--- a/mercurial/statprof.py	Sun Oct 06 13:17:19 2019 -0400
+++ b/mercurial/statprof.py	Sun Oct 06 13:28:56 2019 -0400
@@ -114,6 +114,7 @@
 import threading
 import time
 
+from .pycompat import open
 from . import (
     encoding,
     pycompat,