--- a/hgdemandimport/demandimportpy3.py	Fri Dec 16 17:46:20 2022 +0100
+++ b/hgdemandimport/demandimportpy3.py	Wed Jan 04 17:15:19 2023 -0500
@@ -37,6 +37,8 @@
     the ignore list.
     """
 
+    _HAS_DYNAMIC_ATTRIBUTES = True  # help pytype not flag self.loader
+
     def exec_module(self, module):
         """Make the module load lazily."""
         with tracing.log('demandimport %s', module):