Hi Jim, Let me echo Irit's response here -- what's your use case for subclassing ExceptionGroup?
Requiring that subclasses have a compatible __init__ or __new__ sounds like a bug magnet, since this can't be checked when the subclass is being defined, and it goes against conventional rules for those signatures. --Guido On Wed, Feb 24, 2021 at 6:22 AM Jim J. Jewett <jimjjew...@gmail.com> wrote: > The "no subclasses" seems pretty severe, particularly if you can't even > use marker attributes because it isn't clear when a different instance of > container ExceptionGroup will be substituted. > > The justification for this restriction was that .split() had to be be able > to instantiate ... wouldn't it be enough to just say that subclasses need a > compatible __init__ and __new__ for that reason, and then leave it to > consenting adults? > > -jJ > _______________________________________________ > Python-Dev mailing list -- python-dev@python.org > To unsubscribe send an email to python-dev-le...@python.org > https://mail.python.org/mailman3/lists/python-dev.python.org/ > Message archived at > https://mail.python.org/archives/list/python-dev@python.org/message/5OLFDKJCNKLIJJQMNYYLQGV53Z7ZTRC5/ > Code of Conduct: http://python.org/psf/codeofconduct/ > -- --Guido van Rossum (python.org/~guido) *Pronouns: he/him **(why is my pronoun here?)* <http://feministing.com/2015/02/03/how-using-they-as-a-singular-pronoun-can-change-the-world/>
_______________________________________________ Python-Dev mailing list -- python-dev@python.org To unsubscribe send an email to python-dev-le...@python.org https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/BXW7E5UEWIJDCA2JN5QTBZXDFKQ4RFEK/ Code of Conduct: http://python.org/psf/codeofconduct/
