March 2003 - Zope - Zope lists

RE: [Zope] Zope Installation Problems
by sean.upton＠uniontrib.com 04 Mar '03

04 Mar '03

You might have better luck if you use a source install of Python 2.1.3, and compile the source install of Zope 2.6.1 with the specific python2.1 binary you installed from source (wherever you installed it). Sean -----Original Message----- From: Sheppard Norfleet [mailto:shepnorfleet@comcast.net] Sent: Monday, March 03, 2003 5:29 PM To: zope(a)zope.org Subject: [Zope] Zope Installation Problems I am using Rad Hat Linux 7.x. which comes with python 2.2 not the problem. I have Zope that has a python 2.1 one with it. when I try to build w_pcgi.py using the python that comes with zope, I get compile errors when trying to build the exception modules, the last message has a message like "I and PICKY raiseError" There are a ton of warning and a few errors sprinkled in a compiler output (or at least it looks like that). Anyway I have been working at this installation for about a week, I have tried a source install and binary install. No matter which way I go zope fails to build using the 2.1 python that comes with it. Has anyone else had these problems? Trying to run Zope like this: bin/python z2.py -p /usr/local/apache/cgi-bin/zope.pcgi all I get in return is a new bash prompt wiht no warnings. the log files are empty or don't exist. Please help! BTW, don't mean to knock mailing lists but wouldnt forums be a lot easier way to communicate? Just a thought...

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RE: [Zope] Supported Processor for Zope
by sean.upton＠uniontrib.com 04 Mar '03

04 Mar '03

x86 hardware is usually fastest, compared to other platfoms. YMMV. Best test is likely to run Python's pystone tests on whatever hardware you might be evaluating; any score on new hardware over 20,000 is good. Athlon, p4, and Xeon are likely your best bet. run like this (in Debian GNU/Linux, for example): /usr/bin/python2.1 /usr/lib/python/test/pystone.py Sean -----Original Message----- From: McDonnell, Larry [mailto:lmcdonnell@protonenergy.com] Sent: Tuesday, March 04, 2003 6:40 AM To: Dennis Allison; McDonnell, Larry Cc: 'Zope@Zope. Org' (E-mail) Subject: RE: [Zope] Supported Processor for Zope Thanks, this is what I thought but its better to throw out the question if you are unsure. -----Original Message----- From: zope-admin(a)zope.org [mailto:zope-admin@zope.org]On Behalf Of Dennis Allison Sent: Tuesday, March 04, 2003 9:32 AM To: McDonnell, Larry Cc: 'Zope@Zope. Org' (E-mail) Subject: RE: [Zope] Supported Processor for Zope On Tue, 4 Mar 2003, McDonnell, Larry wrote: > Hi, > > Sorry microprocessors (Intel, AMD, etc) > Zope, for the most part, has no machine dependencies. As long as the needed OS support, Python, and a suitable C/C++ compiler are there, you should have no problem. _______________________________________________ Zope maillist - Zope(a)zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev ) _______________________________________________ Zope maillist - Zope(a)zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )

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Re: [Zope] Extending Zope system code without editing
by Dylan Reinhardt 04 Mar '03

04 Mar '03

At 08:50 AM 3/4/2003, Dennis Allison wrote: >Not quite... How do I modify a class defined in lib/python/StructuredText >or lib/python/ZPublisher or the like with the minimum of fuss and without >patching the actual distributed Zope system code... If you're looking for a way to change the behavior of an object without making *any* changes to the source code, I'm pretty sure that subclassing is all that's available. It is possible to define objects such that they allow certain methods to be overridden by ZMI objects, but that is special behavior that must be explicitly provided in the product. For my money, inheritance is about as low-impact a mechanism as one can hope to find. Unless I'm not understanding what you're trying to do or what issues this approach raises... in which case, let me know. If the major stopping point here is concern about hosing Zope, there are several things you can do to mitigate the potential harm: 1. Work on a test installation 2. Use comments liberally 3. Use a tool like rcs or cvs to provide version control 4. Refine your technique on a trivial product like Boring There's no better way to learn how Zope really works than to rip into the source. My advice would be to go for it. HTH, Dylan

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Re: [Zope] Extending Zope system code without editing
by Dylan Reinhardt 04 Mar '03

04 Mar '03

At 06:56 AM 3/4/2003, Dennis Allison wrote: > >From time to time I want to do things to the Zope system code, for >example, add a new method or override a method in a pre-existing class. Is >there a good way to do this within the Zope system structure. I'd like to >keep my changes isolated and use the inheritance and namespace mechanisms >of Python rather than hard edits. Inheritance is probably your answer here. You can either subclass an existing object or mix your code into an existing object's definition. Say you want to add a method to a Folder. One way is to make a basic product called my_folder, mix in Folder as a base class and then start overriding and extending. Then, in the ZMI you'll have the option of whether to use a standard Zope folder or one of your custom Folders. On the other hand, you could create a Python module called my_folder_changes, create a simple class called my_folder and use it to define the behaviors you want to see. Then add your class to the *front* of the list of base classes inherited by Folder. This won't override anything actually defined in Folder's class definition... you'll need to comment those out to override them with this technique. Is that what you're looking for? HTH, Dylan

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Re: [Zope] STX - how to add new function
by Jaroslav Lukesh 04 Mar '03

04 Mar '03

Hi Andreas, Thanks for that starting point. But I have no success with any of 3 files (it is need to be modified ClassicStructuredText.py, DocumentClass.py, HTMLClass.py) Does somebody have some modified version of STX sources or some how-to? Many thanks, J. Lukesh ---------- Odesílatel: Andreas Jung <lists(a)andreas-jung.com> Checkout lib/python/StructuredText/DocumentClass.py. But I recommend to keep your fingers from the code unless you really know what you are doing.

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persistent object with non-persistent attributes
by Jerome Alet 04 Mar '03

04 Mar '03

Hi, I would like to create a python Zope product which allows me to create persistent objects. but these objects have (as subobjects ?) complex attributes which are themselves instances of a non-Zope related class, and which should not be persistent (think hardware plug&play), because they are recreated every time a method is called on my instance. I think I could do (untested) : myZopePersistentClassInstance.complexAttr = myNonZopeClass() but this will probably, if it works, bloat by ZODB. is there a way to do this without suffering from severe bloat ? thanks in advance PS: I know this may not be very clear... Jerome Alet -- (c) 1928-???? The letters U, S, and A and the U.S.A. flag are the copyrighted property of Disney Enterprises Inc. Any infringment will be punished with the death penalty. Details : http://yro.slashdot.org/article.pl?sid=03/01/15/1528253&tid=123

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how to test to find image
by Steven Smith 04 Mar '03

04 Mar '03

I'm email this list again since several were nice enough to respond last time. I new and this list is helpful. I'm in Plone and want to display an image at the top of a UI box (like to top of the related or navigation box). However this image needs to change depending on what subfolder/branch I'm at. Normally I have seen the use of the tag "here/myimage.gif". My understanding is the default is to start at the top most directory and work its way through the site until it finds the first occurance of myimage.gif. I would like to reverse this behavior. I need it to start looking in the current location and work upwards until it finds myimage.gif. The reason is that under each of my first level subfolders I have placed a myimage.gif file. Even if I'm maybe four folders down I want to display that myimage.gif from the current branch (which my be three folders up). However if the normal logic of 'here' works it will find the wrong myimage.gif. <div class="box"> <img tal:replace="structure here/myimage.gif" /> <other tags and things .....> </div> Thanks, Steven

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Extending Zope system code without editing
by Dennis Allison 04 Mar '03

04 Mar '03

>From time to time I want to do things to the Zope system code, for example, add a new method or override a method in a pre-existing class. Is there a good way to do this within the Zope system structure. I'd like to keep my changes isolated and use the inheritance and namespace mechanisms of Python rather than hard edits.

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RE: [Zope] Supported Processor for Zope
by McDonnell, Larry 04 Mar '03

04 Mar '03

Thanks, this is what I thought but its better to throw out the question if you are unsure. -----Original Message----- From: zope-admin(a)zope.org [mailto:zope-admin@zope.org]On Behalf Of Dennis Allison Sent: Tuesday, March 04, 2003 9:32 AM To: McDonnell, Larry Cc: 'Zope@Zope. Org' (E-mail) Subject: RE: [Zope] Supported Processor for Zope On Tue, 4 Mar 2003, McDonnell, Larry wrote: > Hi, > > Sorry microprocessors (Intel, AMD, etc) > Zope, for the most part, has no machine dependencies. As long as the needed OS support, Python, and a suitable C/C++ compiler are there, you should have no problem. _______________________________________________ Zope maillist - Zope(a)zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )

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RE: [Zope] Supported Processor for Zope
by McDonnell, Larry 04 Mar '03

04 Mar '03

Hi, Sorry microprocessors (Intel, AMD, etc) -----Original Message----- From: Dennis Allison [mailto:allison@sumeru.stanford.EDU] Sent: Tuesday, March 04, 2003 9:10 AM To: McDonnell, Larry Cc: 'Zope@Zope. Org' (E-mail) Subject: Re: [Zope] Supported Processor for Zope On Tue, 4 Mar 2003, McDonnell, Larry wrote: > > After a couple of Google searches, I cannot find the answer to this > question, What processors are support or have worked with Zope? I am in the > process of creating some zope services for some customers. In order to keep > cost down but at the same time avoid any compatibility issues, I am asking > the list this question. Thanks. > Can you clarify your question? What do you mean by "processors"? Zope requires Python (duh..) and C/C++ for extensions and an operating system that supports sockets with the features required by Zserver. Most folks use Squid or Apache in front of Zope which adds additional constraints.

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