Use Python 3 syntax for new-style clasess

pkg_resources/__init__.py

@@ -78,6 +78,9 @@ __import__('pkg_resources.extern.packaging.requirements')
 __import__('pkg_resources.extern.packaging.markers')
 
 
+__metaclass__ = type
+
+
 if (3, 0) < sys.version_info < (3, 4):
     raise RuntimeError("Python 3.4 or later is required")
 
@@ -537,7 +540,7 @@ class IResourceProvider(IMetadataProvider):
         """List of resource names in the directory (like ``os.listdir()``)"""
 
 
-class WorkingSet(object):
+class WorkingSet:
     """A collection of active distributions on sys.path (or a similar list)"""
 
     def __init__(self, entries=None):
@@ -944,7 +947,7 @@ class _ReqExtras(dict):
         return not req.marker or any(extra_evals)
 
 
-class Environment(object):
+class Environment:
     """Searchable snapshot of distributions on a search path"""
 
     def __init__(
@@ -2279,7 +2282,7 @@ EGG_NAME = re.compile(
 ).match
 
 
-class EntryPoint(object):
+class EntryPoint:
     """Object representing an advertised importable object"""
 
     def __init__(self, name, module_name, attrs=(), extras=(), dist=None):
@@ -2433,7 +2436,7 @@ def _version_from_file(lines):
     return safe_version(value.strip()) or None
 
 
-class Distribution(object):
+class Distribution:
     """Wrap an actual or potential sys.path entry w/metadata"""
     PKG_INFO = 'PKG-INFO'
 

pkg_resources/tests/test_pkg_resources.py

@@ -23,6 +23,8 @@ try:
 except NameError:
     unicode = str
 
+__metaclass__ = type
+
 
 def timestamp(dt):
     """
@@ -43,7 +45,7 @@ class EggRemover(unicode):
             os.remove(self)
 
 
-class TestZipProvider(object):
+class TestZipProvider:
     finalizers = []
 
     ref_time = datetime.datetime(2013, 5, 12, 13, 25, 0)
@@ -132,7 +134,7 @@ class TestZipProvider(object):
         manager.cleanup_resources()
 
 
-class TestResourceManager(object):
+class TestResourceManager:
     def test_get_cache_path(self):
         mgr = pkg_resources.ResourceManager()
         path = mgr.get_cache_path('foo')
@@ -163,7 +165,7 @@ class TestIndependence:
         subprocess.check_call(cmd)
 
 
-class TestDeepVersionLookupDistutils(object):
+class TestDeepVersionLookupDistutils:
     @pytest.fixture
     def env(self, tmpdir):
         """

pkg_resources/tests/test_working_set.py

@@ -9,6 +9,8 @@ import pkg_resources
 
 from .test_resources import Metadata
 
+__metaclass__ = type
+
 
 def strip_comments(s):
     return '\n'.join(
@@ -54,7 +56,7 @@ def parse_distributions(s):
         yield dist
 
 
-class FakeInstaller(object):
+class FakeInstaller:
 
     def __init__(self, installable_dists):
         self._installable_dists = installable_dists

setuptools/__init__.py

@@ -15,6 +15,8 @@ from setuptools.dist import Distribution, Feature
 from setuptools.depends import Require
 from . import monkey
 
+__metaclass__ = type
+
 __all__ = [
     'setup', 'Distribution', 'Feature', 'Command', 'Extension', 'Require',
     'find_packages',
@@ -31,7 +33,7 @@ run_2to3_on_doctests = True
 lib2to3_fixer_packages = ['lib2to3.fixes']
 
 
-class PackageFinder(object):
+class PackageFinder:
     """
     Generate a list of all Python packages found within a directory
     """

setuptools/command/develop.py

@@ -12,6 +12,8 @@ from setuptools.command.easy_install import easy_install
 from setuptools import namespaces
 import setuptools
 
+__metaclass__ = type
+
 
 class develop(namespaces.DevelopInstaller, easy_install):
     """Set up package for development"""
@@ -192,7 +194,7 @@ class develop(namespaces.DevelopInstaller, easy_install):
         return easy_install.install_wrapper_scripts(self, dist)
 
 
-class VersionlessRequirement(object):
+class VersionlessRequirement:
     """
     Adapt a pkg_resources.Distribution to simply return the project
     name as the 'requirement' so that scripts will work across

setuptools/command/easy_install.py

@@ -63,6 +63,8 @@ from pkg_resources import (
 )
 import pkg_resources.py31compat
 
+__metaclass__ = type
+
 # Turn on PEP440Warnings
 warnings.filterwarnings("default", category=pkg_resources.PEP440Warning)
 
@@ -2050,7 +2052,7 @@ class WindowsCommandSpec(CommandSpec):
     split_args = dict(posix=False)
 
 
-class ScriptWriter(object):
+class ScriptWriter:
     """
     Encapsulates behavior around writing entry point scripts for console and
     gui apps.

setuptools/command/test.py

@@ -16,6 +16,8 @@ from pkg_resources import (resource_listdir, resource_exists, normalize_path,
                            add_activation_listener, require, EntryPoint)
 from setuptools import Command
 
+__metaclass__ = type
+
 
 class ScanningLoader(TestLoader):
 
@@ -58,7 +60,7 @@ class ScanningLoader(TestLoader):
 
 
 # adapted from jaraco.classes.properties:NonDataProperty
-class NonDataProperty(object):
+class NonDataProperty:
     def __init__(self, fget):
         self.fget = fget
 

setuptools/config.py

@@ -11,6 +11,9 @@ from setuptools.extern.packaging.version import LegacyVersion, parse
 from setuptools.extern.six import string_types
 
 
+__metaclass__ = type
+
+
 def read_configuration(
         filepath, find_others=False, ignore_option_errors=False):
     """Read given configuration file and returns options from it as a dict.
@@ -113,7 +116,7 @@ def parse_configuration(
     return meta, options
 
 
-class ConfigHandler(object):
+class ConfigHandler:
     """Handles metadata supplied in configuration files."""
 
     section_prefix = None

setuptools/package_index.py

@@ -26,6 +26,8 @@ from setuptools.py27compat import get_all_headers
 from setuptools.py33compat import unescape
 from setuptools.wheel import Wheel
 
+__metaclass__ = type
+
 EGG_FRAGMENT = re.compile(r'^egg=([-A-Za-z0-9_.+!]+)$')
 HREF = re.compile("""href\\s*=\\s*['"]?([^'"> ]+)""", re.I)
 # this is here to fix emacs' cruddy broken syntax highlighting
@@ -235,7 +237,7 @@ def find_external_links(url, page):
                 yield urllib.parse.urljoin(url, htmldecode(match.group(1)))
 
 
-class ContentChecker(object):
+class ContentChecker:
     """
     A null content checker that defines the interface for checking content
     """
@@ -980,7 +982,7 @@ def _encode_auth(auth):
     return encoded.replace('\n', '')
 
 
-class Credential(object):
+class Credential:
     """
     A username/password pair. Use like a namedtuple.
     """

setuptools/py31compat.py

 __all__ = []
 
+__metaclass__ = type
+
+
 try:
     # Python >=3.2
     from tempfile import TemporaryDirectory
@@ -7,7 +10,7 @@ except ImportError:
     import shutil
     import tempfile
 
-    class TemporaryDirectory(object):
+    class TemporaryDirectory:
         """
         Very simple temporary directory context manager.
         Will try to delete afterward, but will also ignore OS and similar

setuptools/py33compat.py

@@ -10,11 +10,12 @@ except ImportError:
 from setuptools.extern import six
 from setuptools.extern.six.moves import html_parser
 
+__metaclass__ = type
 
 OpArg = collections.namedtuple('OpArg', 'opcode arg')
 
 
-class Bytecode_compat(object):
+class Bytecode_compat:
     def __init__(self, code):
         self.code = code
 

setuptools/tests/test_build_meta.py

@@ -5,12 +5,14 @@ import pytest
 from .files import build_files
 from .textwrap import DALS
 
+__metaclass__ = type
+
 
 futures = pytest.importorskip('concurrent.futures')
 importlib = pytest.importorskip('importlib')
 
 
-class BuildBackendBase(object):
+class BuildBackendBase:
     def __init__(self, cwd=None, env={}, backend_name='setuptools.build_meta'):
         self.cwd = cwd
         self.env = env

setuptools/tests/test_easy_install.py

@@ -36,8 +36,10 @@ import pkg_resources
 from . import contexts
 from .textwrap import DALS
 
+__metaclass__ = type
 
-class FakeDist(object):
+
+class FakeDist:
     def get_entry_map(self, group):
         if group != 'console_scripts':
             return {}

setuptools/tests/test_egg_info.py

@@ -16,12 +16,14 @@ from .files import build_files
 from .textwrap import DALS
 from . import contexts
 
+__metaclass__ = type
+
 
 class Environment(str):
     pass
 
 
-class TestEggInfo(object):
+class TestEggInfo:
 
     setup_script = DALS("""
         from setuptools import setup
@@ -181,7 +183,7 @@ class TestEggInfo(object):
     )
     invalid_marker = "<=>++"
 
-    class RequiresTestHelper(object):
+    class RequiresTestHelper:
 
         @staticmethod
         def parametrize(*test_list, **format_dict):

setuptools/tests/test_glibc.py

@@ -4,6 +4,8 @@ import pytest
 
 from setuptools.glibc import check_glibc_version
 
+__metaclass__ = type
+
 
 @pytest.fixture(params=[
     "2.20",
@@ -23,7 +25,7 @@ def bad_string(request):
     return request.param
 
 
-class TestGlibc(object):
+class TestGlibc:
     def test_manylinux1_check_glibc_version(self, two_twenty):
         """
         Test that the check_glibc_version function is robust against weird

setuptools/tests/test_manifest.py

@@ -18,6 +18,8 @@ from setuptools.tests.textwrap import DALS
 
 import pytest
 
+__metaclass__ = type
+
 py3_only = pytest.mark.xfail(six.PY2, reason="Test runs on Python 3 only")
 
 
@@ -157,7 +159,7 @@ def test_translated_pattern_mismatch(pattern_mismatch):
     assert not translate_pattern(pattern).match(target)
 
 
-class TempDirTestCase(object):
+class TempDirTestCase:
     def setup_method(self, method):
         self.temp_dir = tempfile.mkdtemp()
         self.old_cwd = os.getcwd()

setuptools/tests/test_pep425tags.py

@@ -4,8 +4,10 @@ from mock import patch
 
 from setuptools import pep425tags
 
+__metaclass__ = type
 
-class TestPEP425Tags(object):
+
+class TestPEP425Tags:
 
     def mock_get_config_var(self, **kwd):
         """
@@ -104,7 +106,7 @@ class TestPEP425Tags(object):
         self.abi_tag_unicode('dm', {'Py_DEBUG': True, 'WITH_PYMALLOC': True})
 
 
-class TestManylinux1Tags(object):
+class TestManylinux1Tags:
 
     @patch('setuptools.pep425tags.get_platform', lambda: 'linux_x86_64')
     @patch('setuptools.glibc.have_compatible_glibc',

setuptools/tests/test_wheel.py

@@ -24,6 +24,8 @@ from .contexts import tempdir
 from .files import build_files
 from .textwrap import DALS
 
+__metaclass__ = type
+
 
 WHEEL_INFO_TESTS = (
     ('invalid.whl', ValueError),
@@ -148,7 +150,7 @@ def _check_wheel_install(filename, install_dir, install_tree_includes,
         assert requires_txt == dist.get_metadata('requires.txt').lstrip()
 
 
-class Record(object):
+class Record:
 
     def __init__(self, id, **kwargs):
         self._id = id

setuptools/wheel.py

@@ -16,6 +16,9 @@ from setuptools import pep425tags
 from setuptools.command.egg_info import write_requirements
 
 
+__metaclass__ = type
+
+
 WHEEL_NAME = re.compile(
     r"""^(?P<project_name>.+?)-(?P<version>\d.*?)
     ((-(?P<build>\d.*?))?-(?P<py_version>.+?)-(?P<abi>.+?)-(?P<platform>.+?)
@@ -52,7 +55,7 @@ def unpack(src_dir, dst_dir):
         os.rmdir(dirpath)
 
 
-class Wheel(object):
+class Wheel:
 
     def __init__(self, filename):
         match = WHEEL_NAME(os.path.basename(filename))