 
-    if public_addresses == None:
+    if public_addresses is None:
         public_addresses = list()
 
     if host != None:
diff --git a/nova/tests/test_scheduler.py b/nova/tests/test_scheduler.py
index ae56a1a16..51d987288 100644
--- a/nova/tests/test_scheduler.py
+++ b/nova/tests/test_scheduler.py
@@ -737,7 +737,7 @@ class SimpleDriverTestCase(test.TestCase):
         ret = self.scheduler.driver._live_migration_src_check(self.context,
                                                               i_ref)
 
-        self.assertTrue(ret == None)
+        self.assertTrue(ret is None)
         db.instance_destroy(self.context, instance_id)
         db.service_destroy(self.context, s_ref['id'])
 
@@ -805,7 +805,7 @@ class SimpleDriverTestCase(test.TestCase):
         ret = self.scheduler.driver._live_migration_dest_check(self.context,
                                                              i_ref,
                                                              'somewhere')
-        self.assertTrue(ret == None)
+        self.assertTrue(ret is None)
         db.instance_destroy(self.context, instance_id)
         db.service_destroy(self.context, s_ref['id'])
 
diff --git a/nova/virt/libvirt_conn.py b/nova/virt/libvirt_conn.py
index ccfce39e4..a405b43fe 100644
--- a/nova/virt/libvirt_conn.py
+++ b/nova/virt/libvirt_conn.py
@@ -1116,7 +1116,7 @@ class LibvirtConnection(driver.ComputeDriver):
                     if child.name == 'target':
                         devdst = child.prop('dev')
 
-                if devdst == None:
+                if devdst is None:
                     continue
 
                 disks.append(devdst)
@@ -1158,7 +1158,7 @@ class LibvirtConnection(driver.ComputeDriver):
                     if child.name == 'target':
                         devdst = child.prop('dev')
 
-                if devdst == None:
+                if devdst is None:
                     continue
 
                 interfaces.append(devdst)