fixed as suggestions

Author: dynamicy

Lib/pathlib/__init__.py

@@ -25,10 +25,6 @@
     import grp
 except ImportError:
     grp = None
-try:
-    import _winapi
-except ImportError:
-    _winapi = None
 
 from pathlib._os import (
     PathInfo, DirEntryInfo,
@@ -1151,7 +1147,8 @@ def _copy_from_file(self, source, preserve_metadata=False):
             try:
                 copyfile2(source_path, str(self))
             except OSError as exc:
-                if hasattr(exc, "winerror") and exc.winerror in (5, 1314):
+                # On Windows, OSError from file operations is guaranteed to have winerror attribute
+                if exc.winerror in (5, 1314):
                     # ERROR_ACCESS_DENIED (5) or ERROR_PRIVILEGE_NOT_HELD (1314)
                     self._copy_from_file_fallback(source, preserve_metadata)
                     return

Misc/NEWS.d/next/Library/2025-09-18-16-31-45.gh-issue-139135.hL3fZ2.rst

@@ -1 +1 @@
-Fix ``pathlib.Path.copy()`` failing on Windows when copying files that require elevated privileges (e.g., hidden or system files) by adding a fallback mechanism when ``copyfile2`` encounters privilege-related errors.
+Fix :meth:`pathlib.Path.copy` failing on Windows when copying files that require elevated privileges (e.g., hidden or system files) by adding a fallback mechanism when ``CopyFile2()`` encounters privilege-related errors.