--- a/mercurial/policy.py	Sun Oct 06 16:39:13 2019 -0400
+++ b/mercurial/policy.py	Sun Oct 06 16:55:18 2019 -0400
@@ -10,6 +10,8 @@
 import os
 import sys
 
+from .pycompat import getattr
+
 # Rules for how modules can be loaded. Values are:
 #
 #    c - require C extensions