[Zope] page templates and python:
Hi, what does exactly happen when I use python: into a zpt? Is it a problem if I have many python: in my page templates? What are the differences in performances of these two definitions? metal:block tal:define=my_value my_object/getValue.../metal:block metal:block tal:define=my_value python:my_object.getValue().../metal:block thank you very much claudio :-) ___ Zope maillist - Zope@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 )
Re: [Zope] page templates and python:
--On 3. Juli 2006 15:05:36 +0200 Claudio Battaglino [EMAIL PROTECTED] wrote: Hi, what does exactly happen when I use python: into a zpt? Is it a problem if I have many python: in my page templates? What are the differences in performances of these two definitions? Talking of performance...you might write a benchmark to figure it out... no idea metal:block tal:define=my_value my_object/getValue.../metal:block metal:block tal:define=my_value python:my_object.getValue().../metal:block The main difference between both variants is that in path expressions getValue can be either an attribute or a method...so at least path expressions may have some overhead...you have to measure it. -aj pgp2Bb8wDjS0s.pgp Description: PGP signature ___ Zope maillist - Zope@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 )
Re: [Zope] page templates and python:
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 3 Jul 2006, at 15:09, Andreas Jung wrote: metal:block tal:define=my_value my_object/getValue.../ metal:block metal:block tal:define=my_value python:my_object.getValue().../metal:block The main difference between both variants is that in path expressions getValue can be either an attribute or a method...so at least path expressions may have some overhead...you have to measure it. As far as I know path expressions have better performance. I don't have the in-depth expression engine knowledge to explain why, but that's been what everyone has said to me before. jens -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.1 (Darwin) iD8DBQFEqRmaRAx5nvEhZLIRAhsIAJsHRlq94iq7c0wbeGN92JhlikUFwgCfaClc b16sWokKTRVrWo4BtvRGVhg= =tt4I -END PGP SIGNATURE- ___ Zope maillist - Zope@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 )
Re: [Zope] page templates and python:
Jens Vagelpohl ha scritto: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 3 Jul 2006, at 15:09, Andreas Jung wrote: metal:block tal:define=my_value my_object/getValue.../ metal:block metal:block tal:define=my_value python:my_object.getValue().../metal:block The main difference between both variants is that in path expressions getValue can be either an attribute or a method...so at least path expressions may have some overhead...you have to measure it. As far as I know path expressions have better performance. I don't have the in-depth expression engine knowledge to explain why, but that's been what everyone has said to me before. jens Could it be that, using a Python expression, I have an overhead because Zope loads a Python interpreter each time it finds a python:? If this is true then it is better to use path expression, if possible. claudio :-) ___ Zope maillist - Zope@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 )
Re: [Zope] page templates and python:
--On 3. Juli 2006 15:38:58 +0200 Claudio Battaglino [EMAIL PROTECTED] wrote: Jens Vagelpohl ha scritto: Could it be that, using a Python expression, I have an overhead because Zope loads a Python interpreter each time it finds a python:? If this is true then it is better to use path expression, if possible. nahPython expression are executed in a sandbox (RestrictedPython) which will introduce additional overhead..but let numbers speak...write a loop in TAL and compare the performance of path expressions vs. python expressions... don't guess, but measure... -aj pgpZL6GLQNSgL.pgp Description: PGP signature ___ Zope maillist - Zope@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] Re: page templates and python:
Claudio Battaglino schrieb: Hi, what does exactly happen when I use python: into a zpt? Is it a problem if I have many python: in my page templates? Path expressions are by far better human readable IMHO. I try very hard to avoid Python expressions if possible. To give you an example: I prefer option tal:attributes=selected item/selected ... over option tal:attributes=python: test(foo == bar, 'selected', None) ... . But also because in the first example the template doesn't need to know about implementation details and thus it is better reusable e.g. as macro. Tonico ___ Zope maillist - Zope@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 )
Re: [Zope] Re: page templates and python:
--On 3. Juli 2006 15:50:41 +0200 Tonico Strasser [EMAIL PROTECTED] wrote: Claudio Battaglino schrieb: Hi, what does exactly happen when I use python: into a zpt? Is it a problem if I have many python: in my page templates? Path expressions are by far better human readable IMHO. I try very hard to avoid Python expressions if possible. (Un)fortunately we live a in world where methods may have parameters. Path expressions work only for parameter-less methods. -aj pgpxdaU9NjPMD.pgp Description: PGP signature ___ Zope maillist - Zope@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] Re: page templates and python:
Small correction ... option tal:attributes=python: test(foo == bar, 'selected', None) ... Should be: option tal:attributes=selected python: test(foo == bar, 'selected', None) ... ___ Zope maillist - Zope@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 )
Re: [Zope] page templates and python:
Actually, I think python: expressions perform slightly better than their path: counterparts because their evaluation step needs to do less work (no guessing about getitem vs. getattr). Geoff Davis taught me that. But in the end it's all dwarfed by the penalty imposed by security, so it really doesn't much matter. On Jul 3, 2006, at 9:20 AM, Jens Vagelpohl wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 3 Jul 2006, at 15:09, Andreas Jung wrote: metal:block tal:define=my_value my_object/getValue.../ metal:block metal:block tal:define=my_value python:my_object.getValue().../metal:block The main difference between both variants is that in path expressions getValue can be either an attribute or a method...so at least path expressions may have some overhead...you have to measure it. As far as I know path expressions have better performance. I don't have the in-depth expression engine knowledge to explain why, but that's been what everyone has said to me before. jens -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.1 (Darwin) iD8DBQFEqRmaRAx5nvEhZLIRAhsIAJsHRlq94iq7c0wbeGN92JhlikUFwgCfaClc b16sWokKTRVrWo4BtvRGVhg= =tt4I -END PGP SIGNATURE- ___ Zope maillist - Zope@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@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 )
Re: [Zope] wher i can find network device content types to develop network manage system?
Hi LYNN develope a network manage sytem based on zope/plone on web. Maybe you can find something useful here: http://zenoss.org/ Zenoss is a powerful, integrated, easy-to-use IT infrastructure monitoring software product. [...] Zenoss is a written in Python using Zope, MySQL, RRDtool, PySNMP, Net-SNMP, libsmi, sendpage, Twisted and several other open source components. -- jean ___ Zope maillist - Zope@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 )
Re: [Zope] page templates and python:
On 7/3/06, Chris McDonough [EMAIL PROTECTED] wrote: Actually, I think python: expressions perform slightly better than their path: counterparts because their evaluation step needs to do less work (no guessing about getitem vs. getattr). Geoff Davis taught me that. But in the end it's all dwarfed by the penalty imposed by security, so it really doesn't much matter. Right. So the best and quickest is to prepare all the data in pure disk-based python. It's easy to do if you use the view methodology you get with Five, but there are other ways to do it if you don't want to use views. ___ Zope maillist - Zope@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 )
Re: [Zope] page templates and python:
Andreas Jung ha scritto: --On 3. Juli 2006 15:38:58 +0200 Claudio Battaglino [EMAIL PROTECTED] wrote: Jens Vagelpohl ha scritto: Could it be that, using a Python expression, I have an overhead because Zope loads a Python interpreter each time it finds a python:? If this is true then it is better to use path expression, if possible. nahPython expression are executed in a sandbox (RestrictedPython) which will introduce additional overhead..but let numbers speak...write a loop in TAL and compare the performance of path expressions vs. python expressions... don't guess, but measure... -aj It seems that the Python Expression works a bit better: To the test this, I used these two Page Templates and PTProfiler: PATH EXPRESSION div tal:define=test_user here/portal_membership/getAuthenticatedMember tal:repeat=counter python:range(5000) span tal:content=test_user/getId / /div PYTHON EXPRESSION div tal:define=test_user here/portal_membership/getAuthenticatedMember tal:repeat=counter python:range(5000) span tal:content=python: test_user.getId() / /div PATH EXPRESSION Expression - Total time - Number of calls - Time per call path: test_user/getId 0.7250000.00014 path: test_user/getId 0.6350000.00013 path: test_user/getId 0.7250000.00014 path: test_user/getId 4.0 5 8e-05 path: test_user/getId 4.095 8e-05 path: test_user/getId 4.125 8e-05 PYTHON EXPRESSION Expression - Total time - Number of calls - Time per call python: test_user.getId() 0.6 50000.00012 python: test_user.getId() 0.5150000.0001 python: test_user.getId() 0.4850000.0001 python: test_user.getId() 3.195 6e-05 python: test_user.getId() 3.425 7e-05 python: test_user.getId() 2.965 6e-05 Is it a significant test? claudio :-) ___ Zope maillist - Zope@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] Re: page templates and python:
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Lennart Regebro wrote: On 7/3/06, Chris McDonough [EMAIL PROTECTED] wrote: Actually, I think python: expressions perform slightly better than their path: counterparts because their evaluation step needs to do less work (no guessing about getitem vs. getattr). Geoff Davis taught me that. But in the end it's all dwarfed by the penalty imposed by security, so it really doesn't much matter. Right. So the best and quickest is to prepare all the data in pure disk-based python. It's easy to do if you use the view methodology you get with Five, but there are other ways to do it if you don't want to use views. My 'pushpage' package is an attempt to make this the standard pattern (pushpage templates don't have *any* top-level names available to them (i.e., 'context', 'container', 'request', etc.) except those passed to their '__call__' as keyword arguments (which traditional ZPT exposes under 'options'): http://agendaless.com/Members/tseaver/software/pushpage The templates can be used from within methods of view classes, and can also be published as pages via ZCML with the help of a user-defined callable which computes the keyword arguments. E.g.: pushpage:view for=.interfaces.ISomeContentInterface name=somepage.html permission=zope.Public template=templates/sometemplate.pt mapping=.somemodule,somefunction layer=mylayer / In this example, 'somemodule.somefunction' returns the mapping which 'sometemplate' will use as its top-level namespace. The callable is passed 'context' and 'request' as arguments. Tres. - -- === Tres Seaver +1 202-558-7113 [EMAIL PROTECTED] Palladion Software Excellence by Designhttp://palladion.com -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFEqTxk+gerLs4ltQ4RArSWAJ90L7NT76aPuaIk9a7cQj222qYM6QCfRPrZ gN4Q7fIm63hA4HUoViIwdBk= =2aTX -END PGP SIGNATURE- ___ Zope maillist - Zope@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 )
Re: [Zope] page templates and python:
On 7/3/06, Claudio Battaglino [EMAIL PROTECTED] wrote: Is it a significant test? Yes, for the use case of in-memory objects and methods. You might want to do the same with a traversal path nocall:context/folder1/folder2/folder3, or something, and then python:context.folder1.folder2.folder3 -- Lennart Regebro, Nuxeo http://www.nuxeo.com/ CPS Content Management http://www.cps-project.org/ ___ Zope maillist - Zope@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 )
Re: [Zope] [ANN] TextIndexNG 3.1.10 released
On Saturday 03 of June 2006 15:28, Andreas Jung wrote: I am pleased to announce the release of TextIndexNG V 3.1.10 Hi, I have just tried TextIndexNG V 3.1.9 in Zope 2.9.3 and it shows in Control_Panels/Products as installed... I did compile the modules as required by README... but an instance of TextIndexNG cannot be added, because it is not among addable types. Is this normal? Does TextIndexNG3 have a web interface? -- Milos Prudek ___ Zope maillist - Zope@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 )
Re: [Zope] [ANN] TextIndexNG 3.1.10 released
--On 3. Juli 2006 21:16:53 +0200 MIlos Prudek [EMAIL PROTECTED] wrote: On Saturday 03 of June 2006 15:28, Andreas Jung wrote: I am pleased to announce the release of TextIndexNG V 3.1.10 Hi, I have just tried TextIndexNG V 3.1.9 in Zope 2.9.3 and it shows in Control_Panels/Products as installed... I did compile the modules as required by README... but an instance of TextIndexNG cannot be added, because it is not among addable types. Is this normal? Does TextIndexNG3 have a web interface? Huh? Since it is a index it must be added to a ZCatalog instance as any other index. -aj pgpGz0vcUVMaV.pgp Description: PGP signature ___ Zope maillist - Zope@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 )
Re: [Zope] Rollback and delete weird behavior
Luiz Fernando B. Ribeiro wrote at 2006-7-1 14:24 -0300: ... The problem is that the raise is not rolling back the delete, looking in mysql log the following sequence was found: Be warned that mysql needs special precaution to be transaction aware. Your mysql connection may have been made transaction unaware (to allow the use of non-transaction capable tables). -- Dieter ___ Zope maillist - Zope@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 )
