trunk merged

3 files changed, 5 insertions, 5 deletions

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..3bb54a382 100644
--- a/nova/compute/monitor.py
+++ b/nova/compute/monitor.py
@@ -260,7 +260,7 @@ class Instance(object):
 
         try:
             data = self.fetch_cpu_stats()
-            if data != None:
+            if data is not None:
                 LOG.debug('CPU: %s', data)
                 update_rrd(self, 'cpu', data)
 
@@ -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.