Remove unused imports in tests (GH-14518)

Lib/test/libregrtest/main.py

@@ -587,7 +587,6 @@ class Regrtest:
 
     def cleanup(self):
         import glob
-        import shutil
 
         path = os.path.join(self.tmp_dir, 'test_python_*')
         print("Cleanup %s directory" % self.tmp_dir)

Lib/test/support/__init__.py

@@ -6,7 +6,6 @@ if __name__ != 'test.support':
 import asyncio.events
 import collections.abc
 import contextlib
-import datetime
 import errno
 import faulthandler
 import fnmatch
@@ -15,7 +14,6 @@ import gc
 import glob
 import importlib
 import importlib.util
-import io
 import logging.handlers
 import nntplib
 import os

Lib/test/test__xxsubinterpreters.py

@@ -4,7 +4,7 @@ import itertools
 import os
 import pickle
 import sys
-from textwrap import dedent, indent
+from textwrap import dedent
 import threading
 import time
 import unittest

Lib/test/test_argparse.py

@@ -1,6 +1,5 @@
 # Author: Steven J. Bethard <steven.bethard@gmail.com>.
 
-import codecs
 import inspect
 import os
 import shutil

Lib/test/test_asynchat.py

@@ -7,7 +7,6 @@ import asyncore
 import errno
 import socket
 import sys
-import _thread as thread
 import threading
 import time
 import unittest

Lib/test/test_asyncio/test_events.py

@@ -26,8 +26,6 @@ if sys.platform != 'win32':
     import tty
 
 import asyncio
-from asyncio import base_events
-from asyncio import constants
 from asyncio import coroutines
 from asyncio import events
 from asyncio import proactor_events

Lib/test/test_asyncio/test_pep492.py

@@ -4,7 +4,6 @@ import sys
 import types
 import unittest
 
-from test import support
 from unittest import mock
 
 import asyncio

Lib/test/test_asyncio/test_proactor_events.py

@@ -4,11 +4,9 @@ import io
 import socket
 import unittest
 import sys
-from collections import deque
 from unittest import mock
 
 import asyncio
-from asyncio import events
 from asyncio.proactor_events import BaseProactorEventLoop
 from asyncio.proactor_events import _ProactorSocketTransport
 from asyncio.proactor_events import _ProactorWritePipeTransport

Lib/test/test_asyncio/test_server.py

@@ -1,5 +1,4 @@
 import asyncio
-import socket
 import time
 import threading
 import unittest

Lib/test/test_asyncio/test_sslproto.py

@@ -15,7 +15,6 @@ import asyncio
 from asyncio import log
 from asyncio import protocols
 from asyncio import sslproto
-from asyncio import tasks
 from test.test_asyncio import utils as test_utils
 from test.test_asyncio import functional as func_tests
 

Lib/test/test_asyncio/test_unix_events.py

@@ -22,8 +22,6 @@ if sys.platform == 'win32':
 
 import asyncio
 from asyncio import log
-from asyncio import base_events
-from asyncio import events
 from asyncio import unix_events
 from test.test_asyncio import utils as test_utils
 

Lib/test/test_asyncio/test_windows_events.py

@@ -2,7 +2,6 @@ import os
 import signal
 import socket
 import sys
-import subprocess
 import time
 import threading
 import unittest
@@ -12,14 +11,12 @@ if sys.platform != 'win32':
     raise unittest.SkipTest('Windows only')
 
 import _overlapped
-import _testcapi
 import _winapi
 
 import asyncio
 from asyncio import windows_events
 from asyncio.streams import _StreamProtocol
 from test.test_asyncio import utils as test_utils
-from test.support.script_helper import spawn_python
 
 
 def tearDownModule():

Lib/test/test_audit.py

@@ -1,7 +1,6 @@
 """Tests for sys.audit and sys.addaudithook
 """
 
-import os
 import subprocess
 import sys
 import unittest

Lib/test/test_c_locale_coercion.py

@@ -2,7 +2,6 @@
 
 import locale
 import os
-import shutil
 import subprocess
 import sys
 import sysconfig
@@ -10,10 +9,8 @@ import unittest
 from collections import namedtuple
 
 from test import support
-from test.support.script_helper import (
+from test.support.script_helper import run_python_until_end
-    run_python_until_end,
+
-    interpreter_requires_environment,
-)
 
 # Set the list of ways we expect to be able to ask for the "C" locale
 EXPECTED_C_LOCALE_EQUIVALENTS = ["C", "invalid.ascii"]

Lib/test/test_capi.py

@@ -8,7 +8,6 @@ import random
 import re
 import subprocess
 import sys
-import sysconfig
 import textwrap
 import threading
 import time

Lib/test/test_cgi.py

@@ -1,4 +1,3 @@
-from test.support import check_warnings
 import cgi
 import os
 import sys

Lib/test/test_cmath.py

@@ -6,7 +6,7 @@ import cmath, math
 from cmath import phase, polar, rect, pi
 import platform
 import sys
-import sysconfig
+
 
 INF = float('inf')
 NAN = float('nan')

Lib/test/test_cmd_line.py

@@ -5,7 +5,6 @@
 import os
 import subprocess
 import sys
-import sysconfig
 import tempfile
 import unittest
 from test import support

Lib/test/test_codeccallbacks.py

@@ -1,10 +1,10 @@
 import codecs
 import html.entities
 import sys
-import test.support
 import unicodedata
 import unittest
 
+
 class PosReturn:
     # this can be used for configurable callbacks
 

Lib/test/test_codecs.py

@@ -29,7 +29,7 @@ def coding_checker(self, coder):
 
 # On small versions of Windows like Windows IoT or Windows Nano Server not all codepages are present
 def is_code_page_present(cp):
-    from ctypes import POINTER, WINFUNCTYPE, windll, WinError, Structure, WinDLL
+    from ctypes import POINTER, WINFUNCTYPE, WinDLL
     from ctypes.wintypes import BOOL, UINT, BYTE, WCHAR, UINT, DWORD
 
     MAX_LEADBYTES = 12  # 5 ranges, 2 bytes ea., 0 term.

Lib/test/test_collections.py

@@ -13,7 +13,7 @@ from test import support
 import types
 import unittest
 
-from collections import namedtuple, Counter, OrderedDict, _count_elements, _tuplegetter
+from collections import namedtuple, Counter, OrderedDict, _count_elements
 from collections import UserDict, UserString, UserList
 from collections import ChainMap
 from collections import deque

Lib/test/test_cprofile.py

@@ -6,7 +6,7 @@ import unittest
 # rip off all interesting stuff from test_profile
 import cProfile
 from test.test_profile import ProfileTest, regenerate_expected_output
-from test.support.script_helper import assert_python_failure, assert_python_ok
+from test.support.script_helper import assert_python_failure
 from test import support
 
 

Lib/test/test_docxmlrpc.py

@@ -2,7 +2,6 @@ from xmlrpc.server import DocXMLRPCServer
 import http.client
 import sys
 import threading
-from test import support
 import unittest
 
 def make_request_and_skipIf(condition, reason):

Lib/test/test_email/test_policy.py

@@ -1,5 +1,4 @@
 import io
-import sys
 import types
 import textwrap
 import unittest

Lib/test/test_embed.py

@@ -5,7 +5,6 @@ import unittest
 from collections import namedtuple
 import json
 import os
-import platform
 import re
 import subprocess
 import sys

Lib/test/test_exceptions.py

@@ -9,7 +9,7 @@ import weakref
 import errno
 
 from test.support import (TESTFN, captured_stderr, check_impl_detail,
-                          check_warnings, cpython_only, gc_collect, run_unittest,
+                          check_warnings, cpython_only, gc_collect,
                           no_tracing, unlink, import_module, script_helper,
                           SuppressCrashReport)
 from test import support

Lib/test/test_faulthandler.py

@@ -9,7 +9,6 @@ import sysconfig
 from test import support
 from test.support import script_helper, is_android
 import tempfile
-import threading
 import unittest
 from textwrap import dedent
 

Lib/test/test_fork1.py

@@ -10,8 +10,7 @@ import time
 import unittest
 
 from test.fork_wait import ForkWait
-from test.support import (reap_children, get_attribute,
+from test.support import reap_children, get_attribute, verbose
-                          import_module, verbose)
 
 
 # Skip test if fork does not exist.

Lib/test/test_generators.py

@@ -3,7 +3,6 @@ import gc
 import pickle
 import sys
 import unittest
-import warnings
 import weakref
 import inspect
 

Lib/test/test_gettext.py

@@ -2,7 +2,6 @@ import os
 import base64
 import contextlib
 import gettext
-import locale
 import unittest
 
 from test import support

Lib/test/test_imaplib.py

@@ -1,7 +1,6 @@
 from test import support
 
 from contextlib import contextmanager
-import errno
 import imaplib
 import os.path
 import socketserver

Lib/test/test_import/__init__.py

@@ -5,7 +5,6 @@ from importlib._bootstrap_external import _get_sourcefile
 import builtins
 import marshal
 import os
-import platform
 import py_compile
 import random
 import shutil
@@ -23,9 +22,9 @@ import glob
 
 import test.support
 from test.support import (
-    EnvironmentVarGuard, TESTFN, check_warnings, forget, is_jython,
+    TESTFN, forget, is_jython,
-    make_legacy_pyc, rmtree, run_unittest, swap_attr, swap_item, temp_umask,
+    make_legacy_pyc, rmtree, swap_attr, swap_item, temp_umask,
-    unlink, unload, create_empty_file, cpython_only, TESTFN_UNENCODABLE,
+    unlink, unload, cpython_only, TESTFN_UNENCODABLE,
     temp_dir, DirsOnSysPath)
 from test.support import script_helper
 from test.test_importlib.util import uncache

Lib/test/test_importlib/test_util.py

@@ -4,7 +4,6 @@ init = util.import_importlib('importlib')
 machinery = util.import_importlib('importlib.machinery')
 importlib_util = util.import_importlib('importlib.util')
 
-import contextlib
 import importlib.util
 import os
 import pathlib

Lib/test/test_locale.py

@@ -3,7 +3,7 @@ import unittest
 import locale
 import sys
 import codecs
-import warnings
+
 
 class BaseLocalizedTest(unittest.TestCase):
     #

Lib/test/test_math.py

@@ -12,7 +12,7 @@ import platform
 import random
 import struct
 import sys
-import sysconfig
+
 
 eps = 1E-05
 NAN = float('nan')

Lib/test/test_os.py

@@ -9,7 +9,6 @@ import contextlib
 import decimal
 import errno
 import fractions
-import getpass
 import itertools
 import locale
 import mmap

Lib/test/test_peepholer.py

@@ -1,10 +1,9 @@
 import dis
 import unittest
-import types
-import textwrap
 
 from test.bytecode_helper import BytecodeTestCase
 
+
 def count_instr_recursively(f, opname):
     count = 0
     for instr in dis.get_instructions(f):

Lib/test/test_picklebuffer.py

@@ -5,7 +5,6 @@ Pickling tests themselves are in pickletester.py.
 
 import gc
 from pickle import PickleBuffer
-import sys
 import weakref
 import unittest
 

Lib/test/test_platform.py

@@ -2,13 +2,12 @@ import os
 import platform
 import subprocess
 import sys
-import sysconfig
-import tempfile
 import unittest
 from unittest import mock
 
 from test import support
 
+
 class PlatformTest(unittest.TestCase):
     def clear_caches(self):
         platform._platform_cache.clear()

Lib/test/test_posixpath.py

@@ -1,7 +1,6 @@
 import os
 import posixpath
 import unittest
-import warnings
 from posixpath import realpath, abspath, dirname, basename
 from test import support, test_genericpath
 from test.support import FakePath
@@ -12,6 +11,7 @@ try:
 except ImportError:
     posix = None
 
+
 # An absolute path to a temporary filename for testing. We can't rely on TESTFN
 # being an absolute path, so we need this.
 

Lib/test/test_pyclbr.py

@@ -3,15 +3,13 @@
    Nick Mathewson
 '''
 
-import os
 import sys
 from textwrap import dedent
 from types import FunctionType, MethodType, BuiltinFunctionType
 import pyclbr
 from unittest import TestCase, main as unittest_main
-from test import support
 from test.test_importlib import util as test_importlib_util
-from functools import partial
+
 
 StaticMethodType = type(staticmethod(lambda: None))
 ClassMethodType = type(classmethod(lambda c: None))

Lib/test/test_pydoc.py

@@ -21,7 +21,6 @@ import urllib.parse
 import xml.etree
 import xml.etree.ElementTree
 import textwrap
-import threading
 from io import StringIO
 from collections import namedtuple
 from test.support.script_helper import assert_python_ok

Lib/test/test_runpy.py

@@ -11,8 +11,7 @@ import warnings
 from test.support import (
     forget, make_legacy_pyc, unload, verbose, no_tracing,
     create_empty_file, temp_dir)
-from test.support.script_helper import (
+from test.support.script_helper import make_script, make_zip_script
-    make_pkg, make_script, make_zip_pkg, make_zip_script)
 
 
 import runpy

Lib/test/test_signal.py

@@ -6,7 +6,6 @@ import socket
 import statistics
 import subprocess
 import sys
-import threading
 import time
 import unittest
 from test import support

Lib/test/test_smtplib.py

@@ -19,7 +19,7 @@ import threading
 
 import unittest
 from test import support, mock_socket
-from test.support import HOST, HOSTv4, HOSTv6
+from test.support import HOST
 from test.support import threading_setup, threading_cleanup, join_thread
 from unittest.mock import Mock
 

Lib/test/test_ssl.py

@@ -26,7 +26,7 @@ except ImportError:
 
 ssl = support.import_module("ssl")
 
-from ssl import TLSVersion, _TLSContentType, _TLSMessageType, _TLSAlertType
+from ssl import TLSVersion, _TLSContentType, _TLSMessageType
 
 Py_DEBUG = hasattr(sys, 'gettotalrefcount')
 Py_DEBUG_WIN32 = Py_DEBUG and sys.platform == 'win32'
@@ -4601,7 +4601,6 @@ class TestSSLDebug(unittest.TestCase):
 
 def test_main(verbose=False):
     if support.verbose:
-        import warnings
         plats = {
             'Mac': platform.mac_ver,
             'Windows': platform.win32_ver,

Lib/test/test_string_literals.py

@@ -31,7 +31,6 @@ import os
 import sys
 import shutil
 import tempfile
-import warnings
 import unittest
 
 

Lib/test/test_subprocess.py

@@ -3,7 +3,6 @@ from unittest import mock
 from test import support
 import subprocess
 import sys
-import platform
 import signal
 import io
 import itertools
@@ -20,18 +19,12 @@ import gc
 import textwrap
 from test.support import FakePath
 
-try:
-    import ctypes
-except ImportError:
-    ctypes = None
-else:
-    import ctypes.util
-
 try:
     import _testcapi
 except ImportError:
     _testcapi = None
 
+
 if support.PGO:
     raise unittest.SkipTest("test is not helpful for PGO")
 

Lib/test/test_sys.py

@@ -3,7 +3,6 @@ from test.support.script_helper import assert_python_ok, assert_python_failure
 import builtins
 import codecs
 import gc
-import io
 import locale
 import operator
 import os

Lib/test/test_tabnanny.py

@@ -7,7 +7,6 @@ from unittest import TestCase, mock
 from unittest import mock
 import errno
 import os
-import sys
 import tabnanny
 import tokenize
 import tempfile

Lib/test/test_threaded_import.py

@@ -15,7 +15,7 @@ import threading
 import unittest
 from unittest import mock
 from test.support import (
-    verbose, import_module, run_unittest, TESTFN, reap_threads,
+    verbose, run_unittest, TESTFN, reap_threads,
     forget, unlink, rmtree, start_threads)
 
 def task(N, done, done_tasks, errors):

Lib/test/test_threadedtempfile.py

@@ -13,19 +13,22 @@ quickly. Guido reports needing to boost FILES_PER_THREAD to 500 before
 provoking a 2.0 failure under Linux.
 """
 
-NUM_THREADS = 20
-FILES_PER_THREAD = 50
-
 import tempfile
 
-from test.support import start_threads, import_module
+from test.support import start_threads
 import unittest
 import io
 import threading
 from traceback import print_exc
 
+
+NUM_THREADS = 20
+FILES_PER_THREAD = 50
+
+
 startEvent = threading.Event()
 
+
 class TempFileGreedy(threading.Thread):
     error_count = 0
     ok_count = 0

Lib/test/test_zipfile.py

@@ -4,9 +4,7 @@ import io
 import os
 import pathlib
 import posixpath
-import shutil
 import struct
-import tempfile
 import time
 import unittest
 import zipfile