Path: csiph.com!usenet.pasdenom.info!gegeweb.org!de-l.enfer-du-nord.net!feeder1.enfer-du-nord.net!feeds.phibee-telecom.net!newsfeed.xs4all.nl!newsfeed5.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path: <matteo.boscolo@boscolini.eu>
X-Original-To: python-list@python.org
Delivered-To: python-list@mail.python.org
X-Spam-Status: OK 0.008
X-Spam-Evidence: '*H*': 0.98; '*S*': 0.00; 'none,': 0.05; 'python': 0.09; 'idea?': 0.09; 'sep': 0.09; 'sub': 0.09; 'subject:()': 0.09; "'0',": 0.16; '(3,': 0.16; '49,': 0.16; '__del__': 0.16; 'corrupt': 0.16; 'from:addr:boscolini.eu': 0.16; 'from:addr:matteo.boscolo': 0.16; 'from:name:matteo boscolo': 0.16; 'it".': 0.16; 'none),': 0.16; 'none).': 0.16; 'sentinel': 0.16; 'wrote:': 0.17; 'tries': 0.17; 'are:': 0.20; 'object.': 0.22; "skip:' 40": 0.22; 'references': 0.23; 'non': 0.24; 'script': 0.24; 'header:In-Reply-To:1': 0.25; 'header:User- Agent:1': 0.26; 'am,': 0.27; 'object,': 0.27; "doesn't": 0.28; 'skip:( 20': 0.28; 'chris': 0.28; '>>>>': 0.29; 'crash': 0.29; "d'aprano": 0.29; 'steven': 0.29; 'objects': 0.29; 'class': 0.29; "skip:' 10": 0.30; 'code': 0.31; "skip:' 20": 0.32; 'could': 0.32; 'extract': 0.33; 'to:addr:python-list': 0.33; 'times.': 0.33; 'there': 0.35; 'but': 0.36; 'method': 0.36; 'does': 0.37; 'rather': 0.37; 'subject:: ': 0.38; 'object': 0.38; 'some': 0.38; 'delete': 0.38; 'to:addr:python.org': 0.39; 'application': 0.40; 'skip:w 30': 0.61; 'back': 0.62; 'received:62': 0.62; 'situation': 0.62; 'received:unknown': 0.63; 'become': 0.65; "'with'": 0.84; 'construct': 0.84; 'object:': 0.84; 'subject:skip:g 10': 0.84; 'viable': 0.84; 'urgently': 0.91; 'remember,': 0.93
Date: Mon, 17 Sep 2012 19:23:23 +0200
From: Matteo Boscolo <matteo.boscolo@boscolini.eu>
Organization: OmniaSolutions
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20120907 Thunderbird/15.0.1
MIME-Version: 1.0
To: python-list@python.org
Subject: Re: gc.get_objects()
References: <fb821c53-c786-4795-8f57-70d2eede03fe@googlegroups.com> <mailman.774.1347735926.27098.python-list@python.org> <52847c35-388c-4758-b72d-1d1859b788a3@googlegroups.com> <mailman.776.1347740899.27098.python-list@python.org> <8370412f-5176-45ff-87eb-72cbca5149d5@googlegroups.com> <mailman.781.1347774837.27098.python-list@python.org> <cdf072b2-7359-4417-b1e4-d984e4317091@googlegroups.com> <5055a1a6$0$29981$c3e8da3$5496439d@news.astraweb.com> <4f9d9a0b-539a-4b6a-af3e-b02d1f4006ee@googlegroups.com> <roy-262E6E.09221616092012@news.panix.com> <mailman.789.1347802379.27098.python-list@python.org> <roy-25E9C0.10065316092012@news.panix.com> <CAPTjJmqRwfJZDKLsnz1Cm6ra0LhjtC+uC=61u-Qj57b-gJzXfw@mail.gmail.com> <mailman.833.1347885784.27098.python-list@python.org> <505730ad$0$29981$c3e8da3$5496439d@news.astraweb.com> <CAPTjJmrEGN4aTNzYT9aupyLyfBJdE25G2enr72a7QxbtJEWb2w@mail.gmail.com>
In-Reply-To: <CAPTjJmrEGN4aTNzYT9aupyLyfBJdE25G2enr72a7QxbtJEWb2w@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-Spam-Rating: smtplq01.aruba.it 1.6.2 0/1000/N
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: <http://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: <http://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups: comp.lang.python
Message-ID: <mailman.837.1347902617.27098.python-list@python.org>
Lines: 73
NNTP-Posting-Host: 2001:888:2000:d::a6
X-Trace: 1347902617 news.xs4all.nl 6936 [2001:888:2000:d::a6]:43090
X-Complaints-To: abuse@xs4all.nl
Xref: csiph.com comp.lang.python:29383

from my gc.get_object()
I extract the sub system of the object that I would like to delete:

this is the object:
Class name 
win32com.gen_py.F4503A16-F637-11D2-BD55-00500400405Bx0x1x0.ITDProperty.ITDProperty
that is traked and the reference are:
get_referents >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> 
 >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> 
 >>>>>>>>>>>>
RefCount 5
<type 'tuple'> >>>>  (<class win32com.client.DispatchBaseClass at 
0x026ACB58>,)
RefCount 5
<type 'dict'> >>>>  '__int__': <function __int__ at 0x03A50770>, 
'__module__': 'win32com.gen_py.F45
RefCount 8
<type 'str'> >>>>  ITDProperty
RefCount 9
<type 'function'> >>>>  <function __getattr__ at 0x026C2630>
RefCount 9
<type 'function'> >>>>  <function __setattr__ at 0x026C2670>
get_referrers >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> 
 >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> 
 >>>>>>>>>>>>
RefCount 15
<type 'dict'> >>>>  'python_version': 34014192, 'defaultUnnamedArg': 
<PyOleEmpty object at 0x00447E
RefCount 6
<type 'list'> >>>>  <class 
win32com.gen_py.F4503A16-F637-11D2-BD55-00500400405Bx0x1x0.ITDProperty.I
RefCount 4
<type 'list'> >>>>  (u'ItemsListCreator', u'trick', u'pVal'), (3, 49, 
'0', None), (16393, 10, None,
RefCount 4
<type 'frame'> >>>>  <frame object at 0x029721D8>
RefCount 7
<type 'frame'> >>>>  <frame object at 0x02760148>
RefCount 5
<type 'dict'> >>>> '{39AAEA35-F71F-11D2-BD59-00500400405B}': <class 
win32com.gen_py.F4503A16-F637-

how can I understand how to clean up this situation or were are the 
references that I need to delete ?

 From the cad non python script I call an in process python com object, 
and before coming back to the cad application I need to clean up all com 
reference, because if I do not do that I corrupt the cad application .

so I urgently need to clean up all reference before coming back to the 
cad application.

any idea?

regards,
Matteo


Il 17/09/2012 18:09, Chris Angelico ha scritto:
> On Tue, Sep 18, 2012 at 12:16 AM, Steven D'Aprano
> <steve+comp.lang.python@pearwood.info> wrote:
>> The __del__ method does not delete an object. Remember, objects are only
>> deleted when there are no references to it. Otherwise you could have some
>> code that tries to use a deleted object, and you would get a system crash
>> or BSOD.
> There is a conceptually viable alternative: destroy an object
> immediately and force all references to it to become some sentinel
> value (eg None). Python currently doesn't have this, but it would be
> rather convenient at times. Could be part of a construct like 'with'
> to say "make this, use it, and then dispose of it".
>
> ChrisA