Drop code that explicitly supported python 2.

Tested with `green green` with python 3.6 (some of the test code uses f-strings so we cannot test with python 3.5).

green/__init__.py

@@ -1,4 +1,3 @@
-from __future__ import unicode_literals
 from .version import __version__
 
 __version__

green/__main__.py

@@ -1,5 +1,3 @@
-from __future__ import absolute_import
-
 import sys
 
 from .cmdline import main

green/cmdline.py

@@ -1,4 +1,3 @@
-from __future__ import unicode_literals
 import os
 import sys
 import tempfile

green/command.py

@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-from __future__ import print_function
-
 import sys
 
 try:

green/config.py

@@ -1,6 +1,3 @@
-from __future__ import unicode_literals  # pragma: no cover
-from __future__ import print_function  # pragma: no cover
-
 # We have to use this entire file before we can turn coverage on, so we exclude
 # it from coverage.  We still have tests, though!
 

green/djangorunner.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 """
 To try running Django tests using green you can run:
 

green/examples.py

@@ -1,4 +1,3 @@
-from __future__ import unicode_literals
 import sys
 import unittest
 

green/exceptions.py

@@ -1,5 +1,2 @@
-from __future__ import unicode_literals
-
-
 class InitializerOrFinalizerError(Exception):
     pass

green/junit.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from lxml.etree import Element, SubElement, tostring as to_xml
 
 

green/loader.py

@@ -1,4 +1,3 @@
-from __future__ import unicode_literals
 from collections import OrderedDict
 from doctest import DocTestCase, DocTestSuite
 from fnmatch import fnmatch

green/output.py

@@ -1,4 +1,3 @@
-from __future__ import unicode_literals
 from colorama import init, deinit, Fore, Style
 from colorama.ansi import Cursor
 from colorama.initialise import wrap_stream
@@ -12,11 +11,8 @@
 global debug_level
 debug_level = 0
 
-if sys.version_info[0] == 3:  # pragma: no cover
-    text_type = str
-    unicode = None  # so pyflakes stops complaining
-else:  # pragma: no cover
-    text_type = unicode
+text_type = str
+unicode = None  # so pyflakes stops complaining
 
 
 def debug(message, level=1):

green/process.py

@@ -1,4 +1,3 @@
-from __future__ import unicode_literals
 import logging
 import multiprocessing
 from multiprocessing.pool import Pool, RUN, TERMINATE
@@ -219,36 +218,9 @@ def _repopulate_pool_static(
 if tuple(map(int, platform.python_version_tuple()[:2])) < (3, 8):  # pragma: no cover
     LoggingDaemonlessPool = LoggingDaemonlessPool37
 
-import platform
 import multiprocessing.pool
 from multiprocessing import util
-
-try:
-    from multiprocessing.pool import MaybeEncodingError
-except:  # pragma: no cover
-    # Python 2.7.4 introduced this class.  If we're on Python 2.7.0 to 2.7.3
-    # then we'll have to define it ourselves. :-/
-    class MaybeEncodingError(Exception):
-        """Wraps possible unpickleable errors, so they can be
-        safely sent through the socket."""
-
-        def __init__(self, exc, value):
-            self.exc = repr(exc)
-            self.value = repr(value)
-            super(MaybeEncodingError, self).__init__(self.exc, self.value)
-
-        def __str__(self):
-            return "Error sending result: '%s'. Reason: '%s'" % (self.value, self.exc)
-
-        def __repr__(self):
-            return "<MaybeEncodingError: %s>" % str(self)
-
-
-# Python 2 and 3 raise a different error when they exit
-if platform.python_version_tuple()[0] == "2":  # pragma: no cover
-    PortableOSError = IOError
-else:  # pragma: no cover
-    PortableOSError = OSError
+from multiprocessing.pool import MaybeEncodingError
 
 
 def worker(
@@ -278,7 +250,7 @@ def worker(
     while maxtasks is None or (maxtasks and completed < maxtasks):
         try:
             task = get()
-        except (EOFError, PortableOSError):
+        except (EOFError, OSError):
             util.debug("worker got EOFError or OSError -- exiting")
             break
 

green/result.py

@@ -1,10 +1,8 @@
-from __future__ import unicode_literals
-from __future__ import print_function
-
 from collections import OrderedDict
 from doctest import DocTestCase
 from io import StringIO
 from math import ceil
+from shutil import get_terminal_size
 import sys
 import time
 import traceback
@@ -14,11 +12,6 @@
 from green.output import Colors, debug
 from green.version import pretty_version
 
-# introduced in Python 3
-try:
-    from shutil import get_terminal_size
-except ImportError:  # pragma: no cover
-    from backports.shutil_get_terminal_size import get_terminal_size
 
 terminal_width, _ignored = get_terminal_size()
 

green/runner.py

@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-from __future__ import print_function
-
 import multiprocessing
 from sys import modules
 from unittest.signals import registerResult, installHandler, removeResult

green/suite.py

@@ -1,6 +1,3 @@
-from __future__ import unicode_literals
-from __future__ import print_function
-
 from fnmatch import fnmatch
 import sys
 from unittest.suite import _call_if_exists, _DebugResult, _isnotsuite, TestSuite

green/test/test_cmdline.py

@@ -1,4 +1,3 @@
-from __future__ import unicode_literals
 from io import StringIO
 import logging
 import os
@@ -7,16 +6,12 @@
 import sys
 import tempfile
 import unittest
+from unittest.mock import MagicMock
 
 from green import cmdline
 from green import config
 from green.output import GreenStream
 
-try:
-    from unittest.mock import MagicMock
-except:
-    from mock import MagicMock
-
 
 class TestMain(unittest.TestCase):
     def setUp(self):

green/test/test_command.py

@@ -1,19 +1,14 @@
-from __future__ import unicode_literals
-
 import argparse
 import contextlib
 import sys
 import unittest
+from unittest.mock import patch, MagicMock, call
 
 try:
     from setuptools.dist import Distribution
 except ImportError:
     from distutil.dist import Distribution
 
-try:
-    from mock import patch, MagicMock, call
-except:
-    from unittest.mock import patch, MagicMock, call
 
 from green import command
 from green.config import StoreOpt

green/test/test_config.py

@@ -1,7 +1,4 @@
-try:
-    import configparser
-except:
-    import ConfigParser as configparser
+import configparser
 import copy
 from io import StringIO
 import os

green/test/test_djangorunner.py

@@ -1,14 +1,9 @@
-from __future__ import unicode_literals
 from argparse import Namespace
 from argparse import ArgumentParser
 from io import StringIO
 import sys
 import unittest
-
-try:
-    from unittest.mock import MagicMock, patch
-except:
-    from mock import MagicMock, patch
+from unittest.mock import MagicMock, patch
 
 from green import djangorunner
 from green.config import mergeConfig

green/test/test_integration.py

@@ -7,11 +7,7 @@
 import tempfile
 from textwrap import dedent
 import unittest
-
-try:
-    from unittest.mock import MagicMock
-except:
-    from mock import MagicMock
+from unittest.mock import MagicMock
 
 from green import cmdline
 

green/test/test_junit.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from green.config import default_args
 from green.output import GreenStream
 from green.junit import JUnitXML, JUnitDialect, Verdict

green/test/test_load_tests.py

@@ -1,16 +1,10 @@
-from __future__ import unicode_literals
-
 import os
+from queue import Queue, Empty
 import shutil
 import tempfile
 import unittest
 import textwrap
 
-try:
-    from Queue import Queue, Empty
-except ImportError:
-    from queue import Queue, Empty
-
 from green.loader import GreenTestLoader
 from green.process import poolRunner
 from green import process

green/test/test_loader.py

@@ -1,4 +1,3 @@
-from __future__ import unicode_literals
 import os
 from os.path import dirname
 import platform
@@ -7,11 +6,7 @@
 import tempfile
 from textwrap import dedent
 import unittest
-
-try:
-    from unittest.mock import MagicMock, patch
-except:
-    from mock import MagicMock, patch
+from unittest.mock import MagicMock, patch
 
 from green import loader
 from green.loader import GreenTestLoader, flattenTestSuite

green/test/test_output.py

@@ -1,14 +1,8 @@
-from __future__ import unicode_literals
 from io import StringIO
 import platform
 import sys
 import unittest
-
-
-try:
-    from unittest.mock import MagicMock, patch
-except:
-    from mock import MagicMock, patch
+from unittest.mock import MagicMock, patch
 
 from green.output import Colors, GreenStream, debug
 import green.output

green/test/test_process.py

@@ -1,23 +1,16 @@
 from ctypes import c_double
 import os
 import multiprocessing
+from queue import Queue, Empty
 import shutil
 import tempfile
 from textwrap import dedent
 import unittest
-
-try:
-    from unittest.mock import MagicMock
-except:
-    from mock import MagicMock
+from unittest.mock import MagicMock
 
 from green.process import ProcessLogger, poolRunner
 from green import process
 
-try:
-    from Queue import Queue, Empty
-except:
-    from queue import Queue, Empty
 
 
 class TestProcessLogger(unittest.TestCase):

green/test/test_result.py

@@ -1,5 +1,4 @@
 # encoding: utf-8
-from __future__ import unicode_literals
 import copy
 
 # `from doctest import DocTestCase` causes crashes, since the DocTestCase is
@@ -11,6 +10,7 @@
 import sys
 import os
 import unittest
+from unittest.mock import MagicMock, patch
 import tempfile
 
 from green.config import default_args
@@ -24,11 +24,6 @@
     BaseTestResult,
 )
 
-try:
-    from unittest.mock import MagicMock, patch
-except ImportError:
-    from mock import MagicMock, patch
-
 from coverage import coverage, CoverageException
 
 

green/test/test_runner.py

@@ -1,4 +1,3 @@
-from __future__ import unicode_literals
 import copy
 from io import StringIO
 import os
@@ -9,6 +8,7 @@
 import tempfile
 from textwrap import dedent
 import unittest
+from unittest.mock import MagicMock
 import weakref
 
 from green.config import default_args
@@ -18,11 +18,6 @@
 from green.runner import InitializerOrFinalizer, run
 from green.suite import GreenTestSuite
 
-try:
-    from unittest.mock import MagicMock
-except:
-    from mock import MagicMock
-
 
 global skip_testtools
 skip_testtools = False