MAINT: Remove implicit inheritance from object class (#15236)

Inheriting from object was necessary for Python 2 compatibility to use
new-style classes. In Python 3, this is unnecessary as there are no
old-style classes.

Dropping the object is more idiomatic Python.

7 files changed, 16 insertions, 16 deletions

diff --git a/numpy/distutils/tests/test_exec_command.py b/numpy/distutils/tests/test_exec_command.py
index 8c3a4516a..2ac0a6308 100644
--- a/numpy/distutils/tests/test_exec_command.py
+++ b/numpy/distutils/tests/test_exec_command.py
@@ -13,7 +13,7 @@ if sys.version_info[0] >= 3:
 else:
     from StringIO import StringIO
 
-class redirect_stdout(object):
+class redirect_stdout:
     """Context manager to redirect stdout for exec_command test."""
     def __init__(self, stdout=None):
         self._stdout = stdout or sys.stdout
@@ -28,7 +28,7 @@ class redirect_stdout(object):
         # note: closing sys.stdout won't close it.
         self._stdout.close()
 
-class redirect_stderr(object):
+class redirect_stderr:
     """Context manager to redirect stderr for exec_command test."""
     def __init__(self, stderr=None):
         self._stderr = stderr or sys.stderr
@@ -43,7 +43,7 @@ class redirect_stderr(object):
         # note: closing sys.stderr won't close it.
         self._stderr.close()
 
-class emulate_nonposix(object):
+class emulate_nonposix:
     """Context manager to emulate os.name != 'posix' """
     def __init__(self, osname='non-posix'):
         self._new_name = osname
@@ -96,7 +96,7 @@ def test_exec_command_stderr():
                         exec_command.exec_command("cd '.'")
 
 
-class TestExecCommand(object):
+class TestExecCommand:
     def setup(self):
         self.pyexe = get_pythonexe()
 
diff --git a/numpy/distutils/tests/test_fcompiler_gnu.py b/numpy/distutils/tests/test_fcompiler_gnu.py
index b7bba2f95..0817ae58c 100644
--- a/numpy/distutils/tests/test_fcompiler_gnu.py
+++ b/numpy/distutils/tests/test_fcompiler_gnu.py
@@ -28,7 +28,7 @@ gfortran_version_strings = [
     ('GNU Fortran (crosstool-NG 8a21ab48) 7.2.0', '7.2.0')
 ]
 
-class TestG77Versions(object):
+class TestG77Versions:
     def test_g77_version(self):
         fc = numpy.distutils.fcompiler.new_fcompiler(compiler='gnu')
         for vs, version in g77_version_strings:
@@ -41,7 +41,7 @@ class TestG77Versions(object):
             v = fc.version_match(vs)
             assert_(v is None, (vs, v))
 
-class TestGFortranVersions(object):
+class TestGFortranVersions:
     def test_gfortran_version(self):
         fc = numpy.distutils.fcompiler.new_fcompiler(compiler='gnu95')
         for vs, version in gfortran_version_strings:
diff --git a/numpy/distutils/tests/test_fcompiler_intel.py b/numpy/distutils/tests/test_fcompiler_intel.py
index 3bb81e027..45c9cdac1 100644
--- a/numpy/distutils/tests/test_fcompiler_intel.py
+++ b/numpy/distutils/tests/test_fcompiler_intel.py
@@ -14,7 +14,7 @@ intel_64bit_version_strings = [
      "running on Intel(R) 64, Version 11.1", '11.1')
 ]
 
-class TestIntelFCompilerVersions(object):
+class TestIntelFCompilerVersions:
     def test_32bit_version(self):
         fc = numpy.distutils.fcompiler.new_fcompiler(compiler='intel')
         for vs, version in intel_32bit_version_strings:
@@ -22,7 +22,7 @@ class TestIntelFCompilerVersions(object):
             assert_(v == version)
 
 
-class TestIntelEM64TFCompilerVersions(object):
+class TestIntelEM64TFCompilerVersions:
     def test_64bit_version(self):
         fc = numpy.distutils.fcompiler.new_fcompiler(compiler='intelem')
         for vs, version in intel_64bit_version_strings:
diff --git a/numpy/distutils/tests/test_fcompiler_nagfor.py b/numpy/distutils/tests/test_fcompiler_nagfor.py
index 785aeda14..2e04f5266 100644
--- a/numpy/distutils/tests/test_fcompiler_nagfor.py
+++ b/numpy/distutils/tests/test_fcompiler_nagfor.py
@@ -14,7 +14,7 @@ nag_version_strings = [('nagfor', 'NAG Fortran Compiler Release '
                         '431,435,437,446,459-460,463,472,494,496,503,508,'
                         '511,517,529,555,557,565)', '5.1')]
 
-class TestNagFCompilerVersions(object):
+class TestNagFCompilerVersions:
     def test_version_match(self):
         for comp, vs, version in nag_version_strings:
             fc = numpy.distutils.fcompiler.new_fcompiler(compiler=comp)
diff --git a/numpy/distutils/tests/test_misc_util.py b/numpy/distutils/tests/test_misc_util.py
index a584e0869..605c80483 100644
--- a/numpy/distutils/tests/test_misc_util.py
+++ b/numpy/distutils/tests/test_misc_util.py
@@ -9,7 +9,7 @@ from numpy.testing import (
 
 ajoin = lambda *paths: join(*((sep,)+paths))
 
-class TestAppendpath(object):
+class TestAppendpath:
 
     def test_1(self):
         assert_equal(appendpath('prefix', 'name'), join('prefix', 'name'))
@@ -33,7 +33,7 @@ class TestAppendpath(object):
         assert_equal(appendpath('/prefix/sub/sub2', '/prefix/sub/sup/name'),
                      ajoin('prefix', 'sub', 'sub2', 'sup', 'name'))
 
-class TestMinrelpath(object):
+class TestMinrelpath:
 
     def test_1(self):
         n = lambda path: path.replace('/', sep)
@@ -47,7 +47,7 @@ class TestMinrelpath(object):
         assert_equal(minrelpath(n('.././..')), n('../..'))
         assert_equal(minrelpath(n('aa/bb/.././../dd')), n('dd'))
 
-class TestGpaths(object):
+class TestGpaths:
 
     def test_gpaths(self):
         local_path = minrelpath(join(dirname(__file__), '..'))
@@ -56,7 +56,7 @@ class TestGpaths(object):
         f = gpaths('system_info.py', local_path)
         assert_(join(local_path, 'system_info.py') == f[0], repr(f))
 
-class TestSharedExtension(object):
+class TestSharedExtension:
 
     def test_get_shared_lib_extension(self):
         import sys
diff --git a/numpy/distutils/tests/test_npy_pkg_config.py b/numpy/distutils/tests/test_npy_pkg_config.py
index d202fce85..b287ebe2e 100644
--- a/numpy/distutils/tests/test_npy_pkg_config.py
+++ b/numpy/distutils/tests/test_npy_pkg_config.py
@@ -34,7 +34,7 @@ libs = -L${libdir}
 simple_variable_d = {'cflags': '-I/foo/bar/include', 'libflags': '-L/foo/bar/lib',
         'version': '0.1', 'name': 'foo'}
 
-class TestLibraryInfo(object):
+class TestLibraryInfo:
     def test_simple(self):
         with temppath('foo.ini') as path:
             with open(path,  'w') as f:
@@ -61,7 +61,7 @@ class TestLibraryInfo(object):
         out.vars['prefix'] = '/Users/david'
         assert_(out.cflags() == '-I/Users/david/include')
 
-class TestParseFlags(object):
+class TestParseFlags:
     def test_simple_cflags(self):
         d = parse_flags("-I/usr/include")
         assert_(d['include_dirs'] == ['/usr/include'])
diff --git a/numpy/distutils/tests/test_system_info.py b/numpy/distutils/tests/test_system_info.py
index 04f5f8320..c40cdb7db 100644
--- a/numpy/distutils/tests/test_system_info.py
+++ b/numpy/distutils/tests/test_system_info.py
@@ -128,7 +128,7 @@ class DuplicateOptionInfo(_system_info):
     section = 'duplicate_options'
 
 
-class TestSystemInfoReading(object):
+class TestSystemInfoReading:
 
     def setup(self):
         """ Create the libraries """