Replace six.iteritems() with .items()

1.As mentioned in [1], we should avoid using
six.iteritems to achieve iterators. We can
use dict.items instead, as it will return
iterators in PY3 as well. And dict.items/keys
will more readable. 2.In py2, the performance
about list should be negligible, see the link [2].
[1] https://wiki.openstack.org/wiki/Python3
[2] http://lists.openstack.org/pipermail/openstack-dev/2015-June/066391.html

Change-Id: I8b181c1b049105fdd698385c4aba3546126a53dc

saharaclient/api/base.py

@@ -16,7 +16,6 @@
 import copy
 import json
 
-import six
 from six.moves.urllib import parse
 
 from saharaclient._i18n import _
@@ -34,12 +33,12 @@ class Resource(object):
         self._add_details(info)
 
     def _set_defaults(self, info):
-        for name, value in six.iteritems(self.defaults):
+        for name, value in self.defaults.items():
             if name not in info:
                 info[name] = value
 
     def _add_details(self, info):
-        for (k, v) in six.iteritems(info):
+        for (k, v) in info.items():
             try:
                 setattr(self, k, v)
                 self._info[k] = v
@@ -87,12 +86,12 @@ class ResourceManager(object):
         return found[0]
 
     def _copy_if_defined(self, data, **kwargs):
-        for var_name, var_value in six.iteritems(kwargs):
+        for var_name, var_value in kwargs.items():
             if var_value is not None:
                 data[var_name] = var_value
 
     def _copy_if_updated(self, data, **kwargs):
-        for var_name, var_value in six.iteritems(kwargs):
+        for var_name, var_value in kwargs.items():
             if not isinstance(var_value, NotUpdated):
                 data[var_name] = var_value
 

saharaclient/osc/v1/plugins.py

@@ -22,7 +22,6 @@ from osc_lib import exceptions
 from osc_lib import utils as osc_utils
 from oslo_log import log as logging
 from oslo_serialization import jsonutils
-import six
 
 from saharaclient.osc.v1 import utils
 
@@ -30,11 +29,11 @@ from saharaclient.osc.v1 import utils
 def _serialize_label_items(plugin):
     labels = {}
     pl_labels = plugin.get('plugin_labels', {})
-    for label, data in six.iteritems(pl_labels):
+    for label, data in pl_labels.items():
         labels['plugin: %s' % label] = data['status']
     vr_labels = plugin.get('version_labels', {})
-    for version, version_data in six.iteritems(vr_labels):
-        for label, data in six.iteritems(version_data):
+    for version, version_data in vr_labels.items():
+        for label, data in version_data.items():
             labels[
                 'plugin version %s: %s' % (version, label)] = data['status']
     labels = utils.prepare_data(labels, list(labels.keys()))

saharaclient/osc/v1/utils.py

@@ -13,7 +13,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import six
 import time
 
 from oslo_utils import timeutils
@@ -53,7 +52,7 @@ def get_resource_id(manager, name_or_id):
 
 
 def create_dict_from_kwargs(**kwargs):
-    return dict((k, v) for (k, v) in six.iteritems(kwargs) if v is not None)
+    return dict((k, v) for (k, v) in kwargs.items() if v is not None)
 
 
 def prepare_data(data, fields):

saharaclient/tests/unit/base.py

@@ -12,7 +12,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import six
 import testtools
 
 from saharaclient.api import base
@@ -33,7 +32,7 @@ class BaseTestCase(testtools.TestCase):
                                     input_auth_token=self.TOKEN)
 
     def assertFields(self, body, obj):
-        for key, value in six.iteritems(body):
+        for key, value in body.items():
             self.assertEqual(value, getattr(obj, key))