May 20, 2025 · May 20, 2025 · May 22, 2025 · May 23, 2025 · May 20, 2025 · May 22, 2025
diff --git a/Lib/test/.ruff.toml b/Lib/test/.ruff.toml

 [lint]
 select = [
    "F401",  # Unused import
    "F811",  # Redefinition of unused variable (useful for finding test methods with the same name)
 ]

 [lint.per-file-ignores]
 "*/**/__main__.py" = ["F401"]  # Unused import
 "test_import/*.py" = ["F401"]  # Unused import
 "test_importlib/*.py" = ["F401"]  # Unused import
 "typinganndata/partialexecution/*.py" = ["F401"]  # Unused import
diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py
        self.started = False

    def start(self):
        import warnings
        try:
            f = open(self.procfile, 'r')
        except OSError as e:
    # Fall back to making a best-effort guess.
    if hasattr(object, '__flags__'):
        # Look for any type object with the Py_TPFLAGS_STATIC_BUILTIN flag set.
        import datetime
        import datetime  # noqa: F401
        seen = set()
        for cls, subs in walk_class_hierarchy(object):
            if cls in seen:
diff --git a/Lib/test/support/interpreters/channels.py b/Lib/test/support/interpreters/channels.py

 # aliases:
 from _interpchannels import (
    ChannelError, ChannelNotFoundError, ChannelClosedError,
    ChannelEmptyError, ChannelNotEmptyError,
    ChannelError, ChannelNotFoundError, ChannelClosedError,  # noqa: F401
    ChannelEmptyError, ChannelNotEmptyError,  # noqa: F401
 )
 from ._crossinterp import (
    UNBOUND_ERROR, UNBOUND_REMOVE,
diff --git a/Lib/test/test_capi/test_config.py b/Lib/test/test_capi/test_config.py
 """
 import os
 import sys
 import sysconfig
 import types
 import unittest
 from test import support
diff --git a/Lib/test/test_codeccallbacks.py b/Lib/test/test_codeccallbacks.py
 import codecs
 import html.entities
 import itertools
 import re
 import sys
 import unicodedata
 import unittest
diff --git a/Lib/test/test_crossinterp.py b/Lib/test/test_crossinterp.py
 import contextlib
 import importlib
 import importlib.util
 import itertools
 import sys
 import types
diff --git a/Lib/test/test_ctypes/_support.py b/Lib/test/test_ctypes/_support.py
 import ctypes
 from _ctypes import Structure, Union, _Pointer, Array, _SimpleCData, CFuncPtr
 import sys
 from test import support


 _CData = Structure.__base__
diff --git a/Lib/test/test_ctypes/test_byteswap.py b/Lib/test/test_ctypes/test_byteswap.py
 import binascii
 import ctypes
 import math
 import struct
 import sys
diff --git a/Lib/test/test_ctypes/test_generated_structs.py b/Lib/test/test_ctypes/test_generated_structs.py
 """

 import unittest
 from test.support import import_helper, verbose
 from test.support import import_helper
 import re
 from dataclasses import dataclass
 from functools import cached_property
diff --git a/Lib/test/test_decimal.py b/Lib/test/test_decimal.py
 import math
 import os, sys
 import operator
 import warnings
 import pickle, copy
 import unittest
 import numbers
diff --git a/Lib/test/test_generated_cases.py b/Lib/test/test_generated_cases.py
 import contextlib
 import os
 import re
 import sys
 import tempfile
 import unittest

 from io import StringIO
 from test import support
 from test import test_tools


 test_tools.skip_if_missing("cases_generator")
 with test_tools.imports_under_tool("cases_generator"):
    from analyzer importanalyze_forest,StackItem
    from analyzer import StackItem
    from cwriter import CWriter
    import parser
    from stack import Local, Stack
    import tier1_generator
    import opcode_metadata_generator
    import optimizer_generator


diff --git a/Lib/test/test_genericpath.py b/Lib/test/test_genericpath.py
 import unittest
 import warnings
 from test.support import (
    is_apple,is_emscripten,os_helper, warnings_helper
    is_apple, os_helper, warnings_helper
 )
 from test.support.script_helper import assert_python_ok
 from test.support.os_helper import FakePath
diff --git a/Lib/test/test_gzip.py b/Lib/test/test_gzip.py
 import struct
 import sys
 import unittest
 import warnings
 from subprocess import PIPE, Popen
 from test.support import catch_unraisable_exception
 from test.support import import_helper
diff --git a/Lib/test/test_hashlib.py b/Lib/test/test_hashlib.py
 import tempfile
 import threading
 import unittest
 import warnings
 from test import support
 from test.support import _4G, bigmemtest
 from test.support import hashlib_helper
diff --git a/Lib/test/test_hmac.py b/Lib/test/test_hmac.py
 import hmac
 import hashlib
 import random
 import test.support
 import test.support.hashlib_helper as hashlib_helper
 import types
 import unittest
diff --git a/Lib/test/test_idle.py b/Lib/test/test_idle.py

 # Unittest.main and test.libregrtest.runtest.runtest_inner
 # call load_tests, when present here, to discover tests to run.
 from idlelib.idle_test import load_tests
 from idlelib.idle_test import load_tests  # noqa: F401

 if __name__ == '__main__':
    tk.NoDefaultRoot()
diff --git a/Lib/test/test_interpreters/utils.py b/Lib/test/test_interpreters/utils.py
 import threading
 import types
 import unittest
 import warnings

 from test import support

diff --git a/Lib/test/test_ntpath.py b/Lib/test/test_ntpath.py
 import sys
 import unittest
 import warnings
 from test.support import cpython_only, os_helper
 from test.support import TestFailed, is_emscripten
 from test.support import TestFailed, cpython_only, os_helper
 from test.support.os_helper import FakePath
 from test import test_genericpath
 from tempfile import TemporaryFile
diff --git a/Lib/test/test_peepholer.py b/Lib/test/test_peepholer.py

 from test import support
 from test.support.bytecode_helper import (
    BytecodeTestCase, CfgOptimizationTestCase, CompilationStepTestCase)
    BytecodeTestCase, CfgOptimizationTestCase)


 def compile_pattern_with_fast_locals(pattern):
diff --git a/Lib/test/test_pty.py b/Lib/test/test_pty.py
 import signal
 import socket
 import io # readline
 import warnings

 TEST_STRING_1 = b"I wish to buy a fish license.\n"
 TEST_STRING_2 = b"For my pet fish, Eric.\n"
diff --git a/Lib/test/test_pydoc/test_pydoc.py b/Lib/test/test_pydoc/test_pydoc.py
            # of the known subclasses of object. (doc.docclass() used to
            # fail if HeapType was imported before running this test, like
            # when running tests sequentially.)
            from _testcapi import HeapType
            from _testcapi import HeapType  # noqa: F401
        except ImportError:
            pass
        text = doc.docclass(object)
diff --git a/Lib/test/test_remote_pdb.py b/Lib/test/test_remote_pdb.py
 import io
 import time
 import itertools
 import json
 import os
 import socket
 import subprocess
 import sys
 import tempfile
 import textwrap
 import threading
 import unittest
 import unittest.mock
 from contextlib import closing, contextmanager, redirect_stdout, redirect_stderr, ExitStack
 from pathlib import Path
 from test.support import is_wasi, cpython_only, force_color, requires_subprocess, SHORT_TIMEOUT
 from test.support.os_helper importtemp_dir,TESTFN, unlink
 from typing importDict,List, Optional, Tuple, Union, Any
 from test.support.os_helper import TESTFN, unlink
 from typing import List

 import pdb
 from pdb import _PdbServer, _PdbClient


 def _supports_remote_attaching():
    from contextlib import suppress
    PROCESS_VM_READV_SUPPORTED = False

    try:
diff --git a/Lib/test/test_shutil.py b/Lib/test/test_shutil.py
            target_api.append('disk_usage')
        self.assertEqual(set(shutil.__all__), set(target_api))
        with self.assertWarns(DeprecationWarning):
            from shutil import ExecError
            from shutil import ExecError  # noqa: F401


 if __name__ == '__main__':
diff --git a/Lib/test/test_string/_support.py b/Lib/test/test_string/_support.py
 import unittest
 from string.templatelib import Interpolation


diff --git a/Lib/test/test_sysconfig.py b/Lib/test/test_sysconfig.py
 from sysconfig.__main__ import _main, _parse_makefile, _get_pybuilddir, _get_json_data_name
 import _imp
 import _osx_support
 import _sysconfig


 HAS_USER_BASE = sysconfig._HAS_USER_BASE
diff --git a/Lib/test/test_threading.py b/Lib/test/test_threading.py
        # its state should be removed from interpreter' thread states list
        # to avoid its double cleanup
        try:
            from resource import setrlimit, RLIMIT_NPROC
            from resource import setrlimit, RLIMIT_NPROC  # noqa: F401
        except ImportError as err:
            self.skipTest(err)  # RLIMIT_NPROC is specific to Linux and BSD
        code = """if 1:
diff --git a/Lib/test/test_tools/i18n_data/docstrings.py b/Lib/test/test_tools/i18n_data/docstrings.py
 """Module docstring"""

 # Test docstring extraction
 from gettext import gettext as _
 from gettext import gettext as _  # noqa: F401


 # Empty docstring
diff --git a/Lib/test/test_types.py b/Lib/test/test_types.py
            from test.support import interpreters
        except ModuleNotFoundError:
            raise unittest.SkipTest('subinterpreters required')
        import test.support.interpreters.channels
        import test.support.interpreters.channels  # noqa: F401

    @cpython_only
    @no_rerun('channels (and queues) might have a refleak; see gh-122199')
diff --git a/Lib/test/test_typing.py b/Lib/test/test_typing.py
 import textwrap
 import typing
 import weakref
 import warnings
 import types

 from test.support import (
    captured_stderr, cpython_only,infinite_recursion,requires_docstrings, import_helper, run_code,
    captured_stderr, cpython_only, requires_docstrings, import_helper, run_code,
    EqualToForwardRef,
 )
 from test.typinganndata import (
diff --git a/Lib/test/test_venv.py b/Lib/test/test_venv.py
                     err, flags=re.MULTILINE)
        # Ignore warning about missing optional module:
        try:
            import ssl
            import ssl  # noqa: F401
        except ImportError:
            err = re.sub(
                "^WARNING: Disabling truststore since ssl support is missing$",
diff --git a/Lib/test/test_webbrowser.py b/Lib/test/test_webbrowser.py
 import sys
 import unittest
 import webbrowser
 from functools import partial
 from test import support
 from test.support import import_helper
 from test.support import is_apple_mobile
diff --git a/Lib/test/test_zipfile/__main__.py b/Lib/test/test_zipfile/__main__.py
 import unittest

 from . import load_tests  # noqa: F401
 from . import load_tests


 if __name__ == "__main__":
Original file line number	Diff line number	Diff line change
Expand Up		@@ -19,5 +19,12 @@ extend-exclude = [

		[lint]
		select = [
		"F401", # Unused import
		"F811", # Redefinition of unused variable (useful for finding test methods with the same name)
		]

		[lint.per-file-ignores]
		"/*/__main__.py" = ["F401"] # Unused import
		"test_import/*.py" = ["F401"] # Unused import
		"test_importlib/*.py" = ["F401"] # Unused import
		"typinganndata/partialexecution/*.py" = ["F401"] # Unused import
Original file line number	Diff line number	Diff line change
Expand Up		@@ -1101,7 +1101,6 @@ def __init__(self):
		self.started = False

		def start(self):
		import warnings
		try:
		f = open(self.procfile, 'r')
		except OSError as e:
Expand DownExpand Up		@@ -2728,7 +2727,7 @@ def iter_builtin_types():
		# Fall back to making a best-effort guess.
		if hasattr(object, '__flags__'):
		# Look for any type object with the Py_TPFLAGS_STATIC_BUILTIN flag set.
		import datetime
Copy link Member vstinnerMay 20, 2025 Choose a reason for hiding this comment The reason will be displayed to describe this comment to others.Learn more. This import has to stay. It deserves a`# noqa: F401`. @encukou: Can you confirm?
		import datetime # noqa: F401
		seen = set()
		for cls, subs in walk_class_hierarchy(object):
		if cls in seen:
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -3,7 +3,6 @@
		"""
		import os
		import sys
		import sysconfig
		import types
		import unittest
		from test import support
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -2,7 +2,6 @@
		import codecs
		import html.entities
		import itertools
		import re
		import sys
		import unicodedata
		import unittest
Expand Down
Original file line number	Diff line number	Diff line change
		@@ -1,6 +1,4 @@
		import contextlib
		import importlib
		import importlib.util
		import itertools
		import sys
		import types
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -3,7 +3,6 @@
		import ctypes
		from _ctypes import Structure, Union, _Pointer, Array, _SimpleCData, CFuncPtr
		import sys
		from test import support


		_CData = Structure.__base__
Expand Down
Original file line number	Diff line number	Diff line change
		@@ -1,5 +1,4 @@
		import binascii
		import ctypes
		import math
		import struct
		import sys
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -10,7 +10,7 @@
		"""

		import unittest
		from test.support import import_helper, verbose
		from test.support import import_helper
		import re
		from dataclasses import dataclass
		from functools import cached_property
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -28,7 +28,6 @@
		import math
		import os, sys
		import operator
		import warnings
		import pickle, copy
		import unittest
		import numbers
Expand Down
Original file line number	Diff line number	Diff line change
		@@ -1,11 +1,9 @@
		import contextlib
		import os
		import re
		import sys
		import tempfile
		import unittest

		from io import StringIO
		from test import support
		from test import test_tools

Expand All		@@ -31,12 +29,11 @@ def skip_if_different_mount_drives():

		test_tools.skip_if_missing("cases_generator")
		with test_tools.imports_under_tool("cases_generator"):
		from analyzer importanalyze_forest,StackItem
		from analyzer import StackItem
		from cwriter import CWriter
		import parser
		from stack import Local, Stack
		import tier1_generator
		import opcode_metadata_generator
		import optimizer_generator


Expand Down