Issue #25596: Falls back to listdir in glob for bytes paths on Windows.

Lib/glob.py

@@ -118,6 +118,15 @@ def _iterdir(dirname, dironly):
         else:
             dirname = os.curdir
     try:
+        if os.name == 'nt' and isinstance(dirname, bytes):
+            names = os.listdir(dirname)
+            if dironly:
+                for name in names:
+                    if os.path.isdir(os.path.join(dirname, name)):
+                        yield name
+            else:
+                yield from names
+        else:
             with os.scandir(dirname) as it:
                 for entry in it:
                     try: