diff --git a/pylint/lint/parallel.py b/pylint/lint/parallel.py
index 58ce867ec80..92af977dc32 100644
--- a/pylint/lint/parallel.py
+++ b/pylint/lint/parallel.py
@@ -135,9 +135,7 @@ def check_parallel(
     # The linter is inherited by all the pool's workers, i.e. the linter
     # is identical to the linter object here. This is required so that
     # a custom PyLinter object can be used.
-    initializer = functools.partial(
-        _worker_initialize, extra_sys_paths=extra_sys_paths
-    )
+    initializer = functools.partial(_worker_initialize, extra_sys_paths=extra_sys_paths)
     with ProcessPoolExecutor(
         max_workers=jobs, initializer=initializer, initargs=(dill.dumps(linter),)
     ) as executor:
diff --git a/pylint/lint/pylinter.py b/pylint/lint/pylinter.py
index c272d02b7e2..1195af0b937 100644
--- a/pylint/lint/pylinter.py
+++ b/pylint/lint/pylinter.py
@@ -50,9 +50,9 @@
 from pylint.lint.utils import (
     _is_relative_to,
     augmented_sys_path,
-    realpath_transformer,
     get_fatal_error_message,
     prepare_crash_report,
+    realpath_transformer,
 )
 from pylint.message import Message, MessageDefinition, MessageDefinitionStore
 from pylint.reporters.base_reporter import BaseReporter
@@ -75,8 +75,7 @@
 class GetAstProtocol(Protocol):
     def __call__(
         self, filepath: str, modname: str, data: str | None = None
-    ) -> nodes.Module:
-        ...
+    ) -> nodes.Module: ...
 
 
 def _read_stdin() -> str:
@@ -310,9 +309,9 @@ def __init__(
         """Dictionary of possible but non-initialized reporters."""
 
         # Attributes for checkers and plugins
-        self._checkers: defaultdict[
-            str, list[checkers.BaseChecker]
-        ] = collections.defaultdict(list)
+        self._checkers: defaultdict[str, list[checkers.BaseChecker]] = (
+            collections.defaultdict(list)
+        )
         """Dictionary of registered and initialized checkers."""
         self._dynamic_plugins: dict[str, ModuleType | ModuleNotFoundError | bool] = {}
         """Set of loaded plugin names."""
@@ -674,7 +673,9 @@ def check(self, files_or_modules: Sequence[str]) -> None:
             }
         )
         # Prefer package paths detected per module over user-defined PYTHONPATH additions
-        extra_sys_paths = extra_packages_paths + realpath_transformer(self.config.pythonpath)
+        extra_sys_paths = extra_packages_paths + realpath_transformer(
+            self.config.pythonpath
+        )
 
         # TODO: Move the parallel invocation into step 3 of the checking process
         if not self.config.from_stdin and self.config.jobs > 1:
diff --git a/pylint/pyreverse/main.py b/pylint/pyreverse/main.py
index a1641c758cc..fb1d630ca09 100644
--- a/pylint/pyreverse/main.py
+++ b/pylint/pyreverse/main.py
@@ -305,7 +305,9 @@ def run(self, args: list[str]) -> int:
             {discover_package_path(arg, self.config.source_roots) for arg in args}
         )
         # Prefer package paths detected per module over global PYTHONPATH additons
-        extra_sys_paths = extra_packages_paths + realpath_transformer(self.config.pythonpath)
+        extra_sys_paths = extra_packages_paths + realpath_transformer(
+            self.config.pythonpath
+        )
         with augmented_sys_path(extra_sys_paths):
             project = project_from_files(
                 args,
diff --git a/tests/lint/unittest_lint.py b/tests/lint/unittest_lint.py
index 755301f6951..2a8def887cd 100644
--- a/tests/lint/unittest_lint.py
+++ b/tests/lint/unittest_lint.py
@@ -1250,7 +1250,9 @@ def test_import_sibling_module_from_namespace(initialized_linter: PyLinter) -> N
     assert not linter.stats.by_msg
 
 
-def test_import_external_module_with_relative_pythonpath_config(initialized_linter: PyLinter) -> None:
+def test_import_external_module_with_relative_pythonpath_config(
+    initialized_linter: PyLinter,
+) -> None:
     """Given a module that imports an external module, ensure that the external module
     is found when the path to the external module is configured in `main.pythonpath`.
 
diff --git a/tests/test_check_parallel.py b/tests/test_check_parallel.py
index f59ae5c2b40..77f23bab95e 100644
--- a/tests/test_check_parallel.py
+++ b/tests/test_check_parallel.py
@@ -186,9 +186,7 @@ def test_worker_initialize(self) -> None:
     def test_worker_initialize_with_package_paths(self) -> None:
         linter = PyLinter(reporter=Reporter())
         with augmented_sys_path([]):
-            worker_initialize(
-                linter=dill.dumps(linter), extra_sys_paths=["fake-path"]
-            )
+            worker_initialize(linter=dill.dumps(linter), extra_sys_paths=["fake-path"])
             assert "fake-path" in sys.path
 
     def test_worker_initialize_reregisters_custom_plugins(self) -> None: