Namedtuple in Python make startup time slow. So I'm very conservative to convert tuple to namedtuple in Python. INADA Naoki <songofaca...@gmail.com>
On Tue, Jun 20, 2017 at 7:27 AM, Victor Stinner <victor.stin...@gmail.com> wrote: > Oh, about the cost of writing C code, we started to enhance the socket > module in socket.py but keep the C code unchanged. I am thinking to the > support of enums. Some C functions are wrapped in Python. > > Victor > > Le 19 juin 2017 11:59 PM, "Guido van Rossum" <gu...@python.org> a écrit : >> >> There are examples in timemodule.c which went through a similar conversion >> from plain tuples to (sort-of) named tuples. I agree that upgrading the >> tuples returned by the socket module to named tuples would be nice, but it's >> a low priority project. Maybe someone interested can create a PR? (First >> open an issue stating that you're interested; point to this email from me to >> prevent that some other core dev just closes it again.) >> >> On Mon, Jun 19, 2017 at 2:24 PM, Victor Stinner <victor.stin...@gmail.com> >> wrote: >>> >>> Hi, >>> >>> 2017-06-13 22:13 GMT+02:00 Thomas Güttler <guettl...@thomas-guettler.de>: >>> > AFAIK the socket module returns plain tuples in Python3: >>> > >>> > https://docs.python.org/3/library/socket.html >>> > >>> > Why not use named tuples? >>> >>> For technical reasons: the socket module is mostly implemented in the >>> C language, and define a "named tuple" in C requires to implement a >>> "sequence" time which requires much more code than creating a tuple. >>> >>> In short, create a tuple is as simple as Py_BuildValue("OO", item1, >>> item2). >>> >>> Creating a "sequence" type requires something like 50 lines of code, >>> maybe more, I don't know exactly. >>> >>> Victor >>> _______________________________________________ >>> Python-ideas mailing list >>> Python-ideas@python.org >>> https://mail.python.org/mailman/listinfo/python-ideas >>> Code of Conduct: http://python.org/psf/codeofconduct/ >> >> >> >> >> -- >> --Guido van Rossum (python.org/~guido) > > > _______________________________________________ > Python-ideas mailing list > Python-ideas@python.org > https://mail.python.org/mailman/listinfo/python-ideas > Code of Conduct: http://python.org/psf/codeofconduct/ > _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
