[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

doc/conf.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 #
 # documentation build configuration file, created by
 # sphinx-quickstart on Thu Jul 23 19:40:08 2015.

doc/sphinx_util.py

@@ -1,5 +1,5 @@
-# -*- coding: utf-8 -*-
 """Helper utilty function for customization."""
+
 import os
 import subprocess
 import sys

tracker/dmlc_tracker/__init__.py

@@ -1,3 +1,2 @@
 """DMLC Tracker modules for running jobs on different platforms."""
 
-from __future__ import absolute_import

tracker/dmlc_tracker/kubernetes.py

@@ -4,7 +4,7 @@
 
 One need to make sure kubectl-able.
 """
-from __future__ import absolute_import
+
 
 import yaml
 from kubernetes import client, config

tracker/dmlc_tracker/launcher.py

@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
 # pylint: disable=invalid-name
 """The container launcher script that launches DMLC with the right env variable."""
-from __future__ import absolute_import
+
 
 import glob
 import os
@@ -55,7 +55,7 @@ def main():
     if hadoop_home:
         library_path.append("%s/lib/native" % hdfs_home)
         library_path.append("%s/lib" % hdfs_home)
-        (classpath, _) = subprocess.Popen(
+        classpath, _ = subprocess.Popen(
             "%s/bin/hadoop classpath" % hadoop_home,
             stdout=subprocess.PIPE,
             shell=True,

tracker/dmlc_tracker/local.py

@@ -1,7 +1,6 @@
 """Submission job for local jobs."""
 
 # pylint: disable=invalid-name
-from __future__ import absolute_import
 
 import logging
 import os

tracker/dmlc_tracker/mesos.py

@@ -4,7 +4,7 @@
 
 One need to make sure all slaves machines are ssh-able.
 """
-from __future__ import absolute_import
+
 
 import json
 import logging

tracker/dmlc_tracker/mpi.py

@@ -3,7 +3,6 @@
 """
 
 # pylint: disable=invalid-name
-from __future__ import absolute_import
 
 import logging
 import subprocess
@@ -26,7 +25,7 @@ def get_mpi_env(envs):
         return cmd
 
     # decide MPI version.
-    (out, err) = subprocess.Popen(
+    out, err = subprocess.Popen(
         ["mpirun", "--version"], stdout=subprocess.PIPE, stderr=subprocess.PIPE
     ).communicate()
     if b"Open MPI" in out:

tracker/dmlc_tracker/opts.py

@@ -1,5 +1,6 @@
 # pylint: disable=invalid-name
 """Command line options of job submission script."""
+
 import argparse
 import os
 
@@ -317,7 +318,7 @@ def get_opts(args=None):
         type=int,
         help=("Number of attempt local tracker can restart slave."),
     )
-    (args, unknown) = parser.parse_known_args(args)
+    args, unknown = parser.parse_known_args(args)
     args.command += unknown
 
     if args.cluster is None:

tracker/dmlc_tracker/sge.py

@@ -1,7 +1,6 @@
 """Submit jobs to Sun Grid Engine."""
 
 # pylint: disable=invalid-name
-from __future__ import absolute_import
 
 import os
 import subprocess