--- a/mercurial/smartset.py	Mon Feb 21 13:03:43 2022 -0700
+++ b/mercurial/smartset.py	Mon Feb 21 13:08:28 2022 -0700
@@ -20,7 +20,7 @@
     return pycompat.sysbytes(type(o).__name__).lstrip(b'_')
 
 
-class abstractsmartset(object):
+class abstractsmartset:
     def __nonzero__(self):
         """True if the smartset is not empty"""
         raise NotImplementedError()