STINNER Victor <vstin...@python.org> added the comment:
IMO 1.01x slower on a *microbenchmark* is not significant so it's ok. Thanks for checking. You pass a *type to isinstance() in bench_isinstance_check.py. You should pass *an instance* instead. Like (complete the (...) ;-)): runner.timeit(name="bench _abc_instancecheck", stmt="isinstance(obj, T)", setup = """from abc import ABC (...) obj = (1, 2, 3)""") Would you mind to fix your microbenchmark and re-run it? ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue40077> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com