--- a/mercurial/smartset.py	Thu Feb 02 17:35:01 2023 +0100
+++ b/mercurial/smartset.py	Thu Feb 02 17:35:09 2023 +0100
@@ -137,7 +137,7 @@
 
         This is part of the mandatory API for smartset."""
         # builtin cannot be cached. but do not needs to
-        if cache and util.safehasattr(condition, b'__code__'):
+        if cache and util.safehasattr(condition, '__code__'):
             condition = util.cachefunc(condition)
         return filteredset(self, condition, condrepr)