gmane.comp.lang.jython.devel

Summary of Jython tracker Issues

Jython tracker — 2008-11-28T17:10:08

------------------------------------------------------------------------- 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-dev mailing list Jython-dev< at >lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jython-dev

List set slice fix,and CollectionProxy behavior (Issue 1148)

Geoffrey French — 2008-11-22T09:59:00

Summary of Jython tracker Issues

Jython tracker — 2008-11-21T17:10:08

MySQL backend for django-jython project

Pavel Vinogradov — 2008-11-19T14:40:39

Hello. I'm working on porting one of python django-based blog engine to Jython. To finish my work i need working MySQL database backend. Currently i use postgresql backend from django-jython project and it runs good for me. django-jython don't provide MySQL backend, but have wiki documentation for anybody who want to write it. Does anybody work on this now? It seems not so complex task because most code maybe reused from postgresql backend. I suppose that some MySQL specific issues may arise. If anybody else work on this i can do this myself and send patch to django-jython project.

float_hash()

David Morley — 2008-11-15T06:18:15

If you have a float that equals an integer, but cannot be represented in 32 bits, then float___hash__() converts this number, intPart, to a PyLong/java.math.BigInteger and uses java.math.BigInteger.intValue() to extract the last 32 bits. Even though floats are rarely hashed, this seems like a lot of effort. What about something simpler, like using the modulus operator to reduce the intPart to a smaller number that has the same last 32 bits, coercing that to a long, and then coercing that to an int. Coercing to an int directly doesn't work, as coercion of large magnitude floats to ints leads to MAX_VALUE or MIN_VALUE. This seems to give the same results for quite a few boundary cases: >>> from java.lang import Float, Integer, Long >>> def check(x): print hash(float(x)), Long.intValue(Float.longValue(float(x)%(2.0**32))) ... >>> check(Integer.MIN_VALUE - 1) 2147483647 2147483647 >>> check(Integer.MIN_VALUE) -2147483648 -2147483648 >>> check(Integer.MAX_VALUE) 2147483647 2147483647 >>

Summary of Jython tracker Issues

Jython tracker — 2008-11-14T17:10:10

Changes to PyFile interface

Frank Wierzbicki — 2008-11-12T18:20:27

Hi all, modjy is having trouble with PyFile -- see http://bugs.jython.org/issue1171. I remember Charlie (and maybe Leo?) had done some work with PyFile, and at some point modified it so that you can no longer do PyFile(inputStream) directly from Jython code. If I remember correctly, this was because a PyFile that gets an inputStream needs to know the encoding of the stream in order to work, so that the recommended approach is to replace code like: from java.io import FileInputStream from org.python.core import PyFile fis = FileInputStream("error.txt") pyf = FileUtil.wrap(fis) with code like: from java.io import FileInputStream from org.python.core.util import FileUtil fis = FileInputStream("error.txt") pyf = FileUtil.wrap(fis) We should definitely work up a document that describes all of the backwards incompatibilities that our new treatment of encodings is going to produce. I've started a wiki page with the above at http://wiki.python.org/jython/Jython25BackwardsIncompatibilities. Am I correct abo

Bug when opening a PyFile from a java.io.InputStream.

Alan Kennedy — 2008-11-12T17:21:35

Folks, I've had reports from two modjy users about a bug when using it with jython 2.5b0. Creating a PyFile from an InputStream is broken. http://bugs.jython.org/issue1171 The bug is very easy to reproduce # filebug.py -=-=-=-=-=-=-=-=-=-=-= from java.io import FileInputStream from org.python.core import PyFile fis = FileInputStream("error.txt") pyf = PyFile(fis) #-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Which outputs Traceback (most recent call last): File "filebug.py", line 7, in pyf = PyFile(fis) TypeError: coercing to Unicode: need string, 'javainstance' type found Until this bug is fixed, I'll have to recommend to people not to use jython 2.5b0, for modjy at least. If I get the time, I'll try to investigate the cause. Regards, Alan. ------------------------------------------------------------------------- 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

Summary of Jython tracker Issues

Jython tracker — 2008-11-07T17:10:08

xml.etree.ElementTree?

Stefan Behnel — 2008-11-07T13:42:38

Hi jython-dev, I noticed that xml.etree.ElementTree is still not shipped with Jython 2.5beta. Doesn't this fill the need? http://code.google.com/p/jython-elementtree/ Here's the expat replacement that it uses (which also lacks from Jython): http://code.google.com/p/jython-elementtree/source/browse/trunk/xml/parsers/expat.py BTW, the site above advocates ET 1.3, although Jython 2.5 should probably ship with the stock Py2.5 xml.etree package. 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=/

differences in ast parser in python2.6 and jython

Ondrej Certik — 2008-11-07T00:48:08

Hi, so I rewrote our parsing module in sympy from the "parser" module to "ast" and currently only test it with python2.6. All tests pass. Here is my branch: http://github.com/certik/sympy/tree/ast However, if you do: $ cat q.py import sympy sympy.test("sympy/core") $ jython q.py ============================= test process starts ============================== py.test like reporting. sympy/core/tests/test_arit.py[41] ...ff.................................... sympy/core/tests/test_assumptions.py[27] ..f........................ sympy/core/tests/test_basic.py[38] .............................E......E. sympy/core/tests/test_complex.py[10] .......... sympy/core/tests/test_count_ops.py[1] . sympy/core/tests/test_diff.py[4] .... sympy/core/tests/test_equal.py[4] .... sympy/core/tests/test_eval.py[8] ...f.... sympy/core/tests/test_eval_power.py[8] ........ sympy/core/tests/test_evalf.py[19] .E.E.EE..EEE.E..... sympy/core/tests/test_facts.py[11] ........... sympy/core/tests/test_functions.py[25] ....ff............

jython applet with python console

Ondrej Certik — 2008-11-03T13:31:47

Hi, what is necessary to do in order to get a python console inside a jython applet? Last time I tried to use eval/exec in applets couple years ago, I think I had to setup some java permissions, or something. I'd be curious to get sympy working inside an applet, but for that we need the console. The other approach is to run it on the server, here is an example how it looks like on the google app engine: http://live.sympy.org/ But the disadvantage is that it has 10s limit for all calculations, then Google kills the process. Ondrej ------------------------------------------------------------------------- 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=/

binop corner case/incompatibility with CPython

Ondrej Certik — 2008-11-03T13:25:41

Hi, Philip described the incompatibility here: https://codespeak.net/issue/pypy-dev/issue412 and provided a fix in there. Should we wait for more comments, or merge it with jython? I verified it fixes the problem with sympy. Or is that something that we should rather fix in sympy? Ondrej ------------------------------------------------------------------------- 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 2.5 Beta0 Released!

Frank Wierzbicki — 2008-10-31T21:39:31

Happy Halloween! On behalf of the Jython development team, I'm pleased to announce that Jython 2.5b0 is available for download at http://downloads.sourceforge.net/jython/jython_installer-2.5b0.jar. See the installation instructions at http://jython.org/Project/installation.html. Jython 2.5 Beta0 is the beginning of a code cooling period where the number of new features should significantly slow as we concentrate on solidifying Jython 2.5 for an eventual release. There are still a number of features that we will squeeze in (like jythonc). This is a beta release so be careful. -Frank ------------------------------------------------------------------------- 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=/

Summary of Jython tracker Issues

Jython tracker — 2008-10-31T17:10:08

Jython Beta [was: Packaging modjy with jython]

Frank Wierzbicki — 2008-10-30T15:12:15

BTW -- I want to put together the beta during the day tomorrow (Friday October 31) -- since I did say I'd put it out in October, that would be my last chance :) This will signal a feature cooling -- most new features that come in after the beta should be things we've already discussed or really important fixes. Some examples: jythonc and improved java integration help() system ctypes bz2 elementree Of course this would also include bugs and unit testing fixes. I'm sure there are plenty more that can make it past this cooling -- but only if they get going pretty soon. I really really want to get this thing solid and out no later than January. -Frank ------------------------------------------------------------------------- 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&

Packaging modjy with jython.

Alan Kennedy — 2008-10-30T14:49:32

Hi all, In discussions off list, Frank, Jim, Leo and I have agreed that modjy (the Servlet->WSGI) gateway will be included with jython distributions from now on. For a number of reasons, modjy will be simply be included as an external package for the moment. We can review this later when we figure out the best way to integrate the modjy documentation and unit tests into the jython code base. So, for the moment, I propose to simply check a version of modjy.zip into the "extlibs" directory, i.e. https://jython.svn.sourceforge.net/svnroot/jython/trunk/jython/extlibs And make the relevant modifications to build.xml so that it gets packaged with the distribution. The modjy.zip will contain exactly what the current download contains, i.e. the jar file, all java and jython source, and all the documentation. http://www.xhaus.com/modjy/download.html I'm just checking with the list to ensure that this is an agreeable approach? Leo and Jim; I'm particularly interested if this fits in with Django requirements?

Summary of Jython tracker Issues

Jython tracker — 2008-10-24T16:10:26

Summary of Jython tracker Issues

Jython tracker — 2008-10-17T16:10:07

NPE on PythonInterpreter.eval()

Marc Downie — 2008-10-16T06:04:50

Hello, Just upgraded a large Jython-based project from the first 2.5 alpha to 2.5 alpha 3 and a large chunk of it stopped working immediately. As far as I can tell PythonInterpreter.eval() is broken. Stripping it right down to the barest bones: package com.openendedgroup.temp; import org.python.util.PythonInterpreter; public class T_EvalBroken { static public void main(String[] a) { PythonInterpreter interpreter = new PythonInterpreter(); interpreter.exec("x = 5"); # this is here to make a valid example interpreter.eval("x"); # but any string to eval will do } } $ java -cp .:/Users/marc/fieldwork/field/development/depends/jython2.5a3/jython-complete.jar com.openendedgroup.temp.T_EvalBroken *sys-package-mgr*: can't create package cache dir, '/Users/marc/fieldwork/field/development/depends/jython2.5a3/jython-complete.jar/cachedir/packages' Exception in thread "main" java.lang.NullPointerException at org.python.core.Py.compile_flags(Py.java:1700) at org.python.

Summary of Jython tracker Issues

Jython tracker — 2008-10-10T16:10:08