gh-102515: Remove unused imports in the `Lib/` directory (#102516)

Lib/_pylong.py

@@ -12,7 +12,6 @@ integers with a huge number of digits.  Saving a few microseconds with
 tricky or non-obvious code is not worth it.  For people looking for
 maximum performance, they should use something like gmpy2."""
 
-import sys
 import re
 import decimal
 

Lib/concurrent/futures/process.py

@@ -49,6 +49,8 @@ import os
 from concurrent.futures import _base
 import queue
 import multiprocessing as mp
+# This import is required to load the multiprocessing.connection submodule
+# so that it can be accessed later as `mp.connection`
 import multiprocessing.connection
 from multiprocessing.queues import Queue
 import threading

Lib/dataclasses.py

@@ -4,7 +4,6 @@ import copy
 import types
 import inspect
 import keyword
-import builtins
 import functools
 import itertools
 import abc

Lib/importlib/_abc.py

@@ -1,7 +1,6 @@
 """Subset of importlib.abc used to reduce importlib.util imports."""
 from . import _bootstrap
 import abc
-import warnings
 
 
 class Loader(metaclass=abc.ABCMeta):

Lib/sysconfig.py

@@ -3,7 +3,7 @@
 import os
 import sys
 import threading
-from os.path import pardir, realpath
+from os.path import realpath
 
 __all__ = [
     'get_config_h_filename',

Lib/test/_test_venv_multiprocessing.py

@@ -1,7 +1,6 @@
 import multiprocessing
 import random
 import sys
-import time
 
 def fill_queue(queue, code):
     queue.put(code)

Lib/test/fork_wait.py

@@ -9,7 +9,7 @@ On some systems (e.g. Solaris without posix threads) we find that all
 active threads survive in the child after a fork(); this is an error.
 """
 
-import os, sys, time, unittest
+import os, time, unittest
 import threading
 from test import support
 from test.support import threading_helper

Lib/test/test__xxinterpchannels.py

@@ -1,6 +1,5 @@
 from collections import namedtuple
 import contextlib
-import os
 import sys
 from textwrap import dedent
 import threading

Lib/test/test__xxsubinterpreters.py

@@ -1,4 +1,3 @@
-from collections import namedtuple
 import contextlib
 import itertools
 import os
@@ -6,7 +5,6 @@ import pickle
 import sys
 from textwrap import dedent
 import threading
-import time
 import unittest
 
 import _testcapi

Lib/test/test_asyncgen.py

@@ -2,7 +2,6 @@ import inspect
 import types
 import unittest
 import contextlib
-import warnings
 
 from test.support.import_helper import import_module
 from test.support import gc_collect, requires_working_socket

Lib/test/test_asyncio/test_ssl.py

@@ -1,5 +1,4 @@
 import asyncio
-import asyncio.sslproto
 import contextlib
 import gc
 import logging

Lib/test/test_asyncio/test_subprocess.py

@@ -1,5 +1,4 @@
 import os
-import shutil
 import signal
 import sys
 import unittest

Lib/test/test_ctypes/test_callbacks.py

@@ -1,4 +1,3 @@
-import sys
 import functools
 import unittest
 from test import support

Lib/test/test_dataclasses.py

@@ -2261,7 +2261,6 @@ class TestInit(unittest.TestCase):
         class B:
             def __init__(self):
                 self.z = 100
-                pass
 
         # Make sure that declaring this class doesn't raise an error.
         #  The issue is that we can't override __init__ in our class,

Lib/test/test_enum.py

@@ -20,7 +20,6 @@ from pickle import dumps, loads, PicklingError, HIGHEST_PROTOCOL
 from test import support
 from test.support import ALWAYS_EQ
 from test.support import threading_helper
-from textwrap import dedent
 from datetime import timedelta
 
 python_version = sys.version_info[:2]
@@ -1187,7 +1186,6 @@ class TestSpecial(unittest.TestCase):
         #
         class SillyInt(HexInt):
             __qualname__ = 'SillyInt'
-            pass
         class MyOtherEnum(SillyInt, enum.Enum):
             __qualname__ = 'MyOtherEnum'
             D = 4

Lib/test/test_grammar.py

@@ -3,7 +3,6 @@
 
 from test.support import check_syntax_error
 from test.support import import_helper
-from test.support.warnings_helper import check_syntax_warning
 import inspect
 import unittest
 import sys
@@ -15,7 +14,6 @@ from sys import *
 # with import machinery
 import test.ann_module as ann_module
 import typing
-from collections import ChainMap
 from test import ann_module2
 import test
 

Lib/test/test_hashlib.py

@@ -22,7 +22,6 @@ from test.support.import_helper import import_fresh_module
 from test.support import os_helper
 from test.support import requires_resource
 from test.support import threading_helper
-from test.support import warnings_helper
 from http.client import HTTPException
 
 

Lib/test/test_httplib.py

@@ -8,7 +8,6 @@ import array
 import re
 import socket
 import threading
-import warnings
 
 import unittest
 from unittest import mock
@@ -17,7 +16,6 @@ TestCase = unittest.TestCase
 from test import support
 from test.support import os_helper
 from test.support import socket_helper
-from test.support import warnings_helper
 
 support.requires_working_socket(module=True)
 

Lib/test/test_imaplib.py

@@ -13,7 +13,6 @@ import socket
 from test.support import verbose, run_with_tz, run_with_locale, cpython_only
 from test.support import hashlib_helper
 from test.support import threading_helper
-from test.support import warnings_helper
 import unittest
 from unittest import mock
 from datetime import datetime, timezone, timedelta
@@ -751,7 +750,6 @@ class ThreadedNetworkedTests(unittest.TestCase):
                 typ, data = client.login('user', 'pass')
                 self.assertEqual(typ, 'OK')
                 client.enable('UTF8=ACCEPT')
-                pass
 
     @threading_helper.reap_threads
     def test_enable_UTF8_True_append(self):

Lib/test/test_isinstance.py

@@ -3,7 +3,6 @@
 # testing of error conditions uncovered when using extension types.
 
 import unittest
-import sys
 import typing
 from test import support
 

Lib/test/test_minidom.py

@@ -6,7 +6,6 @@ import io
 from test import support
 import unittest
 
-import pyexpat
 import xml.dom.minidom
 
 from xml.dom.minidom import parse, Attr, Node, Document, parseString

Lib/test/test_peg_generator/test_c_parser.py

@@ -24,7 +24,6 @@ with test_tools.imports_under_tool("peg_generator"):
         generate_parser_c_extension,
         generate_c_parser_source,
     )
-    from pegen.ast_dump import ast_dump
 
 
 TEST_TEMPLATE = """

Lib/test/test_shlex.py

@@ -3,7 +3,6 @@ import itertools
 import shlex
 import string
 import unittest
-from unittest import mock
 
 
 # The original test data set was from shellwords, by Hartmut Goebel.

Lib/test/test_sys_setprofile.py

@@ -2,7 +2,6 @@ import gc
 import pprint
 import sys
 import unittest
-from test import support
 
 
 class TestGetProfile(unittest.TestCase):

Lib/test/test_sys_settrace.py

@@ -2,7 +2,6 @@
 
 from test import support
 import unittest
-from unittest.mock import MagicMock
 import sys
 import difflib
 import gc

Lib/test/test_tkinter/test_widgets.py

@@ -9,8 +9,7 @@ from test.test_tkinter.support import (requires_tcl,
                                   AbstractDefaultRootTest)
 from test.test_tkinter.widget_tests import (
     add_standard_options,
-    AbstractWidgetTest, StandardOptionsTests, IntegerSizeTests, PixelSizeTests,
-    setUpModule)
+    AbstractWidgetTest, StandardOptionsTests, IntegerSizeTests, PixelSizeTests)
 
 requires('gui')
 

Lib/test/test_tools/test_sundry.py

@@ -6,7 +6,6 @@ tests of their own.
 """
 
 import os
-import sys
 import unittest
 from test.support import import_helper
 

Lib/test/test_traceback.py

@@ -6,7 +6,6 @@ import linecache
 import sys
 import types
 import inspect
-import importlib
 import builtins
 import unittest
 import re

Lib/test/test_ttk/test_widgets.py

@@ -8,8 +8,7 @@ from test.test_ttk_textonly import MockTclObj
 from test.test_tkinter.support import (AbstractTkTest, tcl_version, get_tk_patchlevel,
                                   simulate_mouse_click, AbstractDefaultRootTest)
 from test.test_tkinter.widget_tests import (add_standard_options,
-    AbstractWidgetTest, StandardOptionsTests, IntegerSizeTests, PixelSizeTests,
-    setUpModule)
+    AbstractWidgetTest, StandardOptionsTests, IntegerSizeTests, PixelSizeTests)
 
 requires('gui')
 
@@ -50,7 +49,6 @@ class StandardTtkOptionsTests(StandardOptionsTests):
         widget2 = self.create(class_='Foo')
         self.assertEqual(widget2['class'], 'Foo')
         # XXX
-        pass
 
 
 class WidgetTest(AbstractTkTest, unittest.TestCase):

Lib/test/test_unicodedata.py

@@ -12,8 +12,7 @@ import sys
 import unicodedata
 import unittest
 from test.support import (open_urlresource, requires_resource, script_helper,
-                          cpython_only, check_disallow_instantiation,
-                          ResourceDenied)
+                          cpython_only, check_disallow_instantiation)
 
 
 class UnicodeMethodsTest(unittest.TestCase):

Lib/test/test_unittest/test_loader.py

@@ -1,7 +1,6 @@
 import functools
 import sys
 import types
-import warnings
 
 import unittest
 

Lib/test/test_wmi.py

@@ -1,7 +1,6 @@
 # Test the internal _wmi module on Windows
 # This is used by the platform module, and potentially others
 
-import sys
 import unittest
 from test.support import import_helper, requires_resource
 

Lib/test/test_zipfile64.py

@@ -11,7 +11,7 @@ support.requires(
         'test requires loads of disk-space bytes and a long time to run'
     )
 
-import zipfile, os, unittest
+import zipfile, unittest
 import time
 import sys