[Zope-dev] Question about Labels
Hi,
I have a Product with a Label called Foo. Now what can i do, that when
anyone clicked on the tab Foo first the function bar() is called and
after that the HTML-File is displayed.
as
manage_options =({'label':'Foo', 'action':'manage_propertiesForm'},)
def bar(self):
do anything before displaying the HTMLFile
def manage_propertiesForm(self,REQUEST):
""" doc string """
self.bar()
return HTMLFile('edit_NetzwerkForm', globals())
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[Zope-dev] FTP behaviours
Has anyone done any work in the area of ftp controlled behaviours? I want to do something like check if an object is of a specific sort before overwriting/creating and then take some additional actions. -- Robin Becker ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Previous versions of persistent objects
Are there any methods to get access to previous versions of persistent objects without actually carrying out the undo? -- Robin Becker ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Chameleon
Hi, I just tried to use the chameleon product with zope 2.2.1 under SuSE 7.0. After adding a new chameleon folder, I can't enter that folder, cause there is always the authorisation-box opened. And I am not able to authorize. Can the chameleon product work with 2.2.x at all ? Mit freundlichen Grüßen Joachim Schmitz AixtraWare, Ing. Büro für Internetanwendungen Hüsgenstr. 33a, D-52457 Aldenhoven Telefon: +49-2464-8851, FAX: +49-2464-905163 ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Shared Libraries and Persistent Objects
Hey guys, I've got a question about how Zope deals with shared libraries. Say I have a 2Meg shared library that I've generated with SWIG. (I know it's big, but for sake of argument) Say then that I create a Python Class that imports this library and provides a front-end for each of its exported methods. Then, I instantiate this class 2000 times within a Zope instance. My question is, the library code is loaded into memory once, right? That seems to be what should happen, but I want to make sure before I start selling people here on SWIGing a few utilities and bundling them into one of our Zope objects instead of doing fork/execs to call an executable. I'm not shifting the burden from loading time to storage size, am I? Thanks, Monty ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] ZSQL Methods from Python?
Hey, is there any doco about using ZSQL Methods from Python Products? Also, does anyone know of any work done to extend ZSQL Methods to allow stored-procedure calls? I know I can do an Oracle Procedure call from DCOracle that returns a cursor, but I'd love to combine that with the caching/pluggable brains of ZSQL Methods. Is there anything out there on this or am I going to have to roll my own? Thanks, Monty ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Shared Libraries and Persistent Objects
Monty Taylor wrote: Hey guys, I've got a question about how Zope deals with shared libraries. Say I have a 2Meg shared library that I've generated with SWIG. (I know it's big, but for sake of argument) Say then that I create a Python Class that imports this library and provides a front-end for each of its exported methods. Then, I instantiate this class 2000 times within a Zope instance. My question is, the library code is loaded into memory once, right? Right. In fact, if you were running multiple Zope (or Python) processes using the library, then there would only be one copy in memory shared among the multiple processes. That seems to be what should happen, but I want to make sure before I start selling people here on SWIGing a few utilities and bundling them into one of our Zope objects instead of doing fork/execs to call an executable. I'm not shifting the burden from loading time to storage size, am I? No. Jim -- Jim Fulton mailto:[EMAIL PROTECTED] Technical Director (888) 344-4332 Python Powered! Digital Creationshttp://www.digicool.com http://www.python.org Under US Code Title 47, Sec.227(b)(1)(C), Sec.227(a)(2)(B) This email address may not be added to any commercial mail list with out my permission. Violation of my privacy with advertising or SPAM will result in a suit for a MINIMUM of $500 damages/incident, $1500 for repeats. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZSQL Methods from Python?
Jim Fulton wrote:
Monty Taylor wrote:
Also, does anyone know of any work done to extend ZSQL Methods to allow
stored-procedure calls?
No, but I'd love to see someone tackle it. The semantics
of stored procedures varies so widely accross databases, that
I doubt that it would be easiliy generalizable. I think, at
least for starters, a form of stored procedure support for
Oracle would make alot of sense.
I know I can do an Oracle Procedure call from
DCOracle that returns a cursor, but I'd love to combine that with the
caching/pluggable brains of ZSQL Methods. Is there anything out there on
this or am I going to have to roll my own?
I think you'd have to roll your own. If you want to
do something reusable that other people could use, I'd be
happy to provide whatever advice and support I can.
I think I'd like to talk to you about this. We're about to work on
transitioning a web-based product to Zope, and we use Store Procedures
exclusively. I'd love to have the extra ZSQL goo instead of having to wrap
the code at such an individual level. Maybe we can stick someone on the task.
But I'm sure we'll need a guiding hand or two. All of this assumes I can get
past the basic problem that follows...
Note that one of the things I like about Oracle's stored procedures
is that they allow me to avoid screwing with cursors in the common case
that I'm getting one row of data. I can just get the data I need through
a straight function call. The DCOracleStorage uses stored procedures
almost exclusively.
I've been looking through that code (we've started using DCOracleStorage on
the backend.) For some reason, though, I can't get the stored procedure stuff
to work like you do. Check out the following:
Oracle8i Enterprise Edition Release 8.1.6.0.0 - Production
With the Partitioning option
JServer Release 8.1.6.0.0 - Production
SQL desc pgm140_api;
PROCEDURE SELECT_TARGETS
Argument Name TypeIn/Out Default?
-- --- --
PP_NAMEVARCHAR2IN
PP_RESULT REF CURSOR IN/OUT
RECORD IN/OUT
AMSM_IDNUMBER(12) IN/OUT
NAME VARCHAR2(80)IN/OUT
PROCEDURE SELECT_TECHNOLOGIES
Argument Name TypeIn/Out Default?
-- --- --
PP_CATEGORYVARCHAR2IN
PP_RESULT REF CURSOR IN/OUT
RECORD IN/OUT
ET_ID NUMBER(12) IN/OUT
NAME VARCHAR2(80)IN/OUT
*
Then from python, with the same connection string, I do:
Python 1.5.2 (#1, Feb 14 2000, 18:27:27) [GCC 2.95.1 19990816 (release)] on
sunos5
Copyright 1991-1995 Stichting Mathematisch Centrum, Amsterdam
import DCOracle.oci_
conn=DCOracle.Connect('')
pgm140_api=getattr(conn.procedures,'pgm140_api')
sql_select_targets=getattr(pgm140_api, 'select_targets')
Traceback (innermost last):
File "stdin", line 1, in ?
File "/apps/zope/lib/python/Products/ZOracleDA/DCOracle/ociProc.py", line
324, in __getattr__
oci.error: no usable procedure named pgm140_api.select_targets
I've tried using all caps on one or both as well to no avail. Any thoughts?
Monty
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Re: [Zope-dev] ZSQL Methods from Python?
Monty Taylor wrote:
Jim Fulton wrote:
(snip)
Note that one of the things I like about Oracle's stored procedures
is that they allow me to avoid screwing with cursors in the common case
that I'm getting one row of data. I can just get the data I need through
a straight function call. The DCOracleStorage uses stored procedures
almost exclusively.
I've been looking through that code (we've started using DCOracleStorage on
the backend.) For some reason, though, I can't get the stored procedure stuff
to work like you do. Check out the following:
Oracle8i Enterprise Edition Release 8.1.6.0.0 - Production
With the Partitioning option
JServer Release 8.1.6.0.0 - Production
SQL desc pgm140_api;
PROCEDURE SELECT_TARGETS
Argument Name TypeIn/Out Default?
-- --- --
PP_NAMEVARCHAR2IN
PP_RESULT REF CURSOR IN/OUT
RECORD IN/OUT
AMSM_IDNUMBER(12) IN/OUT
NAME VARCHAR2(80)IN/OUT
PROCEDURE SELECT_TECHNOLOGIES
Argument Name TypeIn/Out Default?
-- --- --
PP_CATEGORYVARCHAR2IN
PP_RESULT REF CURSOR IN/OUT
RECORD IN/OUT
ET_ID NUMBER(12) IN/OUT
NAME VARCHAR2(80)IN/OUT
*
Then from python, with the same connection string, I do:
Python 1.5.2 (#1, Feb 14 2000, 18:27:27) [GCC 2.95.1 19990816 (release)] on
sunos5
Copyright 1991-1995 Stichting Mathematisch Centrum, Amsterdam
import DCOracle.oci_
conn=DCOracle.Connect('')
pgm140_api=getattr(conn.procedures,'pgm140_api')
sql_select_targets=getattr(pgm140_api, 'select_targets')
Traceback (innermost last):
File "stdin", line 1, in ?
File "/apps/zope/lib/python/Products/ZOracleDA/DCOracle/ociProc.py", line
324, in __getattr__
oci.error: no usable procedure named pgm140_api.select_targets
I've tried using all caps on one or both as well to no avail. Any thoughts?
I suspect that the problem is the RECORD argument type. I don't
remember off-hand what this is, but I'm pretty sure, the DCOracle
procedure code doesn's handle this type. We (you;) would need to
either work around this or fix it. Unless the fix is easy though,
we might want to wait for an OCI8-based Oracle interface that
someone here is rumored to be working on. :) (Actually, I *know*
that someone's working on an OCI 8 interface, but I'm not sure
what the status or priority is.)
Jim
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Technical Director (888) 344-4332 Python Powered!
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Under US Code Title 47, Sec.227(b)(1)(C), Sec.227(a)(2)(B) This email
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permission. Violation of my privacy with advertising or SPAM will
result in a suit for a MINIMUM of $500 damages/incident, $1500 for
repeats.
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Re: [Zope-dev] I feel your Wiki Pain ;-)
I like where you're going with this Martijn. Spurred on by your concrete examples, how about this: every wiki page has an email address and functions as a "mailing list". Eg: I could subscribe or send edits to ZWikiWeb:[EMAIL PROTECTED] StructuredTextWiki:[EMAIL PROTECTED] [EMAIL PROTECTED] (defaults to the front page) A zwikiweb could be seen as a hierarchy of very lightweight mail lists. When I subscribe to a page(list), I would also receive edits(mail) to its child pages(lists) by default. Implementation: a sufficiently smart mail server, or (better?) build on the "mail into zope" project for an all-zope solution. Eg: I might install and configure the "ZWikiMail" product, and suddenly my existing wikis are mail-enabled.. Comments ? -Simon ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Re: [Zope-ZEO] Advice
We're using ZCVSMixin for just such a scenario. It's working a lot better than nothing. ;-) It does still have rough edges, and you need to know too much about how it works to do anything complex, but it does allow us to manage changes and test/stage/update etc with a much greater degree of control than we used to have... Of course right now it's unix only... but I should be able to fix that once my current slate of projects are finished. -steve "Andy" == Andy McKay [EMAIL PROTECTED] writes: One of the reasons our group is moving away from Zope is that it has very poor support (if any) for the development/staging/live model. We like this model. We think it's a good thing. But sync'ing code across multiple Zope installations is a royal PITA. I'd like to hear more about the problems you've had and how you overcome them in a different system. And no, versions are *not* the answer. Well, they are a pretty good answer for lots of applications in my experience. Andy Version can work for small changes, but they certainly dont Andy for large numbers of changes across lots of objects. And Andy since the catalog is a key component for our site, its a Andy real problem. Andy ___ Zope-Dev Andy maillist - [EMAIL PROTECTED] Andy http://lists.zope.org/mailman/listinfo/zope-dev ** No cross Andy posts or HTML encoding! ** (Related lists - Andy http://lists.zope.org/mailman/listinfo/zope-announce Andy http://lists.zope.org/mailman/listinfo/zope ) ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZSQL Methods from Python?
At 08:43 AM 9/22/00 -0400, Jim Fulton wrote: Also, does anyone know of any work done to extend ZSQL Methods to allow stored-procedure calls? No, but I'd love to see someone tackle it. The semantics of stored procedures varies so widely accross databases, that I doubt that it would be easiliy generalizable. I think, at least for starters, a form of stored procedure support for Oracle would make alot of sense. Ty and I have put together a Stored Procedure method for Sybase; it requires a minor patch to ZSybaseDA, however, to allow for the status code return. I'm not sure how useful it would be to anyone else, though, since all we ever do with stored procedures is process the return value, and ignore any actual SELECT results. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZSQL Methods from Python?
"Phillip J. Eby" wrote: At 08:43 AM 9/22/00 -0400, Jim Fulton wrote: Also, does anyone know of any work done to extend ZSQL Methods to allow stored-procedure calls? No, but I'd love to see someone tackle it. The semantics of stored procedures varies so widely accross databases, that I doubt that it would be easiliy generalizable. I think, at least for starters, a form of stored procedure support for Oracle would make alot of sense. Ty and I have put together a Stored Procedure method for Sybase; it requires a minor patch to ZSybaseDA, however, to allow for the status code return. I'm not sure how useful it would be to anyone else, though, since all we ever do with stored procedures is process the return value, and ignore any actual SELECT results. I think it would be useful. Can you get multiple return values? Jim -- Jim Fulton mailto:[EMAIL PROTECTED] Python Powered! Technical Director (888) 344-4332http://www.python.org Digital Creationshttp://www.digicool.com http://www.zope.org Under US Code Title 47, Sec.227(b)(1)(C), Sec.227(a)(2)(B) This email address may not be added to any commercial mail list with out my permission. Violation of my privacy with advertising or SPAM will result in a suit for a MINIMUM of $500 damages/incident, $1500 for repeats. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZSQL Methods from Python?
At 12:49 PM 9/22/00 -0400, Jim Fulton wrote: "Phillip J. Eby" wrote: Ty and I have put together a Stored Procedure method for Sybase; it requires a minor patch to ZSybaseDA, however, to allow for the status code return. I'm not sure how useful it would be to anyone else, though, since all we ever do with stored procedures is process the return value, and ignore any actual SELECT results. I think it would be useful. Can you get multiple return values? By "return value", I mean the "return status" code which is an integer returned by the Sybase "RETURN" statement. Sybase also can generate its own, negative-numbered return statuses, which indicate a Sybase error. These error codes can include ones that mean the current transaction has already been aborted. Apart from the "return value", a Sybase stored procedure can execute SELECT's which result in rows being returned. We have never used this capability, so I'm not sure what would need to be done for it to be practical. We ordinarily use stored procedures only to perform inserts, updates, deletes, and other things that only need a integer result if anything. (Eg: get next counter value to assign an object identifier.) ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZSQL Methods from Python?
"Phillip J. Eby" wrote: At 12:49 PM 9/22/00 -0400, Jim Fulton wrote: "Phillip J. Eby" wrote: Ty and I have put together a Stored Procedure method for Sybase; it requires a minor patch to ZSybaseDA, however, to allow for the status code return. I'm not sure how useful it would be to anyone else, though, since all we ever do with stored procedures is process the return value, and ignore any actual SELECT results. I think it would be useful. Can you get multiple return values? By "return value", I mean the "return status" code which is an integer returned by the Sybase "RETURN" statement. Sybase also can generate its own, negative-numbered return statuses, which indicate a Sybase error. These error codes can include ones that mean the current transaction has already been aborted. Apart from the "return value", a Sybase stored procedure can execute SELECT's which result in rows being returned. We have never used this capability, so I'm not sure what would need to be done for it to be practical. We ordinarily use stored procedures only to perform inserts, updates, deletes, and other things that only need a integer result if anything. (Eg: get next counter value to assign an object identifier.) Ah, too bad. Can Sybase *only* return values through selected rows? Oracle's stored procedures are much more like traditional procedures and therefore extremely useful even when no results are returned. Jim -- Jim Fulton mailto:[EMAIL PROTECTED] Python Powered! Technical Director (888) 344-4332http://www.python.org Digital Creationshttp://www.digicool.com http://www.zope.org Under US Code Title 47, Sec.227(b)(1)(C), Sec.227(a)(2)(B) This email address may not be added to any commercial mail list with out my permission. Violation of my privacy with advertising or SPAM will result in a suit for a MINIMUM of $500 damages/incident, $1500 for repeats. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] ftp-acces to Zope: rename command
Hi, I have the following problem: One great thing in Zope is the ftp acces to objects. And in combination with the ftp-abilities of kfm and kwrite in kde1.2 it worked very nice for me to edit DTML-Documents in kwrite. But now in kde2 the the i/o System of kde (kio) has changed and when I edit an DTML-Document with kwrite in kde2 and want to save, kwrite (in fact kio) first creates a new file named file_name.part and then renames it to file_name. No the problem is that the ftp part of ZServer doesn't support to rename an object. When I type "rename file file_old" in the linux terminal-ftp client, he says: "500 'RNFR': command not understood." So I'm asking if anybody knows how to solve this problem, or if there is anybody who can tell me where in the source of Zope I have to look to implement the "rename" command in ZServer. On the IRC Zope-cannel they told me that this wouldn't be too difficult. But maybe it is already implemented an I only have to activate it... Bye, Klaus ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Do I really understanding caching?
We have been looking at caching in Zope as a way of tweaking performance. Heres an example of what I think happens: - Supposing I have a 1,000 object catalog. If one person changes an catalog aware object, that instance of the catalog will be pulled out of the ZODB and changed. It will then be written to the ZODB. That last copy will stay in the cache for as long as the "Cache Parameters" are set to allow. - If somebody changes another catalog aware object, that will repeat the above process. - However simply accessing the catalog (no changes) will pull the object from the cache. - What would be really nice is if the object only got written to the cache when it is no longer used, that way every time the catalog changed it didnt write to ZODB instead it changed the cached version. Of course that does bring up the recovering from disaster problem. So do I understand it correctly? -- Andy McKay, Developer. ActiveState. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Do I really understanding caching?
Thanks (I'm only talking about text indices here.) Note that the Catalog is actually a tree of database/cache objects. There are a series of buckets and sub-buckets that end in a word object. The buckets, sub-buckets, and words are all database objects and can be cached/updated separately. Put another way, every branch and leaf on the tree in a Catalog is a separately stored and cached database object. The 1,027 words in the document (and the branches on the tree to get to them) that was updated would obey the cache parameters. Hmm, that is a significant optimization, and one I was not aware of. What problem are you trying to solve -- response time, memory usage, disk usage? All of the above :) ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Do I really understanding caching?
Statement of possible BS: I am speaking from how I understand the catalog to work, and possibly not how it actually *does* work. :-) Andy McKay wrote: We have been looking at caching in Zope as a way of tweaking performance. Heres an example of what I think happens: - Supposing I have a 1,000 object catalog. If one person changes an catalog aware object, that instance of the catalog will be pulled out of the ZODB and changed. It will then be written to the ZODB. Actually, a subobject of the catalog which is stored in a BTree will change, and the Catalog instance will change, but it will not write the entire contents of the catalog back out to the ZODB. The current BTree implementation has some problems, so other unrelated objects in it may be changed on the write. This will be solved by updates to the catalog which use a new "broadtree" BTree implementation. That last copy will stay in the cache for as long as the "Cache Parameters" are set to allow. The changed subobjects will, yes. Unless they're manually ghosted for some other reason (rarely happens, if ever). - If somebody changes another catalog aware object, that will repeat the above process. Yes. - However simply accessing the catalog (no changes) will pull the object from the cache. Yes. - What would be really nice is if the object only got written to the cache when it is no longer used, that way every time the catalog changed it didnt write to ZODB instead it changed the cached version. Of course that does bring up the recovering from disaster problem. This would break transactional integrity. It's important that the catalog is in a self-consistent state as well as be consistent with other objects in the ZODB, and transactions help to maintain this. Is it essential that all your cataloged objects be catalog-aware? -- Chris McDonough Digital Creations, Publishers of Zope http://www.zope.org ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
