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Looking for a Python / Zope Programmer in Peru
by Remy Pinsonnault 25 Apr '05

25 Apr '05

Sorry if it is not the right list for this but we are looking for two Python / Zope programmers for a one year contract in Lima. If you know anyone interested please send your resumes off-list. Thanks Remy Pinsonnault

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Wanted Support For "Communication Server" Works with/on Zope
by Birol BI�AKLI 25 Apr '05

25 Apr '05

Hello dear zope community, I am Birol from Istanbul Technical University (ITU) in Istanbul-Turkey. I am a new Zope user and don't know so much about Zope and its products. I work with Zope on Linux and also use Python. I need a communication server that works with/on Zope like Flash Communication Server. I have been searched the internet since last week but couldn't get enough information about this. I want an "Open Source" communication server program like that what Flash Communication Server does. If you help me about this subject, I would be very happy, I wait your answers. Thank you for your interests. Birol BIÇAKLI

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Zope Starting Error
by Jonathan Goldberg 25 Apr '05

25 Apr '05

Can someone please help me resolve the following error: Error: The object named by "DBTab.ClassFactories.autoClassFactory" could not be imported (line 903 in file:///home/jgoldberg/my_zope/etc/zope.conf) For help, use /opt/Zope-2.7/lib/python/Zope/Startup/zopectl.py -h Thank you, Jonathan Goldberg

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high loads, more threads, spinning wheels
by Tim Middleton 25 Apr '05

25 Apr '05

I've been doing some simple load tests on a zope application, and I've found when i increase the zserver-threads in zope.conf very much the zope server goes into some sort of cycle where it eats 100% cpu and refuses to any future requests until restarted. The load test is simply a small threaded python script that flings up to 50 "simultaneous" random queries at the zope app. (The app is basically a search engine, using tsearch2 on postgresql... the tester flings random words at it as arguments; everything is dynamic for this test, no ram-cache objects, etc -- the database queries themselves seem to maintain very quick responses, the server seems to bog down more in the template rendering, or whatever else, after the data is returned). The zserver is behind apache (using mod_rewrite proxy). The single zserver is using a ZEO server (via localhost) for storage. The test seems to run okay with up to around 7 or 8 threads; the more threads are added the sooner the server seems to gum up. 10 is a bit flaky. Sometimes the tests fail, some complete (around 5000 requests). 12 more consistently, and sooner, gets stuck. And so on. I've twiddled with various config file settings such as the various cache settings and whatnot; not really knowing what they are, i tend to just increase them and see what happens. I'm wondering if someone who knows the internals more might have some idea what's going on here. Or any tips on how to debug what zope is doing when it gets into this state. This is Zope 2.7.5 (on FreeBSD, Python 2.3.4). -- Tim Middleton | Vex.Net | I have lived through whole tragedies x(a)veX.net | VexTech.ca | without speaking a word. --Dost. (GC)

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Sequence sorting module from a Python script
by Leticia Larrosa 25 Apr '05

25 Apr '05

Hi all: I want to order a sequence using the Sequence sorting module from a Python script. I have the following code: " seq = [['Bruzon', 'CUB'], ['Anand', 'IND'], ['Kasparov', 'RUS']] def test(oneElem, twoElem): if oneElem[0] == twoElem[0]: return 0 elif oneElem[0] > twoElem[0]: return 1 else: return -1 sort_on =(('self', test, 'desc')) return sequence.sort(seq, sort_on) " and i get the error: " Error Type: SyntaxError Error Value: sort option must contains no more than 2 fields " and Traceback: " Traceback (innermost last): Module ZPublisher.Publish, line 101, in publish Module ZPublisher.mapply, line 88, in mapply Module ZPublisher.Publish, line 39, in call_object Module Shared.DC.Scripts.Bindings, line 306, in __call__ Module Shared.DC.Scripts.Bindings, line 343, in _bindAndExec Module Products.PythonScripts.PythonScript, line 323, in _exec Module None, line 21, in orderBy - - Line 21 Module DocumentTemplate.sequence.SortEx, line 66, in sort Module DocumentTemplate.sequence.SortEx, line 161, in make_sortfunctions SyntaxError: sort option must contains no more than 2 fields " what i'm doing wrong? any suggestion? Thanks in advance.

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RE: [Zope] Does anyone care whether we deprecate ZClasses?
by Arenz, Ralph 25 Apr '05

25 Apr '05

SOS This would mean a disaster for us. We've created a lot products using ZClasses in production environment (internet,intranet,eai and so on) since zope-2.1.4. In short our complete developement in Zope is heavily based on ZClasses. We plan to use ZClasses in the future, too. For us ZClasses are a essential part of zope and they works very well. It is quite impossible for us to migrate all our Products to python-products or somethong else and i guess that this is not wanted by you!? I think that going away from ZClasses will let many other people with legacy-software running in the same problems. regards ralph

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How can I do audio/video streaming between users?
by Birol BI�AKLI 25 Apr '05

25 Apr '05

I want to do communication between users who want to do voice and video conferencing. Is there any program that can do this?

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manage_edit for Page Templates
by Rushabh Mehta 25 Apr '05

25 Apr '05

hi. there is a manage_edit() to modify the contents of a DTML document. is there anything similar for page templates? i tried manage_edit() on a page template and i get an attribute error for manage_edit... the document_src() method works though.... thanks rushabh

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Re: [Zope] How to convert Zope instance charset?
by Daniel Dekany 25 Apr '05

25 Apr '05

Monday, April 25, 2005, 5:34:04 AM, Andreas Jung wrote: > One last note from myside. I have experiences with unicode since over > 7 years while working with multilingual documents in the e-publishing > business. It is good practice to perform *any* unicode related work > *only* on unicode datatypes (Python unicode strings!!!) > and *not* some byte-encoded unicode strings as utf8 or whatever. These > encodings should only be used on the output level when presenting > unicode data to the user - either through-the-web, as export format > etc. This is a strong advice you should follow. As someone who works often with Java I absolutely agree with it. Just I don't know how to do it with Zope/Plone/other 3rd party products (not written by me), since they use not unicode strings. I don't know, maybe it can be specified for Python that it uses unicode for plain strings as well, but anybody has successfully done that with Zope? Like, what about the C parts of Zope then? > -aj -- Best regards, Daniel Dekany

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Re: [Zope] How to convert Zope instance charset?
by Daniel Dekany 25 Apr '05

25 Apr '05

Sunday, April 24, 2005, 7:22:42 PM, Andreas Jung wrote: > > > --On Sonntag, 24. April 2005 18:34 Uhr +0200 Daniel Dekany > <ddekany(a)freemail.hu> wrote: > >> >> Maybe *you* don't get the point. Python has a "virtual machine level" >> setting that specifies the locale and encoding (the charset). You can >> set it for example like: locale.setlocale('hu_HU', 'ISO-8859-2'). And >> although there is no charset information attached to strings, >> locale.strcoll and such will assume that the string is in the encoding >> specified globally like above, right? All the strings (which is not an >> unicode string) is assumed to use that encoding. It seems to me that it >> works like that until I specify 'UTF-8' in the locale, in which case it >> goes mad. > > > I am very much aware of the issue (btw. it was me who integrated > sequence.sort()). You are aware of it, so why do you dispute if UTF-8 is supported (read: can be used in practice)? Just how on the earth should anybody solve this "on the application level"? Should everybody use only his own products (that convert everything to "unicode" string)? Also everybody should patch ZCatalog and similar core components which also sorts non-unicode strings? Simply said, people can't use Zope with UTF-8 in practice (while I guess they can with ISO-8859-x, right?), with my original words "Since Python/Zope/etc practically doesn't support utf-8". And I didn't meant to hurt or upbraid Zope fans with it at all, I just said it as a fact in the middle of a sentence, and then what happens... (Why Plone guys use UTF-8 as default, I don't know, maybe they didn't realized it doesn't work for people who really utilize utf-8. I'm for too long in the business to be surprised. :) I think I will ask them...) > And if you look carefully at the API of sequence.sort() > then you will see that there is already built-in support locale-aware > comparisons. Yeah, I tried to use that earlier, but as I said for many times here, it can't sort utf-8 encoded strings, despite that I have set the "global locale" to something.utf8, certainly because Python locale.strcoll can't. So at the end: You Can Not Use UTF-8 with Zope. Right? Soooo, then back to the original question: converting and utf-8 instance to ISO-8859-2 instance, any idea? (Or is it still the standpoint that I should not??? D-%) > -aj -- Best regards, Daniel Dekany

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