Issue #23277: Remove unused sys and os imports

Patch by Jon Dufresne.

Lib/ctypes/test/test_objects.py

@@ -54,7 +54,7 @@ of 'x' ('_b_base_' is either None, or the root object owning the memory block):
 
 '''
 
-import unittest, doctest, sys
+import unittest, doctest
 
 import ctypes.test.test_objects
 

Lib/ctypes/test/test_parameters.py

-import unittest, sys
+import unittest
 from ctypes.test import need_symbol
 
 class SimpleTypesTestCase(unittest.TestCase):

Lib/ctypes/test/test_returnfuncptrs.py

 import unittest
 from ctypes import *
-import os
 
 import _ctypes_test
 

Lib/ctypes/test/test_sizes.py

@@ -2,7 +2,6 @@
 
 from ctypes import *
 
-import sys
 import unittest
 
 

Lib/test/audiotests.py

@@ -3,7 +3,7 @@ import unittest
 import array
 import io
 import pickle
-import sys
+
 
 class UnseekableIO(io.FileIO):
     def tell(self):

Lib/test/make_ssl_certs.py

@@ -3,7 +3,6 @@ and friends."""
 
 import os
 import shutil
-import sys
 import tempfile
 from subprocess import *
 

Lib/test/test_aifc.py

@@ -2,7 +2,6 @@ from test.support import findfile, TESTFN, unlink
 import unittest
 from test import audiotests
 from audioop import byteswap
-import os
 import io
 import sys
 import struct

Lib/test/test_binhex.py

@@ -4,7 +4,6 @@
    Based on an original test by Roger E. Masse.
 """
 import binhex
-import os
 import unittest
 from test import support
 

Lib/test/test_csv.py

@@ -4,7 +4,6 @@
 import copy
 import io
 import sys
-import os
 import unittest
 from io import StringIO
 from tempfile import TemporaryFile

Lib/test/test_dbm.py

 """Test script for the dbm.open function based on testdumbdbm.py"""
 
-import os
 import unittest
 import glob
 import test.support

Lib/test/test_dbm_ndbm.py

 from test import support
 support.import_module("dbm.ndbm") #skip if not supported
 import unittest
-import os
 import random
 import dbm.ndbm
 from dbm.ndbm import error

Lib/test/test_devpoll.py

@@ -5,7 +5,6 @@
 import os
 import random
 import select
-import sys
 import unittest
 from test.support import TESTFN, run_unittest, cpython_only
 

Lib/test/test_eintr.py

 import os
 import signal
 import subprocess
-import sys
 import unittest
 
 from test import support

Lib/test/test_email/__init__.py

 import os
-import sys
 import unittest
 import collections
 import email

Lib/test/test_heapq.py

 """Unittests for heapq."""
 
-import sys
 import random
 import unittest
 

Lib/test/test_importlib/extension/test_case_sensitivity.py

 from importlib import _bootstrap_external
-import sys
 from test import support
 import unittest
 

Lib/test/test_importlib/extension/test_path_hook.py

@@ -3,7 +3,6 @@ from .. import util
 machinery = util.import_importlib('importlib.machinery')
 
 import collections
-import sys
 import unittest
 
 

Lib/test/test_importlib/frozen/test_loader.py

@@ -3,8 +3,6 @@ from .. import util
 
 machinery = util.import_importlib('importlib.machinery')
 
-
-import sys
 from test.support import captured_stdout
 import types
 import unittest

Lib/test/test_importlib/import_/test_relative_imports.py

 """Test relative imports (PEP 328)."""
 from .. import util
-import sys
 import unittest
 import warnings
 

Lib/test/test_importlib/source/test_case_sensitivity.py

@@ -5,7 +5,6 @@ importlib = util.import_importlib('importlib')
 machinery = util.import_importlib('importlib.machinery')
 
 import os
-import sys
 from test import support as test_support
 import unittest
 

Lib/test/test_json/__init__.py

 import os
-import sys
 import json
 import doctest
 import unittest

Lib/test/test_kqueue.py

@@ -5,7 +5,6 @@ import errno
 import os
 import select
 import socket
-import sys
 import time
 import unittest
 

Lib/test/test_msilib.py

 """ Test suite for the code in msilib """
 import unittest
-import os
 from test.support import import_module
 msilib = import_module('msilib')
 

Lib/test/test_multibytecodec.py

@@ -5,7 +5,7 @@
 
 from test import support
 from test.support import TESTFN
-import unittest, io, codecs, sys, os
+import unittest, io, codecs, sys
 import _multibytecodec
 
 ALL_CJKENCODINGS = [

Lib/test/test_nis.py

 from test import support
 import unittest
-import sys
 
 # Skip test if nis module does not exist.
 nis = support.import_module('nis')

Lib/test/test_normalization.py

@@ -3,7 +3,6 @@ import unittest
 
 from http.client import HTTPException
 import sys
-import os
 from unicodedata import normalize, unidata_version
 
 TESTDATAFILE = "NormalizationTest.txt"

Lib/test/test_parser.py

 import parser
 import unittest
-import sys
 import operator
 import struct
 from test import support

Lib/test/test_pep3151.py

@@ -2,7 +2,6 @@ import builtins
 import os
 import select
 import socket
-import sys
 import unittest
 import errno
 from errno import EEXIST

Lib/test/test_posixpath.py

 import itertools
 import os
 import posixpath
-import sys
 import unittest
 import warnings
 from posixpath import realpath, abspath, dirname, basename

Lib/test/test_pulldom.py

 import io
 import unittest
-import sys
 import xml.sax
 
 from xml.sax.xmlreader import AttributesImpl

Lib/test/test_quopri.py

 import unittest
 
-import sys, os, io, subprocess
+import sys, io, subprocess
 import quopri
 
 

Lib/test/test_sort.py

 from test import support
 import random
-import sys
 import unittest
 from functools import cmp_to_key
 

Lib/test/test_strptime.py

@@ -5,7 +5,6 @@ import time
 import locale
 import re
 import os
-import sys
 from test import support
 from datetime import date as datetime_date
 

Lib/test/test_tools/test_md5sum.py

 """Tests for the md5sum script in the Tools directory."""
 
 import os
-import sys
 import unittest
 from test import support
 from test.support.script_helper import assert_python_ok, assert_python_failure

Lib/test/test_tools/test_pdeps.py

 """Tests for the pdeps script in the Tools directory."""
 
 import os
-import sys
 import unittest
 import tempfile
 from test import support

Lib/test/test_ttk_guionly.py

-import os
 import unittest
 from test import support
 

Lib/test/test_ttk_textonly.py

-import os
 from test import support
 
 # Skip this test if _tkinter does not exist.

Lib/test/test_unpack_ex.py

@@ -352,7 +352,6 @@ Some size constraints (all fail.)
 __test__ = {'doctests' : doctests}
 
 def test_main(verbose=False):
-    import sys
     from test import support
     from test import test_unpack_ex
     support.run_doctest(test_unpack_ex, verbose)

Lib/test/test_urllibnet.py

@@ -4,7 +4,6 @@ from test import support
 import contextlib
 import socket
 import urllib.request
-import sys
 import os
 import email.message
 import time

Lib/test/test_weakset.py

@@ -3,9 +3,7 @@ from weakref import proxy, ref, WeakSet
 import operator
 import copy
 import string
-import os
 from random import randrange, shuffle
-import sys
 import warnings
 import collections
 from collections import UserString as ustr

Lib/test/test_xml_etree_c.py

 # xml.etree test for cElementTree
-import sys, struct
+import struct
 from test import support
 from test.support import import_fresh_module
 import types

Lib/test/test_xmlrpc_net.py

 import collections.abc
 import errno
 import socket
-import sys
 import unittest
 from test import support
 

Lib/test/test_zipfile.py

 import contextlib
 import io
 import os
-import sys
 import importlib.util
 import posixpath
 import time

Lib/tkinter/test/runtktests.py

@@ -7,7 +7,6 @@ Extensions also should live in packages following the same rule as above.
 """
 
 import os
-import sys
 import unittest
 import importlib
 import test.support

Lib/unittest/test/testmock/support.py

-import sys
-
 def is_instance(obj, klass):
     """Version of is_instance that doesn't access __class__"""
     return issubclass(type(obj), klass)