no from __future__ import ... (#2846)

* Update .travis.yml

* no py27 in travis (#2836)

* no py27 in travis

* py37

* flake8 and docs back

* py36 py37 postgres

* py36-apache

* MixedUnicodeBytes removed

* unused imports removed

* no-if-py3

* space

* space

* MixedUnicodeBytesFormat returned

* no from __future__ import

examples/execution_summary_example.py

@@ -44,9 +44,6 @@
 
             ===== Luigi Execution Summary =====
 """
-
-
-from __future__ import print_function
 import datetime
 
 import luigi

examples/foo.py

@@ -23,8 +23,6 @@
             $ luigi --module examples.foo examples.Foo --workers 2 --local-scheduler
 
 """
-
-from __future__ import print_function
 import time
 
 import luigi

examples/foo_complex.py

@@ -23,7 +23,6 @@
             $ luigi --module examples.foo_complex examples.Foo --workers 2 --local-scheduler
 
 """
-from __future__ import division
 import time
 import random
 

examples/ftp_experiment_outputs.py

@@ -14,8 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-
-from __future__ import print_function
 import luigi
 from luigi.contrib.ftp import RemoteTarget
 

examples/ssh_remote_execution.py

@@ -15,8 +15,6 @@
 # limitations under the License.
 #
 
-from __future__ import print_function
-
 from collections import defaultdict
 
 from luigi import six

luigi/contrib/dropbox.py

@@ -15,8 +15,6 @@
 # the License.
 #
 
-from __future__ import absolute_import
-
 import logging
 import ntpath
 import os

luigi/contrib/hadoop.py

@@ -22,8 +22,6 @@
 an example of how to run a Hadoop job.
 """
 
-from __future__ import print_function
-
 import abc
 import datetime
 import glob

luigi/contrib/lsf_runner.py

@@ -18,8 +18,6 @@
    limitations under the License.
 """
 
-from __future__ import print_function
-
 import os
 import sys
 try:

luigi/contrib/mrrunner.py

@@ -27,8 +27,6 @@
 mapper, combiner, or reducer on the Hadoop nodes.
 """
 
-from __future__ import print_function
-
 import pickle
 import logging
 import os

luigi/contrib/pyspark_runner.py

@@ -26,8 +26,6 @@
 
 """
 
-from __future__ import print_function
-
 import pickle
 import logging
 import sys

luigi/contrib/s3.py

@@ -20,8 +20,6 @@
 system operations. The `boto3` library is required to use S3 targets.
 """
 
-from __future__ import division
-
 import datetime
 import io
 import itertools

luigi/contrib/sparkey.py

@@ -15,8 +15,6 @@
 # limitations under the License.
 #
 
-from __future__ import absolute_import
-
 import luigi
 
 

luigi/contrib/webhdfs.py

@@ -23,8 +23,6 @@
 :class:`luigi.contrib.hdfs.webhdfs_client.WebHdfsClient`
 """
 
-from __future__ import absolute_import
-
 import logging
 
 from luigi.target import FileSystemTarget, AtomicLocalFile

luigi/date_interval.py

@@ -31,8 +31,6 @@ class MyTask(luigi.Task):
 ``--date-interval 2014`` (for a year) and some other notations.
 """
 
-from __future__ import division
-
 from luigi import six
 
 import datetime

luigi/lock.py

@@ -19,7 +19,6 @@
 Uses a pidfile.
 This prevents multiple identical workflows to be launched simultaneously.
 """
-from __future__ import print_function
 
 import errno
 import hashlib

luigi/process.py

@@ -17,7 +17,6 @@
 """
 Contains some helper functions to run luigid in daemon mode
 """
-from __future__ import print_function
 
 import datetime
 import logging

luigi/six.py

@@ -20,8 +20,6 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from __future__ import absolute_import
-
 import functools
 import itertools
 import operator

luigi/tools/deps.py

@@ -36,8 +36,6 @@
 # [--upstream-family MyUpstreamTask]
 #
 
-
-from __future__ import print_function
 import luigi.interface
 from luigi.contrib.ssh import RemoteTarget
 from luigi.contrib.postgres import PostgresTarget

test/cmdline_test.py

@@ -14,7 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-from __future__ import print_function
 
 import mock
 import os

test/contrib/s3_test.py

@@ -14,7 +14,6 @@
 # License for the specific language governing permissions and limitations under
 # the License.
 #
-from __future__ import print_function
 
 import os
 import sys

test/contrib/test_ssh.py

@@ -18,8 +18,6 @@
 Integration tests for ssh module.
 """
 
-from __future__ import print_function
-
 import os
 import random
 import socket

test/create_packages_archive_root/package/submodule_with_absolute_import.py

@@ -15,6 +15,4 @@
 # limitations under the License.
 #
 
-from __future__ import absolute_import
-
 import os  # NOQA

test/decorator_test.py

@@ -14,7 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-from __future__ import print_function
 
 import datetime
 import pickle

test/local_target_test.py

@@ -14,7 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-from __future__ import print_function
 
 import bz2
 import gzip

test/mock_test.py

@@ -14,7 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-from __future__ import print_function
 
 from helpers import unittest
 

test/recursion_test.py

@@ -14,7 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-from __future__ import print_function
 
 import datetime
 from helpers import unittest

test/scheduler_test.py

@@ -14,7 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-from __future__ import print_function
 
 import pickle
 import tempfile

test/scheduler_visualisation_test.py

@@ -14,7 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-from __future__ import division
 
 import os
 import tempfile

test/target_test.py

@@ -14,7 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-from __future__ import print_function
 
 from helpers import unittest, skipOnTravis
 from mock import Mock

test/task_serialize_test.py

@@ -25,8 +25,6 @@
 
 """
 
-from __future__ import print_function
-
 import string
 import luigi
 import json

test/visualiser/visualiser_test.py

@@ -3,8 +3,6 @@
 
 """
 
-from __future__ import print_function
-
 import os
 import luigi
 import subprocess

test/worker_keep_alive_test.py

@@ -14,7 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-from __future__ import print_function
 
 from helpers import LuigiTestCase
 from luigi.scheduler import Scheduler

test/worker_scheduler_com_test.py

@@ -15,8 +15,6 @@
 # limitations under the License.
 #
 
-from __future__ import print_function
-
 import os
 import time
 import threading

test/worker_test.py

@@ -14,7 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-from __future__ import print_function
 
 import email.parser
 import functools

test/wrap_test.py

@@ -14,7 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-from __future__ import print_function
 
 import datetime
 from helpers import unittest