mercurial/commands.py

--- a/mercurial/commands.py	Sun Oct 06 13:17:19 2019 -0400
+++ b/mercurial/commands.py	Sun Oct 06 13:28:56 2019 -0400
@@ -22,6 +22,7 @@
     wdirhex,
     wdirrev,
 )
+from .pycompat import open
 from . import (
     archival,
     bookmarks,