diff -r 0d612db7047c -r c59eb1560c44 mercurial/lock.py
--- a/mercurial/lock.py	Sun Oct 06 16:39:13 2019 -0400
+++ b/mercurial/lock.py	Sun Oct 06 16:55:18 2019 -0400
@@ -16,6 +16,7 @@
 import warnings
 
 from .i18n import _
+from .pycompat import getattr
 
 from . import (
     encoding,