Remove six library

The six library was used to bridge the py2 > py3
gap. This library is longer required on branches
that do not support Python2.

Change-Id: I40cb90bc6bc058dcbf3659b97dbb489b53adb9d3

container_config_scripts/nova_wait_for_api_service.py

@@ -14,9 +14,9 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 import argparse
+from configparser import ConfigParser
 import logging
 import os
-import six
 import sys
 import time
 
@@ -27,17 +27,8 @@ from keystoneauth1 import session
 from novaclient import client
 from novaclient.exceptions import ClientException
 
-# In python3 SafeConfigParser was renamed to ConfigParser and the default
-# for duplicate options default to true. In case of nova it is valid to
-# have duplicate option lines, e.g. passthrough_whitelist which leads to
-# issues reading the nova.conf
-# https://bugs.launchpad.net/tripleo/+bug/1827775
-if six.PY3:
-    from six.moves.configparser import ConfigParser
-    config = ConfigParser(strict=False)
-else:
-    from six.moves.configparser import SafeConfigParser
-    config = SafeConfigParser()
+
+config = ConfigParser(strict=False)
 
 debug = os.getenv('__OS_DEBUG', 'false')
 

container_config_scripts/nova_wait_for_compute_service.py

@@ -14,9 +14,9 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 import argparse
+from configparser import ConfigParser
 import logging
 import os
-import six
 import socket
 import sys
 import time
@@ -27,17 +27,8 @@ from keystoneauth1 import session
 
 from novaclient import client
 
-# In python3 SafeConfigParser was renamed to ConfigParser and the default
-# for duplicate options default to true. In case of nova it is valid to
-# have duplicate option lines, e.g. passthrough_whitelist which leads to
-# issues reading the nova.conf
-# https://bugs.launchpad.net/tripleo/+bug/1827775
-if six.PY3:
-    from six.moves.configparser import ConfigParser
-    config = ConfigParser(strict=False)
-else:
-    from six.moves.configparser import SafeConfigParser
-    config = SafeConfigParser()
+
+config = ConfigParser(strict=False)
 
 debug = os.getenv('__OS_DEBUG', 'false')
 

container_config_scripts/placement_wait_for_service.py

@@ -17,10 +17,10 @@
 # shell script to check if placement API is up after X attempts.
 # Default max is 60 iterations with 10s (default) timeout in between.
 
+from configparser import ConfigParser
 import logging
 import os
 import re
-import six
 import sys
 import time
 
@@ -29,18 +29,8 @@ from keystoneauth1 import session
 from keystoneclient.v3 import client
 import requests
 
-# In python3 SafeConfigParser was renamed to ConfigParser and the default
-# for duplicate options default to true. In case of nova it is valid to
-# have duplicate option lines, e.g. passthrough_whitelist which leads to
-# issues reading the nova.conf
-# https://bugs.launchpad.net/tripleo/+bug/1827775
-if six.PY3:
-    from six.moves.configparser import ConfigParser
-    config = ConfigParser(strict=False)
-else:
-    from six.moves.configparser import SafeConfigParser
-    config = SafeConfigParser()
 
+config = ConfigParser(strict=False)
 
 debug = os.getenv('__OS_DEBUG', 'false')
 

container_config_scripts/tests/test_nova_statedir_ownership.py

@@ -18,7 +18,6 @@ from unittest import mock
 import contextlib
 import os
 from os import stat as orig_stat
-import six
 import stat
 import sys
 
@@ -375,7 +374,7 @@ class NovaStatedirOwnershipManagerTestCase(base.BaseTestCase):
 
         # Determine which paths should change uid/gid
         expected_changes = {}
-        for k, v in six.iteritems(testtree):
+        for k, v in testtree.items():
             if k == '/var/lib/nova/upgrade_marker':
                 # Ignore the marker, it should be deleted
                 continue
@@ -394,7 +393,7 @@ class NovaStatedirOwnershipManagerTestCase(base.BaseTestCase):
 
         with fake_testtree(testtree) as (_, _, _, _, fake_unlink, _, _):
             NovaStatedirOwnershipManager('/var/lib/nova').run()
-            for fn, expected in six.iteritems(expected_changes):
+            for fn, expected in expected_changes.items():
                 assert_ids(testtree, fn, expected[0], expected[1])
             fake_unlink.assert_called_with('/var/lib/nova/upgrade_marker')
 

requirements.txt

@@ -4,5 +4,4 @@
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
 PyYAML>=3.12 # MIT
 Jinja2>=2.10 # BSD License (3 clause)
-six>=1.10.0 # MIT
 tripleo-common>=7.1.0 # Apache-2.0

tools/convert_nic_config.py

@@ -17,7 +17,6 @@ import datetime
 import os
 import re
 import shutil
-import six
 import sys
 import yaml
 
@@ -140,9 +139,9 @@ class TemplateLoader(yaml.SafeLoader):
         return collections.OrderedDict(self.construct_pairs(node))
 
 
-TemplateDumper.add_representer(six.text_type,
+TemplateDumper.add_representer(str,
                                TemplateDumper.description_presenter)
-TemplateDumper.add_representer(six.binary_type,
+TemplateDumper.add_representer(bytes,
                                TemplateDumper.description_presenter)
 
 TemplateDumper.add_representer(collections.OrderedDict,

tools/merge-new-params-nic-config-script.py

@@ -17,7 +17,6 @@ import datetime
 import os
 import re
 import shutil
-import six
 import subprocess
 import sys
 import yaml
@@ -167,9 +166,9 @@ class TemplateLoader(yaml.SafeLoader):
         return collections.OrderedDict(self.construct_pairs(node))
 
 
-TemplateDumper.add_representer(six.text_type,
+TemplateDumper.add_representer(str,
                                TemplateDumper.description_presenter)
-TemplateDumper.add_representer(six.binary_type,
+TemplateDumper.add_representer(bytes,
                                TemplateDumper.description_presenter)
 
 TemplateDumper.add_representer(collections.OrderedDict,

tools/process-templates.py

@@ -15,7 +15,6 @@ import argparse
 import jinja2
 import os
 import shutil
-import six
 import sys
 import yaml
 
@@ -33,7 +32,7 @@ def _shutil_copy_if_not_same(src, dst):
         try:
             shutil.copy(src, dst)
         except Exception as ex:
-            if 'are the same file' in six.text_type(ex):
+            if 'are the same file' in str(ex):
                 pass
             else:
                 raise
@@ -98,7 +97,7 @@ def _j2_render_to_file(j2_template, j2_data, outfile_name=None,
         r_template = template.render(**j2_data)
     except jinja2.exceptions.TemplateError as ex:
         error_msg = ("Error rendering template %s : %s"
-                     % (yaml_f, six.text_type(ex)))
+                     % (yaml_f, str(ex)))
         print(error_msg)
         raise Exception(error_msg)
     if not dry_run:

tools/yaml-validate.py

@@ -15,7 +15,6 @@ import argparse
 import glob
 import os
 import re
-import six
 import sys
 import traceback
 import yaml
@@ -24,7 +23,7 @@ from copy import copy
 
 
 def is_string(value):
-    return isinstance(value, six.string_types)
+    return isinstance(value, str)
 
 
 # Only permit the template alias versions.

tripleo_heat_templates/tests/test_environment_generator.py

@@ -17,7 +17,6 @@ import tempfile
 from unittest import mock
 
 from oslotest import base
-import six
 import testscenarios
 
 from tripleo_heat_templates import environment_generator
@@ -727,8 +726,8 @@ resource_registry:
             cls.content_scenarios)
 
     def test_generator(self):
-        fake_input = io.StringIO(six.text_type(self.input_file))
-        fake_template = io.StringIO(six.text_type(self.template))
+        fake_input = io.StringIO(str(self.input_file))
+        fake_template = io.StringIO(str(self.template))
         _, fake_output_path = tempfile.mkstemp()
         fake_output = open(fake_output_path, 'w')
         with mock.patch('tripleo_heat_templates.environment_generator.open',
@@ -740,7 +739,7 @@ resource_registry:
             if self.nested_output:
                 _, fake_nested_output_path = tempfile.mkstemp()
                 fake_nested_output = open(fake_nested_output_path, 'w')
-                fake_template2 = io.StringIO(six.text_type(self.template))
+                fake_template2 = io.StringIO(str(self.template))
                 mock_se = [fake_input, fake_template, fake_output,
                            fake_template2, fake_nested_output]
             mock_open.side_effect = mock_se