diff --git a/pyproject.toml b/pyproject.toml
index 23830a24881..e0c053dc9c1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -153,7 +153,6 @@ distlib = "https://bitbucket.org/pypa/distlib/raw/master/LICENSE.txt"
 [tool.ruff]
 # Pinned to delay pyupgrade changes (https://github.com/pypa/pip/issues/13236)
 target-version = "py38"  # Pin Ruff to Python 3.8
-src = ["src"]
 line-length = 88
 extend-exclude = [
     "_vendor",
diff --git a/tests/conftest.py b/tests/conftest.py
index d093eea462b..0066f48348b 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -43,7 +43,6 @@
 from installer import install
 from installer.destinations import SchemeDictionaryDestination
 from installer.sources import WheelFile
-
 from pip import __file__ as pip_location
 from pip._internal.locations import _USE_SYSCONFIG
 from pip._internal.utils.temp_dir import global_tempdir_manager
diff --git a/tests/functional/test_build_env.py b/tests/functional/test_build_env.py
index c950a8a6de9..3ebc62624d1 100644
--- a/tests/functional/test_build_env.py
+++ b/tests/functional/test_build_env.py
@@ -4,7 +4,6 @@
 from typing import Optional
 
 import pytest
-
 from pip._internal.build_env import BuildEnvironment, _get_system_sitepackages
 
 from tests.lib import (
diff --git a/tests/functional/test_cli.py b/tests/functional/test_cli.py
index 366d0129b2d..39f2d92c47c 100644
--- a/tests/functional/test_cli.py
+++ b/tests/functional/test_cli.py
@@ -6,7 +6,6 @@
 from textwrap import dedent
 
 import pytest
-
 from pip._internal.commands import commands_dict
 
 from tests.lib import PipTestEnvironment
diff --git a/tests/functional/test_debug.py b/tests/functional/test_debug.py
index 82557299904..15fcc709d79 100644
--- a/tests/functional/test_debug.py
+++ b/tests/functional/test_debug.py
@@ -2,12 +2,11 @@
 from typing import List
 
 import pytest
-
-from pip._vendor.packaging.version import Version
-
 from pip._internal.commands.debug import create_vendor_txt_map
 from pip._internal.utils import compatibility_tags
 
+from pip._vendor.packaging.version import Version
+
 from tests.lib import PipTestEnvironment
 
 
diff --git a/tests/functional/test_download.py b/tests/functional/test_download.py
index 3906885a19b..f9276a1bcf0 100644
--- a/tests/functional/test_download.py
+++ b/tests/functional/test_download.py
@@ -8,7 +8,6 @@
 from typing import Callable, List, Tuple
 
 import pytest
-
 from pip._internal.cli.status_codes import ERROR
 from pip._internal.utils.urls import path_to_url
 
diff --git a/tests/functional/test_fast_deps.py b/tests/functional/test_fast_deps.py
index 85c9bbd7072..30a9bd79e72 100644
--- a/tests/functional/test_fast_deps.py
+++ b/tests/functional/test_fast_deps.py
@@ -7,11 +7,10 @@
 from typing import Iterable
 
 import pytest
+from pip._internal.utils.misc import hash_file
 
 from pip._vendor.packaging.utils import canonicalize_name
 
-from pip._internal.utils.misc import hash_file
-
 from tests.lib import PipTestEnvironment, TestData, TestPipResult
 
 
diff --git a/tests/functional/test_freeze.py b/tests/functional/test_freeze.py
index 0a7cedd11cb..4c285bae252 100644
--- a/tests/functional/test_freeze.py
+++ b/tests/functional/test_freeze.py
@@ -6,11 +6,10 @@
 from pathlib import Path
 
 import pytest
+from pip._internal.models.direct_url import DirectUrl, DirInfo
 
 from pip._vendor.packaging.utils import canonicalize_name
 
-from pip._internal.models.direct_url import DirectUrl, DirInfo
-
 from tests.lib import (
     PipTestEnvironment,
     TestData,
diff --git a/tests/functional/test_help.py b/tests/functional/test_help.py
index cba036927c8..0bce6aa0314 100644
--- a/tests/functional/test_help.py
+++ b/tests/functional/test_help.py
@@ -1,7 +1,6 @@
 from unittest.mock import Mock
 
 import pytest
-
 from pip._internal.cli.status_codes import ERROR, SUCCESS
 from pip._internal.commands import commands_dict, create_command
 from pip._internal.exceptions import CommandError
diff --git a/tests/functional/test_index.py b/tests/functional/test_index.py
index b58ad4a50d6..ce97bb09f2b 100644
--- a/tests/functional/test_index.py
+++ b/tests/functional/test_index.py
@@ -1,7 +1,6 @@
 import json
 
 import pytest
-
 from pip._internal.cli.status_codes import ERROR, SUCCESS
 from pip._internal.commands import create_command
 
diff --git a/tests/functional/test_install.py b/tests/functional/test_install.py
index 1dc46cf8621..705544302b9 100644
--- a/tests/functional/test_install.py
+++ b/tests/functional/test_install.py
@@ -12,7 +12,6 @@
 from typing import Dict, Iterable, List, Optional, Tuple
 
 import pytest
-
 from pip._internal.cli.status_codes import ERROR, SUCCESS
 from pip._internal.models.index import PyPI, TestPyPI
 from pip._internal.utils.misc import rmtree
diff --git a/tests/functional/test_install_direct_url.py b/tests/functional/test_install_direct_url.py
index 5aefab09cb3..054ae5662c4 100644
--- a/tests/functional/test_install_direct_url.py
+++ b/tests/functional/test_install_direct_url.py
@@ -1,5 +1,4 @@
 import pytest
-
 from pip._internal.models.direct_url import VcsInfo
 
 from tests.lib import PipTestEnvironment, TestData, _create_test_package
diff --git a/tests/functional/test_invalid_versions_and_specifiers.py b/tests/functional/test_invalid_versions_and_specifiers.py
index 6349036bf52..8d3558356c7 100644
--- a/tests/functional/test_invalid_versions_and_specifiers.py
+++ b/tests/functional/test_invalid_versions_and_specifiers.py
@@ -1,7 +1,6 @@
 import zipfile
 
 import pytest
-
 from pip._internal.metadata import select_backend
 
 from tests.lib import PipTestEnvironment, TestData
diff --git a/tests/functional/test_list.py b/tests/functional/test_list.py
index 468e6acd6c2..298022e65be 100644
--- a/tests/functional/test_list.py
+++ b/tests/functional/test_list.py
@@ -3,7 +3,6 @@
 from pathlib import Path
 
 import pytest
-
 from pip._internal.models.direct_url import DirectUrl, DirInfo
 
 from tests.lib import (
diff --git a/tests/functional/test_new_resolver_target.py b/tests/functional/test_new_resolver_target.py
index 58b2d548b65..fec6f5d02c7 100644
--- a/tests/functional/test_new_resolver_target.py
+++ b/tests/functional/test_new_resolver_target.py
@@ -2,7 +2,6 @@
 from typing import Callable, Optional
 
 import pytest
-
 from pip._internal.cli.status_codes import ERROR, SUCCESS
 
 from tests.lib import PipTestEnvironment
diff --git a/tests/functional/test_pep517.py b/tests/functional/test_pep517.py
index 34ddd6633ce..54a3f8b405e 100644
--- a/tests/functional/test_pep517.py
+++ b/tests/functional/test_pep517.py
@@ -4,7 +4,6 @@
 
 import pytest
 import tomli_w
-
 from pip._internal.build_env import BuildEnvironment
 from pip._internal.req import InstallRequirement
 
diff --git a/tests/functional/test_search.py b/tests/functional/test_search.py
index 9491b492400..c5b1a93c36b 100644
--- a/tests/functional/test_search.py
+++ b/tests/functional/test_search.py
@@ -3,7 +3,6 @@
 from unittest import mock
 
 import pytest
-
 from pip._internal.cli.status_codes import NO_MATCHES_FOUND, SUCCESS
 from pip._internal.commands import create_command
 from pip._internal.commands.search import highest_version, print_results, transform_hits
diff --git a/tests/functional/test_show.py b/tests/functional/test_show.py
index ea831935372..112cc297ee6 100644
--- a/tests/functional/test_show.py
+++ b/tests/functional/test_show.py
@@ -4,7 +4,6 @@
 import textwrap
 
 import pytest
-
 from pip import __version__
 from pip._internal.commands.show import search_packages_info
 from pip._internal.utils.unpacking import untar_file
diff --git a/tests/functional/test_uninstall.py b/tests/functional/test_uninstall.py
index d86ba172002..5c359b6d416 100644
--- a/tests/functional/test_uninstall.py
+++ b/tests/functional/test_uninstall.py
@@ -9,7 +9,6 @@
 from unittest.mock import Mock
 
 import pytest
-
 from pip._internal.req.constructors import install_req_from_line
 from pip._internal.utils.misc import rmtree
 
diff --git a/tests/functional/test_vcs_bazaar.py b/tests/functional/test_vcs_bazaar.py
index 821427ed841..451861932e0 100644
--- a/tests/functional/test_vcs_bazaar.py
+++ b/tests/functional/test_vcs_bazaar.py
@@ -7,7 +7,6 @@
 from pathlib import Path
 
 import pytest
-
 from pip._internal.vcs.bazaar import Bazaar
 from pip._internal.vcs.versioncontrol import RemoteNotFoundError
 
diff --git a/tests/functional/test_vcs_git.py b/tests/functional/test_vcs_git.py
index f917fa8b39e..71ff28e6599 100644
--- a/tests/functional/test_vcs_git.py
+++ b/tests/functional/test_vcs_git.py
@@ -9,7 +9,6 @@
 from unittest.mock import Mock, patch
 
 import pytest
-
 from pip._internal.utils.misc import HiddenText
 from pip._internal.vcs import vcs
 from pip._internal.vcs.git import Git, RemoteNotFoundError
diff --git a/tests/functional/test_vcs_subversion.py b/tests/functional/test_vcs_subversion.py
index 987f481edd4..8409832d815 100644
--- a/tests/functional/test_vcs_subversion.py
+++ b/tests/functional/test_vcs_subversion.py
@@ -1,7 +1,6 @@
 from pathlib import Path
 
 import pytest
-
 from pip._internal.vcs.subversion import Subversion
 from pip._internal.vcs.versioncontrol import RemoteNotFoundError
 
diff --git a/tests/functional/test_wheel.py b/tests/functional/test_wheel.py
index e1ede880496..f2198f19287 100644
--- a/tests/functional/test_wheel.py
+++ b/tests/functional/test_wheel.py
@@ -7,7 +7,6 @@
 from pathlib import Path
 
 import pytest
-
 from pip._internal.cli.status_codes import ERROR
 
 from tests.lib import (
diff --git a/tests/lib/__init__.py b/tests/lib/__init__.py
index 44fa4053b73..a047b39b935 100644
--- a/tests/lib/__init__.py
+++ b/tests/lib/__init__.py
@@ -33,10 +33,6 @@
 from zipfile import ZipFile
 
 import pytest
-from scripttest import FoundDir, FoundFile, ProcResult, TestFileEnvironment
-
-from pip._vendor.packaging.utils import canonicalize_name
-
 from pip._internal.cli.main import main as pip_entry_point
 from pip._internal.index.collector import LinkCollector
 from pip._internal.index.package_finder import PackageFinder
@@ -46,6 +42,9 @@
 from pip._internal.models.target_python import TargetPython
 from pip._internal.network.session import PipSession
 from pip._internal.utils.egg_link import _egg_link_names
+from scripttest import FoundDir, FoundFile, ProcResult, TestFileEnvironment
+
+from pip._vendor.packaging.utils import canonicalize_name
 
 from tests.lib.venv import VirtualEnvironment
 from tests.lib.wheel import make_wheel
diff --git a/tests/lib/wheel.py b/tests/lib/wheel.py
index 43b382919f6..6110c14ea2f 100644
--- a/tests/lib/wheel.py
+++ b/tests/lib/wheel.py
@@ -24,10 +24,10 @@
 )
 from zipfile import ZipFile
 
-from pip._vendor.requests.structures import CaseInsensitiveDict
-
 from pip._internal.metadata import BaseDistribution, MemoryWheel, get_wheel_distribution
 
+from pip._vendor.requests.structures import CaseInsensitiveDict
+
 # As would be used in metadata
 HeaderValue = Union[str, List[str]]
 
diff --git a/tests/unit/metadata/test_metadata.py b/tests/unit/metadata/test_metadata.py
index 404d858bdd5..885ba51df44 100644
--- a/tests/unit/metadata/test_metadata.py
+++ b/tests/unit/metadata/test_metadata.py
@@ -5,9 +5,6 @@
 from unittest import mock
 
 import pytest
-
-from pip._vendor.packaging.utils import NormalizedName
-
 from pip._internal.metadata import (
     BaseDistribution,
     get_directory_distribution,
@@ -17,6 +14,8 @@
 from pip._internal.metadata.base import FilesystemWheel
 from pip._internal.models.direct_url import DIRECT_URL_METADATA_NAME, ArchiveInfo
 
+from pip._vendor.packaging.utils import NormalizedName
+
 from tests.lib.wheel import make_wheel
 
 
diff --git a/tests/unit/metadata/test_metadata_pkg_resources.py b/tests/unit/metadata/test_metadata_pkg_resources.py
index 6b3a302fb3c..c9cd7781360 100644
--- a/tests/unit/metadata/test_metadata_pkg_resources.py
+++ b/tests/unit/metadata/test_metadata_pkg_resources.py
@@ -4,12 +4,6 @@
 from unittest import mock
 
 import pytest
-
-from pip._vendor.packaging.requirements import Requirement
-from pip._vendor.packaging.specifiers import SpecifierSet
-from pip._vendor.packaging.utils import canonicalize_name
-from pip._vendor.packaging.version import parse as parse_version
-
 from pip._internal.exceptions import UnsupportedWheel
 from pip._internal.metadata.pkg_resources import (
     Distribution,
@@ -17,6 +11,11 @@
     InMemoryMetadata,
 )
 
+from pip._vendor.packaging.requirements import Requirement
+from pip._vendor.packaging.specifiers import SpecifierSet
+from pip._vendor.packaging.utils import canonicalize_name
+from pip._vendor.packaging.version import parse as parse_version
+
 pkg_resources = pytest.importorskip("pip._vendor.pkg_resources")
 
 
diff --git a/tests/unit/resolution_resolvelib/conftest.py b/tests/unit/resolution_resolvelib/conftest.py
index 6aa5f505dbb..1b45d6235ff 100644
--- a/tests/unit/resolution_resolvelib/conftest.py
+++ b/tests/unit/resolution_resolvelib/conftest.py
@@ -1,7 +1,6 @@
 from typing import Iterator
 
 import pytest
-
 from pip._internal.cli.req_command import RequirementCommand
 from pip._internal.commands.install import InstallCommand
 from pip._internal.index.collector import LinkCollector
diff --git a/tests/unit/resolution_resolvelib/test_provider.py b/tests/unit/resolution_resolvelib/test_provider.py
index 690217e85ce..0bec497a3a3 100644
--- a/tests/unit/resolution_resolvelib/test_provider.py
+++ b/tests/unit/resolution_resolvelib/test_provider.py
@@ -2,9 +2,6 @@
 from typing import TYPE_CHECKING, Dict, Iterable, List, Optional, Sequence
 
 import pytest
-
-from pip._vendor.resolvelib.resolvers import RequirementInformation
-
 from pip._internal.req.constructors import install_req_from_req_string
 from pip._internal.resolution.resolvelib.base import Candidate
 from pip._internal.resolution.resolvelib.candidates import REQUIRES_PYTHON_IDENTIFIER
@@ -12,11 +9,13 @@
 from pip._internal.resolution.resolvelib.provider import PipProvider
 from pip._internal.resolution.resolvelib.requirements import SpecifierRequirement
 
-if TYPE_CHECKING:
-    from pip._vendor.resolvelib.providers import Preference
+from pip._vendor.resolvelib.resolvers import RequirementInformation
 
+if TYPE_CHECKING:
     from pip._internal.resolution.resolvelib.base import Candidate, Requirement
 
+    from pip._vendor.resolvelib.providers import Preference
+
     PreferenceInformation = RequirementInformation[Requirement, Candidate]
 
 
diff --git a/tests/unit/resolution_resolvelib/test_requirement.py b/tests/unit/resolution_resolvelib/test_requirement.py
index cde6256a206..78cdb9ebf46 100644
--- a/tests/unit/resolution_resolvelib/test_requirement.py
+++ b/tests/unit/resolution_resolvelib/test_requirement.py
@@ -3,13 +3,12 @@
 from typing import List, Tuple
 
 import pytest
-
-from pip._vendor.resolvelib import BaseReporter, Resolver
-
 from pip._internal.resolution.resolvelib.base import Candidate, Constraint, Requirement
 from pip._internal.resolution.resolvelib.factory import Factory
 from pip._internal.resolution.resolvelib.provider import PipProvider
 
+from pip._vendor.resolvelib import BaseReporter, Resolver
+
 from tests.lib import TestData
 
 # NOTE: All tests are prefixed `test_rlr` (for "test resolvelib resolver").
diff --git a/tests/unit/resolution_resolvelib/test_resolver.py b/tests/unit/resolution_resolvelib/test_resolver.py
index 9a0e4c90825..dc92b515ea0 100644
--- a/tests/unit/resolution_resolvelib/test_resolver.py
+++ b/tests/unit/resolution_resolvelib/test_resolver.py
@@ -2,11 +2,6 @@
 from unittest import mock
 
 import pytest
-
-from pip._vendor.packaging.utils import canonicalize_name
-from pip._vendor.resolvelib.resolvers import Result
-from pip._vendor.resolvelib.structs import DirectedGraph
-
 from pip._internal.index.package_finder import PackageFinder
 from pip._internal.operations.prepare import RequirementPreparer
 from pip._internal.req.constructors import install_req_from_line
@@ -16,6 +11,10 @@
     get_topological_weights,
 )
 
+from pip._vendor.packaging.utils import canonicalize_name
+from pip._vendor.resolvelib.resolvers import Result
+from pip._vendor.resolvelib.structs import DirectedGraph
+
 
 @pytest.fixture
 def resolver(preparer: RequirementPreparer, finder: PackageFinder) -> Resolver:
diff --git a/tests/unit/test_appdirs.py b/tests/unit/test_appdirs.py
index 51bd6828e2a..00fe1706cd6 100644
--- a/tests/unit/test_appdirs.py
+++ b/tests/unit/test_appdirs.py
@@ -5,11 +5,10 @@
 from unittest import mock
 
 import pytest
+from pip._internal.utils import appdirs
 
 from pip._vendor import platformdirs
 
-from pip._internal.utils import appdirs
-
 
 class TestUserCacheDir:
     @pytest.mark.skipif(sys.platform != "win32", reason="Windows-only test")
diff --git a/tests/unit/test_base_command.py b/tests/unit/test_base_command.py
index 33d2a95a3c2..9c85a3a90fd 100644
--- a/tests/unit/test_base_command.py
+++ b/tests/unit/test_base_command.py
@@ -7,7 +7,6 @@
 from unittest.mock import Mock, patch
 
 import pytest
-
 from pip._internal.cli.base_command import Command
 from pip._internal.cli.status_codes import SUCCESS
 from pip._internal.utils import temp_dir
diff --git a/tests/unit/test_cache.py b/tests/unit/test_cache.py
index 30cdb6ebece..ef6513336a7 100644
--- a/tests/unit/test_cache.py
+++ b/tests/unit/test_cache.py
@@ -1,12 +1,12 @@
 import os
 from pathlib import Path
 
-from pip._vendor.packaging.tags import Tag, interpreter_name, interpreter_version
-
 from pip._internal.cache import WheelCache, _hash_dict
 from pip._internal.models.link import Link
 from pip._internal.utils.misc import ensure_dir
 
+from pip._vendor.packaging.tags import Tag, interpreter_name, interpreter_version
+
 
 def test_falsey_path_none() -> None:
     wc = WheelCache("")
diff --git a/tests/unit/test_cmdoptions.py b/tests/unit/test_cmdoptions.py
index 8c33ca8c18d..09c3e050f2f 100644
--- a/tests/unit/test_cmdoptions.py
+++ b/tests/unit/test_cmdoptions.py
@@ -4,7 +4,6 @@
 from venv import EnvBuilder
 
 import pytest
-
 from pip._internal.cli.cmdoptions import _convert_python_version
 from pip._internal.cli.main_parser import identify_python_interpreter
 
diff --git a/tests/unit/test_collector.py b/tests/unit/test_collector.py
index c7760a238f2..a17065f1273 100644
--- a/tests/unit/test_collector.py
+++ b/tests/unit/test_collector.py
@@ -10,10 +10,6 @@
 from unittest import mock
 
 import pytest
-
-from pip._vendor import requests
-from pip._vendor.packaging.requirements import Requirement
-
 from pip._internal.exceptions import NetworkConnectionError
 from pip._internal.index.collector import (
     IndexContent,
@@ -37,6 +33,9 @@
 )
 from pip._internal.network.session import PipSession
 
+from pip._vendor import requests
+from pip._vendor.packaging.requirements import Requirement
+
 from tests.lib import (
     TestData,
     make_test_link_collector,
diff --git a/tests/unit/test_command_install.py b/tests/unit/test_command_install.py
index 5e7889fe16b..036bee3e49d 100644
--- a/tests/unit/test_command_install.py
+++ b/tests/unit/test_command_install.py
@@ -2,7 +2,6 @@
 from unittest import mock
 
 import pytest
-
 from pip._internal.commands import install
 from pip._internal.commands.install import create_os_error_message, decide_user_install
 
diff --git a/tests/unit/test_commands.py b/tests/unit/test_commands.py
index 9d5aefec298..8fa329737ac 100644
--- a/tests/unit/test_commands.py
+++ b/tests/unit/test_commands.py
@@ -3,7 +3,6 @@
 from unittest import mock
 
 import pytest
-
 from pip._internal.cli.base_command import Command
 from pip._internal.cli.req_command import (
     IndexGroupCommand,
diff --git a/tests/unit/test_compat.py b/tests/unit/test_compat.py
index b7f46ca9000..10458f6cf40 100644
--- a/tests/unit/test_compat.py
+++ b/tests/unit/test_compat.py
@@ -2,7 +2,6 @@
 from pathlib import Path
 
 import pytest
-
 from pip._internal.utils.compat import get_path_uid
 
 
diff --git a/tests/unit/test_configuration.py b/tests/unit/test_configuration.py
index 73b7d68c399..381bce39c65 100644
--- a/tests/unit/test_configuration.py
+++ b/tests/unit/test_configuration.py
@@ -4,7 +4,6 @@
 from unittest.mock import MagicMock
 
 import pytest
-
 from pip._internal.configuration import get_configuration_files, kinds
 from pip._internal.exceptions import ConfigurationError
 
diff --git a/tests/unit/test_direct_url.py b/tests/unit/test_direct_url.py
index 151e0a30f5b..8eb346d5f71 100644
--- a/tests/unit/test_direct_url.py
+++ b/tests/unit/test_direct_url.py
@@ -1,5 +1,4 @@
 import pytest
-
 from pip._internal.models.direct_url import (
     ArchiveInfo,
     DirectUrl,
diff --git a/tests/unit/test_exceptions.py b/tests/unit/test_exceptions.py
index 90a44348f0a..c5913e4cd91 100644
--- a/tests/unit/test_exceptions.py
+++ b/tests/unit/test_exceptions.py
@@ -9,11 +9,10 @@
 from typing import Optional, Tuple
 
 import pytest
+from pip._internal.exceptions import DiagnosticPipError, ExternallyManagedEnvironment
 
 from pip._vendor import rich
 
-from pip._internal.exceptions import DiagnosticPipError, ExternallyManagedEnvironment
-
 
 class TestDiagnosticPipErrorCreation:
     def test_fails_without_reference(self) -> None:
diff --git a/tests/unit/test_finder.py b/tests/unit/test_finder.py
index 8c923dcd36f..e8d6711d37f 100644
--- a/tests/unit/test_finder.py
+++ b/tests/unit/test_finder.py
@@ -2,13 +2,8 @@
 from typing import Iterable
 from unittest.mock import Mock, patch
 
-import pytest
-
-from pip._vendor.packaging.specifiers import SpecifierSet
-from pip._vendor.packaging.tags import Tag
-from pip._vendor.packaging.version import parse as parse_version
-
 import pip._internal.utils.compatibility_tags
+import pytest
 from pip._internal.exceptions import BestVersionAlreadyInstalled, DistributionNotFound
 from pip._internal.index.package_finder import (
     CandidateEvaluator,
@@ -20,6 +15,10 @@
 from pip._internal.models.target_python import TargetPython
 from pip._internal.req.constructors import install_req_from_line
 
+from pip._vendor.packaging.specifiers import SpecifierSet
+from pip._vendor.packaging.tags import Tag
+from pip._vendor.packaging.version import parse as parse_version
+
 from tests.lib import TestData, make_test_finder
 
 
diff --git a/tests/unit/test_format_control.py b/tests/unit/test_format_control.py
index 33a03729db5..d00aee983a2 100644
--- a/tests/unit/test_format_control.py
+++ b/tests/unit/test_format_control.py
@@ -2,7 +2,6 @@
 from typing import FrozenSet, List, Set
 
 import pytest
-
 from pip._internal.cli import cmdoptions
 from pip._internal.cli.base_command import Command
 from pip._internal.cli.status_codes import SUCCESS
diff --git a/tests/unit/test_index.py b/tests/unit/test_index.py
index cbbca03817e..589a268461f 100644
--- a/tests/unit/test_index.py
+++ b/tests/unit/test_index.py
@@ -2,10 +2,6 @@
 from typing import FrozenSet, List, Optional, Set, Tuple
 
 import pytest
-
-from pip._vendor.packaging.specifiers import SpecifierSet
-from pip._vendor.packaging.tags import Tag
-
 from pip._internal.index.collector import LinkCollector
 from pip._internal.index.package_finder import (
     CandidateEvaluator,
@@ -27,6 +23,9 @@
 from pip._internal.utils.compatibility_tags import get_supported
 from pip._internal.utils.hashes import Hashes
 
+from pip._vendor.packaging.specifiers import SpecifierSet
+from pip._vendor.packaging.tags import Tag
+
 from tests.lib import CURRENT_PY_VERSION_INFO
 from tests.lib.index import make_mock_candidate
 
diff --git a/tests/unit/test_link.py b/tests/unit/test_link.py
index a379d877b2c..bc6b9a8d648 100644
--- a/tests/unit/test_link.py
+++ b/tests/unit/test_link.py
@@ -1,7 +1,6 @@
 from typing import Optional
 
 import pytest
-
 from pip._internal.models.link import Link, links_equivalent
 from pip._internal.utils.hashes import Hashes
 
diff --git a/tests/unit/test_locations.py b/tests/unit/test_locations.py
index 884e0dd51e2..2f4a9806a88 100644
--- a/tests/unit/test_locations.py
+++ b/tests/unit/test_locations.py
@@ -14,7 +14,6 @@
 from unittest.mock import Mock
 
 import pytest
-
 from pip._internal.locations import SCHEME_KEYS, _should_use_sysconfig, get_scheme
 
 if sys.platform == "win32":
diff --git a/tests/unit/test_logging.py b/tests/unit/test_logging.py
index a227bd67fa2..dc372139899 100644
--- a/tests/unit/test_logging.py
+++ b/tests/unit/test_logging.py
@@ -6,7 +6,6 @@
 from unittest.mock import patch
 
 import pytest
-
 from pip._internal.utils.logging import (
     BrokenStdoutLoggingError,
     IndentingFormatter,
diff --git a/tests/unit/test_models.py b/tests/unit/test_models.py
index c09314e50cf..a835372223f 100644
--- a/tests/unit/test_models.py
+++ b/tests/unit/test_models.py
@@ -1,10 +1,10 @@
 """Tests for various classes in pip._internal.models"""
 
-from pip._vendor.packaging.version import parse as parse_version
-
 from pip._internal.models import candidate, index
 from pip._internal.models.link import Link
 
+from pip._vendor.packaging.version import parse as parse_version
+
 
 class TestPackageIndex:
     """Tests for pip._internal.models.index.PackageIndex"""
diff --git a/tests/unit/test_models_wheel.py b/tests/unit/test_models_wheel.py
index 46991e3487b..26fe61d6a78 100644
--- a/tests/unit/test_models_wheel.py
+++ b/tests/unit/test_models_wheel.py
@@ -1,11 +1,10 @@
 import pytest
-
-from pip._vendor.packaging.tags import Tag
-
 from pip._internal.exceptions import InvalidWheelFilename
 from pip._internal.models.wheel import Wheel
 from pip._internal.utils import compatibility_tags, deprecation
 
+from pip._vendor.packaging.tags import Tag
+
 
 class TestWheelFile:
     def test_std_wheel_pattern(self) -> None:
diff --git a/tests/unit/test_network_auth.py b/tests/unit/test_network_auth.py
index aec5e513ba5..537360fe41d 100644
--- a/tests/unit/test_network_auth.py
+++ b/tests/unit/test_network_auth.py
@@ -4,9 +4,8 @@
 import sys
 from typing import Any, Dict, Iterable, List, Optional, Tuple
 
-import pytest
-
 import pip._internal.network.auth
+import pytest
 from pip._internal.network.auth import MultiDomainBasicAuth
 
 from tests.lib.requests_mocks import MockConnection, MockRequest, MockResponse
diff --git a/tests/unit/test_network_cache.py b/tests/unit/test_network_cache.py
index af15acae450..4dfe7abace9 100644
--- a/tests/unit/test_network_cache.py
+++ b/tests/unit/test_network_cache.py
@@ -3,11 +3,10 @@
 from unittest.mock import Mock
 
 import pytest
+from pip._internal.network.cache import SafeFileCache
 
 from pip._vendor.cachecontrol.caches import FileCache
 
-from pip._internal.network.cache import SafeFileCache
-
 from tests.lib.filesystem import chmod
 
 
diff --git a/tests/unit/test_network_download.py b/tests/unit/test_network_download.py
index 14998d229bf..91652a16caf 100644
--- a/tests/unit/test_network_download.py
+++ b/tests/unit/test_network_download.py
@@ -3,7 +3,6 @@
 from typing import Dict
 
 import pytest
-
 from pip._internal.models.link import Link
 from pip._internal.network.download import (
     _prepare_download,
diff --git a/tests/unit/test_network_lazy_wheel.py b/tests/unit/test_network_lazy_wheel.py
index 5d97e9e3202..502687ea92e 100644
--- a/tests/unit/test_network_lazy_wheel.py
+++ b/tests/unit/test_network_lazy_wheel.py
@@ -1,9 +1,6 @@
 from typing import Iterator
 
 import pytest
-
-from pip._vendor.packaging.version import Version
-
 from pip._internal.exceptions import InvalidWheel
 from pip._internal.network.lazy_wheel import (
     HTTPRangeRequestUnsupported,
@@ -11,6 +8,8 @@
 )
 from pip._internal.network.session import PipSession
 
+from pip._vendor.packaging.version import Version
+
 from tests.lib import TestData
 from tests.lib.server import MockServer, file_response
 
diff --git a/tests/unit/test_network_session.py b/tests/unit/test_network_session.py
index fd00d5c606c..cde6f1ef8af 100644
--- a/tests/unit/test_network_session.py
+++ b/tests/unit/test_network_session.py
@@ -6,9 +6,6 @@
 from urllib.request import getproxies
 
 import pytest
-
-from pip._vendor import requests
-
 from pip import __version__
 from pip._internal.models.link import Link
 from pip._internal.network.session import (
@@ -17,6 +14,8 @@
     user_agent,
 )
 
+from pip._vendor import requests
+
 
 def get_user_agent() -> str:
     # These tests are testing the computation of the user agent, so we want to
diff --git a/tests/unit/test_network_utils.py b/tests/unit/test_network_utils.py
index 5911583feec..409fdc23faa 100644
--- a/tests/unit/test_network_utils.py
+++ b/tests/unit/test_network_utils.py
@@ -1,5 +1,4 @@
 import pytest
-
 from pip._internal.exceptions import NetworkConnectionError
 from pip._internal.network.utils import raise_for_status
 
diff --git a/tests/unit/test_operations_prepare.py b/tests/unit/test_operations_prepare.py
index 86e26c11801..7fd4b0ceab3 100644
--- a/tests/unit/test_operations_prepare.py
+++ b/tests/unit/test_operations_prepare.py
@@ -7,7 +7,6 @@
 from unittest.mock import Mock, patch
 
 import pytest
-
 from pip._internal.exceptions import HashMismatch
 from pip._internal.models.link import Link
 from pip._internal.network.download import Downloader
diff --git a/tests/unit/test_options.py b/tests/unit/test_options.py
index 8f3cf7de6a6..7d4316dbd23 100644
--- a/tests/unit/test_options.py
+++ b/tests/unit/test_options.py
@@ -4,9 +4,8 @@
 from tempfile import NamedTemporaryFile
 from typing import Any, Dict, Iterator, List, Tuple, Type, Union, cast
 
-import pytest
-
 import pip._internal.configuration
+import pytest
 from pip._internal.cli.main import main
 from pip._internal.commands import create_command
 from pip._internal.commands.configuration import ConfigurationCommand
diff --git a/tests/unit/test_packaging.py b/tests/unit/test_packaging.py
index 6b8c4cd37d8..a08aa2d3b1c 100644
--- a/tests/unit/test_packaging.py
+++ b/tests/unit/test_packaging.py
@@ -1,12 +1,11 @@
 from typing import Optional, Tuple
 
 import pytest
+from pip._internal.utils.packaging import check_requires_python, get_requirement
 
 from pip._vendor.packaging import specifiers
 from pip._vendor.packaging.requirements import Requirement
 
-from pip._internal.utils.packaging import check_requires_python, get_requirement
-
 
 @pytest.mark.parametrize(
     "version_info, requires_python, expected",
diff --git a/tests/unit/test_pep517.py b/tests/unit/test_pep517.py
index 4264bbdcac8..4233b073fcd 100644
--- a/tests/unit/test_pep517.py
+++ b/tests/unit/test_pep517.py
@@ -4,7 +4,6 @@
 from typing import Tuple
 
 import pytest
-
 from pip._internal.exceptions import InstallationError, InvalidPyProjectBuildRequires
 from pip._internal.req import InstallRequirement
 
diff --git a/tests/unit/test_pyproject_config.py b/tests/unit/test_pyproject_config.py
index d385cfb515d..471ad8ba049 100644
--- a/tests/unit/test_pyproject_config.py
+++ b/tests/unit/test_pyproject_config.py
@@ -1,7 +1,6 @@
 from typing import Dict, List
 
 import pytest
-
 from pip._internal.commands import create_command
 
 
diff --git a/tests/unit/test_req.py b/tests/unit/test_req.py
index e243a718725..9d15201ad51 100644
--- a/tests/unit/test_req.py
+++ b/tests/unit/test_req.py
@@ -10,10 +10,6 @@
 from unittest import mock
 
 import pytest
-
-from pip._vendor.packaging.markers import Marker
-from pip._vendor.packaging.requirements import Requirement
-
 from pip._internal.cache import WheelCache
 from pip._internal.commands import create_command
 from pip._internal.commands.install import InstallCommand
@@ -48,6 +44,9 @@
 )
 from pip._internal.resolution.legacy.resolver import Resolver
 
+from pip._vendor.packaging.markers import Marker
+from pip._vendor.packaging.requirements import Requirement
+
 from tests.lib import TestData, make_test_finder, requirements_file, wheel
 
 
diff --git a/tests/unit/test_req_dependency_group.py b/tests/unit/test_req_dependency_group.py
index b596f6fc5d7..a72316847fd 100644
--- a/tests/unit/test_req_dependency_group.py
+++ b/tests/unit/test_req_dependency_group.py
@@ -4,7 +4,6 @@
 from typing import Any
 
 import pytest
-
 from pip._internal.exceptions import InstallationError
 from pip._internal.req.req_dependency_group import parse_dependency_groups
 
diff --git a/tests/unit/test_req_file.py b/tests/unit/test_req_file.py
index 593eeba3594..63d4c59784c 100644
--- a/tests/unit/test_req_file.py
+++ b/tests/unit/test_req_file.py
@@ -9,9 +9,8 @@
 from typing import Any, Iterator, List, Optional, Protocol, Tuple, Union
 from unittest import mock
 
-import pytest
-
 import pip._internal.req.req_file  # this will be monkeypatched
+import pytest
 from pip._internal.exceptions import InstallationError, RequirementsFileParseError
 from pip._internal.index.package_finder import PackageFinder
 from pip._internal.models.format_control import FormatControl
diff --git a/tests/unit/test_req_install.py b/tests/unit/test_req_install.py
index 79828525da4..3370780fecc 100644
--- a/tests/unit/test_req_install.py
+++ b/tests/unit/test_req_install.py
@@ -3,9 +3,6 @@
 from pathlib import Path
 
 import pytest
-
-from pip._vendor.packaging.requirements import Requirement
-
 from pip._internal.exceptions import InstallationError
 from pip._internal.req.constructors import (
     install_req_from_line,
@@ -13,6 +10,8 @@
 )
 from pip._internal.req.req_install import InstallRequirement
 
+from pip._vendor.packaging.requirements import Requirement
+
 
 class TestInstallRequirementBuildDirectory:
     # no need to test symlinks on Windows
diff --git a/tests/unit/test_req_uninstall.py b/tests/unit/test_req_uninstall.py
index 0372eac9bd9..2e2be14ab81 100644
--- a/tests/unit/test_req_uninstall.py
+++ b/tests/unit/test_req_uninstall.py
@@ -4,9 +4,8 @@
 from typing import Iterator, List, Optional, Tuple
 from unittest.mock import Mock
 
-import pytest
-
 import pip._internal.req.req_uninstall
+import pytest
 from pip._internal.req.req_uninstall import (
     StashedUninstallPathSet,
     UninstallPathSet,
diff --git a/tests/unit/test_resolution_legacy_resolver.py b/tests/unit/test_resolution_legacy_resolver.py
index 489f678c561..671349eff01 100644
--- a/tests/unit/test_resolution_legacy_resolver.py
+++ b/tests/unit/test_resolution_legacy_resolver.py
@@ -5,10 +5,6 @@
 from unittest import mock
 
 import pytest
-
-from pip._vendor.packaging.specifiers import SpecifierSet
-from pip._vendor.packaging.utils import NormalizedName
-
 from pip._internal.exceptions import (
     InstallationError,
     NoneMetadataError,
@@ -23,6 +19,9 @@
     _check_dist_requires_python,
 )
 
+from pip._vendor.packaging.specifiers import SpecifierSet
+from pip._vendor.packaging.utils import NormalizedName
+
 from tests.lib import TestData, make_test_finder
 from tests.lib.index import make_mock_candidate
 
diff --git a/tests/unit/test_self_check_outdated.py b/tests/unit/test_self_check_outdated.py
index fba794bc810..55834ec1a26 100644
--- a/tests/unit/test_self_check_outdated.py
+++ b/tests/unit/test_self_check_outdated.py
@@ -10,13 +10,12 @@
 
 import pytest
 from freezegun import freeze_time
-
-from pip._vendor.packaging.version import Version
-
 from pip._internal import self_outdated_check
 from pip._internal.self_outdated_check import UpgradePrompt, pip_self_version_check
 from pip._internal.utils.misc import ExternallyManagedEnvironment
 
+from pip._vendor.packaging.version import Version
+
 
 @pytest.mark.parametrize(
     "key, expected",
diff --git a/tests/unit/test_target_python.py b/tests/unit/test_target_python.py
index 63e77a3d8a9..0b04d97a4c6 100644
--- a/tests/unit/test_target_python.py
+++ b/tests/unit/test_target_python.py
@@ -2,11 +2,10 @@
 from unittest import mock
 
 import pytest
+from pip._internal.models.target_python import TargetPython
 
 from pip._vendor.packaging.tags import Tag
 
-from pip._internal.models.target_python import TargetPython
-
 from tests.lib import CURRENT_PY_VERSION_INFO, pyversion
 
 
diff --git a/tests/unit/test_urls.py b/tests/unit/test_urls.py
index 0c145255080..7e20dd873d0 100644
--- a/tests/unit/test_urls.py
+++ b/tests/unit/test_urls.py
@@ -3,7 +3,6 @@
 import urllib.request
 
 import pytest
-
 from pip._internal.utils.urls import path_to_url, url_to_path
 
 
diff --git a/tests/unit/test_utils.py b/tests/unit/test_utils.py
index e2d1710739a..118bdee0411 100644
--- a/tests/unit/test_utils.py
+++ b/tests/unit/test_utils.py
@@ -14,9 +14,6 @@
 from unittest.mock import Mock
 
 import pytest
-
-from pip._vendor.packaging.requirements import Requirement
-
 from pip._internal.exceptions import HashMismatch, HashMissing, InstallationError
 from pip._internal.utils.deprecation import PipDeprecationWarning, deprecated
 from pip._internal.utils.egg_link import egg_link_path_from_location
@@ -50,6 +47,8 @@
 )
 from pip._internal.utils.setuptools_build import make_setuptools_shim_args
 
+from pip._vendor.packaging.requirements import Requirement
+
 
 class Tests_EgglinkPath:
     "util.egg_link_path_from_location() tests"
diff --git a/tests/unit/test_utils_compatibility_tags.py b/tests/unit/test_utils_compatibility_tags.py
index f09c451b8ee..9d68a7b9898 100644
--- a/tests/unit/test_utils_compatibility_tags.py
+++ b/tests/unit/test_utils_compatibility_tags.py
@@ -3,7 +3,6 @@
 from unittest.mock import patch
 
 import pytest
-
 from pip._internal.utils import compatibility_tags
 
 
diff --git a/tests/unit/test_utils_retry.py b/tests/unit/test_utils_retry.py
index bdb2f23b480..6c965e46915 100644
--- a/tests/unit/test_utils_retry.py
+++ b/tests/unit/test_utils_retry.py
@@ -5,7 +5,6 @@
 from unittest.mock import Mock
 
 import pytest
-
 from pip._internal.utils.retry import retry
 
 
diff --git a/tests/unit/test_utils_subprocess.py b/tests/unit/test_utils_subprocess.py
index 65e7d6fdca9..17dfd7b5114 100644
--- a/tests/unit/test_utils_subprocess.py
+++ b/tests/unit/test_utils_subprocess.py
@@ -4,7 +4,6 @@
 from typing import List, Optional, Tuple, Type
 
 import pytest
-
 from pip._internal.cli.spinners import SpinnerInterface
 from pip._internal.exceptions import InstallationSubprocessError
 from pip._internal.utils.logging import VERBOSE
diff --git a/tests/unit/test_utils_temp_dir.py b/tests/unit/test_utils_temp_dir.py
index a6cd0d0e5af..b9de985393c 100644
--- a/tests/unit/test_utils_temp_dir.py
+++ b/tests/unit/test_utils_temp_dir.py
@@ -7,7 +7,6 @@
 from unittest import mock
 
 import pytest
-
 from pip._internal.utils import temp_dir
 from pip._internal.utils.misc import ensure_dir
 from pip._internal.utils.temp_dir import (
diff --git a/tests/unit/test_utils_unpacking.py b/tests/unit/test_utils_unpacking.py
index 5f89751311a..5003e5b192d 100644
--- a/tests/unit/test_utils_unpacking.py
+++ b/tests/unit/test_utils_unpacking.py
@@ -11,7 +11,6 @@
 from typing import List, Tuple
 
 import pytest
-
 from pip._internal.exceptions import InstallationError
 from pip._internal.utils.unpacking import is_within_directory, untar_file, unzip_file
 
diff --git a/tests/unit/test_utils_virtualenv.py b/tests/unit/test_utils_virtualenv.py
index 94461c6d89e..d22ab78b584 100644
--- a/tests/unit/test_utils_virtualenv.py
+++ b/tests/unit/test_utils_virtualenv.py
@@ -6,7 +6,6 @@
 from typing import List, Optional
 
 import pytest
-
 from pip._internal.utils import virtualenv
 
 
diff --git a/tests/unit/test_utils_wheel.py b/tests/unit/test_utils_wheel.py
index b31b51ccae0..77aab46f2c7 100644
--- a/tests/unit/test_utils_wheel.py
+++ b/tests/unit/test_utils_wheel.py
@@ -7,7 +7,6 @@
 from zipfile import ZipFile
 
 import pytest
-
 from pip._internal.exceptions import UnsupportedWheel
 from pip._internal.utils import wheel
 
diff --git a/tests/unit/test_vcs.py b/tests/unit/test_vcs.py
index c9a026968f4..b096fc06542 100644
--- a/tests/unit/test_vcs.py
+++ b/tests/unit/test_vcs.py
@@ -4,7 +4,6 @@
 from unittest import TestCase, mock
 
 import pytest
-
 from pip._internal.exceptions import BadCommand, InstallationError
 from pip._internal.utils.misc import HiddenText, hide_url, hide_value
 from pip._internal.utils.subprocess import CommandArgs
diff --git a/tests/unit/test_wheel.py b/tests/unit/test_wheel.py
index 7b44a59e4a4..051879c975c 100644
--- a/tests/unit/test_wheel.py
+++ b/tests/unit/test_wheel.py
@@ -12,9 +12,6 @@
 from unittest.mock import patch
 
 import pytest
-
-from pip._vendor.packaging.requirements import Requirement
-
 from pip._internal.exceptions import InstallationError
 from pip._internal.locations import get_scheme
 from pip._internal.models.direct_url import (
@@ -34,6 +31,8 @@
 from pip._internal.utils.misc import hash_file
 from pip._internal.utils.unpacking import unpack_file
 
+from pip._vendor.packaging.requirements import Requirement
+
 from tests.lib import DATA_DIR, TestData, assert_paths_equal
 from tests.lib.wheel import make_wheel
 
diff --git a/tests/unit/test_wheel_builder.py b/tests/unit/test_wheel_builder.py
index d3d6801ede6..7bd11dfe962 100644
--- a/tests/unit/test_wheel_builder.py
+++ b/tests/unit/test_wheel_builder.py
@@ -5,7 +5,6 @@
 from typing import Optional, cast
 
 import pytest
-
 from pip._internal import wheel_builder
 from pip._internal.models.link import Link
 from pip._internal.operations.build.wheel_legacy import format_command_result