Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #71688

Re: Loading modules from files through C++

Show key headers only | View raw

[Multipart message — attachments visible in raw view] - view raw

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 Plüss, 17.05.2014 15:00:
>> On 05/17/2014 01:58 PM, Stefan Behnel wrote:
>>> Roland Plüss, 17.05.2014 02:27:
>>>> I'm using Python in an embedded situation. In particular I have to load
>>>> 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. I
>>>> know that "load_module" has to return the module PyObject*. But I can'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.SourceLoader
>>>
>>> I recommend implementing this in Python code instead of C code, though.
>>> 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
>
>


-- 
Yours sincerely
Plüss 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

Back to comp.lang.python | Previous | Next | Find similar | Unroll thread

Thread

Re: Loading modules from files through C++ Roland Plüss <roland@rptd.ch> - 2014-05-17 15:49 +0200

csiph-web