Path: csiph.com!usenet.pasdenom.info!weretis.net!feeder1.news.weretis.net!feeder4.news.weretis.net!rt.uk.eu.org!newsfeed.xs4all.nl!newsfeed3a.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail
Return-Path: <python-python-list@m.gmane.org>
X-Original-To: python-list@python.org
Delivered-To: python-list@mail.python.org
X-Spam-Status: OK 0.001
X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'scripts': 0.03; 'string.': 0.05; 'pep': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'subject:files': 0.09; 'subject:modules': 0.09; 'used.': 0.09; 'python': 0.11; 'easier.': 0.16; 'from:addr:behnel.de': 0.16; 'from:addr:stefan_ml': 0.16; 'from:name:stefan behnel': 0.16; 'in- memory': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'situation.': 0.16; 'url:peps': 0.16; 'wrote:': 0.18; 'module': 0.19; 'implementing': 0.19; 'stefan': 0.19; '>>>': 0.22; 'code,': 0.22; 'memory': 0.22; 'load': 0.23; 'header:User-Agent:1': 0.23; 'url:dev': 0.24; 'looks': 0.24; '(or': 0.24; "i've": 0.25; 'source': 0.25; 'script': 0.25; 'skip:" 20': 0.27; 'header:X-Complaints-To:1': 0.27; 'header:In-Reply-To:1': 0.27; "doesn't": 0.30; "i'm": 0.30; 'code': 0.31; 'loading': 0.31; 'though.': 0.31; 'supposed': 0.32; 'interface': 0.32; 'regular': 0.32; 'url:python': 0.33; 'totally': 0.33; 'subject:from': 0.34; "can't": 0.35; 'anybody': 0.35; 'received:84': 0.35; 'but': 0.35; 'there': 0.35; 'c++': 0.36; 'method': 0.36; 'url:org': 0.36; 'integration': 0.37; 'implement': 0.38; 'url:library': 0.38; 'to:addr:python-list': 0.38; 'files': 0.38; 'pm,': 0.38; 'does': 0.39; 'embedded': 0.39; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'called': 0.40; 'how': 0.40; 'url:3': 0.61; 'name': 0.63; 'skip:n 10': 0.64; 'finally': 0.65; 'within': 0.65; 'between': 0.67; 'url:4': 0.69; 'received:arcor-ip.net': 0.84; 'received:pools.arcor-ip.net': 0.84; 'years:': 0.84; 'step.': 0.91
X-Injected-Via-Gmane: http://gmane.org/
To: python-list@python.org
From: Stefan Behnel <stefan_ml@behnel.de>
Subject: Re: Loading modules from files through C++
Date: Sat, 17 May 2014 15:26:53 +0200
References: <5376ACE7.8030706@rptd.ch> <ll7iu1$oge$1@ger.gmane.org> <53775D68.2010009@rptd.ch>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-Gmane-NNTP-Posting-Host: dslb-084-056-038-254.pools.arcor-ip.net
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0
In-Reply-To: <53775D68.2010009@rptd.ch>
X-BeenThere: python-list@python.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe: <https://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive: <http://mail.python.org/pipermail/python-list/>
List-Post: <mailto:python-list@python.org>
List-Help: <mailto:python-list-request@python.org?subject=help>
List-Subscribe: <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups: comp.lang.python
Message-ID: <mailman.10084.1400333233.18130.python-list@python.org>
Lines: 35
NNTP-Posting-Host: 2001:888:2000:d::a6
X-Trace: 1400333233 news.xs4all.nl 2844 [2001:888:2000:d::a6]:37202
X-Complaints-To: abuse@xs4all.nl
Xref: csiph.com comp.lang.python:71684

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