[Rivet] rivet and GENSER

[Anton Karneyeu]

Hi Hendrik,
no problem to wait for Rivet 1.2.0, anyway now I am playing with local 
installation of Rivet.

I take a look on http://svn.hepforge.org/rivet/trunk/bin/ .
As I see you use xml.etree.cElementTree or xml.etree.ElementTree 
modules. Unfortunately these are available only from Python 2.5 (see 
http://docs.python.org/library/xml.etree.elementtree.html ).

SLC4 has Python 2.3.4, SLC5 has 2.4.3:

$ ssh lxplus
$ python
Python 2.3.4 (#1, Jul 30 2008, 01:34:10)
[GCC 3.4.6 20060404 (Red Hat 3.4.6-9)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
 >>> import xml.etree.cElementTree
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
ImportError: No module named etree.cElementTree
 >>> import xml.etree.ElementTree
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
ImportError: No module named etree.ElementTree
 >>>


So, the only way to use new Rivet 1.2.0 "from the box" on SLC, which I 
see, is to change xml parser to xml.dom or xml.sax . Do you think this 
is possible?

Anton


Hendrik Hoeth:
> Hi Anton,
>
> Thus spake Anton Karneyeu (Anton.Karneyeu at cern.ch):
>
>> I am going to integrate Rivet to GENSER tests system, and I found two
>> problems:
>>
>> * current installation of Rivet and AGILe at
>>
>>       /afs/cern.ch/sw/lcg/external/MCGenerators/
>>
>>     doesn't have necessary python scripts to run agile and rivet.
>>     This is due to configure option --disable-pyext , which was used
>> during installation.
>
> Sounds like a failure during the installation.
>
>> That is why I want to reinstall this tools. Can you
>> comment - will it be save for current user of rivet/agile?
>
> It should be. But I think you should simply wait a few days. We are
> about to release Rivet 1.2.0 next week, which is a _major_ improvement
> over 1.1.3.
>
>> * second problem related with old version of python 2.3/2.4 on
>> slc4/slc5, which does not allow to direct use of several rivet python
>> scripts (make-plots, aida2root, aida2flat) due to use of module
>> xml.etree.ElementTree (which is available starting from python 2.5 only).
>
> This has long been fixed in the Rivet development version and the fix
> will be in the 1.2.0 release. So if you can wait until next week ...
>
>> May be you can propose another solutions?
>
> Have a look at the version in http://svn.hepforge.org/rivet/trunk/bin/
> We are now using cElementTree if xml.etree.cElementTree is not
> available. This works fine with the older Python versions on SL4/SL5.
>
> Cheers,
>
>       Hendrik