[Zope-dev] Re: Zope 3 on Python 2.5, Zope 3 releases

2008-07-18 Thread Hanno Schlichting 

Chris Withers wrote:

Martijn Faassen wrote:

Okay, so we can safely add Chris (and also Philipp) to the list of
people maintaining our windows binary eggs. Awesome! Chris, do you
think you can take it from here in getting an environment set up?


Would be rgeat to have a bullet point list for how to get a suitable 
environment set up given that I don't have mingw32 and have never used 
it before in my life :-S


There are too tutorials out there:

http://www.z3lab.org/sections/blogs/philipp-weitershausen/2007_07_26_cheap-binary-windows

is the simple version.

http://plone.org/documentation/how-to/using-ploneout-on-windows

Is the more detailed one including screenshots...

Hanno

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[Zope-dev] Re: Zope 3 on Python 2.5, Zope 3 releases

2008-07-18 Thread Hanno Schlichting 

Chris Withers wrote:

Sidnei da Silva wrote:
On Fri, Jul 18, 2008 at 1:23 PM, Chris Withers 
[EMAIL PROTECTED] wrote:

Would be rgeat to have a bullet point list for how to get a suitable
environment set up given that I don't have mingw32 and have never 
used it

before in my life :-S


Like this?

http://plone.org/documentation/how-to/using-ploneout-on-windows


But I'm alergic to things with plohn in the title 0.5 wink


That's why I posted you the link to the tutorial from Phillip as well, 
so even if you'd look into mine, you wouldn't have to admit it ;)


Hanno

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[Zope-dev] Re: Zope 3 on Python 2.5, Zope 3 releases

2008-07-18 Thread Martin Aspeli 

Chris Withers wrote:

Martijn Faassen wrote:

Okay, so we can safely add Chris (and also Philipp) to the list of
people maintaining our windows binary eggs. Awesome! Chris, do you
think you can take it from here in getting an environment set up?


Would be rgeat to have a bullet point list for how to get a suitable 
environment set up given that I don't have mingw32 and have never used 
it before in my life :-S


I've pointed you at the Windows section in 
http://plone.org/documentation/tutorial/buildout/prerequisites at least 
once now.


Maybe you'll manage to swallow your aversion to Plone and read it this 
time? It really isn't hard at all.


Martin

--
Author of `Professional Plone Development`, a book for developers who
want to work with Plone. See http://martinaspeli.net/plone-book

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[Zope-dev] Re: Zope 3 on Python 2.5, Zope 3 releases

2008-07-15 Thread Martin Aspeli 

Chris Withers wrote:

Stephan Richter wrote:

On Saturday 12 July 2008, Martijn Faassen wrote:

Chris wants to do them, he just wants some documentation on how to get
started, I suspect.

I use Philipp's blog entry from ages ago:

http://www.z3lab.org/sections/blogs/philipp-weitershausen/2007_07_26_cheap-binary-windows


You see, I've always worried about using mingw32.

I was under the impression that you really wanted to have all the C bits 
compiled with the same compiler, and I know that the official Python 2.5 
releases aren't compiled with mingw32...


Can someone with definitive knowledge let us know if there can be 
problems when some C-extensions are compiled with mingw32 and others 
(including python itself!) are compiled with the appropriate microsoft 
compiler?


Certainly, running Python 2.4 and Zope 2.10 compiled with mingw32 on 
Windows as per http://plone.org/documentation/tutorial/buildout has not 
given us any problems after a few months of using it.


Martin

--
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want to work with Plone. See http://martinaspeli.net/plone-book

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Re: [Zope-dev] Re: Zope 3 on Python 2.5, Zope 3 releases

2008-07-15 Thread Chris Withers 

Martin Aspeli wrote:
Certainly, running Python 2.4 and Zope 2.10 compiled with mingw32 on 
Windows as per http://plone.org/documentation/tutorial/buildout has not 
given us any problems after a few months of using it.


I'm not sure if you're deliberately missing my point here ;-)

I would expect the above to work as *everything* is built using mingw32.

I'm asking what happens if python is built using whatever the official 
python releases are built with but the c extensions we provide are built 
with mingw32?


cheers,

Chris

--
Simplistix - Content Management, Zope  Python Consulting
   - http://www.simplistix.co.uk
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[Zope-dev] Re: Zope 3 on Python 2.5, Zope 3 releases

2008-07-15 Thread Hanno Schlichting 

Chris Withers wrote:

Martin Aspeli wrote:
Certainly, running Python 2.4 and Zope 2.10 compiled with mingw32 on 
Windows as per http://plone.org/documentation/tutorial/buildout has 
not given us any problems after a few months of using it.


I would expect the above to work as *everything* is built using mingw32.


No, it is not. It uses the official Python Windows installer, being 
built with some M$ C compiler, adds Python Win32 add-ons and PIL using 
the Windows binary installers and only advertises using MinGW for 
compiling all of Zope itself.


I haven't seen anyone running into any problems with this approach for 
years now.


From my understanding starting with 2.4 Python includes certain files 
to make this approach work as smooth as possible. In the old days you 
had to extract some header files out of the dll's, which are now 
included in the binary installers by default.


Hanno

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[Zope-dev] Re: Zope 3 on Python 2.5, Zope 3 releases

2008-07-14 Thread Martijn Faassen 
Hi there,

Tres, could you report this issue on Launchpad?

Not Lorenzo's issue as it happens with an empty container, but perhaps
we can work out a bug report for the ZODB folks as well. Just dig into
what's up in .values() or .items() and where the error exactly occurs,
perhaps this way we can come up with a very small ZODB sample
application.

Regards,

Martijn
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Re: [Zope-dev] Re: Zope 3 on Python 2.5, Zope 3 releases

2008-07-14 Thread Tim Cook 
I have reported Bug 248380: on this issue.

The problem seems to me to be in building the .c modules.  That causes
the MemoryError that Lorenzo reported but it isn't the root of the
problem.  There are a large number of warning: initialization from
incompatible pointer type issues. 

--Tim 


On Mon, 2008-07-14 at 13:30 +0200, Martijn Faassen wrote:
 Hi there,
 
 Tres, could you report this issue on Launchpad?
 
 Not Lorenzo's issue as it happens with an empty container, but perhaps
 we can work out a bug report for the ZODB folks as well. Just dig into
 what's up in .values() or .items() and where the error exactly occurs,
 perhaps this way we can come up with a very small ZODB sample
 application.
 
 Regards,
 
 Martijn
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[Zope-dev] Re: Zope 3 on Python 2.5, Zope 3 releases

2008-07-14 Thread Tres Seaver 
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Martijn Faassen wrote:

 Tres, could you report this issue on Launchpad?

Once we establish what the problem is for sure.

 Not Lorenzo's issue as it happens with an empty container, but perhaps
 we can work out a bug report for the ZODB folks as well. Just dig into
 what's up in .values() or .items() and where the error exactly occurs,
 perhaps this way we can come up with a very small ZODB sample
 application.

One thing I notice right away:  the ZODB egg pulled from PyPI is:
'ZODB3-3.9.0_dev_r77011'.  We have *got* to get people to quit
releasing such eggs to the unsuspecting public.  Anybody who needs
such a distribution should be able to build it from subversion, or else
package it themselves and put it in a private location.

I guess this package was found at http://download.zope.org/distribution.
 I imagine that 'zopeproject' should use a buildout.cfg which points at
a sane index (e.g., the KGS), and *doesn't* use 'find-links' at all


Tres.
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[Zope-dev] Re: Zope 3 on Python 2.5, Zope 3 releases

2008-07-14 Thread Tres Seaver 
-BEGIN PGP SIGNED MESSAGE-
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Tres Seaver wrote:
 Martijn Faassen wrote:
 
 Tres, could you report this issue on Launchpad?
 
 Once we establish what the problem is for sure.
 
 Not Lorenzo's issue as it happens with an empty container, but perhaps
 we can work out a bug report for the ZODB folks as well. Just dig into
 what's up in .values() or .items() and where the error exactly occurs,
 perhaps this way we can come up with a very small ZODB sample
 application.
 
 One thing I notice right away:  the ZODB egg pulled from PyPI is:
 'ZODB3-3.9.0_dev_r77011'.  We have *got* to get people to quit
 releasing such eggs to the unsuspecting public.  Anybody who needs
 such a distribution should be able to build it from subversion, or else
 package it themselves and put it in a private location.
 
 I guess this package was found at http://download.zope.org/distribution.
  I imagine that 'zopeproject' should use a buildout.cfg which points at
 a sane index (e.g., the KGS), and *doesn't* use 'find-links' at all

Another issue:  when running 'zopeproject' as Lorenzo described on my
machine, the target environment ends up actually wiring in a Python

 $ cd /tmp
 $ /usr/bin/python2.5 /path/to/virtualenv.py --no-site-packages lgs2.5
 ...
 $ cd /tmp/lgs2.5
 $ bin/python -V
 Python 2.5.2
 $ bin/easy_install zopeproject
 ...
 $ head -1 bin/paster
 #!/tmp/lgs2.5/bin/python
 $ bin/zopeproject HelloWorld
 ...
 $ head -1 HelloWorld/bin/paster
 #!/home/tseaver/projects/Zope-CVS/bin/python2.4


Tres.
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Re: [Zope-dev] Re: Zope 3 on Python 2.5, Zope 3 releases

2008-07-14 Thread Shane Hathaway 

Lorenzo Gil Sánchez wrote:

I tried to go further and discover the source of this problem adding a
breakpoint just before the exception is raised. This is what I got:

(Pdb) self.context
zope.app.folder.folder.Folder object at 0x7faf532e4320
(Pdb) self.context.keys()
OOBTreeItems object at 0x7faf52682030
(Pdb) tuple(self.context.keys())
*** MemoryError: 


I just committed a fix to the trunk of zope.proxy, zope.security, and 
zope.app.container.  They all needed the Py_ssize_t conversion as 
described by PEP 353.  Without the conversion, Python extensions running 
under 64 bit Python 2.5 tend to break with MemoryErrors.  The 
MemoryErrors are caused by C code filling only 4 bytes of an 8 byte 
length value; the remaining 4 bytes end up with random junk, leading 
various code to believe the extension wants to allocate far more memory 
than it actually needs.


We might want to backport the fix, but I don't know which branches are 
being maintained.


Shane

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[Zope-dev] Re: Zope 3 on Python 2.5, Zope 3 releases

2008-07-13 Thread Tres Seaver 
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Hash: SHA1

Lorenzo Gil Sánchez wrote:
 Here is the traceback information:
 
 2008-07-13T10:44:37 ERROR SiteError http://127.0.0.1:8080/@@index.html
 Traceback (most recent call last):
   File
 /home/lgs/z3env25/eggs/tmpbLKU14/zope.publisher-3.5.3-py2.5.egg/zope/publisher/publish.py,
  line 133, in publish
   File
 /home/lgs/z3env25/eggs/tmpaC6Rf5/zope.app.publication-3.4.3-py2.5.egg/zope/app/publication/zopepublication.py,
  line 167, in callObject
   File
 /home/lgs/z3env25/eggs/tmpbLKU14/zope.publisher-3.5.3-py2.5.egg/zope/publisher/publish.py,
  line 108, in mapply
- __traceback_info__: bound method Contents.index of
 zope.app.publisher.browser.viewmeta.Contents object at 0x7f0b7de06990
   File
 /home/lgs/z3env25/eggs/tmpbLKU14/zope.publisher-3.5.3-py2.5.egg/zope/publisher/publish.py,
  line 114, in debug_call
   File
 /home/lgs/z3env25/eggs/tmp8cmA1c/zope.app.container-3.6.0-py2.5-linux-x86_64.egg/zope/app/container/browser/contents.py,
  line 443, in index
   File
 /home/lgs/z3env25/eggs/tmp6KzCKG/zope.app.pagetemplate-3.4.0-py2.5.egg/zope/app/pagetemplate/viewpagetemplatefile.py,
  line 83, in __call__
   File
 /home/lgs/z3env25/eggs/tmp6KzCKG/zope.app.pagetemplate-3.4.0-py2.5.egg/zope/app/pagetemplate/viewpagetemplatefile.py,
  line 51, in __call__
   File
 /home/lgs/z3env25/eggs/tmprTDkjU/zope.pagetemplate-3.4.0-py2.5.egg/zope/pagetemplate/pagetemplate.py,
  line 115, in pt_render
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 271, in __call__
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 343, in interpret
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 888, in do_useMacro
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 343, in interpret
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 533, in do_optTag_tal
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 518, in do_optTag
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 513, in no_tag
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 343, in interpret
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 858, in do_defineMacro
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 343, in interpret
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 954, in do_defineSlot
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 343, in interpret
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 946, in do_defineSlot
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 343, in interpret
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 819, in do_loop_tal
   File
 /home/lgs/z3env25/eggs/tmpXUllta/zope.tales-3.4.0-py2.5.egg/zope/tales/tales.py,
  line 682, in setRepeat
   File
 /home/lgs/z3env25/eggs/tmpXUllta/zope.tales-3.4.0-py2.5.egg/zope/tales/tales.py,
  line 696, in evaluate
 
 - 
 /home/lgs/z3env25/eggs/zope.app.container-3.6.0-py2.5-linux-x86_64.egg/zope/app/container/browser/index.pt
- Line 36, Column 6
- Expression: PathExpr standard:u'view/listContentInfo'
- Names:
   {'args': (),
'context': zope.app.folder.folder.Folder object at
 0x7f0b7e9762a8,
'default': object object at 0x7f0b8a11c290,
'loop': {},
'nothing': None,
'options': {},
'repeat': {},
'request': zope.publisher.browser.BrowserRequest instance
 URL=http://127.0.0.1:8080/@@index.html,
'template':
 zope.app.pagetemplate.viewpagetemplatefile.ViewPageTemplateFile object
 at 0x7f0b8122d110,
'view': zope.app.publisher.browser.viewmeta.Contents object at
 0x7f0b7de06990,
'views': zope.app.pagetemplate.viewpagetemplatefile.ViewMapper
 object at 0x7f0b7de06a10}
   File
 /home/lgs/z3env25/eggs/tmpXUllta/zope.tales-3.4.0-py2.5.egg/zope/tales/expressions.py,
  line 217, in __call__
   File
 /home/lgs/z3env25/eggs/tmpXUllta/zope.tales-3.4.0-py2.5.egg/zope/tales/expressions.py,
  line 211, in _eval
   File
 /home/lgs/z3env25/eggs/tmp8cmA1c/zope.app.container-3.6.0-py2.5-linux-x86_64.egg/zope/app/container/browser/contents.py,
  line 97, in listContentInfo
   File
 /home/lgs/z3env25/eggs/tmp8cmA1c/zope.app.container-3.6.0-py2.5-linux-x86_64.egg/zope/app/container/browser/contents.py,
  line 123, in _normalListContentsInfo
 MemoryError
 
 
 Steps to reproduce this problem:
 
 virtualenv

[Zope-dev] Re: Zope 3 on Python 2.5, Zope 3 releases

2008-07-13 Thread Tres Seaver 
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Hash: SHA1

Tres Seaver wrote:
 Lorenzo Gil Sánchez wrote:
 Here is the traceback information:
 
 2008-07-13T10:44:37 ERROR SiteError http://127.0.0.1:8080/@@index.html
 Traceback (most recent call last):
   File
 /home/lgs/z3env25/eggs/tmpbLKU14/zope.publisher-3.5.3-py2.5.egg/zope/publisher/publish.py,
  line 133, in publish
   File
 /home/lgs/z3env25/eggs/tmpaC6Rf5/zope.app.publication-3.4.3-py2.5.egg/zope/app/publication/zopepublication.py,
  line 167, in callObject
   File
 /home/lgs/z3env25/eggs/tmpbLKU14/zope.publisher-3.5.3-py2.5.egg/zope/publisher/publish.py,
  line 108, in mapply
- __traceback_info__: bound method Contents.index of
 zope.app.publisher.browser.viewmeta.Contents object at 0x7f0b7de06990
   File
 /home/lgs/z3env25/eggs/tmpbLKU14/zope.publisher-3.5.3-py2.5.egg/zope/publisher/publish.py,
  line 114, in debug_call
   File
 /home/lgs/z3env25/eggs/tmp8cmA1c/zope.app.container-3.6.0-py2.5-linux-x86_64.egg/zope/app/container/browser/contents.py,
  line 443, in index
   File
 /home/lgs/z3env25/eggs/tmp6KzCKG/zope.app.pagetemplate-3.4.0-py2.5.egg/zope/app/pagetemplate/viewpagetemplatefile.py,
  line 83, in __call__
   File
 /home/lgs/z3env25/eggs/tmp6KzCKG/zope.app.pagetemplate-3.4.0-py2.5.egg/zope/app/pagetemplate/viewpagetemplatefile.py,
  line 51, in __call__
   File
 /home/lgs/z3env25/eggs/tmprTDkjU/zope.pagetemplate-3.4.0-py2.5.egg/zope/pagetemplate/pagetemplate.py,
  line 115, in pt_render
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 271, in __call__
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 343, in interpret
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 888, in do_useMacro
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 343, in interpret
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 533, in do_optTag_tal
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 518, in do_optTag
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 513, in no_tag
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 343, in interpret
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 858, in do_defineMacro
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 343, in interpret
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 954, in do_defineSlot
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 343, in interpret
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 946, in do_defineSlot
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 343, in interpret
   File
 /home/lgs/z3env25/eggs/tmpjL9hPq/zope.tal-3.5.0-py2.5.egg/zope/tal/talinterpreter.py,
  line 819, in do_loop_tal
   File
 /home/lgs/z3env25/eggs/tmpXUllta/zope.tales-3.4.0-py2.5.egg/zope/tales/tales.py,
  line 682, in setRepeat
   File
 /home/lgs/z3env25/eggs/tmpXUllta/zope.tales-3.4.0-py2.5.egg/zope/tales/tales.py,
  line 696, in evaluate
 
 - 
 /home/lgs/z3env25/eggs/zope.app.container-3.6.0-py2.5-linux-x86_64.egg/zope/app/container/browser/index.pt
- Line 36, Column 6
- Expression: PathExpr standard:u'view/listContentInfo'
- Names:
   {'args': (),
'context': zope.app.folder.folder.Folder object at
 0x7f0b7e9762a8,
'default': object object at 0x7f0b8a11c290,
'loop': {},
'nothing': None,
'options': {},
'repeat': {},
'request': zope.publisher.browser.BrowserRequest instance
 URL=http://127.0.0.1:8080/@@index.html,
'template':
 zope.app.pagetemplate.viewpagetemplatefile.ViewPageTemplateFile object
 at 0x7f0b8122d110,
'view': zope.app.publisher.browser.viewmeta.Contents object at
 0x7f0b7de06990,
'views': zope.app.pagetemplate.viewpagetemplatefile.ViewMapper
 object at 0x7f0b7de06a10}
   File
 /home/lgs/z3env25/eggs/tmpXUllta/zope.tales-3.4.0-py2.5.egg/zope/tales/expressions.py,
  line 217, in __call__
   File
 /home/lgs/z3env25/eggs/tmpXUllta/zope.tales-3.4.0-py2.5.egg/zope/tales/expressions.py,
  line 211, in _eval
   File
 /home/lgs/z3env25/eggs/tmp8cmA1c/zope.app.container-3.6.0-py2.5-linux-x86_64.egg/zope/app/container/browser/contents.py,
  line 97, in listContentInfo
   File
 /home/lgs/z3env25/eggs/tmp8cmA1c/zope.app.container-3.6.0-py2.5-linux-x86_64.egg/zope/app/container/browser/contents.py,
  line 123, in _normalListContentsInfo
 MemoryError
 
 
 Steps to reproduce this problem:

Re: [Zope-dev] Re: Zope 3 on Python 2.5, Zope 3 releases

2008-07-13 Thread Lorenzo Gil Sánchez 
El dom, 13-07-2008 a las 09:35 -0400, Tres Seaver escribió:
 -BEGIN PGP SIGNED MESSAGE-
  
  
  Steps to reproduce this problem:
  
  virtualenv --no-site-packages z3env25
  cd z3env25
  . bin/activate
  easy_install zopeproject
  zopeproject HelloWorld
  cd HelloWorld
  bin/paster serve deploy.ini
  
  
  I tried to go further and discover the source of this problem adding a
  breakpoint just before the exception is raised. This is what I got:
  
  (Pdb) self.context
  zope.app.folder.folder.Folder object at 0x7faf532e4320
  (Pdb) self.context.keys()
  OOBTreeItems object at 0x7faf52682030
  (Pdb) tuple(self.context.keys())
  *** MemoryError: 
  (Pdb) self.context.values()
  OOBTreeItems object at 0x7faf52682130
  (Pdb) tuple(self.context.values())
  *** MemoryError: 
  
  So, it may be a ZODB issue.
 
 Your container has too many items in it:  the 'keys', 'items', and
 'values' methods of the BTree classes all return generators for exactly
 this reason.


As I described in the steps to reproduce the problem, this happens in an
**empty** ZODB with no items in the root container. The url that was
published when the memory error was raised was http://127.0.0.1:8080/

Lorenzo

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