--- a/mercurial/testing/revlog.py	Fri Mar 12 17:22:35 2021 -0500
+++ b/mercurial/testing/revlog.py	Sat Mar 13 00:38:59 2021 -0500
@@ -24,7 +24,7 @@
 
 
 try:
-    from ..cext import parsers as cparsers
+    from ..cext import parsers as cparsers  # pytype: disable=import-error
 except ImportError:
     cparsers = None