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List:       kde-bindings
Subject:    [Kde-bindings] Python DataEngine problem
From:       Luca Beltrame <einar () heavensinferno ! net>
Date:       2008-12-28 15:12:47
Message-ID: 200812281612.54095.einar () heavensinferno ! net
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Hello,

I've been starting to play with Plasma and Python (KDE 4.2 beta 2), and I've 
been trying to create a simple DataEngine. I wonder if these should be 
installed as packages, with plasmapkg, or with something else, because I can't 
seem to get them to work in the engine explorer. 

I always get these errors:

Traceback (most recent call last):                                                    \
  File "/usr/share/kde4/apps/plasma_scriptengine_python/pydataengine.py", line 
43, in init                                                                       
    self.module = __import__(self.plugin_name+'.main')                                \
                
ImportError: No module named main                                                     \
 Traceback (most recent call last):                                                   \
  File "/usr/share/kde4/apps/plasma_scriptengine_python/pydataengine.py", line 
58, in sources                                                                    
    return self.pydataengine.sources()                                                \
                
AttributeError: pydataengine                                                          \
 Traceback (most recent call last):                                                   \
  File "/usr/share/kde4/apps/plasma_scriptengine_python/pydataengine.py", line 
64, in sourceRequestEvent                                                         
    return self.pydataengine.sourceRequestEvent(name)                                 \
                
AttributeError: pydataengine

My main.py and metadata.desktop files are attached, but it must be noted that 
this happens also with the sample DataEngine code present in SVN 
(plasma_dataengine_pytime; exactly the same error).

Is there anything I'm doing wrong, or is there a bug?

I apologize in advance if the quality of the code is rather crude, I was just 
trying an experiment.

Thanks!

P.S.: Please CC me in replies, I'm not subscribed.


["main.py" (text/x-python)]

#!/usr/bin/env python


from PyQt4.QtCore import *
from PyKDE4.kdecore import *
from PyKDE4 import plasmascript
from Bio import Entrez # querying functions

class PyEUtilsEngine(plasmascript.DataEngine):

    def __init__(self, parent, args=None):
        plasmascript.DataEngine.__init__(self, parent)

    def init():

        Entrez.email = "testa_testa@graffiti.net"
        self.setMinimumPollingInterval(3000) # To comply with NCBI regulations

    def sources(self):

        sources = ["NCBI"]
        return sources

    def sourceRequestEvent(self, name):
        return updateSourceEvent(name)

    def updateSourceEvent(self, gene):

        handle = Entrez.esearch(name, db="gene")
        data = Entrez.read(handle)
        idlist = data["IdList"]

        self.setData("Genes",QVariant(idlist))

        return True

def CreateDataEngine(parent):
    return PyEutilsEngine(parent)



["metadata.desktop" (application/x-desktop)]
["signature.asc" (application/pgp-signature)]

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