[3.9] gh-136755: Ignore additional errors in ntpath.realpath (GH-27574)

Lib/ntpath.py

@@ -588,12 +588,15 @@ def _getfinalpathname_nonstrict(path, ignored_error=OSError):
         # 21: ERROR_NOT_READY (implies drive with no media)
         # 32: ERROR_SHARING_VIOLATION (probably an NTFS paging file)
         # 50: ERROR_NOT_SUPPORTED
+        # 53: ERROR_BAD_NETPATH
+        # 65: ERROR_NETWORK_ACCESS_DENIED
         # 67: ERROR_BAD_NET_NAME (implies remote server unavailable)
         # 87: ERROR_INVALID_PARAMETER
         # 123: ERROR_INVALID_NAME
+        # 161: ERROR_BAD_PATHNAME
         # 1920: ERROR_CANT_ACCESS_FILE
         # 1921: ERROR_CANT_RESOLVE_FILENAME (implies unfollowable symlink)
-        allowed_winerror = 1, 2, 3, 5, 21, 32, 50, 67, 87, 123, 1920, 1921
+        allowed_winerror = 1, 2, 3, 5, 21, 32, 50, 53, 65, 67, 87, 123, 161, 1920, 1921
 
         # Non-strict algorithm is to find as much of the target directory
         # as we can and join the rest.

Misc/NEWS.d/next/Library/2021-08-03-05-31-00.bpo-44817.wOW_Qn.rst

@@ -0,0 +1,2 @@
+Ignore WinError 53 (ERROR_BAD_NETPATH), 65 (ERROR_NETWORK_ACCESS_DENIED)
+and 161 (ERROR_BAD_PATHNAME) when using ntpath.realpath().