1 files changed, 4 insertions, 1 deletions
diff --git a/Lib/pathlib.py b/Lib/pathlib.py
index 178c5b981d..531a699a40 100644
--- a/Lib/pathlib.py
+++ b/Lib/pathlib.py
@@ -630,7 +630,10 @@ class _PathParents(Sequence):
             return len(self._parts)
 
     def __getitem__(self, idx):
-        if idx < 0 or idx >= len(self):
+        if isinstance(idx, slice):
+            return tuple(self[i] for i in range(*idx.indices(len(self))))
+
+        if idx >= len(self) or idx < -len(self):
             raise IndexError(idx)
         return self._pathcls._from_parsed_parts(self._drv, self._root,
                                                 self._parts[:-idx - 1])