Hi Philippe, Maybe the implementation of `_GenericAlias` should live in Objects/typobject.c, and be a part of the public API. Then the "|" overload on PyType_Type (also there) can reference it directly, it can be exported from Python/bltinsmodule.c, and typing can reference it as a builtin.
--Guido On Mon, Oct 7, 2019 at 8:14 AM Philippe Prados <philippe.pra...@gmail.com> wrote: > Hello, > > I try to implement a *proof of concept* of Pep-0604 > <https://www.python.org/dev/peps/pep-0604/>. > > To do this, the _GenericAlias must be in builtin, because I would like to > update issubclass() and isinstance() to accept Union. > These methods are in builtin, and must be run without others modules. > > But, the class _GenericAlias is in typing module, with the Python > implementation in Lib/typing.py, and the C implementation is in > Modules/_ctypes. > > For you, what is the best approach to move the _GenericAlias and all > dependencies in the builtin "module" ? > > Philippe > _______________________________________________ > 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/FVDIL2DG3EP7CO452MUZYPATN4R2CEHN/ > 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/>
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