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Re: Re: [Zope] Need Help--urgently
by cpdm cadlab 07 Sep '06

07 Sep '06

On Thu, 07 Sep 2006 David H wrote : >Martijn Pieters wrote: > >>cpdm cadlab wrote: >> >>> thanks for the quick reply. I am glad to be here on active ZOPE >>>mailing list. >>> >> >>Let's keep it on the list then; no personal email please. >> >> >>> I had initially done the way you have suggested, but it doesn't work >>>in the sense I get a empty list as output, which I know isn't empty. >>> >> >>Then something is wrong with the external method. Use a debugger (pdb, >>Wing, Komodo, etc.) or spurious logging (import logger; >>logger.getLogger('yourmodule').log) to trace your code. >> >> >>>This made me think that I was making silly mistake. If I run external >>>method in python shell it shows the mlist, which is non-empty, but if I >>>ask the same to python script to do what it prints is this : [] >>> What do you think is wrong. A further code goes like this: >>>mlist = context.code(uparam) >>>if len(mlist) == str(0): >>> print "Sorry no suitable method found in database" >>> return printed >>>else: >>> print mlist >>> return printed >>> >> >>Use "if not len(mlist):"; comparing the length to str(0) is always >>false. "len" returns an integer, not a string, so 0 == '0' will never be >>True. >> >>You can also call the external method directly if you encode the >>arguments passed to it in the query string. Just open up a python >>propmt, import urllib and call urllib.quote on your argument list to >>hand-construct a URL. >> >>Moreover, get decent books on Python and on Web programming in general. >> >>Martijn Pieters >> >Martijn, > >I wonder which books would recommend? Best I can say is that books just about HTTP are probably the least appreciated and often the most useful. > >David > Well sure it takes time to acquire etiquette for newcomer. I am stuck but hopefully will solve it out. thanks a lot to both of you. m.d.

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How to reference an object under a given folder
by Sinang, Danny 07 Sep '06

07 Sep '06

Hello, I want to reference an object named "Es" found in the directory /apps/wms . I'd normally create a script in /apps/wms and issue the command obj = getattr(context,"Es") . But how do I do so from a script located elsewhere ? Regards, Danny

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RE: [Zope] Zope hangs when database takes too long to respond
by Sinang, Danny 07 Sep '06

07 Sep '06

> Seems that all your Zope threads are busy (they're waiting for database response). There is no more threads to serve next requests so they're waiting (you may say that zope hangs in this situation, but in fact all it's threads are waiting for DB). You may install DeadlockDebugger product and you'll be able to see what your's Zope threads are really doing. Thanks. Besides DeadlockDebugger, is there a way to see just how many threads Zope is currently using ? Regards, Danny

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zope 3 invisibility
by Carlos de la Guardia 07 Sep '06

07 Sep '06

Hello everyone, I frequently blog about Zope, and recently posted a list of 10 reasons why I think Zope 3 is kind of invisible to the Python community (see my blog at http://blog.delaguardia.com.mx) One of the things that I talk about in that post is that the Zope community tends to interact more through its mailing lists than its blogs, as opposed to other so-called modern frameworks, like Django and Turbogears. I have been following the efforts of the Zope 3 developers and sometimes wonder why this invisibility effect takes place. That's why I decided to see if anyone on this list feels like commenting about this, or any of my other 10 points. I am very interested in the dynamics of the Zope community and the place of Zope in the larger Python community, and would be very thankful for any comments, here or on the blog. Thanks very much. Carlos de la Guardia

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RE: [Zope] custom_zodb.py
by Sinang, Danny 07 Sep '06

07 Sep '06

Per http://www.plope.com/Books/2_7Edition/MaintainingZope.stx#2-27 , it still says write your own custom_zodb.py . Can you point me to the exact location ? Regards, Danny -----Original Message----- From: zope-bounces(a)zope.org [mailto:zope-bounces@zope.org] On Behalf Of Paul Winkler Sent: Thursday, September 07, 2006 9:16 AM To: zope(a)zope.org Subject: Re: [Zope] custom_zodb.py Unless you are using Zope 2.6, don't do that. For Zope 2.7 or later, see the 2.7 version of the book at plope.com. Some chapters were never updated from the 2.6 version but even so it's much improved. For zope 2.7 or later, what you want to do is now done by editing zope.conf. On Thu, Sep 07, 2006 at 08:44:08AM +0800, Sinang, Danny wrote: > In the Zope Book v2.6, it says : > > "Each database connection maintains its own cache (see above, > "Database Cache"), so bumping the number of connections up increases > memory requirements. Only change this setting if you're sure you have > the memory to spare. > > To change this setting, create a file called "custom_zodb.py" in your > Zope installation directory. In this file, put the following code:" > > Am not sure which directory "Zope installation directory" pertains to. > > Is this the fresh directory from the Zope .tar.gz file ? > > Or is this the already-installed directory ? Or would it be the > instance directory ? If so, which subdirectory do I place custom_zodb.py ? > > Regards, > Danny > > _______________________________________________ > 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 ) -- Paul Winkler http://www.slinkp.com _______________________________________________ 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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custom_zodb.py
by Sinang, Danny 07 Sep '06

07 Sep '06

In the Zope Book v2.6, it says : "Each database connection maintains its own cache (see above, "Database Cache"), so bumping the number of connections up increases memory requirements. Only change this setting if you're sure you have the memory to spare. To change this setting, create a file called "custom_zodb.py" in your Zope installation directory. In this file, put the following code:" Am not sure which directory "Zope installation directory" pertains to. Is this the fresh directory from the Zope .tar.gz file ? Or is this the already-installed directory ? Or would it be the instance directory ? If so, which subdirectory do I place custom_zodb.py ? Regards, Danny

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Re: [Zope] Need Help--urgently
by Martijn Pieters 06 Sep '06

06 Sep '06

cpdm cadlab wrote: > thanks for the quick reply. I am glad to be here on active ZOPE > mailing list. Let's keep it on the list then; no personal email please. > I had initially done the way you have suggested, but it doesn't work > in the sense I get a empty list as output, which I know isn't empty. Then something is wrong with the external method. Use a debugger (pdb, Wing, Komodo, etc.) or spurious logging (import logger; logger.getLogger('yourmodule').log) to trace your code. > This made me think that I was making silly mistake. If I run external > method in python shell it shows the mlist, which is non-empty, but if I > ask the same to python script to do what it prints is this : [] > What do you think is wrong. A further code goes like this: > mlist = context.code(uparam) > if len(mlist) == str(0): > print "Sorry no suitable method found in database" > return printed > else: > print mlist > return printed Use "if not len(mlist):"; comparing the length to str(0) is always false. "len" returns an integer, not a string, so 0 == '0' will never be True. You can also call the external method directly if you encode the arguments passed to it in the query string. Just open up a python propmt, import urllib and call urllib.quote on your argument list to hand-construct a URL. Moreover, get decent books on Python and on Web programming in general. Martijn Pieters

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Need Help--urgently
by cpdm cadlab 06 Sep '06

06 Sep '06

I am sure it should be trivial, but being newbee makes me shameless :)    What I am in need of is guideline about how to integrate python script and external python method.    I have a form through which I collect user input and forward it to a python script, which concatenates input in certain pattern and    feeds it to external method. Now external method runs fine and puts the results in a list called mlist. What I want to know is how    do  I  fetch the \"return mlist\" resulting from external method back to the python script which gave the input to it for processing.     The python script is named which searchuparam which gets user input from form and does something like this:uparam = str(0) + \",\" + str(0) + \",\" + str(1) + \",\" + str(0) + \",\" + str(0) + \",\" + str(DO) \\            + \",\" + str(NL) + \",\" + str(0) + \",\" + str(0) + \",\" + str(0) + \",\" + str(0) \\            + \",\" + str(TIME) +  \",\" + str(WM) + \",\" + str(NOP) + \",\" + str(EXP) + \",\" + str(GKH)context.code(uparam)code is the id of external method which processes uparam and at the end has statement return mlist   this mlist is what I am interested in getting back. I want external method to return me this list to my python script searchuparam. I tried reading and did google last week but without success. Any help is appreciated. TIA.yours md

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RE: [Zope] Zope hangs when database takes too long to respond
by Sinang, Danny 06 Sep '06

06 Sep '06

Sorry for the typo error. The subject should read "hangs", not "hands" . ________________________________ From: zope-bounces(a)zope.org [mailto:zope-bounces@zope.org] On Behalf Of Sinang, Danny Sent: Wednesday, September 06, 2006 10:56 PM To: zope(a)zope.org Subject: [Zope] Zope hands when database takes too long to respond Hello, We wrote an application (on Zope v2.7.6-final) that queries a MySQL database via ZMySQLDA v2.0.8. Whenever the MySQL server experiences heavy load, Zope seems to hang, such that we can't even access the ZMI. Is this a bug in version 2.7.6 or ZMySQLDA ? Or are there some settings I can tweak to adjust some database connection timeout value ? Regards, Danny

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Re: [Zope] Zope 2.9.3/2.9.1 On Suse 10.1 box version
by Jeremy Smith 06 Sep '06

06 Sep '06

Howdy-- I just ran into this same problem. After much poking around, it turned out that the source of the problem was that the zlib module for Python had not been compiled because I didn't have the zlib development stuff (in zlib-devel on RH and similar, not sure about Suse) installed. Installing zlib-devel, then recompiling Python from source solved the problem. Best, Jeremy. zope-request(a)zope.org wrote: >Date: Wed, 5 Jul 2006 20:51:28 +0200 >From: dieter(a)handshake.de >Subject: Re: [Zope] Zope 2.9.3/2.9.1 On Suse 10.1 box version >To: lists(a)weisglass.net >Cc: zope(a)zope.org >Message-ID: <17580.2608.567655.46659(a)gargle.gargle.HOWL> >Content-Type: text/plain; charset=us-ascii > >Ofer Weisglass wrote at 2006-7-5 01:38 +0300: > > >>> ... >>>I updated the python to the last version and this is what I get after the >>>zope installation was over with no errors (already created instance, >>>username and password) >>> >>>Traceback (most recent call last): >>> ... >>> setImplementation("C") >>> File "/usr/software/zope/lib/python/AccessControl/Implementation.py", >>>line 51, in setImplementation >>> from AccessControl import ImplC as impl >>> File "/usr/software/zope/lib/python/AccessControl/ImplC.py", line 30, in ? >>> from ImplPython import RestrictedDTML, SecurityManager, >>>ZopeSecurityPolicy >>>ImportError: No module named ImplPython >> >> > >This looks like a missing installation step (generation of the >C-extensions did not happen). > >Recheck the installation instructions and try again. > > > > -- Dieter >

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