gmane.comp.lang.jython.user

How best to deal with a bunch of .jar files?

David Niergarth — 2008-12-03T17:31:36

Hello, I need some basic help understanding how best to manage Jython scripts that need access to lots of jar files (CLASSPATH, sys.path, registry). I'm using Debian Lenny with Jython 2.2.1 on java1.6.0_0 (installed as the standard packages). I'm using Jython to script Jasper Reports (an open-source Java reporting library), which has a lot of dependencies (it's /lib subdirectory contains 45 jar files). To get things working, I have added the full paths to all 45 jar files to my CLASSPATH environment variable (2,690 characters). It also works if I add the jar paths to the registry's python.path property and unset CLASSPATH (or jython -Dpython.path=/long/path1:/long/path2:..., although that's pretty unwieldy). My questions are: 1. Is there a less-verbose way to load so many jars? (Like a way to point to just the directory containing the jars?) 2. I had a lot of problems and confusion that went away once I started clearing out cachedir before running my scripts. For example, my CLASSPATH went subtly wrong at one point and fixing it didn't seem to help until I cleared the cachedir. What is the cachedir doing? In case it helps clarify what I'm doing, here's a brief example script: import glob from java.util import HashMap from java.io import File from net.sf.jasperreports.engine import JasperFillManager from net.sf.jasperreports.engine.data import JRXmlDataSource reports = glob.glob('*.jasper') for report in reports: f = File('report_description.xml') xmlDataSource = JRXmlDataSource(f) JasperFillManager.fillReportToFile(report, HashMap(), xmlDataSource) Thanks, --David ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/

re cursive submodule imports

pratibha chitipothu — 2008-12-03T12:54:48

I am facing a problem with recursive submodule imports. Here is my python script directory structure script: __init__.py A: __init__.py B: __init__.py content of the __init__.py in module B is def test(): print 'hahahaha' if i do this in jython 2.2 import script script.A.B.test() it is working fine and printing 'hahahaha'. But the same thing in 2.5 is giving this error. Traceback (most recent call last): File "", line 1, in AttributeError: 'module' object has no attribute 'A' if i add explicit imports for A and B then it is working fine... Can someone helps me to solve this??? How can i enable automatic submodule imports like what is happening in jython2.2 Thanks in advance, Pratibha.

Global global variables

Scott, Gregory — 2008-12-02T15:28:45

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jythono code completion?

jlist — 2008-12-01T17:59:37

Eclipse code-completion works wonderfully for Java. I wonder if it supports code-completion of Java classes in Jython? Or, is there some other editors that support this? I have been using a Python editor for my Jython work and it knows nothing about the Java classes... ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/

using telnetlib and its expect method in jython

ShamanMahmoudi — 2008-12-01T12:59:55

Hi, I am using the latest stable version of jython, version 2.2.1 and I am trying to write a simple telnet program. However, I am having an issue with the expect method in it. Here is my code: import telnetlib HOST = 'localhost' user = 'someone' password = 'someones password' tn = telnetlib.Telnet(HOST, 22) aa, bb, cc = tn.expect(['>>>'], 1) print aa print bb print cc And this is the error message: Traceback (innermost last): File "/home/qm/workspace/project000/telnettest.py", line 11, in ? File "/home/qm/jython/Lib/telnetlib.py", line 623, in expect File "/home/qm/jython/Lib/select.py", line 204, in cpython_compatible_select File "/home/qm/jython/Lib/select.py", line 54, in _getselectable TypeError: ("Object 'java.nio.channels.SocketChannel[connected local=/127.0.0.1:45293 remote=/127.0.0.1:22]' is not watchable", 88) What am I supposed to do? Keep in mind that it works fine in Cpython and also if I replace expect method with read_until method. But, expect is important for me because there are multiple matches that I want to do, and I do not know the order in advance. Thanks in advance! /edit With further investigation, I have found out that if I leave out the timeout argument, and run it will work. But as soon as I set the timeout, I get this error. Any hints on what to do? I mean this method must have been tested thoroughly before right?

SciPy with Jython

indian scorpio — 2008-12-01T09:11:40

Hi Has sciPy been ported to jython or is there a way to use Scipy in Java. If yes can anyone provide with a link of an example or anything for that... i.e demonstrating how to use it. Couldn't really find any... TIA ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/

Raymundo Baquirin has invited you to join Friendster

Raymundo Baquirin — 2008-12-01T02:23:19

Embed Jython into Eclipse Plugin - javaos not found

Paul Gibbons — 2008-11-30T21:35:47

Syntax errors

David Bush — 2008-11-30T00:23:04

Jython Monthly - Issue #24 - November 28, 2008

Josh Juneau — 2008-11-29T03:11:09

============================================ Jython Monthly - Issue #24 - November 28, 2008 URL: http://wiki.python.org/jython/JythonMonthly/Newsletters/November2008 Please send articles and news to: juneau001< at >gmail.com ============================================ Please read the complete newsletter by visiting the URL above. Happy Thanksgiving to the community. Stay tuned for the new Jython Monthly podcast which should begin next month if all goes as planned. I will post details to the list. Sorry for the late distribution this month, the family and work have been keeping me busy! Best, Josh Juneau Summary of November 2008 Contents: News ==== Jython 2.5 b0 Released http://www.jython.org Netbeans 6.5 Released http://www.netbeans.org nbPython Releases EA http://download.netbeans.org/netbeans/6.5/python/ea/ Jythonroid http://code.google.com/p/jythonroid/ Articles ====== Comparison of Python Virtual Machines In this article I'm going to go through some details about what is going on under the hood when you run a Python program, as well how those details have changed over the years in different python's implementations ranging from original CPython (Python implementation in C) all the way to the newest implementations like PyPy. Read More - http://polishlinux.org/apps/cli/comparison-of-python-virtual-machines/ Jython Web Start application - step-by-step guide Alfonso Reyes Create Java Web Start applications with Jython and OSP. http://reyesaguayo.com/osp/ Blogs ==== DB4O with Jython - Jim Cassidy Jython Formula One Tutorial - Jim Cassidy Updated Jython Roadmap - Frank Wierzbicki Jython 2.5 Beta 0 Released - Frank Wierzbicki Tor Norbye Finds Bug in Jython Lib in Netbeans - Frank Wierzbicki Python Processing Proof-of-Concept - Jon Schull Jython + Processing = Fun - Jon Schull Techniques for Stubbing out Dependencies when Unit Testing Java Code - Clint Miller Jython Runs Successfully in Android Emulator - Fred Lin Python in Netbeans - Ted Leung How to Install and Use Jython to Write an ImageJ Plugin How to Run ByteFlow Engine on Jython Searching with Sonatype Nexus REST API: Python Tutorials ======= Netbeans Python Tutorial http://wiki.netbeans.org/NetBeansPythonTutorial Presentations =========== Scripting Languages on Glassfish V3 Prelude Movies ===== Jython on Joint Strike Fighter http://www.youtube.com/watch?v=zgE55z_RNgQ IDE === Pydev 1.3.24 Released http://pydev.sourceforge.net/ Netbeans http://www.netbeans.org ============================================ View the Newsletter: http://wiki.python.org/jython/JythonMonthly/Newsletters/November2008 Join the jython-users mailing list (jython-users< at >lists.sourceforge.net) to subscribe. ============================================= This issue of Jython Monthly was distributed by Josh Juneau. Email: juneau001< at >gmail.com Blog: http://jj-blogger.blogspot.com http://www.gathereventplanning.com ============================================= ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/

string to method call

2008-11-28T10:45:38

Serialization

aditsu — 2008-11-27T13:35:03

Hi, I'm having problems with serialization of instances of jython classes that extend java classes. After a long and bloody battle, I got a working example: import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.ObjectOutputStream; import org.python.core.PyModule; import org.python.core.PyObject; import org.python.core.imp; import org.python.util.PythonInterpreter; import org.python.util.PythonObjectInputStream; public class JTest { private static final PythonInterpreter interp = new PythonInterpreter(); public static void test() throws IOException, ClassNotFoundException { final PyObject x = interp.get("x"); System.out.println(x); final ByteArrayOutputStream os = new ByteArrayOutputStream(); new ObjectOutputStream(os).writeObject(x); final ByteArrayInputStream is = new ByteArrayInputStream(os.toByteArray()); final PyObject y = (PyObject) new PythonObjectInputStream(is).readObject(); System.out.println(y); } public static void main(final String... args) throws IOException, ClassNotFoundException { // without this, it fails final PyModule mod = imp.addModule("__main__"); interp.setLocals(mod.__dict__); interp.exec("from java.lang import Object"); interp.exec("from java.io import Serializable"); interp.exec("class Test(Serializable):\n\tdef __init__(self):\n\t\tObject.__init__(self)\n"); interp.exec("x = Test()"); // this works interp.exec("import JTest"); interp.exec("JTest.test()"); // this fails //test(); } } However: - it looks like deserialization only works when done through the interpreter - in the actual project I'm working on, the module it's trying to load (and fails miserably) is not "__main__" but something like "memory:0xd" (the number changes every time) How can I solve these problems? I'm using jython 2.5b0 Thanks Adrian

java to jython problem

Sim Zacks — 2008-11-27T09:52:49

I am trying to convert a script from java to jython and I am having a problem. I was hoping someone could help me. I actually wrote the script first in jython and then when it didn't work, wrote it in java so I could use the examples that were provided. The script now works in java but won't work in jython. Both scripts are pasted at the bottom of the email. Everything that is in the sys.path.append in the jython script is in the -classpath parameter when running the java script. I'm getting the error on the line that reads: res=manager.createDirectly(repfile,JFreeReport) In the java script, the parameter passed in is JFreeReport.class I have tried creating an instance of JFreeReport and passing it in it's class object x=JfreeReport() res=manager.createDirectly(repfile,x.class) with the same error. The error I'm getting is: Traceback (most recent call last): File "jython_jfree.jy", line 44, in ? res=manager.createDirectly(repfile,JFreeReport) org.jfree.resourceloader.ResourceKeyCreationException: org.jfree.resourceloader.ResourceKeyCreationException: Unable to create key: No loader was able to handle the given key data: file:/tmp/testporeport.xml One thing that I found odd is I'm getting the same error whether the file exists or not. Any thoughts? Sim JAVA _______________________________________________________________________ import org.jfree.resourceloader.ResourceManager; import org.jfree.resourceloader.Resource; import org.jfree.report.JFreeReport; import org.jfree.report.JFreeReportBoot; import org.jfree.report.modules.output.pageable.pdf.PdfReportUtil; import org.jfree.report.modules.parser.base.ReportGenerator; import java.net.URL; import java.net.MalformedURLException; import org.jfree.resourceloader.ResourceLoadingException; import org.jfree.resourceloader.ResourceException; import org.jfree.resourceloader.ResourceCreationException; public class testreport{ public static void main(String[] args){ JFreeReportBoot.getInstance().start(); System.out.println("Booted"); String REPORT="file:///tmp/testporeport.xml"; try { URL repfile= new URL(REPORT); ResourceManager manager= new ResourceManager(); System.out.println("Manager"); manager.registerDefaults(); System.out.println("Defaults"); Resource res=manager.createDirectly(repfile,JFreeReport.class); System.out.println("Created"); JFreeReport rep= (JFreeReport) res.getResource(); System.out.println("GotResource"); PdfReportUtil.createPDF(rep,"/tmp/testporeport.pdf"); System.out.println("PDF Created"); } catch(ResourceException e) {} catch(MalformedURLException mue) {} } } _____________________________________________________________________________ Jython _____________________________________________________________________________ #!/usr/bin/jython import sys, traceback #Add all the possible used jars to the classpath sys.path.append("bsf-2.4.0.jar") sys.path.append("bsh-1.3.0.jar") sys.path.append("itext-1.5.2.jar") sys.path.append("jcommon-1.0.14.jar") sys.path.append("jcommon-serializer-0.2.0.jar") sys.path.append("libfonts-0.3.4.jar") sys.path.append("libformula-0.1.18.2.jar") sys.path.append("libloader-0.3.7.jar") sys.path.append("librepository-0.1.6.jar") sys.path.append("libxml-0.9.11.jar") sys.path.append("pentaho-reporting-engine-classic-0.8.9.10.jar") sys.path.append("pixie-0.8.10.jar") sys.path.append("poi-3.0.1-jdk122-final-20071014.jar") sys.path.append("/usr/share/jdbc-postgresql/lib/jdbc-postgresql.jar") #import the classes that are actually used. from org.jfree.resourceloader import ResourceManager from org.jfree.resourceloader import Resource from org.jfree.report import JFreeReport from org.jfree.report import JFreeReportBoot from org.jfree.report.modules.output.pageable.pdf import PdfReportUtil from org.jfree.report.modules.parser.base import ReportGenerator from java.net import URL from java.net import MalformedURLException from org.jfree.resourceloader import ResourceLoadingException from org.jfree.resourceloader import ResourceCreationException #Run the report JFreeReportBoot.getInstance().start() print "Booted" REPORT="file:///tmp/testporeport.xml" try: repfile=URL(REPORT) manager=ResourceManager() print "Manager" manager.registerDefaults() print "Defaults" res=manager.createDirectly(repfile,JFreeReport) print "Created" rep=res.getResource() print "Got Resource" PdfReportUtil.createPdf(rep,"/tmp/testporeport1.pdf") print "PDF Created" except: traceback.print_exc(file=sys.stdout) ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/

Join me on Bebo

Aljosa Mohorovic — 2008-11-26T22:18:18

You will like it. Click to find out why Please accept or reject this invitation by clicking below: http://www.bebo.com/in/8208212033a722300041b135 ...................................................................... This email was sent to you at the direct request of Aljosa Mohorovic gmail.com>. You have not been added to a mailing list. If you would prefer not to receive invitations from ANY Bebo members please click here - http://www.bebo.com/unsub/8208212033a722300041 Bebo, Inc., 795 Folsom St, 6th Floor, San Francisco, CA 94107, USA. ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/

Jython 2.5b0 start script problems

Mayne, Peter — 2008-11-25T05:31:57

JNI with 2.5b0

Mayne, Peter — 2008-11-25T04:55:29

sys.path

josu jugo — 2008-11-24T17:29:31

Hi I am always with the same problem. Why sometimes the .jar files included in the sys.path are added (for example in the normal console) and why in other situations no (for example in the interactive console of nbphyton)? Thanks josu ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/

Jython, 32bit works, 64bit fails

Adam Tauno Williams — 2008-11-24T15:30:01

I've got a Jython script that runs just fine on the 32-bit OS on my laptop. But on one of our virtual workstations (64-bit, 8GB RAM) it fails quickly with - adam< at >sandbox64:~> jython XrefrMinimize.jy Traceback (innermost last): File "XrefrMinimize.jy", line 35, in ? Error: Java heap space adam< at >sandbox64:~> Eh??? Does this make sense to anyone? ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Jython-users mailing list Jython-users< at >lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jython-users

Java class methods do not Auto Complete in Jythonwhile using Eclipse and PyDev

2008-11-24T14:05:24

Problem importing Java packages

Stefan Behnel — 2008-11-20T16:45:42

Hi, I have a problem with the current Jython trunk. When I try to import a Java package, I get an ImportError for the first sub-package: Jython 2.5b0+ (trunk:5590M, Nov 18 2008, 14:23:44) [Java HotSpot(TM) Server VM (Sun Microsystems Inc.)] on java1.6.0_03 Type "help", "copyright", "credits" or "license" for more information. >>> import javax.swing Traceback (most recent call last): File "", line 1, in ImportError: No module named swing >>> import org.xml.sax Traceback (most recent call last): File "", line 1, in ImportError: No module named xml This happens both on the console and in module code. Can I fix this somehow? Thanks, Stefan ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/

Using Jython from Java

2008-11-20T09:32:14