fix pylint W0102 errors.

nova/scheduler/manager.py

@@ -69,8 +69,10 @@ class SchedulerManager(manager.Manager):
         return self.zone_manager.get_zone_capabilities(context)
 
     def update_service_capabilities(self, context=None, service_name=None,
-                                                host=None, capabilities={}):
+                                                host=None, capabilities=None):
         """Process a capability update from a service node."""
+        if not capability:
+            capability = {}
         self.zone_manager.update_service_capabilities(service_name,
                             host, capabilities)
 

nova/tests/test_auth.py

@@ -62,7 +62,12 @@ class project_generator(object):
 
 
 class user_and_project_generator(object):
-    def __init__(self, manager, user_state={}, project_state={}):
+    def __init__(self, manager, user_state=None, project_state=None):
+        if not user_state:
+            user_state = {}
+        if not project_state:
+            project_state = {}
+
         self.manager = manager
         if 'name' not in user_state:
             user_state['name'] = 'test1'

nova/tests/test_compute.py

@@ -73,8 +73,11 @@ class ComputeTestCase(test.TestCase):
 
         self.stubs.Set(nova.image.fake._FakeImageService, 'show', fake_show)
 
-    def _create_instance(self, params={}):
+    def _create_instance(self, params=None):
         """Create a test instance"""
+        if not params:
+            params = {}
+
         inst = {}
         inst['image_ref'] = 1
         inst['reservation_id'] = 'r-fakeres'
@@ -87,8 +90,11 @@ class ComputeTestCase(test.TestCase):
         inst.update(params)
         return db.instance_create(self.context, inst)['id']
 
-    def _create_instance_type(self, params={}):
+    def _create_instance_type(self, params=None):
         """Create a test instance"""
+        if not params:
+            params = {}
+
         context = self.context.elevated()
         inst = {}
         inst['name'] = 'm1.small'

nova/tests/test_libvirt.py

@@ -1162,8 +1162,11 @@ class NWFilterTestCase(test.TestCase):
                                    'project_id': 'fake',
                                    'instance_type_id': 1})
 
-    def _create_instance_type(self, params={}):
+    def _create_instance_type(self, params=None):
         """Create a test instance"""
+        if not params:
+            params = {}
+
         context = self.context.elevated()
         inst = {}
         inst['name'] = 'm1.small'