Port task (pantsbuild#6200)

src/python/pants/task/goal_options_mixin.py

@@ -4,6 +4,8 @@
 
 from __future__ import absolute_import, division, print_function, unicode_literals
 
+from builtins import object
+
 from pants.option.optionable import Optionable
 from pants.option.scope import ScopeInfo
 

src/python/pants/task/mutex_task_mixin.py

@@ -5,6 +5,7 @@
 from __future__ import absolute_import, division, print_function, unicode_literals
 
 from abc import abstractmethod
+from builtins import filter
 from collections import defaultdict
 
 from pants.base.exceptions import TaskError

src/python/pants/task/scm_publish_mixin.py

@@ -7,6 +7,7 @@
 import re
 import traceback
 from abc import abstractmethod
+from builtins import object, range
 
 from pants.base.exceptions import TaskError
 from pants.scm.scm import Scm

src/python/pants/task/simple_codegen_task.py

@@ -7,6 +7,7 @@
 import logging
 import os
 from abc import abstractmethod
+from builtins import zip
 from collections import OrderedDict
 
 from future.utils import text_type

src/python/pants/task/target_restriction_mixins.py

@@ -4,6 +4,8 @@
 
 from __future__ import absolute_import, division, print_function, unicode_literals
 
+from builtins import object
+
 from pants.task.goal_options_mixin import GoalOptionsMixin, GoalOptionsRegistrar
 
 

src/python/pants/task/task.py

@@ -7,6 +7,7 @@
 import os
 import sys
 from abc import abstractmethod
+from builtins import filter, map, object, str, zip
 from contextlib import contextmanager
 from hashlib import sha1
 from itertools import repeat
@@ -231,7 +232,7 @@ def get_targets(self, predicate=None):
     :API: public
     """
     return (self.context.targets(predicate) if self.act_transitively
-            else filter(predicate, self.context.target_roots))
+            else list(filter(predicate, self.context.target_roots)))
 
   @memoized_property
   def workdir(self):

src/python/pants/task/testrunner_task_mixin.py

@@ -8,6 +8,7 @@
 import re
 import xml.etree.ElementTree as ET
 from abc import abstractmethod
+from builtins import filter, next, object, str
 
 from pants.base.exceptions import ErrorWhileTesting, TaskError
 from pants.build_graph.files import Files

tests/python/pants_test/task/BUILD

@@ -5,6 +5,7 @@ python_tests(
   name = 'console_task',
   sources = ['test_console_task.py'],
   dependencies = [
+    '3rdparty/python:future',
     'src/python/pants/task',
     'tests/python/pants_test:task_test_base',
   ]
@@ -35,6 +36,7 @@ python_tests(
   name = 'simple_codegen_task',
   sources = ['test_simple_codegen_task.py'],
   dependencies = [
+    '3rdparty/python:future',
     'src/python/pants/base:payload',
     'src/python/pants/build_graph',
     'src/python/pants/task',
@@ -57,6 +59,7 @@ python_tests(
 python_tests(
   sources=['test_task.py'],
   dependencies=[
+    '3rdparty/python:future',
     'src/python/pants/base:build_environment',
     'src/python/pants/base:exceptions',
     'src/python/pants/build_graph',
@@ -71,6 +74,7 @@ python_tests(
   name='testrunner_task_mixin',
   sources=['test_testrunner_task_mixin.py'],
   dependencies=[
+    '3rdparty/python:future',
     '3rdparty/python:mock',
     'src/python/pants/task',
     'src/python/pants/util:process_handler',

tests/python/pants_test/task/test_console_task.py

@@ -6,7 +6,7 @@
 
 import os
 import threading
-from Queue import Empty, Queue
+from queue import Empty, Queue
 
 from pants.task.console_task import ConsoleTask
 from pants_test.task_test_base import TaskTestBase

tests/python/pants_test/task/test_simple_codegen_task.py

@@ -5,6 +5,7 @@
 from __future__ import absolute_import, division, print_function, unicode_literals
 
 import os
+from builtins import str
 from textwrap import dedent
 
 from pants.base.payload import Payload

tests/python/pants_test/task/test_task.py

@@ -5,6 +5,7 @@
 from __future__ import absolute_import, division, print_function, unicode_literals
 
 import os
+from builtins import str
 
 from pants.base.build_environment import get_buildroot
 from pants.base.exceptions import TaskError

tests/python/pants_test/task/test_testrunner_task_mixin.py

@@ -6,6 +6,7 @@
 
 import collections
 import os
+from builtins import next, object
 from contextlib import contextmanager
 from unittest import TestCase
 from xml.etree.ElementTree import ParseError