Issue #20589: Invoking Path.owner() and Path.group() on Windows now raise

NotImplementedError instead of ImportError.

2 files changed, 15 insertions, 0 deletions

diff --git a/Lib/pathlib.py b/Lib/pathlib.py
index 5169ff5..ed31ddb 100644
--- a/Lib/pathlib.py
+++ b/Lib/pathlib.py
@@ -1425,3 +1425,9 @@ class PosixPath(Path, PurePosixPath):
 
 class WindowsPath(Path, PureWindowsPath):
     __slots__ = ()
+
+    def owner(self):
+        raise NotImplementedError("Path.owner() is unsupported on this system")
+
+    def group(self):
+        raise NotImplementedError("Path.group() is unsupported on this system")
diff --git a/Lib/test/test_pathlib.py b/Lib/test/test_pathlib.py
index 9a98d46..451e41f 100644
--- a/Lib/test/test_pathlib.py
+++ b/Lib/test/test_pathlib.py
@@ -1156,6 +1156,15 @@ class PureWindowsPathTest(_BasePurePathTest, unittest.TestCase):
         # UNC paths are never reserved
         self.assertIs(False, P('//my/share/nul/con/aux').is_reserved())
 
+    def test_owner(self):
+        P = self.cls
+        with self.assertRaises(NotImplementedError):
+            P('c:/').owner()
+
+    def test_group(self):
+        P = self.cls
+        with self.assertRaises(NotImplementedError):
+            P('c:/').group()
 
 class PurePathTest(_BasePurePathTest, unittest.TestCase):
     cls = pathlib.PurePath