You can get some more details on that error if you supply a logger to the
NeoService:
import logging
logger = logging.getLogger('neo')
logger.setLevel(logging.DEBUG)
logger.addHandler(logging.StreamHandler())
neo = NeoService("foo", log=logger, ...) # replace '...' with the rest of
your arguments
If you could give me the full output of that that would be great.
Thanks,
Tobias
On Mon, Aug 3, 2009 at 9:39 AM, Karan Bhangui <karan.bhan...@gmail.com>wrote:
> Hey Tobias,
>
> I finally got it working (reinstalled the neo4j.py library with a
> fresh python2.5 install). What I'm having trouble with now is running
> the sample application. I've tried several combos of this:
>
> neo = NeoService("foo", classpath=["neo-1.0-b8.jar", "jta-1_1.jar"])
> with neo.transaction:
> ref_node = neo.reference_node
> new_node = neo.node()
> # put operations that manipulate the node space here ...
> neo.shutdown()
>
> I've also tried a version where I supplied the jvm path as /usr/lib/
> jvm/java-6-openjdk/jre/lib/amd64/server/libjvm.so
>
> However, every time I try to run it, i get:
>
> Traceback (most recent call last):
> File "neotest.py", line 4, in <module>
> neo = NeoService("foo", classpath=["neo-1.0-b8.jar",
> "jta-1_1.jar"])
> File "/usr/lib/python2.5/site-packages/Neo4j.py-0.1_SNAPSHOT-
> py2.5.egg/neo4j/__init__.py", line 459, in __new__
> neo = core.load_neo(resource_uri, params)
> File "/usr/lib/python2.5/site-packages/Neo4j.py-0.1_SNAPSHOT-
> py2.5.egg/neo4j/_core.py", line 56, in load_neo
> backend.initialize(**parameters)
> File "/usr/lib/python2.5/site-packages/Neo4j.py-0.1_SNAPSHOT-
> py2.5.egg/neo4j/_backend/__init__.py", line 52, in initialize
> raise ImportError("No applicable backend found.")
> ImportError: No applicable backend found.
>
>
> I've been trying to get help in #python on freenode for the past few
> hours but to no avail. I'm fairly frustrated and decided to write a
> jar and just access it from python's subprocess module, but if you
> know what's wrong I would appreciate it. I'd love to get this working
> with pure cpython and not try any hacks.
>
> Thanks,
>
> Karan
>
>
> On 3-Aug-09, at 12:36 AM, Tobias Ivarsson wrote:
>
> > Hi Karan,
> >
> > ´from neo4j import NeoService´ is supposed to work, and works with the
> > setups I have available. Could you please provide some details about
> > which
> > version of CPython you are using and a stack trace for that
> > ImportError so
> > that I can try and debug this issue.
> >
> > Cheers,
> > Tobias
> >
> > On Mon, Aug 3, 2009 at 6:47 AM, Karan Bhangui
> > <karan.bhan...@gmail.com>wrote:
> >
> >> Hey guys, I'm trying to work with neo4j using python (neo4j.py module
> >> for CPython). I've installed JPype as a dependency and am able to
> >> import the `neo4j` module in python. However, when I try from neo4j
> >> import NeoService, i get an ImportError. Does anyone know why?
> >>
> >> Thanks a ton,
> >>
> >> Karan
> >> _______________________________________________
> >> Neo mailing list
> >> User@lists.neo4j.org
> >> https://lists.neo4j.org/mailman/listinfo/user
> >>
> >
> >
> >
> > --
> > Tobias Ivarsson <tobias.ivars...@neotechnology.com>
> > Hacker, Neo Technology
> > www.neotechnology.com
> > Cellphone: +46 706 534857
> > _______________________________________________
> > Neo mailing list
> > User@lists.neo4j.org
> > https://lists.neo4j.org/mailman/listinfo/user
>
> _______________________________________________
> Neo mailing list
> User@lists.neo4j.org
> https://lists.neo4j.org/mailman/listinfo/user
>
--
Tobias Ivarsson <tobias.ivars...@neotechnology.com>
Hacker, Neo Technology
www.neotechnology.com
Cellphone: +46 706 534857
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