Remove the six library

This commit removes the six library from the repo, as
the only supported Python version is 3.9.

Test Plan:
PASS: Success on tox command.

Story: 2011149
Task: 50395

Change-Id: I44942ba91791c3ea541c7642107b48e8b2b2d457
Signed-off-by: Hugo Brito <hugo.brito@windriver.com>

.git-blame-ignore-revs

@@ -0,0 +1,22 @@
+# git hyper-blame master ignore list.
+#
+# This file contains a list of git hashes of revisions to be ignored by git
+# hyper-blame. These revisions are considered "unimportant" in that they are
+# unlikely to be what you are interested in when blaming.
+#
+# Instructions:
+# - Only large (generally automated) reformatting or renaming commits should be
+#   added to this list. Do not put things here just because you feel they are
+#   trivial or unimportant. If in doubt, do not put it on this list.
+# - Precede each revision with a comment containing the first line of its log.
+#   For bulk work over many commits, place all commits in a block with a single
+#   comment at the top describing the work done in those commits.
+# - Only put full 40-character hashes on this list (not short hashes or any
+#   other revision reference).
+# - Append to the bottom of the file (revisions should be in chronological order
+#   from oldest to newest).
+# - Because you must use a hash, you need to append to this list in a follow-up
+#   commit to the actual reformatting commit that you are trying to ignore.
+
+# Format all Python files with Black formatter
+b5cbd9480cef12fee05ae6cf68aaae5aaa931969

distributedcloud-client/.pylintrc

@@ -92,7 +92,7 @@ ignore-mixin-members=yes
 # List of module names for which member attributes should not be checked
 # (useful for modules/projects where namespaces are manipulated during runtime
 # and thus existing member attributes cannot be deduced by static analysis
-ignored-modules=distutils,eventlet.green.subprocess,six,six.moves
+ignored-modules=distutils,eventlet.green.subprocess
 
 # List of classes names for which member attributes should not be checked
 # (useful for classes with attributes dynamically set).
@@ -224,4 +224,4 @@ valid-classmethod-first-arg=cls
 [EXCEPTIONS]
 # Exceptions that will emit a warning when being caught. Defaults to
 # "Exception"
-overgeneral-exceptions=Exception
+overgeneral-exceptions=builtins.Exception

distributedcloud-client/dcmanagerclient/api/client.py

@@ -14,8 +14,6 @@
 #    limitations under the License.
 #
 
-import six
-
 from dcmanagerclient.api.v1 import client as client_v1
 
 
@@ -39,7 +37,7 @@ def client(
     session=None,
     **kwargs
 ):
-    if dcmanager_url and not isinstance(dcmanager_url, six.string_types):
+    if dcmanager_url and not isinstance(dcmanager_url, str):
         raise RuntimeError("DC Manager url should be a string.")
 
     return client_v1.Client(

distributedcloud-client/dcmanagerclient/api/v1/client.py

@@ -18,7 +18,6 @@
 
 import keystoneauth1.identity.generic as auth_plugin
 import osprofiler.profiler
-import six
 from keystoneauth1 import session as ks_session
 
 from dcmanagerclient.api import httpclient
@@ -74,7 +73,7 @@ class Client:
         **kwargs,
     ):
         """DC Manager communicates with Keystone to fetch necessary values."""
-        if dcmanager_url and not isinstance(dcmanager_url, six.string_types):
+        if dcmanager_url and not isinstance(dcmanager_url, str):
             raise RuntimeError("DC Manager url should be a string.")
 
         if auth_url or session:

distributedcloud-client/dcmanagerclient/commands/v1/base.py

@@ -18,12 +18,10 @@
 
 import abc
 
-import six
 from osc_lib.command import command
 
 
-@six.add_metaclass(abc.ABCMeta)
-class DCManagerLister(command.Lister):
+class DCManagerLister(command.Lister, metaclass=abc.ABCMeta):
     @abc.abstractmethod
     def _get_format_function(self):
         raise NotImplementedError
@@ -52,8 +50,7 @@ class DCManagerLister(command.Lister):
         return f()
 
 
-@six.add_metaclass(abc.ABCMeta)
-class DCManagerShowOne(command.ShowOne):
+class DCManagerShowOne(command.ShowOne, metaclass=abc.ABCMeta):
     @abc.abstractmethod
     def _get_format_function(self):
         raise NotImplementedError
@@ -83,8 +80,7 @@ class DCManagerShowOne(command.ShowOne):
         return f()
 
 
-@six.add_metaclass(abc.ABCMeta)
-class DCManagerShow(DCManagerLister, DCManagerShowOne):
+class DCManagerShow(DCManagerLister, DCManagerShowOne, metaclass=abc.ABCMeta):
     @abc.abstractmethod
     def should_list(self, parsed_args):
         """Uses Lister behaviour if True, ShowOne otherwise."""

distributedcloud-client/dcmanagerclient/commands/v1/subcloud_manager.py

@@ -18,7 +18,6 @@ import base64
 import os
 
 from osc_lib.command import command
-import six
 
 from dcmanagerclient import exceptions
 from dcmanagerclient import utils
@@ -907,7 +906,7 @@ class RedeploySubcloud(base.DCManagerShowOne):
             "WARNING: This will redeploy the subcloud. "
             "All applications and data on the subcloud will be lost."
         )
-        confirm = six.moves.input('Please type "redeploy" to confirm: ').strip().lower()
+        confirm = input('Please type "redeploy" to confirm: ').strip().lower()
         if confirm == "redeploy":
             try:
                 return subcloud_manager.redeploy_subcloud(

distributedcloud-client/dcmanagerclient/tests/base_shell_test.py

@@ -15,10 +15,10 @@
 #    limitations under the License.
 #
 
+import io
 import os
 import sys
 
-import six
 import testtools
 
 from dcmanagerclient import shell
@@ -31,8 +31,8 @@ class BaseShellTests(testtools.TestCase):
         _old_env, os.environ = os.environ, clean_env.copy()
 
         try:
-            sys.stdout = six.moves.cStringIO()
-            sys.stderr = six.moves.cStringIO()
+            sys.stdout = io.StringIO()
+            sys.stderr = io.StringIO()
             _shell = shell.DCManagerShell()
             _shell.run(argstr.split())
         except SystemExit:

distributedcloud-client/dcmanagerclient/tests/v1/test_subcloud_manager.py

@@ -387,7 +387,7 @@ class TestCLISubcloudManagerV1(base.BaseCommandTest):
         self.assertEqual(base.SUBCLOUD_FIELD_RESULT_LIST_WITH_PEERID, actual_call[1])
 
     @mock.patch("getpass.getpass", return_value="testpassword")
-    @mock.patch("six.moves.input", return_value="redeploy")
+    @mock.patch.object(subcloud_cmd, "input", return_value="redeploy")
     def test_redeploy_subcloud(self, _mock_input, _mock_getpass):
         self.client.subcloud_manager.redeploy_subcloud.return_value = [
             self.subcloud_resource
@@ -421,7 +421,7 @@ class TestCLISubcloudManagerV1(base.BaseCommandTest):
         self.assertEqual(base.SUBCLOUD_FIELD_RESULT_LIST_WITH_PEERID, actual_call[1])
 
     @mock.patch("getpass.getpass", return_value="testpassword")
-    @mock.patch("six.moves.input", return_value="redeploy")
+    @mock.patch.object(subcloud_cmd, "input", return_value="redeploy")
     def test_redeploy_subcloud_no_parameters(self, _mock_input, _mock_getpass):
         self.client.subcloud_manager.redeploy_subcloud.return_value = [
             self.subcloud_resource
@@ -430,7 +430,7 @@ class TestCLISubcloudManagerV1(base.BaseCommandTest):
         self.assertEqual(base.SUBCLOUD_FIELD_RESULT_LIST_WITH_PEERID, actual_call[1])
 
     @mock.patch("getpass.getpass", return_value="testpassword")
-    @mock.patch("six.moves.input", return_value="redeploy")
+    @mock.patch.object(subcloud_cmd, "input", return_value="redeploy")
     def test_redeploy_bootstrap_files_does_not_exists(self, _mock_input, _mock_getpass):
         self.client.subcloud_manager.redeploy_subcloud.return_value = [
             self.subcloud_resource

distributedcloud-client/requirements.txt

@@ -11,4 +11,3 @@ python-keystoneclient>=3.8.0 # Apache-2.0
 PyYAML>=3.10.0 # MIT
 requests!=2.12.2,!=2.13.0,>=2.10.0 # Apache-2.0
 requests-toolbelt # Apache-2.0
-six>=1.9.0 # MIT