From fac394f79cbf9213a340fdc887a5ed58d5262886 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Herv=C3=A9=20Beraud?= <hberaud@redhat.com>
Date: Tue, 2 Jun 2020 20:56:04 +0200
Subject: [PATCH] Stop to use the __future__ module.

The __future__ module [1] was used in this context to ensure compatibility
between python 2 and python 3.

We previously dropped the support of python 2.7 [2] and now we only support
python 3 so we don't need to continue to use this module and the imports
listed below.

Imports commonly used and their related PEPs:
- `division` is related to PEP 238 [3]
- `print_function` is related to PEP 3105 [4]
- `unicode_literals` is related to PEP 3112 [5]
- `with_statement` is related to PEP 343 [6]
- `absolute_import` is related to PEP 328 [7]

[1] https://docs.python.org/3/library/__future__.html
[2] https://governance.openstack.org/tc/goals/selected/ussuri/drop-py27.html
[3] https://www.python.org/dev/peps/pep-0238
[4] https://www.python.org/dev/peps/pep-3105
[5] https://www.python.org/dev/peps/pep-3112
[6] https://www.python.org/dev/peps/pep-0343
[7] https://www.python.org/dev/peps/pep-0328

Change-Id: I15d451f6a832b2e698b28e7351a36ef7aea92abe
---
 detail.py                                              | 2 --
 openstack_requirements/cmds/check_conflicts.py         | 2 --
 openstack_requirements/cmds/check_exists.py            | 2 --
 openstack_requirements/cmds/check_py2.py               | 2 --
 openstack_requirements/cmds/generate.py                | 2 --
 openstack_requirements/cmds/normalize_requirements.py  | 3 ---
 openstack_requirements/tests/test_check_constraints.py | 1 -
 openstack_requirements/tests/test_update.py            | 2 --
 openstack_requirements/tests/test_update_pbr.py        | 2 --
 openstack_requirements/tests/test_update_suffix.py     | 2 --
 tools/check-install.py                                 | 2 --
 11 files changed, 22 deletions(-)

diff --git a/detail.py b/detail.py
index 080bb1101b..8a468c57a5 100644
--- a/detail.py
+++ b/detail.py
@@ -12,8 +12,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from __future__ import print_function
-
 import contextlib
 import json
 import os
diff --git a/openstack_requirements/cmds/check_conflicts.py b/openstack_requirements/cmds/check_conflicts.py
index 32be1e8f77..11c7be4cf8 100644
--- a/openstack_requirements/cmds/check_conflicts.py
+++ b/openstack_requirements/cmds/check_conflicts.py
@@ -14,8 +14,6 @@
 
 """
 
-from __future__ import print_function
-
 import argparse
 import sys
 import traceback
diff --git a/openstack_requirements/cmds/check_exists.py b/openstack_requirements/cmds/check_exists.py
index 76d171b762..5c958af57c 100644
--- a/openstack_requirements/cmds/check_exists.py
+++ b/openstack_requirements/cmds/check_exists.py
@@ -15,8 +15,6 @@ u-c.
 
 """
 
-from __future__ import print_function
-
 import argparse
 
 from packaging.specifiers import SpecifierSet
diff --git a/openstack_requirements/cmds/check_py2.py b/openstack_requirements/cmds/check_py2.py
index c5e2abc8fd..09148547b2 100755
--- a/openstack_requirements/cmds/check_py2.py
+++ b/openstack_requirements/cmds/check_py2.py
@@ -12,8 +12,6 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from __future__ import print_function
-
 import argparse
 
 import pkg_resources
diff --git a/openstack_requirements/cmds/generate.py b/openstack_requirements/cmds/generate.py
index 4e18919ad0..aca59ead92 100644
--- a/openstack_requirements/cmds/generate.py
+++ b/openstack_requirements/cmds/generate.py
@@ -11,8 +11,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from __future__ import print_function
-
 import copy
 import hashlib
 import optparse
diff --git a/openstack_requirements/cmds/normalize_requirements.py b/openstack_requirements/cmds/normalize_requirements.py
index dfac9419bb..a5d728fb54 100644
--- a/openstack_requirements/cmds/normalize_requirements.py
+++ b/openstack_requirements/cmds/normalize_requirements.py
@@ -12,9 +12,6 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from __future__ import print_function
-from __future__ import unicode_literals
-
 import argparse
 import os.path
 
diff --git a/openstack_requirements/tests/test_check_constraints.py b/openstack_requirements/tests/test_check_constraints.py
index 1048fcf64a..535ca49fa9 100644
--- a/openstack_requirements/tests/test_check_constraints.py
+++ b/openstack_requirements/tests/test_check_constraints.py
@@ -9,7 +9,6 @@
 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 # License for the specific language governing permissions and limitations
 # under the License.
-from __future__ import print_function
 
 import io
 import mock
diff --git a/openstack_requirements/tests/test_update.py b/openstack_requirements/tests/test_update.py
index b20264fd7f..9cc94a590d 100644
--- a/openstack_requirements/tests/test_update.py
+++ b/openstack_requirements/tests/test_update.py
@@ -12,8 +12,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from __future__ import print_function
-
 import six
 import sys
 import textwrap
diff --git a/openstack_requirements/tests/test_update_pbr.py b/openstack_requirements/tests/test_update_pbr.py
index f9e46d37f3..81d5a65d41 100644
--- a/openstack_requirements/tests/test_update_pbr.py
+++ b/openstack_requirements/tests/test_update_pbr.py
@@ -16,8 +16,6 @@
 
 # Based on test_update.py
 
-from __future__ import print_function
-
 import testtools
 
 from openstack_requirements.cmds import update
diff --git a/openstack_requirements/tests/test_update_suffix.py b/openstack_requirements/tests/test_update_suffix.py
index 54bff0b53d..b360d84b26 100644
--- a/openstack_requirements/tests/test_update_suffix.py
+++ b/openstack_requirements/tests/test_update_suffix.py
@@ -12,8 +12,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from __future__ import print_function
-
 import testtools
 
 from openstack_requirements.cmds import update
diff --git a/tools/check-install.py b/tools/check-install.py
index 2b2fef2822..ad29b7b8fb 100644
--- a/tools/check-install.py
+++ b/tools/check-install.py
@@ -1,7 +1,5 @@
 #!/usr/bin/env python
 
-from __future__ import print_function
-
 import importlib
 import re
 import sys