Issue #25583: Avoid incorrect errors raised by os.makedirs(exist_ok=True)
diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py
index 1f7e49c..e29b0d5 100644
--- a/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@ -971,6 +971,9 @@
os.makedirs(path, mode=mode, exist_ok=True)
os.umask(old_mask)
+ # Issue #25583: A drive root could raise PermissionError on Windows
+ os.makedirs(os.path.abspath('/'), exist_ok=True)
+
@unittest.skipUnless(hasattr(os, 'chown'), 'test needs os.chown')
def test_chown_uid_gid_arguments_must_be_index(self):
stat = os.stat(support.TESTFN)