mercurial/ui.py

--- a/mercurial/ui.py	Sun Oct 06 14:51:45 2019 -0400
+++ b/mercurial/ui.py	Sun Oct 06 14:58:42 2019 -0400
@@ -22,7 +22,10 @@
 
 from .i18n import _
 from .node import hex
-from .pycompat import open
+from .pycompat import (
+    open,
+    setattr,
+)
 
 from . import (
     color,