March 2000 - Zope - Zope lists

WorldPilot IMAP/SMTP settings (was: Re: Re: [Zope] Worldpilot/Python help)
by WorldPilot Helpers 09 Mar '00

09 Mar '00

Hi Matt, Hi Jack, What were your IMAP/SMTP settings prior to setting them to localhost? Were they empty or pointing to a specific host name? Cheers, Ryan > Hi Matt! > > I ran into this same problem. I finally traced it to a problem in the IMAP and > SMTP server options set in the setup screen. It seems to work best when these > are explicitly set to localhost and localhost. I'm not sure why but that's how > I got it to stop giving me that particular error. Unfortunately it will require > removing the current WorldPilot object and replacing it with a new one since > those parameters are not visible on the parameter tab of the object. > > Good Luck! > -- > Jack Ungerleider > The Ungerleider Group > Creative Solutions for Cooperative Computing > jack(a)jacku.com > www.jacku.com > > On Sat, 04 Mar 2000, Matt Welch wrote: > > I was very comfortable in my cozy PHP/MySQL world, until I saw Worldpilot. > > I HAD to finally break down and > > install Zope so I could have this. Needless to say, my python/Zope skills > > are a little lacking at this point. I could > > use some help. > > > > Everything is installed and working great, except for a couple small > > problems with Worldpilot. I'll detail the most > > significant first, and see how we do. > > > > When I try to send mail, I get a Zope error with the following traceback: > > > >  > > > > The problem is obviously (to me anyway) that the call to publish in the def > > publish_module > > (response s only > > getting one > > argument instead of four. > > > > I'm not sure I understand why, as this is a bit beyond my current > > comprehension of python at the moment. > > A gentle push in the right direction would be appreciated. > > > > Thanks, > > Matt > > > > > > _______________________________________________ > > Zope maillist - Zope(a)zope.org > > http://lists.zope.org/mailman/listinfo/zope > > ** No cross posts or HTML encoding! ** > > (Related lists - > > http://lists.zope.org/mailman/listinfo/zope-announce > > http://lists.zope.org/mailman/listinfo/zope-dev ) > > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://lists.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope-dev ) > > --------------------------------------------------- WorldPilot - Get Synced - http://www.worldpilot.org The Open Source Personal Information Manager Server Powered by Python and Zope - http://www.zope.org

3 2

RE: [Zope] Zope needs this (and Dynamo has it)
by Alexander Staubo 09 Mar '00

09 Mar '00

> From: Martijn Faassen [mailto:faassen@vet.uu.nl] > Sent: Tuesday, March 07, 2000 10:40 PM > To: Zope Mailing List (E-mail) > Subject: Re: [Zope] Zope needs this (and Dynamo has it) > > > Alexander Staubo wrote: > > I definitely believe that Python is Zope's largest problem > right now. > > It's also, from a technical point of view, one of it's > biggest assets -- > > Zope is becoming the killer application of Python, and > might eventually > > become the driving force to evolve Python, which is, I believe, > > suffering from draught into the contributor department. Skilled > > developers aren't flocking to Python to make it faster. Not > right now, > > anyway. > > Hm, skilled developers do hack on Python! There's the Python people at > CRNI, there's Christian Tismer in Germany doing Stackless > Python (which > offers interesting arcane features and a mild performance > improvements), > there's the whole JPython group, there's John Skaller with his Vyper > project (a Python interpreter/compiler in Ocaml, one of the reasons > is more speed). Then there's the Python Types-SIG, which I urge you to > look at if you haven't already. People are indeed working on Python, but not to the extent of more popular projects like Linux or even, I believe, Perl. Compiler/language projects have, historically, not thrived in the collaborative world of open source software -- for very specific reasons inherent in the concept itself of languages and compilers. Still, I'm very impressed with the evolution of next-gen GCC (formerly EGCS). I consider Skaller's Vyper project a fringe project with limited applicability, because Ocaml itself is a fringe project -- it's certainly not what you might call a mainstream, popular language. There's something icky about an OcamlPython. However, I'd love for it to succeed. (Unfortunately, Skaller is already out on a limb, implementing all sorts of stuff he deems interesting -- so true CPython compliance isn't necessarily on his agenda, and fragmenting Python like this is, imho, not a good thing.) Anyway, while I have not been monitoring the Python type/interface SIG, it seems to be moving quite slowly. > > My hope is that Zope will change this, because Python has > possibly one > > of the slowest interpreters on earth. Python zealots -- and there is > > such a beast -- will tell you that Python's performance is less of a > > matter because what you sacrifice in speed you gain in power, ie. > > computational expressiveness through a high-level, dynamic language. > > It is _less_ of a problem, but most Pythoneers are indeed > interested in > speeding of the language. I haven't heard of zealots who want to hold > back speedups, as long as it doesn't do away with the power. I'm not saying they're holding back, but rather they're dismissing speed and scalability as being a problem. I firmly believe that speed is Python's number of problem today, and it's keeping Python from being used in more applications. Python has plenty of problems, but they're tiny by comparison and imho they're mostly artifacts of Python's currently somewhat anemic syntax (eg., only two kinds of loops, no "switch", no protected members, no constants, no syntax for declaring mutability). Imho Python's second big problem is what you might call, in lack of a better term (I'm not wearing my compiler-writer hat right now, sorry), contractual semantics -- anything from static typing (pass a string to a function that takes an int and you get either a compilation error or an exception) to interfaces (the ability to enforce semantic compatibility) to design-by-contract constructs. > > For an example of a good, Python-like, dynamic language that is also > > very fast, take a look at Dylan. In current > implementations, Dylan is > > not interpreted but rather compiled to native code, but in > theory there > > is nothing stopping anyone from writing a highly efficient Dylan > > interpreter. Dylan's magic comes from its use of type > hints, a system > > which I had recognized as likely pivotal to improving Python's > > interpreter long before I knew of Dylan. > > It'll be pretty difficult to make a beast like Zope exploit > type-hints, though, > I think. I disagree, but there's only one way to find out -- implement it (or simulate it very carefully). >By the way, the Types-SIG is working on type > extensions to Python, > partially for performance (OPT), partially for better error > checking (ERR) > and partially for better documentation (DOC). See: > > http://www.python.org/sigs/types-sig/ > > And also see the new compiler SIG: > > http://www.python.org/sigs/compiler-sig/ Very interesting, thanks. > > Just imagine -- while Zope is running, thousands and > thousands of the > > same little checks are performed continuously, over and over again, > > amounting to no uncertain overhead. > > That's of course true. I heard Christian Tismer talk about making a > register machine interpreter for Python, which could potentially speed > things up quite a bit. I shall ask him about this idea again > sometime. :) Not potentially. Definitely. I thought about this yesterday, and I got to thinking that it would probably be pretty simple to create a dynamic native-code generator that translated bits of bytecode on-the-fly, with the necessary stubs implemented in a small helper-assembler written in C. Something like: def Halibut(): ... import codegen c = codegen.Translate(Halibut) c() # Call native-code function Halibut and then with whole modules: import pickle, codegen pickle = codegen.Translate(pickle) Internally, Translate() would disassemble the bytecode, generating native assembly language code and pass it to the helper C module, which would store it in an executable buffer and fix up the necessary references to the Py* API symbols. Just a thought. It would be an interim solution for certain CPU-intensive modules, in anticipation of such built-in functionality in CPython itself. Possibly. > > Python's biggest overhead comes from its dynamism -- the > dynamic typing, > > as explained, combined the object allocation system: most > things is an > > object, so a lot of objects are constantly spawned and torn > down, often > > in rapid succession because the compiler/interpreter can > make few hard > > analyses of when stuff is needed. Python also has a high > function-call > > overhead. > > All true. Anyway, the only thing you're wrong about is that > Pythoneers aren't > interested in improving performance. They are, but I grant > you they're not > performance nuts like users of C or C++. :) Well, I guess they're too busy arguing about whether Python should allow assignments as expressions so you could do "while line = f.readline():". ;-) > > Regards, > > Martijn > -- Alexander Staubo http://alex.mop.no/ "Do not go gentle into that good night/old age should rave and burn against the close of day/Rage, rage against the dying of the light." --Dylan Thomas

2 1

Re: Referencing a Zope Instance through a Hyperlink
by Alexandre Ratti 09 Mar '00

09 Mar '00

Hello, you may want to take a look at this doc: <http://www.zope.org/Members/AlexR/ZClassIDBug> This looks like the ZClass ID bug problem. Alexandre At 12:00 08/03/2000 -0800, you wrote: >Date: Wed, 08 Mar 2000 14:45:41 -0500 >To: zope(a)zope.org >From: "M.J. Stahl" <mjstahl(a)bizux.net> >Subject: [Zope] Referencing a Zope Instance through a Hyperlink > > >I have a group of ZClass (DCTasks) stored in a folder >'/tasks/generator/taskstorage' > >The index_html of '/tasks' is the interface to view the instances and >certains properties that are saved on those instances. One of the >properties is 'task_title' and is displayed as a hyperlink to view the rest >of the properties of the instance. > >This is my problem, when I check the source of the page (/tasks/index_html) >and I take a look at the hyperlinks for viewing the properties of the >instance, it gives a URL like so: > >http://diis/tasks/generator/taskstorage/<string> > ><string> should actually be replaced with the 'id' of the instance. This is >so by the DTML code for index_html: > ><a href="<dtml-var URL1>/generator/taskstorage/<dtml-var id>"> > <dtml-var task_title> ></a> > >I have no idea why a string is taking the place of <dtml-var id> in >referance to the instance. > >Any ideas would be helpful. > >Best regards, > >MJ Stahl

1 0

Re: [Zope] newbie tree q - how collapse and expand
by Petr Knapek 09 Mar '00

09 Mar '00

>>>>> On Thu, 9 Mar 2000 09:07:15 -0000, "Phil Harris" <phil.harris(a)zope.co.uk> said: PH> Andy try something like: <a PH> href="treeview?expand_all=1">expanded</a> <a PH> href="treeview?collapse_all=1">collapsed</a> On my Zope, (2.1.4 deb package - on Linux) only collapse_all works. In the case of expand_all a key error is raised. I have reported this yesterday and also Jason at the same day reported the same bug. Does anybody the same problem with tree and expand_all? PH> HTH PH> Phil phil.harris(a)zope.co.uk PH> ----- Original Message ----- From: "Andy Heath" PH> <a.k.heath(a)open.ac.uk> To: <zope(a)zope.org> Sent: Thursday, March PH> 09, 2000 8:38 AM Subject: [Zope] newbie tree q - how collapse PH> and expand >> I'm getting better but stil learning. >> >> I want to collapse/expand a tree at will so that I can come in >> from particular hyperlinks to a known tree state. I know there >> are two variables I can set but I don't know how to do this from >> code. >> >> For example how could I have a hyperlink whose HREF is a page >> containing a tree in such a way that when you get there the tree >> gets collapsed while another link to the same page doesn't >> collapse it. Can someone show me some code that dows this >> please. >> >> Andy -- ------------------------------------------------- Andy >> Heath a.k.heath(a)open.ac.uk The Open University +44 (0) 114 >> 2885738 Petr -- Petr Knápek PVT.NET, e-mail: petr.knapek(a)pvt.net, tel:+420-5-41 558 394 PVT a.s. - pvt.net, Veveří 102, 659 10 Brno, Czech Republic

3 2

Re: getting object reference from an id string?
by Alexandre Ratti 09 Mar '00

09 Mar '00

Hello Darran, building on Rik's previous answer, how about this: <dtml-call "REQUEST.set('myObjRef', _[desired_id])"> It tested OK with an Image object called "image" and located in the site root: # Storing the image name in a variable <dtml-call "REQUEST.set('desired_id','image')"> # Creating an object reference based on the variable <dtml-call "REQUEST.set('myObjRef', _[desired_id])"> # Displaying the object title and size <dtml-var "myObjRef.title"> <dtml-var "myObjRef.getSize()"> # Rendering the object if it's renderable. An image is. <dtml-var myObjRef> If it's not renderable, you'll end up with something like "<Folder instance at 01368880>" in the HTML page source code. Does it work for you? If yes, you may want to add a FAQ Question and it's Answer on zdp.zope.org (hint, hint :-). Cheers. Alexandre At 04:55 08/03/2000 -0800, you wrote: >From: "Darran Edmundson" <Darran.Edmundson(a)anu.edu.au> >To: "zope" <zope(a)zope.org> >Subject: [Zope] getting object reference from an id string? >Date: Wed, 8 Mar 2000 23:24:46 +1100 >charset="iso-8859-1" > >Say one has an object reference and knows the >string id of a child node. From this info, we >want an object reference to the named child. > >I'd like someone to prove me wrong that there >is not a one-liner to accomplish this seemingly >trivial task. I've had to resort to (off the >top of my head) code like: > ><dtml-in "objectValues(['child meta-type'])"> > <dtml-with sequence-item> > <dtml-if "id == desired_id"> > <dtml-call "REQUEST.set('desired_ref',_['sequence-item'])"> > </dtml-if> > </dtml-with> ></dtml-in> > >I'm really looking for a solution that doesn't >require looping. Since Zope enforces unique id's >at a given level, the name should be sufficient >to resolve the child object. > >Darran.

1 0

Tracker
by Joachim Schmitz 09 Mar '00

09 Mar '00

is the PTK-Tracker available as a product or CVS-download ? Mit freundlichen Grüßen Joachim Schmitz WWW-Consultant email: js(a)ac-copy.net tel: +49-241-89491-0 fax: +49-241-89491-29

2 1

<dtml-var aaa> vs. <dtml-var "aaa"> question
by Michael Lausch 09 Mar '00

09 Mar '00

can anybody explain me why the following is happening: if i have a DTML Method m1 in the folder f1/f2/m1 and i write <dtml-var f1.f2.m1> this does not work. AFAIK the `.' operator needs to much priviledges in this context. <dtml-var "f1.f2.m1"> works, but the DTML output is not rendered, but displayed as text like: <standard_html_header><h2>........ so i'm using this construct for now: <dtml-with f1> <dtml-with f2> <dtml-var m1> </dtml-with> </dtml-with> My question is why's <dtml-var "f1.f2.m1"> not rendered?

2 1

newbie tree q - how collapse and expand
by Andy Heath 09 Mar '00

09 Mar '00

I'm getting better but stil learning. I want to collapse/expand a tree at will so that I can come in from particular hyperlinks to a known tree state. I know there are two variables I can set but I don't know how to do this from code. For example how could I have a hyperlink whose HREF is a page containing a tree in such a way that when you get there the tree gets collapsed while another link to the same page doesn't collapse it. Can someone show me some code that dows this please. Andy -- ------------------------------------------------- Andy Heath a.k.heath(a)open.ac.uk The Open University +44 (0) 114 2885738 _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )

2 1

RE: [Zope] RE: [newbie] MySQLDA Installation error at MySQLdb bui ld.
by Carlson, Christopher W. 09 Mar '00

09 Mar '00

I've never used Caldera's distribution, but if it's anything like Red Hat, the following should work: 1) Open /etc/ld.so.conf with your favorite text editor and append the directory in which libmysqlclient is located. 2) Run 'ldconfig' This will update the list of directories that the linker searches. Let me know how it goes. --- Chris -----Original Message----- From: Eric L. Walstad [mailto:ewalstad@energywright.com] Sent: Wednesday, March 08, 2000 12:06 PM To: CURTIS David; Chris Best; zope(a)zope.org Subject: [Zope] RE: [newbie] MySQLDA Installation error at MySQLdb build. Dave & Chris, Thanks for replying. I'm running Caldera OpenLinux 2.3. I chose it because I heard that it had one of the smoothest installations. I am only a few months into Linux; I'm transitioning over from the Dark Side (Microsoft). Heehee. Here's my best guess at what's going wrong with the MySQLDA/db installation. I think it is related to access rights or locations to the libmysqlclient.so.6 file. When I run build.py, I can see the script accessing the MySQL library folder (in my case: /usr/local/lib/mysql) This is the path the MySQL 'make install' script displayed when it was done installing MySQL. I checked, and the library files are there. Anyway, I can see the build.py script working some of its magic within this folder, so I feel confident that the paths in the Setup.in file are correct. However, it is crashing when it tries to "from _mysql inport *". I am not (yet) a Python programmer, so I don't understand the implications of this import. I'll reprint the error message I received for anyone else that reads this: Traceback (innermost last): File "build.py", line 14, in ? import MySQLdb File "MySQLdb.py", line 19, in ? from _mysql inport * ImportError: libmysqlclient.so.6: cannot open shared object file: no such file or directory" I like your idea of making a link to the MySQL library file (libmysqlclient.so.6). I know this is a stupid question, but if I run: ln /usr/local/include/mysql libmysqlclient.so.6 what will the link be called, and where will it be located? How will this help the build.py script? Thanks again for your input! Chris, This seems to be pretty common which makes me feel, well, not alone... Thanks for the note and I'll keep you updated on my progress. Here's what Dave Curtis sent me earlier today. He reinstalled EVERYTHING and it worked, but I'm not ready to go that far yet. Maybe something in here will help you... +++++++++++++++++ Eric, Major bummer! Installing ZOPE with MySQL is not as easy as it could/should be. I wish one of the programmers would clear up this Zope/MySQL confusion. I wonder if Alanprog could help out by simplifying the installation. As I am a newbie I would love to fix it but it way over my head. Ok, about your problem, this is where I also got stuck. Here is my solution. I reinstalled linux (probably didn't need to but I did) I used an older version of MySQL ver 3.22.27 and installed ZOPE, PYTHON, MYSQL from the source. I made sure that I also installed the python development stuff. I then used the the same procedure and viola the darn thing worked. Can't tell you anymore. Well, use can try using a link # ln /usr/local/include/mysql libmysqlclient.so.6 and see if it can now find the libraries/files it needs. Are you sure that the Setup.in path is correct? I looked at both these files build.py and MySQLdb.py they both refer to libraries and their respective location. Anyway good luck and if you get an answer, please let me know also. I am curious what O/S your are using and why you choose it. I probably going to change over to mandrake linux for security reasons. Dave +++++++++++++++++ // -----Original Message----- // From: Chris Best [mailto:chris.best@bluesky-technologies.com] // Sent: Wednesday, March 08, 2000 9:04 AM // To: ewalstad(a)energywright.com // Subject: Zope MySQL // // // Eric // // I'm having almost exactly the same problem except build.py crashes with: // // ImportError: No module named _mysql // // If you get an answer before me could you let me know and I'll do // the same. // // Cheers // // Chris // _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )

3 2

Re: [Zope] Newbie Question regarding MYSQL and Zope
by Curtis Maloney 09 Mar '00

09 Mar '00

On Tue, 07 Mar 2000, CURTIS David wrote: > Hi, > > What versions of Zope (probably 2.1.4) and what versions of MySQL work together? I have tried unsuccessfully to get MySQL to work with the the MySQLDA using the latest stuff. > Greetings, I have used MySQL 3.22 (Stable) and 3.23 (Development) with Zope 2.0.1 through 2.1.4. I am currently using them with the ZMySQLDA version 1.1.3, along with MySQLdb version 0.2.3. There is a very good howto on installing these. I have recollections of compile problems on my first attempt, but it turned out I was tryring to compile something that was obivated by MySQLdb. So, follow the instructions carefully. -- Have a better one, Curtis. <dtml-var standard_work_disclaimer>

3 2