python
diff --git a/‎Lib/pathlib/__init__.py
Lines changed: 8 additions & 1 deletion b/‎Lib/pathlib/__init__.py
Lines changed: 8 additions & 1 deletion
diff --git a/‎Lib/pathlib/_os.py
Lines changed: 17 additions & 0 deletions b/‎Lib/pathlib/_os.py
Lines changed: 17 additions & 0 deletions
diff --git a/‎Lib/pathlib/types.py
Lines changed: 6 additions & 3 deletions b/‎Lib/pathlib/types.py
Lines changed: 6 additions & 3 deletions
@@ -17,6 +17,13 @@
 from stat import S_ISDIR, S_ISREG, S_ISSOCK, S_ISBLK, S_ISCHR, S_ISFIFO
 from _collections_abc import Sequence
 
+# types
+if False:
+    from types import ModuleType
+
+    pwd: ModuleType | None
+    grp: ModuleType | None
+
 try:
     import pwd
 except ImportError:
@@ -26,7 +33,7 @@
 except ImportError:
     grp = None
 
-from pathlib._os import (
+from ._os import (
     PathInfo, DirEntryInfo,
     ensure_different_files, ensure_distinct_paths,
     copyfile2, copyfileobj, magic_open, copy_info,
 
@@ -7,6 +7,23 @@
 import io
 import os
 import sys
+
+# typing
+if False:
+    from collections.abc import Callable
+    from types import ModuleType
+
+    type CopyFunc = Callable[[int, int], None]
+
+    fcntl: ModuleType | None
+    posix: ModuleType | None
+    _winapi: ModuleType | None
+    _ficlone: CopyFunc | None
+    _fcopyfile: CopyFunc | None
+    _copy_file_range: CopyFunc | None
+    _sendfile: CopyFunc | None
+    copyfile2: CopyFunc | None
+
 try:
     import fcntl
 except ImportError:
 
@@ -13,10 +13,11 @@
 from abc import ABC, abstractmethod
 from collections.abc import Callable, Iterator, Sequence
 from glob import _PathGlobber
-from pathlib._os import magic_open, ensure_distinct_paths, ensure_different_files, copyfileobj
-from pathlib import PurePath, Path
 from typing import Protocol, runtime_checkable
 
+from . import PurePath, Path
+from ._os import magic_open, ensure_distinct_paths, ensure_different_files, copyfileobj
+
 # typing
 if False:
     from typing import Any, BinaryIO, Literal, Self
@@ -308,7 +309,9 @@ def walk(
         follow_symlinks: bool = False,
     ) -> Iterator[tuple[Self, list[str], list[str]]]:
         """Walk the directory tree from this directory, similar to os.walk()."""
-        paths = [self]
+        dirnames: list[str]
+        filenames: list[str]
+        paths: list[Self | tuple[Self, list[str], list[str]]] = [self]
         while paths:
             path = paths.pop()
             if isinstance(path, tuple):