diff --git a/monasca_tempest_tests/services/monasca_client.py b/monasca_tempest_tests/services/monasca_client.py
index 39eb27d..366f5cb 100644
--- a/monasca_tempest_tests/services/monasca_client.py
+++ b/monasca_tempest_tests/services/monasca_client.py
@@ -197,7 +197,7 @@ class MonascaClient(rest_client.RestClient):
         request_body['ok_actions'] = ok_actions
         request_body['undetermined_actions'] = undetermined_actions
 
-        for key, value in kwargs.iteritems():
+        for key, value in kwargs.items():
             request_body[key] = value
 
         resp, response_body = self.put(uri, json.dumps(request_body))
@@ -236,7 +236,7 @@ class MonascaClient(rest_client.RestClient):
         if undetermined_actions is not None:
             request_body['undetermined_actions'] = undetermined_actions
 
-        for key, value in kwargs.iteritems():
+        for key, value in kwargs.items():
             request_body[key] = value
 
         resp, response_body = self.patch(uri, json.dumps(request_body))
@@ -266,7 +266,7 @@ class MonascaClient(rest_client.RestClient):
         request_body['lifecycle_state'] = lifecycle_state
         request_body['link'] = link
 
-        for key, value in kwargs.iteritems():
+        for key, value in kwargs.items():
             request_body[key] = value
 
         resp, response_body = self.put(uri, json.dumps(request_body))
@@ -283,7 +283,7 @@ class MonascaClient(rest_client.RestClient):
         if link is not None:
             request_body['link'] = link
 
-        for key, value in kwargs.iteritems():
+        for key, value in kwargs.items():
             request_body[key] = value
 
         resp, response_body = self.patch(uri, json.dumps(request_body))
@@ -328,7 +328,7 @@ class MonascaClient(rest_client.RestClient):
         request_body['alarm_actions'] = alarm_actions
         request_body['undetermined_actions'] = undetermined_actions
 
-        for key, value in kwargs.iteritems():
+        for key, value in kwargs.items():
             request_body[key] = value
 
         resp, response_body = self.put(uri, json.dumps(request_body))
diff --git a/monasca_tempest_tests/tests/api/test_alarm_definitions.py b/monasca_tempest_tests/tests/api/test_alarm_definitions.py
index e01b13e..d598a4f 100644
--- a/monasca_tempest_tests/tests/api/test_alarm_definitions.py
+++ b/monasca_tempest_tests/tests/api/test_alarm_definitions.py
@@ -16,6 +16,7 @@
 import time
 
 import six.moves.urllib.parse as urlparse
+from six import PY3
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions
@@ -219,8 +220,7 @@ class TestAlarmDefinitions(base.BaseMonascaTest):
         alarm_def_name = data_utils.rand_name('monitoring_alarm')
         alarm_definition = helpers.create_alarm_definition(
             name=alarm_def_name,
-            expression="avg(mem_total_mb{dev=\usr\local\bin}) "
-                       "gt 0",
+            expression="avg(mem_total_mb{dev=\\usr\local\bin}) gt 0",
             alarm_actions=[notification_id],
             ok_actions=[notification_id],
             undetermined_actions=[notification_id],
@@ -339,8 +339,9 @@ class TestAlarmDefinitions(base.BaseMonascaTest):
 
     @decorators.attr(type="gate")
     def test_list_alarm_definitions_with_multibyte_character(self):
-        name = data_utils.rand_name('ａｌａｒｍ＿ｄｅｆｉｎｉｔｉｏｎ').decode('utf8')
-        description = 'ｄｅｓｃｒｉｐｔｉｏｎ'.decode('utf8')
+        rand_name = data_utils.rand_name('ａｌａｒｍ＿ｄｅｆｉｎｉｔｉｏｎ')
+        name = rand_name if PY3 else rand_name.decode('utf8')
+        description = 'ｄｅｓｃｒｉｐｔｉｏｎ' if PY3 else 'ｄｅｓｃｒｉｐｔｉｏｎ'.decode('utf8')
 
         response_body_list = self._create_alarm_definitions(
             name=name,
@@ -720,8 +721,9 @@ class TestAlarmDefinitions(base.BaseMonascaTest):
     @decorators.attr(type="gate")
     def test_get_alarm_definition_with_multibyte_character(self):
         # Create an alarm definition
-        name = data_utils.rand_name('ａｌａｒｍ＿ｄｅｆｉｎｉｔｉｏｎ').decode('utf8')
-        description = 'ｄｅｓｃｒｉｐｔｉｏｎ'.decode('utf8')
+        rand_name = data_utils.rand_name('ａｌａｒｍ＿ｄｅｆｉｎｉｔｉｏｎ')
+        name = rand_name if PY3 else rand_name.decode('utf-8')
+        description = 'ｄｅｓｃｒｉｐｔｉｏｎ' if PY3 else 'ｄｅｓｃｒｉｐｔｉｏｎ'.decode('utf8')
         response_body_list = self._create_alarm_definitions(
             name=name,
             description=description,
diff --git a/monasca_tempest_tests/tests/api/test_alarms.py b/monasca_tempest_tests/tests/api/test_alarms.py
index 06782bc..27edc01 100644
--- a/monasca_tempest_tests/tests/api/test_alarms.py
+++ b/monasca_tempest_tests/tests/api/test_alarms.py
@@ -13,7 +13,6 @@
 # under the License.
 
 import time
-import urllib
 
 import six.moves.urllib.parse as urlparse
 
@@ -527,7 +526,7 @@ class TestAlarms(base.BaseMonascaTest):
         for iter in range(2):
             sort_by_params = 'link,lifecycle_state'
             if iter == 1:
-                query_parms = urllib.urlencode([('sort_by', sort_by_params)])
+                query_parms = urlparse.urlencode([('sort_by', sort_by_params)])
             else:
                 query_parms = 'sort_by=' + sort_by_params
             resp, response_body = self.monasca_client.list_alarms(
diff --git a/monasca_tempest_tests/tests/api/test_alarms_count.py b/monasca_tempest_tests/tests/api/test_alarms_count.py
index 08e76b6..77d2edf 100644
--- a/monasca_tempest_tests/tests/api/test_alarms_count.py
+++ b/monasca_tempest_tests/tests/api/test_alarms_count.py
@@ -13,7 +13,8 @@
 # under the License.
 
 import time
-import urllib
+
+import six.moves.urllib.parse as parse
 
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
@@ -239,7 +240,7 @@ class TestAlarmsCount(base.BaseMonascaTest):
         # a string. The API needs to handle both.
         # test_with_all_group_by_params tests multiple group_by without
         # urlencode
-        query_params = urllib.urlencode([('group_by', 'state,severity')])
+        query_params = parse.urlencode([('group_by', 'state,severity')])
         resp, response_body = self.monasca_client.count_alarms("?" + query_params)
         self._verify_counts_format(response_body, group_by=['state', 'severity'])
 
diff --git a/monasca_tempest_tests/tests/api/test_alarms_state_history_one_transition.py b/monasca_tempest_tests/tests/api/test_alarms_state_history_one_transition.py
index 98c8fa8..d35c47a 100644
--- a/monasca_tempest_tests/tests/api/test_alarms_state_history_one_transition.py
+++ b/monasca_tempest_tests/tests/api/test_alarms_state_history_one_transition.py
@@ -92,7 +92,7 @@ class TestAlarmsStateHistoryOneTransition(base.BaseMonascaTest):
         if elements:
             element = elements[0]
             dimension = element['metrics'][0]['dimensions']
-            dimension_items = dimension.items()
+            dimension_items = list(dimension.items())
             dimension_item = dimension_items[0]
             dimension_item_0 = dimension_item[0]
             dimension_item_1 = dimension_item[1]
diff --git a/monasca_tempest_tests/tests/api/test_dimensions.py b/monasca_tempest_tests/tests/api/test_dimensions.py
index 4a09e40..aba2f64 100644
--- a/monasca_tempest_tests/tests/api/test_dimensions.py
+++ b/monasca_tempest_tests/tests/api/test_dimensions.py
@@ -14,7 +14,8 @@
 # under the License.
 
 import time
-from urllib import urlencode
+
+from six.moves.urllib.parse import urlencode
 
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
diff --git a/monasca_tempest_tests/tests/api/test_measurements.py b/monasca_tempest_tests/tests/api/test_measurements.py
index 49ef5e4..3823b45 100644
--- a/monasca_tempest_tests/tests/api/test_measurements.py
+++ b/monasca_tempest_tests/tests/api/test_measurements.py
@@ -14,6 +14,8 @@
 
 import time
 
+from six import text_type
+
 from monasca_tempest_tests.tests.api import base
 from monasca_tempest_tests.tests.api import constants
 from monasca_tempest_tests.tests.api import helpers
@@ -90,7 +92,7 @@ class TestMeasurements(base.BaseMonascaTest):
                        format(name2, start_time, end_time))
 
         for timer in range(constants.MAX_RETRIES):
-            responses = map(cls.monasca_client.list_measurements, queries)
+            responses = list(map(cls.monasca_client.list_measurements, queries))
             resp_first = responses[0][0]
             response_body_first = responses[0][1]
             resp_second = responses[1][0]
@@ -271,7 +273,7 @@ class TestMeasurements(base.BaseMonascaTest):
         self._verify_list_measurements_elements(elements, None, None)
         for measurements in elements:
             self.assertEqual(1, len(measurements['dimensions'].keys()))
-            self.assertEqual([u'key2'], measurements['dimensions'].keys())
+            self.assertEqual([u'key2'], list(measurements['dimensions'].keys()))
 
     @decorators.attr(type="gate")
     def test_list_measurements_with_group_by_multiple(self):
@@ -347,7 +349,7 @@ class TestMeasurements(base.BaseMonascaTest):
                        '}&merge_metrics=false'.
                        format(self._names_list[0], self._start_time,
                               self._end_time))
-        responses = map(self.monasca_client.list_measurements, queries)
+        responses = list(map(self.monasca_client.list_measurements, queries))
         for i in range(2):
             self._verify_list_measurements(responses[i][0], responses[i][1])
 
@@ -388,7 +390,7 @@ class TestMeasurements(base.BaseMonascaTest):
             self.assertEqual(set(element),
                              set(['columns', 'dimensions', 'id',
                                   'measurements', 'name']))
-            self.assertTrue(type(element['name']) is unicode)
+            self.assertTrue(type(element['name']) is text_type)
             self.assertTrue(type(element['dimensions']) is dict)
             self.assertTrue(type(element['columns']) is list)
             self.assertTrue(type(element['measurements']) is list)
diff --git a/monasca_tempest_tests/tests/api/test_metrics.py b/monasca_tempest_tests/tests/api/test_metrics.py
index 67453b7..c764360 100644
--- a/monasca_tempest_tests/tests/api/test_metrics.py
+++ b/monasca_tempest_tests/tests/api/test_metrics.py
@@ -18,6 +18,8 @@
 import time
 
 from six.moves import urllib_parse as urlparse
+from six import PY3
+from six import text_type
 
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
@@ -75,15 +77,20 @@ class TestMetrics(base.BaseMonascaTest):
 
     @decorators.attr(type='gate')
     def test_create_metric_with_multibyte_character(self):
-        name = data_utils.rand_name('ｎａｍｅ').decode('utf8')
-        key = data_utils.rand_name('ｋｅｙ').decode('utf8')
-        value = data_utils.rand_name('ｖａｌｕｅ').decode('utf8')
+        name = data_utils.rand_name('ｎａｍｅ') if PY3 \
+            else data_utils.rand_name('ｎａｍｅ').decode('utf8')
+        key = data_utils.rand_name('ｋｅｙ') if PY3 \
+            else data_utils.rand_name('ｋｅｙ').decode('utf8')
+        value = data_utils.rand_name('ｖａｌｕｅ') if PY3 \
+            else data_utils.rand_name('ｖａｌｕｅ').decode('utf8')
         timestamp = int(round(time.time() * 1000))
         time_iso = helpers.timestamp_to_iso(timestamp)
         end_timestamp = int(round((time.time() + 3600 * 24) * 1000))
         end_time_iso = helpers.timestamp_to_iso(end_timestamp)
-        value_meta_key = data_utils.rand_name('value_meta_ｋｅｙ').decode('utf8')
-        value_meta_value = data_utils.rand_name('value_meta_ｖａｌｕｅ').decode('utf8')
+        value_meta_key = data_utils.rand_name('value_meta_ｋｅｙ') if PY3 \
+            else data_utils.rand_name('value_meta_ｋｅｙ').decode('utf8')
+        value_meta_value = data_utils.rand_name('value_meta_ｖａｌｕｅ') if PY3 \
+            else data_utils.rand_name('value_meta_ｖａｌｕｅ').decode('utf8')
         metric = helpers.create_metric(name=name,
                                        dimensions={key: value},
                                        timestamp=timestamp,
@@ -616,8 +623,8 @@ class TestMetrics(base.BaseMonascaTest):
 
     def _verify_list_metrics_element(self, element, test_key=None,
                                      test_value=None, test_name=None):
-        self.assertTrue(type(element['id']) is unicode)
-        self.assertTrue(type(element['name']) is unicode)
+        self.assertTrue(type(element['id']) is text_type)
+        self.assertTrue(type(element['name']) is text_type)
         self.assertTrue(type(element['dimensions']) is dict)
         self.assertEqual(set(element), set(['dimensions', 'id', 'name']))
         self.assertTrue(str(element['id']) is not None)
@@ -653,7 +660,7 @@ class TestMetrics(base.BaseMonascaTest):
             if elements:
                 dimensions = elements[0]
                 dimension = dimensions['dimensions']
-                value = dimension[unicode(key)]
+                value = dimension[text_type(key)]
                 self.assertEqual(value_org, str(value))
                 break
             else:
diff --git a/monasca_tempest_tests/tests/api/test_metrics_names.py b/monasca_tempest_tests/tests/api/test_metrics_names.py
index 4ff87b8..e96dd29 100644
--- a/monasca_tempest_tests/tests/api/test_metrics_names.py
+++ b/monasca_tempest_tests/tests/api/test_metrics_names.py
@@ -14,12 +14,13 @@
 
 import time
 
+from six.moves.urllib.parse import urlencode
+
 from monasca_tempest_tests.tests.api import base
 from monasca_tempest_tests.tests.api import constants
 from monasca_tempest_tests.tests.api import helpers
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-from urllib import urlencode
 
 
 class TestMetricsNames(base.BaseMonascaTest):
diff --git a/monasca_tempest_tests/tests/api/test_notification_methods.py b/monasca_tempest_tests/tests/api/test_notification_methods.py
index 4f6f5e6..da34f83 100644
--- a/monasca_tempest_tests/tests/api/test_notification_methods.py
+++ b/monasca_tempest_tests/tests/api/test_notification_methods.py
@@ -15,6 +15,7 @@
 import time
 
 import six.moves.urllib.parse as urlparse
+from six import text_type
 
 from monasca_tempest_tests.tests.api import base
 from monasca_tempest_tests.tests.api import constants
@@ -336,11 +337,11 @@ class TestNotificationMethods(base.BaseMonascaTest):
         element = elements[0]
         self.assertTrue(set(['id', 'links', 'name', 'type', 'address', 'period']) ==
                         set(element))
-        self.assertTrue(type(element['id']) is unicode)
+        self.assertTrue(type(element['id']) is text_type)
         self.assertTrue(type(element['links']) is list)
-        self.assertTrue(type(element['name']) is unicode)
-        self.assertTrue(type(element['type']) is unicode)
-        self.assertTrue(type(element['address']) is unicode)
+        self.assertTrue(type(element['name']) is text_type)
+        self.assertTrue(type(element['type']) is text_type)
+        self.assertTrue(type(element['address']) is text_type)
 
         resp, response_body = self.monasca_client.\
             delete_notification_method(id)
diff --git a/monasca_tempest_tests/tests/api/test_statistics.py b/monasca_tempest_tests/tests/api/test_statistics.py
index 02a9c10..1e6e4cd 100644
--- a/monasca_tempest_tests/tests/api/test_statistics.py
+++ b/monasca_tempest_tests/tests/api/test_statistics.py
@@ -16,6 +16,8 @@
 import time
 
 import six.moves.urllib.parse as urlparse
+from six.moves.urllib.parse import urlencode
+from six import text_type
 
 from monasca_tempest_tests.tests.api import base
 from monasca_tempest_tests.tests.api import constants
@@ -23,7 +25,6 @@ from monasca_tempest_tests.tests.api import helpers
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions
-from urllib import urlencode
 
 NUM_MEASUREMENTS = 100
 MIN_REQUIRED_MEASUREMENTS = 2
@@ -331,7 +332,7 @@ class TestStatistics(base.BaseMonascaTest):
         self.assertEqual(len(elements), 2)
         for statistics in elements:
             self.assertEqual(1, len(statistics['dimensions'].keys()))
-            self.assertEqual([u'key2'], statistics['dimensions'].keys())
+            self.assertEqual([u'key2'], list(statistics['dimensions'].keys()))
 
     @decorators.attr(type="gate")
     def test_list_statistics_with_group_by_multiple(self):
@@ -479,9 +480,9 @@ class TestStatistics(base.BaseMonascaTest):
     def _verify_element(self, element):
         self.assertTrue(set(['id', 'name', 'dimensions', 'columns',
                              'statistics']) == set(element))
-        self.assertTrue(type(element['id']) is unicode)
+        self.assertTrue(type(element['id']) is text_type)
         self.assertTrue(element['id'] is not None)
-        self.assertTrue(type(element['name']) is unicode)
+        self.assertTrue(type(element['name']) is text_type)
         self.assertTrue(type(element['dimensions']) is dict)
         self.assertEqual(len(element['dimensions']), 0)
         self.assertTrue(type(element['columns']) is list)