diff -r 0d612db7047c -r c59eb1560c44 mercurial/hgweb/server.py
--- a/mercurial/hgweb/server.py	Sun Oct 06 16:39:13 2019 -0400
+++ b/mercurial/hgweb/server.py	Sun Oct 06 16:55:18 2019 -0400
@@ -17,7 +17,10 @@
 import wsgiref.validate
 
 from ..i18n import _
-from ..pycompat import open
+from ..pycompat import (
+    getattr,
+    open,
+)
 
 from .. import (
     encoding,