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: I739502c3379364aafd2363c09d9a8d539100bf44
This commit is contained in:
Hervé Beraud 2020-06-02 21:07:04 +02:00 committed by Eyal
parent 9a1193ba18
commit 0c90b740cc
5 changed files with 0 additions and 11 deletions

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@ -12,8 +12,6 @@
# License for the specific language governing permissions and limitations
# under the License.
from __future__ import print_function
from datetime import timedelta
from concurrent.futures import ThreadPoolExecutor

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@ -12,8 +12,6 @@
# License for the specific language governing permissions and limitations
# under the License.
from __future__ import absolute_import
import pytz
import sqlalchemy
from sqlalchemy import and_

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@ -12,9 +12,6 @@
# License for the specific language governing permissions and limitations
# under the License.
from __future__ import absolute_import
from oslo_config import cfg
from oslo_db.sqlalchemy import session as db_session
from oslo_log import log

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@ -10,8 +10,6 @@
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import with_statement
from alembic import context
from logging.config import fileConfig
from oslo_db.sqlalchemy import enginefacade

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@ -12,8 +12,6 @@
# License for the specific language governing permissions and limitations
# under the License.
from __future__ import absolute_import
from datetime import datetime
from datetime import timedelta
from dateutil import parser