jython-users — Discussion of and questions about using Jython

Re: [Jython-users] A scientific computation and visualization environment using Jython and Java

[Claude F. <cl...@br...>]

Dear Yaqiang, 

This is great news to see the Jython language entering into to the array 
computing space with open packages like JyNI, as well as the Meteoinfo 
software. I certainly will give it a trial and share the experience. 

I just checked the documentation of the Tensorflow API package which could 
also work as a transfer mechanism between the Java and Python spaces. Yet 
another Java package which compares to Python Numpy is the ND4J [ 
http://nd4j.org/ ]. 

The Meteoinfo package site looks great [ http://www.meteothinker.com/ ]. 
Congratulation. 

Regards, 
Claude 


Claude Falbriard 
Certified IT Specialist L2 - Middleware
GBS Hortolândia / SP - Brazil
mobile:    +55 13 9  8117 3316
e-mail:    cl...@br...




From:   Yaqiang Wang <yaq...@gm...>
To:     jython-users <jyt...@li...>, jython-dev 
<jyt...@li...>
Date:   08/30/2017 03:09 AM
Subject:        [Jython-users] A scientific computation and visualization 
environment using Jython and Java



One of the deal ends of Jython is no multi-dimensional array computing 
library like Numpy of CPython. JyNI is a good solution to support Numpy 
from Jython. Another way is to develop Numpy like functions using Java and 
Jython. I am working on a software of MeteoInfo which has now fulfilled 
many functions of Numpy, Matplotlib and Basemap only use Jython and Java. 
MeteoInfo is free and open source under LGPL license (
http://www.meteothinker.com/). Welcome to use and develop it.

Regards
Yaqiang

*************************************************
Dr. Yaqiang Wang
Chinese Academy of Meteorological Sciences (CAMS)
46, Zhong-Guan-Cun South Avenue
Beijing, 100081
China
　　　　　　　　　　　　　
yaq...@gm...

http://www.meteothinker.com
https://www.researchgate.net/profile/Yaqiang_Wang5
**************************************************
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Re: [Jython-users] A scientific computation and visualization environment using Jython and Java

[Curtis R. <ctr...@wi...>]

Hi Yaqiang,

> Another way is to develop Numpy like functions using Java and Jython.

A powerful N-dimensional array computing library written in Java is ImgLib2
[1]. It is the core image processing library of ImageJ [2], which
integrates with Jython as a scripting language [3]. The ImageJ application
provides a script editor in which Jython can be used, and ImageJ can be
invoked from Jython scripts via its API.

Regards,
Curtis

[1] http://imglib2.net/
[2] https://imagej.net/
[3] https://imagej.net/Jython

--
Curtis Rueden
LOCI software architect - https://loci.wisc.edu/software
ImageJ2 lead, Fiji maintainer - https://imagej.net/User:Rueden
Did you know ImageJ has a forum? http://forum.imagej.net/


On Wed, Aug 30, 2017 at 1:09 AM, Yaqiang Wang <yaq...@gm...>
wrote:

> One of the deal ends of Jython is no multi-dimensional array computing
> library like Numpy of CPython. JyNI is a good solution to support Numpy
> from Jython. Another way is to develop Numpy like functions using Java and
> Jython. I am working on a software of MeteoInfo which has now fulfilled
> many functions of Numpy, Matplotlib and Basemap only use Jython and Java.
> MeteoInfo is free and open source under LGPL license (
> http://www.meteothinker.com/). Welcome to use and develop it.
>
> Regards
> Yaqiang
> ------------------------------
> *************************************************
> Dr. Yaqiang Wang
> Chinese Academy of Meteorological Sciences (CAMS)
> 46, Zhong-Guan-Cun South Avenue
> Beijing, 100081
> China
>
> yaq...@gm...
>
> http://www.meteothinker.com
> *https://www.researchgate.net/profile/Yaqiang_Wang5
> <https://www.researchgate.net/profile/Yaqiang_Wang5>*
> **************************************************
>
> ------------------------------------------------------------
> ------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
>
> _______________________________________________
> Jython-users mailing list
> Jyt...@li...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>
>

[Jython-users] A scientific computation and visualization environment using Jython and Java

[Yaqiang W. <yaq...@gm...>]

 One of the deal ends of Jython is no multi-dimensional array computing
library like Numpy of CPython. JyNI is a good solution to support Numpy
from Jython. Another way is to develop Numpy like functions using Java and
Jython. I am working on a software of MeteoInfo which has now fulfilled
many functions of Numpy, Matplotlib and Basemap only use Jython and Java.
MeteoInfo is free and open source under LGPL license (
http://www.meteothinker.com/). Welcome to use and develop it.

Regards
Yaqiang
------------------------------
*************************************************
Dr. Yaqiang Wang
Chinese Academy of Meteorological Sciences (CAMS)
46, Zhong-Guan-Cun South Avenue
Beijing, 100081
China

yaq...@gm...

http://www.meteothinker.com
*https://www.researchgate.net/profile/Yaqiang_Wang5
<https://www.researchgate.net/profile/Yaqiang_Wang5>*
**************************************************

[Jython-users] PyDev 5.9.2 released

[Fabio Z. <fa...@gm...>]

PyDev 5.9.2 Release Highlights

   -

   *Important* PyDev now requires Java 8 and Eclipse 4.6 (Neon) onwards.
   - PyDev 5.2.0 is the last release supporting Eclipse 4.5 (Mars).
   -

   *Debugger*
   - Integrated speedups for Python 3.6 which use the new Python hook which
      allows the debugger to add breakpoints through bytecode manipulation.
      - Some critical fixes related to issues in the latest debugger
      (#PyDev-837, #PyDev-838, #PyDev-817).
   -

   Added support for having isort as the engine for import sorting.
   - Fixed issue on text search with *Lucene* when the user had another
   plugin which also used lucene (*#PyDev-826*).
   - From this version onwards, PyDev is built with a proper certificate
   (previous versions used a self-signed certificate).
   - Google App Engine templates now working out of the box (patch by *Mat
   Booth*).
   - Optimization in editor highlighting when dealing with huge files.
   - Some bugfixes in pytest integration.
   - *cv2* added to forced builtins by default for working with OpenCV.
   - Fixed issue when parsing empty f-string.

What is PyDev?

PyDev is an open-source Python IDE on top of Eclipse for Python, Jython and
IronPython development.

It comes with goodies such as code completion, syntax highlighting, syntax
analysis, code analysis, refactor, debug, interactive console, etc.

Details on PyDev: http://pydev.org
Details on its development: http://pydev.blogspot.com
What is LiClipse?

LiClipse is a PyDev standalone with goodies such as support for Multiple
cursors, theming, TextMate bundles and a number of other languages such as
Django Templates, Jinja2, Kivy Language, Mako Templates, Html, Javascript,
etc.

It's also a commercial counterpart which helps supporting the development
of PyDev.

Details on LiClipse: http://www.liclipse.com/

Cheers,

--
Fabio Zadrozny
------------------------------

Software Developer

LiClipse
http://www.liclipse.com

PyDev - Python Development Environment for Eclipse
http://pydev.org
http://pydev.blogspot.com

PyVmMonitor - Python Profiler
http://www.pyvmmonitor.com/

Re: [Jython-users] Version of python libraries inside Jython distribution

[Krzysiek P. <krz...@gm...>]

Hmmm - ok.

Thanks!
Krzysztof

2017-08-08 20:31 GMT+02:00 Jeff Allen <ja...@fa...>:

> There's no simple answer to that, I'm afraid. The libraries are not
> identical to those in any particular version of CPython. We have to modify
> some of them extensively.
>
> And it's a mixture that we use. The last time we imported the stdlib en
> masse was 2013 (2.7.4-ish). But we have made many selective additions from
> 2.7.11 and 2.7.13 (at least) since then.
>
> Jeff Allen
>
>
>
> On 08/08/2017 09:25, Krzysiek Płachno wrote:
>
>> Hey!
>>
>> In Jython jar package there's Lib folder with many python libraries -
>> *.py. Is it somewhere documented which versions of those libraries are
>> there? (There's no way to check it basing on file itself)
>>
>> Thanks in advance :)
>> Best,
>> Krzysztof
>>
>>
>> ------------------------------------------------------------
>> ------------------
>> Check out the vibrant tech community on one of the world's most
>> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
>>
>>
>> _______________________________________________
>> Jython-users mailing list
>> Jyt...@li...
>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>
>
>

Re: [Jython-users] Version of python libraries inside Jython distribution

[Jeff A. <ja...@fa...>]

There's no simple answer to that, I'm afraid. The libraries are not 
identical to those in any particular version of CPython. We have to 
modify some of them extensively.

And it's a mixture that we use. The last time we imported the stdlib en 
masse was 2013 (2.7.4-ish). But we have made many selective additions 
from 2.7.11 and 2.7.13 (at least) since then.

Jeff Allen


On 08/08/2017 09:25, Krzysiek Płachno wrote:
> Hey!
>
> In Jython jar package there's Lib folder with many python libraries - 
> *.py. Is it somewhere documented which versions of those libraries are 
> there? (There's no way to check it basing on file itself)
>
> Thanks in advance :)
> Best,
> Krzysztof
>
>
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
>
>
> _______________________________________________
> Jython-users mailing list
> Jyt...@li...
> https://lists.sourceforge.net/lists/listinfo/jython-users

[Jython-users] Version of python libraries inside Jython distribution

[Krzysiek P. <krz...@gm...>]

Hey!

In Jython jar package there's Lib folder with many python libraries - *.py.
Is it somewhere documented which versions of those libraries are there?
(There's no way to check it basing on file itself)

Thanks in advance :)
Best,
Krzysztof

Re: [Jython-users] jython,JyNI and numpy

[Stefan R. <Ste...@gm...>]

Lana, which NumPy version are you using? Only NumPy 1.12 or later are supported. Also note that Numpy support is not yet exhaustive. Many aspects don't work yet.

-Stefan 

> Gesendet: Freitag, 28. Juli 2017 um 16:27 Uhr
> Von: "Lana Abadie" <lan...@gm...>
> An: Jyt...@li...
> Betreff: [Jython-users] jython,JyNI and numpy
>
> Dear all
> I'm new to Jython. I read that now one shall be able to import numpy from
> Jython using JyNI.
> However in my case, the import failed as follows
> File "/usr/lib64/python2.6/site-packages/numpy/__init__.py", line 153, in
> <module>
>     from . import add_newdocs
>   File "/usr/lib64/python2.6/site-packages/numpy/add_newdocs.py", line 13,
> in <module>
>     from numpy.lib import add_newdoc
>   File "/usr/lib64/python2.6/site-packages/numpy/lib/__init__.py", line 8,
> in <module>
>     from .type_check import *
> ImportError: No module named type_check
> 
> 
> I'm using the eclipse plugin of jython (2-7) and the latest version of
> JyNI. I'm running it from linux RHEL 6.5
> thanks for your help
> Lana
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot_______________________________________________
> Jython-users mailing list
> Jyt...@li...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>

[Jython-users] jython,JyNI and numpy

[Lana A. <lan...@gm...>]

Dear all
I'm new to Jython. I read that now one shall be able to import numpy from
Jython using JyNI.
However in my case, the import failed as follows
File "/usr/lib64/python2.6/site-packages/numpy/__init__.py", line 153, in
<module>
    from . import add_newdocs
  File "/usr/lib64/python2.6/site-packages/numpy/add_newdocs.py", line 13,
in <module>
    from numpy.lib import add_newdoc
  File "/usr/lib64/python2.6/site-packages/numpy/lib/__init__.py", line 8,
in <module>
    from .type_check import *
ImportError: No module named type_check


I'm using the eclipse plugin of jython (2-7) and the latest version of
JyNI. I'm running it from linux RHEL 6.5
thanks for your help
Lana

[Jython-users] [FYI] Pypi Connector importing packages to Jython on XWiki platform - released

[Krzysiek P. <krz...@gm...>]

Hey!

Thanks again for you help and answers to my questions.
I've just released the extension for XWiki that I was working for.

XWiki has possibility to scirpt on its pages in Python. Under the hood it's
Java Scripting API and Jython that takes care of running this script and
returning result to page. Jython has implementation only for standard
libraries. That's why I created Extension Repository Connector - Pypi - to
be able to import to XWiki other (non-standard) python packages that are
hosted on pypi: https://pypi.python.org/pypi. All this on running XWiki
instance (without need to restart) - downloaded packages are simply made
available for Java classloader.

More about extension:
http://extensions.xwiki.org/xwiki/bin/view/Extension/Extension%20Repository%20Connector%20-%20Pypi/
about XWiki:
http://www.xwiki.org/


Best,
Krzysztof

Re: [Jython-users] Python packages using C libraries on Jython

[Krzysiek P. <krz...@gm...>]

Thanks!

2017-07-25 23:06 GMT+02:00 <jem...@fr...>:

> See http://jyni.org/
>
> On Tue, 25 Jul 2017 19:43:17 +0200, Krzysiek Płachno
> <krz...@gm...> wrote:
> > Hey!
> > Thanks for previous answers to my question!
> > I have another one. I found out that if a python package uses C
> libraries
> > it cannot be used by Jython
> (https://stackoverflow.com/a/13684001/4703098
> > [1]). There are plenty of such libraries - such as e.g. numpy. So there
> > wont work by default. But does Jython implement and contain some common
> c
> > libraries to make such common cPython packages working? Or is there any
> > other workaround?
> > Best,Krzysztof
> >
> >
> > Links:
> > ------
> > [1] https://stackoverflow.com/a/13684001/4703098
>

Re: [Jython-users] Python packages using C libraries on Jython

[<jem...@fr...>]

See http://jyni.org/

On Tue, 25 Jul 2017 19:43:17 +0200, Krzysiek Płachno
<krz...@gm...> wrote:
> Hey!
> Thanks for previous answers to my question! 
> I have another one. I found out that if a python package uses C
libraries
> it cannot be used by Jython
(https://stackoverflow.com/a/13684001/4703098
> [1]). There are plenty of such libraries - such as e.g. numpy. So there
> wont work by default. But does Jython implement and contain some common
c
> libraries to make such common cPython packages working? Or is there any
> other workaround?
> Best,Krzysztof
> 
> 
> Links:
> ------
> [1] https://stackoverflow.com/a/13684001/4703098

[Jython-users] Python packages using C libraries on Jython

[Krzysiek P. <krz...@gm...>]

Hey!

Thanks for previous answers to my question!

I have another one. I found out that if a python package uses C libraries
it cannot be used by Jython (https://stackoverflow.com/a/13684001/4703098).
There are plenty of such libraries - such as e.g. numpy. So there won't
work by default. But does Jython implement and contain some common c
libraries to make such common cPython packages working? Or is there any
other workaround?

Best,
Krzysztof

Re: [Jython-users] Installing python packages in Jython

[Jim B. <jim...@py...>]

Jython 2.7.1 is the implementation of Python 2.7, so that's what you should
be using.

On Thu, Jul 20, 2017 at 9:08 AM, Krzysiek Płachno <krz...@gm...
> wrote:

> But which version of python packages if indented to use with Jython 2.7.1?
> Is it Python 2.7?
> Any others are possible?
>
> Best,
> Krzysztof
>
> 2017-07-20 16:36 GMT+02:00 Jim Baker <jim...@py...>:
>
>> Eggs and wheels are both pure Python package formats and work well on
>> Jython 2.7. In particular, the distribution of Jython 2.7.1 uses the
>> standard wheels for both pip and setuptools from upstream PyPA development.
>>
>> But if I had to pick, I would go for the wheel format.
>>
>> On Thu, Jul 20, 2017 at 2:37 AM, Krzysiek Płachno <
>> krz...@gm...> wrote:
>>
>>> To clarify the case: what I have already done is successful import of
>>> python library via Jython. Now question that I have is which version of
>>> python library will be the safest to use with Jython 2.7.1.
>>>
>>> Best,
>>> Krzysztof
>>>
>>> 2017-07-19 23:27 GMT+02:00 Krzysiek Płachno <krz...@gm...>:
>>>
>>>> Hello!
>>>>
>>>> I'm contributing to XWiki open source project http://www.xwiki.org/.
>>>> XWiki platform apart from many wonderful features allows for scripting in
>>>> python on its pages. Under the hood it's Jython execute the python script.
>>>>
>>>> My current task is to enable installing packages form PyPi repository
>>>> (making them available for Java classloader in XWiki instance) so that they
>>>> can be imported by Jython in any python script.
>>>> The doubt that I have is what the version of package should be for
>>>> given version of Jython.
>>>>
>>>> 1) The version of Jython that we use is 2.7.1. Then, should the python
>>>> packages be compatible with python 2.7?
>>>> 2) Is there any documentation page where I could get to know more on
>>>> this topic?
>>>> 3) Does it make any difference if package is in .egg or .whl format?
>>>>
>>>> Thanks in advance for help!
>>>> Best,
>>>> Krzysztof Płachno
>>>>
>>>
>>>
>>> ------------------------------------------------------------
>>> ------------------
>>> Check out the vibrant tech community on one of the world's most
>>> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
>>> _______________________________________________
>>> Jython-users mailing list
>>> Jyt...@li...
>>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>>
>>>
>>
>

Re: [Jython-users] Installing python packages in Jython

[Krzysiek P. <krz...@gm...>]

But which version of python packages if indented to use with Jython 2.7.1?
Is it Python 2.7?
Any others are possible?

Best,
Krzysztof

2017-07-20 16:36 GMT+02:00 Jim Baker <jim...@py...>:

> Eggs and wheels are both pure Python package formats and work well on
> Jython 2.7. In particular, the distribution of Jython 2.7.1 uses the
> standard wheels for both pip and setuptools from upstream PyPA development.
>
> But if I had to pick, I would go for the wheel format.
>
> On Thu, Jul 20, 2017 at 2:37 AM, Krzysiek Płachno <
> krz...@gm...> wrote:
>
>> To clarify the case: what I have already done is successful import of
>> python library via Jython. Now question that I have is which version of
>> python library will be the safest to use with Jython 2.7.1.
>>
>> Best,
>> Krzysztof
>>
>> 2017-07-19 23:27 GMT+02:00 Krzysiek Płachno <krz...@gm...>:
>>
>>> Hello!
>>>
>>> I'm contributing to XWiki open source project http://www.xwiki.org/.
>>> XWiki platform apart from many wonderful features allows for scripting in
>>> python on its pages. Under the hood it's Jython execute the python script.
>>>
>>> My current task is to enable installing packages form PyPi repository
>>> (making them available for Java classloader in XWiki instance) so that they
>>> can be imported by Jython in any python script.
>>> The doubt that I have is what the version of package should be for given
>>> version of Jython.
>>>
>>> 1) The version of Jython that we use is 2.7.1. Then, should the python
>>> packages be compatible with python 2.7?
>>> 2) Is there any documentation page where I could get to know more on
>>> this topic?
>>> 3) Does it make any difference if package is in .egg or .whl format?
>>>
>>> Thanks in advance for help!
>>> Best,
>>> Krzysztof Płachno
>>>
>>
>>
>> ------------------------------------------------------------
>> ------------------
>> Check out the vibrant tech community on one of the world's most
>> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
>> _______________________________________________
>> Jython-users mailing list
>> Jyt...@li...
>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>
>>
>

Re: [Jython-users] Installing python packages in Jython

[Jim B. <jim...@py...>]

Eggs and wheels are both pure Python package formats and work well on
Jython 2.7. In particular, the distribution of Jython 2.7.1 uses the
standard wheels for both pip and setuptools from upstream PyPA development.

But if I had to pick, I would go for the wheel format.

On Thu, Jul 20, 2017 at 2:37 AM, Krzysiek Płachno <krz...@gm...
> wrote:

> To clarify the case: what I have already done is successful import of
> python library via Jython. Now question that I have is which version of
> python library will be the safest to use with Jython 2.7.1.
>
> Best,
> Krzysztof
>
> 2017-07-19 23:27 GMT+02:00 Krzysiek Płachno <krz...@gm...>:
>
>> Hello!
>>
>> I'm contributing to XWiki open source project http://www.xwiki.org/.
>> XWiki platform apart from many wonderful features allows for scripting in
>> python on its pages. Under the hood it's Jython execute the python script.
>>
>> My current task is to enable installing packages form PyPi repository
>> (making them available for Java classloader in XWiki instance) so that they
>> can be imported by Jython in any python script.
>> The doubt that I have is what the version of package should be for given
>> version of Jython.
>>
>> 1) The version of Jython that we use is 2.7.1. Then, should the python
>> packages be compatible with python 2.7?
>> 2) Is there any documentation page where I could get to know more on this
>> topic?
>> 3) Does it make any difference if package is in .egg or .whl format?
>>
>> Thanks in advance for help!
>> Best,
>> Krzysztof Płachno
>>
>
>
> ------------------------------------------------------------
> ------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> _______________________________________________
> Jython-users mailing list
> Jyt...@li...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>
>

Re: [Jython-users] Installing python packages in Jython

[Krzysiek P. <krz...@gm...>]

To clarify the case: what I have already done is successful import of
python library via Jython. Now question that I have is which version of
python library will be the safest to use with Jython 2.7.1.

Best,
Krzysztof

2017-07-19 23:27 GMT+02:00 Krzysiek Płachno <krz...@gm...>:

> Hello!
>
> I'm contributing to XWiki open source project http://www.xwiki.org/.
> XWiki platform apart from many wonderful features allows for scripting in
> python on its pages. Under the hood it's Jython execute the python script.
>
> My current task is to enable installing packages form PyPi repository
> (making them available for Java classloader in XWiki instance) so that they
> can be imported by Jython in any python script.
> The doubt that I have is what the version of package should be for given
> version of Jython.
>
> 1) The version of Jython that we use is 2.7.1. Then, should the python
> packages be compatible with python 2.7?
> 2) Is there any documentation page where I could get to know more on this
> topic?
> 3) Does it make any difference if package is in .egg or .whl format?
>
> Thanks in advance for help!
> Best,
> Krzysztof Płachno
>

[Jython-users] Installing python packages in Jython

[Krzysiek P. <krz...@gm...>]

Hello!

I'm contributing to XWiki open source project http://www.xwiki.org/. XWiki
platform apart from many wonderful features allows for scripting in python
on its pages. Under the hood it's Jython execute the python script.

My current task is to enable installing packages form PyPi repository
(making them available for Java classloader in XWiki instance) so that they
can be imported by Jython in any python script.
The doubt that I have is what the version of package should be for given
version of Jython.

1) The version of Jython that we use is 2.7.1. Then, should the python
packages be compatible with python 2.7?
2) Is there any documentation page where I could get to know more on this
topic?
3) Does it make any difference if package is in .egg or .whl format?

Thanks in advance for help!
Best,
Krzysztof Płachno

Re: [Jython-users] 2.7.1 significantly slower than 2.7.0

[Randall W. <ran...@al...>]

This is http://bugs.jython.org/issue2604 <http://bugs.jython.org/issue2604>

Randall Wood

> On Jul 4, 2017, at 09:24, Stefan Richthofer <Ste...@gm...> wrote:
> 
> For me this sounds like an actual bug rather than a normal speed regression.
> 120times slower means there must be something really wrong.
> Plese file a bug about this at bugs.jython.org so we can keep track.
> Add all code and information that is needed for reproducing.
>  
> > what do you need me to also test to include in a bug report
> Please make reprodrucing as easy as possible.
> Provide platform info and Java version and the command/method you use
> for launching Jython (IDE, java -jar, jython launcher, etc).
> Are you using jython-standalone or did you install it with the installer, etc?
> Further stuff on request/discussion.
> If you want, you can try to use the profiler hook to find the bottleneck.
>  
> Best
>  
> -Stefan
>  
> Gesendet: Dienstag, 04. Juli 2017 um 11:32 Uhr
> Von: "Randall Wood" <ran...@al...>
> An: jyt...@li...
> Betreff: [Jython-users] 2.7.1 significantly slower than 2.7.0
> I have a process that uses Jython to check that files are being checked into a SCM using the correct line ends (its a Java test that uses Jython, embedded using JSR 223, to run 29057 tests. Each test is the following Jython script (written on the fly in Java where PATH is the file to check and changes every time):
>  
> import os
> failing = False
> if "\r\n" in open(os.path.normpath(PATH), "rb").read():
>     failing = True
>  
> This has the following runtimes (in seconds) on the same computer with no other changes than Jython version:
>  
> Jython 2.7.0: 89.442 (~1.5 minutes)
> Jython 2.7.1: 10,788.489 (~3 hours or ~120 times as long as 2.7.0)
>  
> What could be causing this discrepancy (is there something I can do), and what do you need me to also test to include in a bug report?
>  
> Randall Wood
> JMRI Developer - http://jmri.org <http://jmri.org/>
> Alexandria Software - http://alexandriasoftware.com <http://alexandriasoftware.com/>
> Northern Virginia NTRAK - http://nvntrak.org <http://nvntrak.org/>
>  
> 
>  
> 
> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot_______________________________________________ <http://sdm.link/slashdot_______________________________________________> Jython-users mailing list Jyt...@li... https://lists.sourceforge.net/lists/listinfo/jython-users <https://lists.sourceforge.net/lists/listinfo/jython-users>

Re: [Jython-users] 2.7.1 significantly slower than 2.7.0

[Stefan R. <Ste...@gm...>]

<html><head></head><body><div style="font-family: Verdana;font-size: 12.0px;"><div>
<div>For me this sounds like an actual bug rather than a normal speed regression.</div>

<div>120times slower means there must be something really wrong.</div>

<div>Plese file a bug about this at bugs.jython.org so we can keep track.</div>

<div>Add all code and information that is needed for reproducing.</div>

<div>&nbsp;</div>

<div>&gt; what do you need me to also test to include in a bug report</div>

<div>Please make reprodrucing as easy as possible.</div>

<div>Provide platform info and Java version and the command/method you use</div>

<div>for launching Jython (IDE, java -jar, jython launcher, etc).</div>

<div>Are you using jython-standalone or did you install it with the installer, etc?</div>

<div>Further stuff on request/discussion.</div>

<div>If you want, you can try to use the profiler hook to find the bottleneck.</div>

<div>&nbsp;</div>

<div>Best</div>

<div>&nbsp;</div>

<div>-Stefan</div>

<div>&nbsp;
<div name="quote" style="margin:10px 5px 5px 10px; padding: 10px 0 10px 10px; border-left:2px solid #C3D9E5; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">
<div style="margin:0 0 10px 0;"><b>Gesendet:</b>&nbsp;Dienstag, 04. Juli 2017 um 11:32 Uhr<br/>
<b>Von:</b>&nbsp;&quot;Randall Wood&quot; &lt;ran...@al...&gt;<br/>
<b>An:</b>&nbsp;jyt...@li...<br/>
<b>Betreff:</b>&nbsp;[Jython-users] 2.7.1 significantly slower than 2.7.0</div>

<div name="quoted-content">
<div>
<div>I have a process that uses Jython to check that files are being checked into a SCM using the correct line ends (its a Java test that uses Jython, embedded using JSR 223, to run 29057 tests. Each test is the following Jython script (written on the fly in Java where PATH is the file to check and changes every time):</div>

<div>&nbsp;</div>

<div>
<div>import os</div>

<div>failing = False</div>

<div>if &quot;&#92;r&#92;n&quot; in open(os.path.normpath(PATH), &quot;rb&quot;).read():</div>

<div>&nbsp;&nbsp; &nbsp;failing = True</div>
</div>

<div>&nbsp;</div>

<div>This has the following runtimes (in seconds) on the same computer with no other changes than Jython version:</div>

<div>&nbsp;</div>

<div>Jython 2.7.0: 89.442 (~1.5 minutes)<br/>
Jython 2.7.1: 10,788.489 (~3 hours or ~120 times as long as 2.7.0)<br/>
&nbsp;</div>

<div>What could be causing this discrepancy (is there something I can do), and what do you need me to also test to include in a bug report?</div>
&nbsp;

<div>
<div style="color: rgb(0,0,0);letter-spacing: normal;text-indent: 0.0px;text-transform: none;white-space: normal;word-spacing: 0.0px;">
<div>Randall Wood</div>

<div>JMRI Developer - <a href="http://jmri.org" target="_blank">http://jmri.org</a></div>

<div>Alexandria Software - <a href="http://alexandriasoftware.com" target="_blank">http://alexandriasoftware.com</a><br/>
Northern Virginia NTRAK -&nbsp;<a href="http://nvntrak.org" target="_blank">http://nvntrak.org</a></div>

<div>&nbsp;</div>
</div>
<br class="Apple-interchange-newline"/>
&nbsp;</div>
<br/>
------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world&#39;s most engaging tech sites, Slashdot.org! <a href="http://sdm.link/slashdot_______________________________________________" target="_blank">http://sdm.link/slashdot_______________________________________________</a> Jython-users mailing list Jyt...@li... <a href="https://lists.sourceforge.net/lists/listinfo/jython-users" target="_blank">https://lists.sourceforge.net/lists/listinfo/jython-users</a></div>
</div>
</div>
</div>
</div></div></body></html>

[Jython-users] 2.7.1 significantly slower than 2.7.0

[Randall W. <ran...@al...>]

I have a process that uses Jython to check that files are being checked into a SCM using the correct line ends (its a Java test that uses Jython, embedded using JSR 223, to run 29057 tests. Each test is the following Jython script (written on the fly in Java where PATH is the file to check and changes every time):

import os
failing = False
if "\r\n" in open(os.path.normpath(PATH), "rb").read():
    failing = True

This has the following runtimes (in seconds) on the same computer with no other changes than Jython version:

Jython 2.7.0: 89.442 (~1.5 minutes)
Jython 2.7.1: 10,788.489 (~3 hours or ~120 times as long as 2.7.0)

What could be causing this discrepancy (is there something I can do), and what do you need me to also test to include in a bug report?

Randall Wood
JMRI Developer - http://jmri.org
Alexandria Software - http://alexandriasoftware.com
Northern Virginia NTRAK - http://nvntrak.org

[Jython-users] Jython 2.7.1 final released!

[<fwi...@gm...>]

On behalf of the Jython development team, I'm pleased to announce that
Jython 2.7.1 final is released! We thought 2007-07-01 was the perfect time :)

Thanks to Amobee for sponsoring my work on Jython, and thanks to the
many contributors to Jython!

Details are here:

http://fwierzbicki.blogspot.com/2017/07/jython-271-final-released.html

-Frank

[Jython-users] Jython 2.7.1 rc3 released!

[<fwi...@gm...>]

On behalf of the Jython development team, I'm pleased to announce that
Jython 2.7.1 rc3 is released!

Thanks to Amobee for sponsoring my work on Jython, and thanks to the
many contributors to Jython!

Details are here:

http://fwierzbicki.blogspot.com/2017/06/jython-271-release-candidate-3-released.html

-Frank

[Jython-users] Need for one more release candidate for Jython 2.7.1

[Jim B. <jim...@py...>]

So it looks like we will need a RC3 for Jython 2.7.1, given the following
two bugs:

   - http://bugs.jython.org/issue2596 - Linebreaks in exceptions are wrong
   - PENDING
   - http://bugs.jython.org/issue2593 - file.write(obj) if obj is not a str
   or buffer raises j.l.NullPointerException - OPEN

#2596, now fixed in master, is just the sort of bug that may scramble
existing user tests (although multi-line messages are relatively rare).
#2593 has an easy path to raising a NullPointerException that can come up
in common Python code. But it should be very straightforward to guard
against, so we should have a fix for it momentarily I would assume.

And that is it. There are exactly 301 other bugs that are open, as I write
this email, so clearly we have plenty of work to consider in the future.
But in my judgment, we are about there for a final release.

But it's still not too late to submit a bug against RC2! Please test
against the download links on Frank's blog post:
http://fwierzbicki.blogspot.com/2017/06/jython-271-rc2-released.html

- Jim

[Jython-users] PyDev 5.8.0: Code Coverage fixes, IronPython debugging

[Fabio Z. <fa...@gm...>]

PyDev 5.8.0 Release Highlights

   -

   *Important* PyDev now requires Java 8 and Eclipse 4.6 (Neon) onwards.
   - PyDev 5.2.0 is the last release supporting Eclipse 4.5 (Mars).
   -

   *Code Analysis*
   - Fixed issue getting existing PyLint markers.
      - There's now an Info and an Ignore level.
   -

   *Debugger*
   - The debugger now provides hooks for clients and provides ways to
      extend the handling of custom types. See:
      https://github.com/fabioz/PyDev.Debugger/tree/master/pydevd_plugins/extensions
(patch
      by *Yuli Fiterman*).
      - Fixed issue where the debugger could end up removing quotes on
      args. *#PyDev-797*
      - The debugger now works with IronPython again -- although note that
      *IronPython* *2.7.6* and *2.7.7* have a critical bug which prevents
      IronPython from working in PyDev:
      https://github.com/IronLanguages/main/issues/1663
   -

   *Code Coverage*
   - Fixed issue getting code-coverage version. *#PyDev-791*
      - Properly works when running with pytest (provided that pytest-cov
      is installed).
   -

   *Others*
   - Update .yaml file for google app engine project templates (patch by
      *JunjieW*).
      - Upgraded Lucene to 6.1.0 (patch by *Sopot Cela*).
      - Update docstring from parameters (Ctrl+1 on *def*) properly
      considers sphinx with types. *#PyDev-787*
      - Code Completion: Properly finding *__init__* from superclass in
      inherited classes. *#PyDev-802*
      - No longer showing icon to start interactive console in toolbar
      because Eclipse could end up creating multiple entries which were shown
      forever. *#PyDev-708*
      - Other minor bugfixes.

What is PyDev?

PyDev is an open-source Python IDE on top of Eclipse for Python, Jython and
IronPython development.

It comes with goodies such as code completion, syntax highlighting, syntax
analysis, code analysis, refactor, debug, interactive console, etc.

Details on PyDev: http://pydev.org
Details on its development: http://pydev.blogspot.com
What is LiClipse?

LiClipse is a PyDev standalone with goodies such as support for Multiple
cursors, theming, TextMate bundles and a number of other languages such as
Django Templates, Jinja2, Kivy Language, Mako Templates, Html, Javascript,
etc.

It's also a commercial counterpart which helps supporting the development
of PyDev.

Details on LiClipse: http://www.liclipse.com/

Cheers,

--
Fabio Zadrozny
------------------------------

Software Developer

LiClipse
http://www.liclipse.com

PyDev - Python Development Environment for Eclipse
http://pydev.org
http://pydev.blogspot.com

PyVmMonitor - Python Profiler
http://www.pyvmmonitor.com/