[Python-ideas] socket module: plain stuples vs named tuples

[INADA Naoki]

Namedtuple in Python make startup time slow.
So I'm very conservative to convert tuple to namedtuple in Python.
INADA Naoki  <songofacandy at gmail.com>


On Tue, Jun 20, 2017 at 7:27 AM, Victor Stinner
<victor.stinner at 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" <guido at 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.stinner at gmail.com>
>> wrote:
>>>
>>> Hi,
>>>
>>> 2017-06-13 22:13 GMT+02:00 Thomas Güttler <guettliml at 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
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>>
>>
>>
>>
>> --
>> --Guido van Rossum (python.org/~guido)
>
>
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