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Changes between Version 3 and Version 4 of Ticket #23541

-              v3
+              v4
 ...
     operations = [
-        migrations.RunPython(
-            code=x
-        ),
         migrations.RunSQL(
             sql="""select exec(format('alter table %I rename to %I', tablename, regexp_replace(tablename, '^hello, 'goodbye'))) from pg_tables where tablename like 'hello%';"""