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Date: Sat, 17 May 2014 15:49:47 +0200
From: =?UTF-8?B?Um9sYW5kIFBsw7xzcw==?= <roland@rptd.ch>
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To: python-list@python.org
Subject: Re: Loading modules from files through C++
References: <5376ACE7.8030706@rptd.ch> <ll7iu1$oge$1@ger.gmane.org> <53775D68.2010009@rptd.ch> <ll7o30$pc3$1@ger.gmane.org>
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I'm willing to go to Py3 but only if the solution to the problem is
simpler than getting it fixed in Py2. So some questions first:

- does this importlib stuff you showed there apply to C++ land (I need
to fully drive it from C++ not Python code)?
- is the C++ land of Py3 similar to Py2 or totally different?

On 05/17/2014 03:26 PM, Stefan Behnel wrote:
> Roland Pl=C3=BCss, 17.05.2014 15:00:
>> On 05/17/2014 01:58 PM, Stefan Behnel wrote:
>>> Roland Pl=C3=BCss, 17.05.2014 02:27:
>>>> I'm using Python in an embedded situation. In particular I have to l=
oad
>>>> python scripts through a memory interface so regular python module
>>>> loading can not be used. I got working so far a module loader object=

>>>> I've added using C++ to sys.meta_path . Now I'm totally stuck at the=

>>>> finally loading step.
>>>>
>>>> I've got this a C++ loader method "load_module(fullname)" which does=

>>>> load the requested module script files into a null-terminated string=
=2E I
>>>> know that "load_module" has to return the module PyObject*. But I ca=
n't
>>>> get the python source in the c-string into a module PyObject*.
>>>> [...]
>>>> Can anybody help how in gods name one is supposed to create a module=

>>>> from an in-memory c-string when called from within load_module (or
>>>> anywhere)?
>>> Looks like you want to implement a SourceLoader:
>>>
>>> https://docs.python.org/3.4/library/importlib.html#importlib.abc.Sour=
ceLoader
>>>
>>> I recommend implementing this in Python code instead of C code, thoug=
h.
>>> Much easier. Cython can help with the integration between both.
>> That doesn't work in 2.x, doesn't it?
> Is there a reason you have to use Py2?
>
> Anyway, PEP 302 predates Py3 by a couple of years:
>
> http://legacy.python.org/dev/peps/pep-0302/
>
> Stefan
>
>


--=20
Yours sincerely
Pl=C3=BCss Roland

Leader and Head Programmer
- Game: Epsylon ( http://www.indiedb.com/games/epsylon )
- Game Engine: Drag[en]gine ( http://www.indiedb.com/engines/dragengine
, http://dragengine.rptd.ch/wiki )
- Normal Map Generator: DENormGen ( http://epsylon.rptd.ch/denormgen.php =
)
- As well as various Blender export scripts und game tools


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