jython-users — Discussion of and questions about using Jython

[Jython-users] hook into nfldb with PythonInterpreter?

[Thufir H. <haw...@gm...>]

I'm very new to Python and Jython, but installed nfldb from

pip install --user nfldb

which is on github:

https://github.com/BurntSushi/nfldb/wiki/More-examples


Coming at this from Java, how would I hook into nfldb with Java?  Or,
perhaps, run the code in Jython?

I'm sure there's a general solution or approach, would appreciate any
pointers.  Perhaps simply using JNI to leverage the work that's gone into
this library already.

It looks like probably org.python.util.PythonInterpreter is the best way 
to invoke this library?  I've seen examples of how to invoke a specific 
script, but this API is a bit larger.  How would I hook into an API?




thanks,

Thufir

Re: [Jython-users] Compilation unit size exploding in JVM

[Jeff M. <jef...@za...>]

Awesome thanks; when I had the issue, it was with fairly small .py modules,
but I was importing some of the DB modules as well.

I'll see if i can reproduce on the current trunk and get back to you;
thanks!

jeff

On Fri, Jan 13, 2017 at 2:57 AM, Stefan Richthofer <Ste...@gm...
> wrote:

> Jeff, is it issue #527524 (http://bugs.jython.org/issue527524) that you
> observed?
> In http://bugs.jython.org/issue2473 Jim mentions that "In general, 2.7.0
> does a better job with large methods than 2.5.x, due to collection literal
> splitting", so it surprises me that you observed things to have gone worse
> in 2.7.0.
>
> - If you observed some different issue, it would be good if you could
> specify what behavior "blows up" actually describes. Ideal would be to file
> an issue with steps to reproduce, if none exists yet.
>
> - If it is #527524, you can try the newest Jython 2.7.1 trunk-version.
> Provide a CPython 2.7 bytecode-file (.pyc) of the problematic module (e.g.
> by running 'python -m py_compile filename') in the same folder. (It is
> only needed in compilation phase; Jython will embed that bytecode into the
> resulting class-file for problematic methods, so if you precompile to
> class-files you won't have to distribute the pyc-file.)
>
> Best
>
> Stefan
>
>
> *Gesendet:* Donnerstag, 12. Januar 2017 um 21:01 Uhr
> *Von:* "Jeff Mitchell" <jef...@za...>
> *An:* jyt...@li...
> *Betreff:* [Jython-users] Compilation unit size exploding in JVM
> Was just reminded about an issue I had back in December; I don't have
> logfile evidence handy but may be able to generate some if needed.
>
> There seems to be an emitted unit sizing issue in 2.7 -- ie: python code
> that ran just fine in 2.5 sometimes blows up in 2.7 when the JVM tries to
> invoke it; the on the fly compilation may be dumping in too many tokens or
> something.
>
> The workaround I had at the time was to try a few earlier builds of 2.7 or
> just go back to 2.5 .. ie: the standard 2.7 from the website, vs the most
> recent from the source repo. IIRC, the more recent the release, the larger
> the space used, and the higher chance the JVM would reject it. 2.5 had no
> problems whatsoever.
>
> JVM being openjdk in this case on a linux VM.
>
> Without the logfiles on hand its hard to pull out the correct keywords
> here,but does this ring a bell with anyone?
>
> I seem to recall there was no easy JVM tweak to work around it short of
> recompiling the JVM (ugh), but I expected the issue may just take care of
> itself later, and it wasn't critical for me at the time.
>
> Anyone know if this is a known issue? resolved? or an ongoing concern?
>
> jeff
>
> ------------------------------------------------------------------------------
> Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon
> Phi processor-based developer platforms. With one year of Intel Parallel
> Studio XE. Training and support from Colfax. Order your platform today.
> http://sdm.link/xeonphi_______________________________________________
> Jython-users mailing list Jyt...@li...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>

Re: [Jython-users] Compilation unit size exploding in JVM

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

<html><head></head><body><div style="font-family: Verdana;font-size: 12.0px;"><div>
<div>Jeff, is it issue #527524 (<a href="http://bugs.jython.org/issue527524" target="_blank">http://bugs.jython.org/issue527524</a>) that you observed?</div>

<div>In http://bugs.jython.org/issue2473 Jim mentions that &quot;In general, 2.7.0 does a better job with large methods than 2.5.x, due to collection literal splitting&quot;, so it surprises me that you observed things to have gone worse in 2.7.0.</div>

<div>&nbsp;</div>

<div>- If you observed some different issue, it would be good if you could specify what behavior &quot;blows up&quot; actually describes. Ideal would be to file an issue with steps to reproduce, if none exists yet.</div>

<div>&nbsp;</div>

<div>- If it is #527524, you can try the newest Jython 2.7.1 trunk-version. Provide a CPython 2.7 bytecode-file (.pyc) of the problematic module (e.g. by running &#39;<span class="blob-code-inner"><span class="pl-s">python -m py_compile </span>filename&#39;) in the same folder. (It is only needed in compilation phase; Jython will embed that bytecode into the resulting class-file for problematic methods, so if you precompile to class-files you won&#39;t have to distribute the pyc-file.)</span></div>

<div>
<div>&nbsp;</div>

<div>Best</div>

<div>&nbsp;</div>

<div>Stefan</div>

<div>&nbsp;</div>

<div>&nbsp;</div>

<div style="margin: 10.0px 5.0px 5.0px 10.0px;padding: 10.0px 0 10.0px 10.0px;border-left: 2.0px solid rgb(195,217,229);">
<div style="margin: 0 0 10.0px 0;"><b>Gesendet:</b>&nbsp;Donnerstag, 12. Januar 2017 um 21:01 Uhr<br/>
<b>Von:</b>&nbsp;&quot;Jeff Mitchell&quot; &lt;jef...@za...&gt;<br/>
<b>An:</b>&nbsp;jyt...@li...<br/>
<b>Betreff:</b>&nbsp;[Jython-users] Compilation unit size exploding in JVM</div>

<div>
<div>Was just reminded about an issue I had back in December; I don&#39;t have logfile evidence handy but may be able to generate some if needed.
<div>&nbsp;</div>

<div>There seems to be an emitted unit sizing issue in 2.7 -- ie: python code that ran just fine in 2.5 sometimes blows up in 2.7 when the JVM tries to invoke it; the on the fly compilation may be dumping in too many tokens or something.</div>

<div>&nbsp;</div>

<div>The workaround I had at the time was to try a few earlier builds of 2.7 or just go back to 2.5 .. ie: the standard 2.7 from the website, vs the most recent from the source repo. IIRC, the more recent the release, the larger the space used, and the higher chance the JVM would reject it. 2.5 had no problems whatsoever.</div>

<div>&nbsp;</div>

<div>JVM being openjdk in this case on a linux VM.</div>

<div>&nbsp;</div>

<div>Without the logfiles on hand its hard to pull out the correct keywords here,but does this ring a bell with anyone?</div>

<div>&nbsp;</div>

<div>I seem to recall there was no easy JVM tweak to work around it short of recompiling the JVM (ugh), but I expected the issue may just take care of itself later, and it wasn&#39;t critical for me at the time.</div>

<div>&nbsp;</div>

<div>Anyone know if this is a known issue? resolved? or an ongoing concern?</div>

<div>&nbsp;</div>

<div>jeff</div>

<div>&nbsp;</div>
</div>
------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today. <a href="http://sdm.link/xeonphi_______________________________________________" target="_blank">http://sdm.link/xeonphi_______________________________________________</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></body></html>

Re: [Jython-users] Hi,

[Christian P. <chr...@we...>]

On 12.01.2017 19:48, Jeff Mitchell wrote:
> Jython 2.7 is very recent, certainly not mid-2015.. more like what, Q3 
> 2016?
While I cannot give any information on the activity of the Jython 
project, I guess a major problem is communication. Last news entry on 
the webpage is from may 2015 "Jython 2.7.0 final released". As there 
were frequent news entries before the impression could be that the 
project is dead.

This is definitely not true when one looks at the mercurial activity log:
https://hg.python.org/jython

Probably some updates now and then on the project news section from the 
devs would be a nice thing

Christian

Re: [Jython-users] Hi,

[Fernando C. <fc...@gm...>]

On 1/12/17, Lior Amar <lio...@pa...> wrote:
> Hi All,
>
> My name is Lior and I am working at Parallel Machine which is a startup
> company
> working on machine learning and streaming.

There's an open source Java library for machine learning developed at
http://cs.waikato.ac.nz/ml/weka/
not sure if it'd help for your needs.

I guess it could be used from Jython. But I have not tried it.

Wrt Jython's development look at this PyCon 2015 keynote. I think your
point is answered by Jim Baker on the first question ;)

https://www.youtube.com/watch?v=hLm3garVQFo

FC

Re: [Jython-users] Hi,

[Liam S. <lsl...@gm...>]

Also another random user here.  We've been running jython2.7 in production
for awhile now also without issue.  It just works.  Jython powers our
real-time in-house built log collection/parsing engine.  We also use
jython on Tomcat to serve as the front-end to our home-grown object-store
running on top of a large Hadoop cluster.

thanks,
liam


On Thu, Jan 12, 2017 at 11:25 AM, David Charles <dav...@gm...>
wrote:

> Another random user here.  I'm having quite a bit of success with
> jython2.7 in production.  I can think of only a couple of issues that I've
> ever had with it, and I was able to work around them.
> D
>
> On Thu, Jan 12, 2017 at 11:48 AM, Jeff Mitchell <jef...@za...>
> wrote:
>
>> (I'm just a random user, nothing to do with Jython project.)
>>
>> Jython 2.7 is very recent, certainly not mid-2015.. more like what, Q3
>> 2016? That said, 2.7 is not perfect, just very good (ie: when it comes to
>> things like specific https bugs it seems to be changing every month ...
>> people are certainly working on things.)
>>
>> That said, I think Jython is more silent than some other projects.. not
>> sure how many use it, but it generally just works so no one complains about
>> it :)
>>
>> jeff
>>
>> On Thu, Jan 12, 2017 at 12:32 PM, Lior Amar <
>> lio...@pa...> wrote:
>>
>>> Hi All,
>>>
>>> My name is Lior and I am working at Parallel Machine which is a startup
>>> company
>>> working on machine learning and streaming.
>>>
>>> I was wondering what is the roadmap for Jython project. Is there any
>>> intention to support python 3 in the future.
>>> We are considering to use Jython but we have some concerns regarding the
>>> project future.
>>> I also noticed that the last release was from May 2015.
>>>
>>> Can anyone shade some light on the subject?
>>> Maybe point me to other resource (blogs, websites) discussing this?
>>>
>>> Any help appreciated.
>>>
>>> Lior.
>>>
>>>
>>>
>>> ------------------------------------------------------------
>>> ------------------
>>> Developer Access Program for Intel Xeon Phi Processors
>>> Access to Intel Xeon Phi processor-based developer platforms.
>>> With one year of Intel Parallel Studio XE.
>>> Training and support from Colfax.
>>> Order your platform today. http://sdm.link/xeonphi
>>> _______________________________________________
>>> Jython-users mailing list
>>> Jyt...@li...
>>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>>
>>>
>>
>> ------------------------------------------------------------
>> ------------------
>> Developer Access Program for Intel Xeon Phi Processors
>> Access to Intel Xeon Phi processor-based developer platforms.
>> With one year of Intel Parallel Studio XE.
>> Training and support from Colfax.
>> Order your platform today. http://sdm.link/xeonphi
>> _______________________________________________
>> Jython-users mailing list
>> Jyt...@li...
>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>
>>
>
> ------------------------------------------------------------
> ------------------
> Developer Access Program for Intel Xeon Phi Processors
> Access to Intel Xeon Phi processor-based developer platforms.
> With one year of Intel Parallel Studio XE.
> Training and support from Colfax.
> Order your platform today. http://sdm.link/xeonphi
> _______________________________________________
> Jython-users mailing list
> Jyt...@li...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>
>

[Jython-users] Compilation unit size exploding in JVM

[Jeff M. <jef...@za...>]

Was just reminded about an issue I had back in December; I don't have
logfile evidence handy but may be able to generate some if needed.

There seems to be an emitted unit sizing issue in 2.7 -- ie: python code
that ran just fine in 2.5 sometimes blows up in 2.7 when the JVM tries to
invoke it; the on the fly compilation may be dumping in too many tokens or
something.

The workaround I had at the time was to try a few earlier builds of 2.7 or
just go back to 2.5 .. ie: the standard 2.7 from the website, vs the most
recent from the source repo. IIRC, the more recent the release, the larger
the space used, and the higher chance the JVM would reject it. 2.5 had no
problems whatsoever.

JVM being openjdk in this case on a linux VM.

Without the logfiles on hand its hard to pull out the correct keywords
here,but does this ring a bell with anyone?

I seem to recall there was no easy JVM tweak to work around it short of
recompiling the JVM (ugh), but I expected the issue may just take care of
itself later, and it wasn't critical for me at the time.

Anyone know if this is a known issue? resolved? or an ongoing concern?

jeff

Re: [Jython-users] Hi,

[David C. <dav...@gm...>]

Another random user here.  I'm having quite a bit of success with jython2.7
in production.  I can think of only a couple of issues that I've ever had
with it, and I was able to work around them.
D

On Thu, Jan 12, 2017 at 11:48 AM, Jeff Mitchell <jef...@za...>
wrote:

> (I'm just a random user, nothing to do with Jython project.)
>
> Jython 2.7 is very recent, certainly not mid-2015.. more like what, Q3
> 2016? That said, 2.7 is not perfect, just very good (ie: when it comes to
> things like specific https bugs it seems to be changing every month ...
> people are certainly working on things.)
>
> That said, I think Jython is more silent than some other projects.. not
> sure how many use it, but it generally just works so no one complains about
> it :)
>
> jeff
>
> On Thu, Jan 12, 2017 at 12:32 PM, Lior Amar <lior.amar@parallelmachines.
> com> wrote:
>
>> Hi All,
>>
>> My name is Lior and I am working at Parallel Machine which is a startup
>> company
>> working on machine learning and streaming.
>>
>> I was wondering what is the roadmap for Jython project. Is there any
>> intention to support python 3 in the future.
>> We are considering to use Jython but we have some concerns regarding the
>> project future.
>> I also noticed that the last release was from May 2015.
>>
>> Can anyone shade some light on the subject?
>> Maybe point me to other resource (blogs, websites) discussing this?
>>
>> Any help appreciated.
>>
>> Lior.
>>
>>
>>
>> ------------------------------------------------------------
>> ------------------
>> Developer Access Program for Intel Xeon Phi Processors
>> Access to Intel Xeon Phi processor-based developer platforms.
>> With one year of Intel Parallel Studio XE.
>> Training and support from Colfax.
>> Order your platform today. http://sdm.link/xeonphi
>> _______________________________________________
>> Jython-users mailing list
>> Jyt...@li...
>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>
>>
>
> ------------------------------------------------------------
> ------------------
> Developer Access Program for Intel Xeon Phi Processors
> Access to Intel Xeon Phi processor-based developer platforms.
> With one year of Intel Parallel Studio XE.
> Training and support from Colfax.
> Order your platform today. http://sdm.link/xeonphi
> _______________________________________________
> Jython-users mailing list
> Jyt...@li...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>
>

Re: [Jython-users] Hi,

[Jeff M. <jef...@za...>]

(I'm just a random user, nothing to do with Jython project.)

Jython 2.7 is very recent, certainly not mid-2015.. more like what, Q3
2016? That said, 2.7 is not perfect, just very good (ie: when it comes to
things like specific https bugs it seems to be changing every month ...
people are certainly working on things.)

That said, I think Jython is more silent than some other projects.. not
sure how many use it, but it generally just works so no one complains about
it :)

jeff

On Thu, Jan 12, 2017 at 12:32 PM, Lior Amar <lio...@pa...>
wrote:

> Hi All,
>
> My name is Lior and I am working at Parallel Machine which is a startup
> company
> working on machine learning and streaming.
>
> I was wondering what is the roadmap for Jython project. Is there any
> intention to support python 3 in the future.
> We are considering to use Jython but we have some concerns regarding the
> project future.
> I also noticed that the last release was from May 2015.
>
> Can anyone shade some light on the subject?
> Maybe point me to other resource (blogs, websites) discussing this?
>
> Any help appreciated.
>
> Lior.
>
>
>
> ------------------------------------------------------------
> ------------------
> Developer Access Program for Intel Xeon Phi Processors
> Access to Intel Xeon Phi processor-based developer platforms.
> With one year of Intel Parallel Studio XE.
> Training and support from Colfax.
> Order your platform today. http://sdm.link/xeonphi
> _______________________________________________
> Jython-users mailing list
> Jyt...@li...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>
>

[Jython-users] Hi,

[Lior A. <lio...@pa...>]

Hi All,

My name is Lior and I am working at Parallel Machine which is a startup
company
working on machine learning and streaming.

I was wondering what is the roadmap for Jython project. Is there any
intention to support python 3 in the future.
We are considering to use Jython but we have some concerns regarding the
project future.
I also noticed that the last release was from May 2015.

Can anyone shade some light on the subject?
Maybe point me to other resource (blogs, websites) discussing this?

Any help appreciated.

Lior.

Re: [Jython-users] ImportError: No module named re

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

Hi Chandler,

> It looks like jython script want to import some modules from "Lib".
> But it cannot locate the right path to the "Lib".

The Lib files are only present in jython-standalone, not jython base:

$ jar tf ~/.m2/repository/org/python/jython/2.7.0/jython-2.7.0.jar|grep
^Lib|wc -l
       0
$ jar tf ~/.m2/repository/org/python/jython-standalone/2.7.0/
jython-standalone-2.7.0.jar|grep ^Lib|wc -l
    1226

I'm not sure how JRuby relates to this issue though, except that Jython and
JRuby are rather incompatible with one another on the same classpath,
unless you take special measures [1].

Regards,
Curtis

[1] https://github.com/scijava/jython-shaded

--
Curtis Rueden
LOCI software architect - http://loci.wisc.edu/software
ImageJ2 lead, Fiji maintainer - http://imagej.net/User:Rueden


On Thu, Dec 29, 2016 at 1:13 AM, magicalne <mag...@gm...> wrote:

> Hi all,
>
> I have been through this issue for almost 2 days. I think I have figured it
> out.
>
> I use jsr223(groovy, jython) in my spring boot web project. I can execute
> groovy script, but not jython script.
>
> It looks like jython script want to import some modules from "Lib". But it
> cannot locate the right path to the "Lib".
>
> I think jython is a little guilty on this issue.
>
> The most simple way to get it work is to use :
> *springBoot { requiresUnpack = ['org.jruby:jruby-complete'] }*
>
> You can find it in spring boot doc:
> http://docs.spring.io/spring-boot/docs/current/reference/htm
> l/howto-build.html#howto-extract-specific-libraries-when-an-
> executable-jar-runs
> <http://docs.spring.io/spring-boot/docs/current/reference/ht
> ml/howto-build.html#howto-extract-specific-libraries-when-
> an-executable-jar-runs>
>
> And it explains how it works.
>
>
>
>
> --
> View this message in context: http://python.6.x6.nabble.com/
> Re-ImportError-No-module-named-re-tp5194446p5206030.html
> Sent from the jython-users mailing list archive at Nabble.com.
>
> ------------------------------------------------------------
> ------------------
> 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] ImportError: No module named re

[magicalne <mag...@gm...>]

Hi all,

I have been through this issue for almost 2 days. I think I have figured it
out.

I use jsr223(groovy, jython) in my spring boot web project. I can execute
groovy script, but not jython script.

It looks like jython script want to import some modules from "Lib". But it
cannot locate the right path to the "Lib".

I think jython is a little guilty on this issue. 

The most simple way to get it work is to use :
*springBoot { requiresUnpack = ['org.jruby:jruby-complete'] }*

You can find it in spring boot doc:
http://docs.spring.io/spring-boot/docs/current/reference/html/howto-build.html#howto-extract-specific-libraries-when-an-executable-jar-runs
<http://docs.spring.io/spring-boot/docs/current/reference/html/howto-build.html#howto-extract-specific-libraries-when-an-executable-jar-runs>   

And it explains how it works.




--
View this message in context: http://python.6.x6.nabble.com/Re-ImportError-No-module-named-re-tp5194446p5206030.html
Sent from the jython-users mailing list archive at Nabble.com.

[Jython-users] PyDev 5.4.0 Released

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

PyDev 5.4.0 Released

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).

* If you enjoy PyDev, please show your appreciation through its Patreon
crowdfunding: https://www.patreon.com/fabioz.

* **Initial support for Python 3.6**

    * Code analysis for expressions on f-strings.
    * Syntax highlighting on f-strings.
    * Handling of underscores in numeric literals.
    * Parsing (but still not using) variable annotations.
    * Parsing asynchronous generators and comprehensions.

* **Launching**

    * Improved console description of the launch.
    * Support launching files with **python -m module.name** (instead of
python module/name.py). **Note**: Has to be enabled at **Preferences >
PyDev > Run**.


* **Debugger**

    * Shows return values (may be disabled on preferences > PyDev > Debug).
    * When the user is waiting for some input, it'll no longer try to
evaluate the entered contents.
    * Fix for multiprocess debugging when the debugger is started with a
programmatic breakpoint (pydevd.settrace).

* **Unittest integration**

    * Bugfixes in the pytest integration related to unicode errors.
    * unittest subtests are now properly handled in the PyDev unittest
runner.
    * The currently selected tests are persisted.

* **Others**

    * In Linux, when applying a completion which would automatically add an
import, if the user focuses the completion pop-up (with Tab) and applies
the completion with Shift+Enter, a local import is properly made.

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/

[Jython-users] state of HTTPS serving from jython 2.7.x?

[Jeff M. <jef...@za...>]

Hello everyone!

First - I've never posted here before, so let me preface by saying that
jython is an outstanding piece of work, so thanks to the dev team for their
amazing work.

Every 6mo or year I do a quick check to see if a rudimentary HTTPS server
works (that works in cpython), and have generally had issues (starting back
around jython 2.4 and 2.5); that was okay, as it was well known that ssl
was a missing module and it could be sort of worked around with leveraging
the underlying java framework. (Doing a straight up HTTP Mixin server is a
joy :)

With jython 2.7 release I did another quick check and still no dice (had
the issue with the missing .accept() call); more recently I did a pull from
mercurial and a build, and tried again -- this time (refreshed and built
from source today just to be sure) the server runs but silently hangs. I
didn't debug in further (sorry!); from the commit comments it sounds like
we're building towards 2.7.1rc so it would sound like this stuff should
(theoretically) work.

I'm wondering if it is a 'known thing' that HTTPS/ssl is just not reliable
yet, or if it is something that is 'sometimes reliable' (for various use
cases, specific codecs and browser combinations, etc and so on), or always
reliable and I'm just being silly (quite possible! :)

Thanks again for the project, and your time in replying to my humble
request!

Certificate is self-signed; something like:
openssl req -new -x509 -keyout server.key -out server.pem -days 365 -nodes

The code in question:

#!/home/mit5893/jython-4734d082de59-27rc1merc/dist/bin/jython

import BaseHTTPServer, SimpleHTTPServer
import ssl

print "build httpd"
httpd = BaseHTTPServer.HTTPServer ( ('localhost', 4443),
SimpleHTTPServer.SimpleHTTPRequestHandler)

print "build and wrap socket"
httpd.socket = ssl.wrap_socket ( httpd.socket,
certfile='./keystore/server.pem', server_side=True,
keyfile='./keystore/server.key' )

print "serve forever"
httpd.serve_forever()

[Jython-users] Terminate scripts

[Christian P. <chr...@we...>]

Hi,

I was wondering if there exists a way to terminate a script running an 
endless loop. To clarify the problem I have attached some source code. 
None of the tested methods stops the while loop of the main script:

public class PythonTest {

     private static InteractiveInterpreter engine;

     private static final String CODE = "import time\n" +
             "\n" +
             "while True:\n" +
             "      print('still there')\n" +
             "      time.sleep(1)\n" +
             "";

     private static final String TERMINATE = "import sys\n" +
             "sys.exit()";

     public static void main(String[] args) {

         new Thread(new Runnable() {

             @Override
             public void run() {
                 long start = System.currentTimeMillis();
                 while (System.currentTimeMillis() - 10 * 1000 < start)
                     Thread.yield();

System.out.println(">>>>>>>>>>> Terminating");
//                engine.getSystemState().callExitFunc();
//                engine.getSystemState().exit();
//                engine.interrupt(new 
ThreadState(engine.getSystemState()));
                 execute(TERMINATE);
             }
         }).start();

         engine = new InteractiveInterpreter();

         engine.getSystemState().__setattr__("_jy_interpreter", 
Py.java2py(engine));
         engine.getSystemState().path.insert(0, Py.EmptyString);

         execute(CODE);

         System.out.println("---------- done");
     }

     private static void execute(String input) {
         final PyObject code = Py.compile_command_flags(input, "(none)",
                 CompileMode.exec, new CompilerFlags(), true);

         if (code == Py.None)
             throw new RuntimeException("Could not compile code");

         Py.exec(code, engine.getLocals(), null);
     }
}



thanks
Christian

[Jython-users] A problem encountered when trying to invoke PythonInterpreter in different threads

[huangyj1989 <hua...@16...>]

I encountered a problem when invoking a very simple python script using jython which embeded in a java application in different threads.


The jython version is 2.7.0


The PyRunner.java has the main method.


importorg.python.core.Py;
import org.python.core.PySystemState;
import org.python.util.PythonInterpreter;

public class PyRunner {

private static PythonInterpreter createPythonInterpreter(String path) {
        PySystemState state1 = new PySystemState();
state1.path.add(0, Py.newString(path));
state1.setCurrentWorkingDir(path);
        return new PythonInterpreter(null, state1);
}

public static void main(String[] args) throws InterruptedException {
        System.setProperty("python.home", "/usr/local/Cellar/jython/2.7.0/libexec");

Thread t = new Thread(() -> {
            PyRunner pyRunner = new PyRunner();
pyRunner.run();
});
t.setName("python");
t.start();
//        PyRunner pyRunner = new PyRunner();
//            pyRunner.doWork();
Thread.sleep(5000l);

}

public void run() {
        PythonInterpreter pythonInterpreter1 = createPythonInterpreter("the_path_to_my_python_script");
System.out.println("==============begin to execfile======================================");
pythonInterpreter1.execfile("Test.py");
System.out.println("==============end to execfile======================================");
}
}



The Test.py is as follows:


import ImportTest

ImportTest.testPrint('haha')
ImportTest.py is another file in the same path.


def testPrint(name):
print 'in test'



If I run the main method in PyRunner.java, I got the following error message


==============begin to execfile======================================
Exception in thread "python" Traceback (most recent call last):
  File "Test.py", line 1, in <module>
ImportError: No module named ImportTest


There are two wired thing that
1) if I run the execfile in the main thread, eg umcomment the two lines that currently commented, they will all work fine.
2) if I remove the parameter of the function testPrint, they will all work fine also.


I'm quiet new to jython, so is there anyone ever encounter such problem. Appreciate if you can reply.
Further more, I want to run code in different path in a single JVM, and for different interpreter only code in particular path can be executed. 
So using SystemState is the only way I can find to set the python path.


Best Regards,
Huang Yujie.

[Jython-users] PyDev 5.3.1 Released

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

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 Completion**

    * Substring completions are **on by default** (may be turned off in the
code-completion preferences).
    * Fixed issue with code-completion using from..import..as aliases.

* **Others**

    * Auto-fix imports with Ctrl+Shift+O properly sorts items based on the
same sorting improvements for code-completion.
    * When fixing unresolved import (with Ctrl+1) it properly resolves
dependent projects (bugfix for regression in 5.3.0).
    * **async** and **await** keywords are properly highlighted.
    * **async** blocks properly auto-indented.
    * In PEP 448 list unpack variable was not being marked as a "Load"
variable (which made the code analysis yield false positives).

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/

[Jython-users] Jython-Homepage on github? (Was: Jython use cases inside Rackspace, IBM, Oracle, Vert.x)

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

>>After that: we should look at publishing jython.org[http://jython.org] using readthedocs.org[http://readthedocs.org] or maybe github pages support. (Maybe other alternatives?) Improving our docs is probably more important than anything else we can do at this time.

The Jython-Homepage looks like it is written in sphinx/markup, isn't it? What about hosting its markup-source similar to github.com/jython/book on github? This could encourage the community to help maintaining/updating via PRs. There should be a (maybe automated) flow of nightly builds to the website, so accepted PRs would show up rapidly.
(In case of githubpages or readthedocs I'd suggest the same for whatever the page-source would consist of.)

-Stefan


P.S. Changing the subject given that already Jim's answer was not actually about use-cases. Maybe we could have a statement regarding the original question too?
 

Gesendet: Donnerstag, 27. Oktober 2016 um 13:51 Uhr
Von: "Jim Baker" <jim...@py...>
An: "Fernando Cassia" <fc...@gm...>
Cc: "jyt...@li..." <Jyt...@li...>
Betreff: Re: [Jython-users] Jython use cases inside Rackspace, IBM, Oracle, Vert.x

To address this perennial question, I expect we will be ready with the Jython 2.7.1 release candidate fairly soon. Sorry it has taken so long! There's one more bug we would like to fix, http://bugs.jython.org/issue2446[http://bugs.jython.org/issue2446] I'm at the OpenStack Summit in Barcelona this week; and I will be on vacation next week. After that, I should have time to resolve this bug and help put the RC together.
 
After that: we should look at publishing jython.org[http://jython.org] using readthedocs.org[http://readthedocs.org] or maybe github pages support. (Maybe other alternatives?) Improving our docs is probably more important than anything else we can do at this time. In parallel, 2.7.2 and 3.x work can of course continue, and we will figure timelines later.
 
- Jim
 
On Mon, Oct 24, 2016 at 7:40 AM, Fernando Cassia <fc...@gm...[mailto:fc...@gm...]> wrote:

 
On Wed, Jul 8, 2015 at 5:51 PM, Fernando Cassia <fc...@gm...[mailto:fc...@gm...]> wrote:
Anyway, is there a wiki or web server playground -like staging.jython.org[http://staging.jython.org], test.jython.org[http://test.jython.org] or something- where I could edit such list and preview it before copying it to the live web site?. I only have experience editing wikipedia articles... But even if I have to dig into HTML that shouldn't be a problem....
 
FC
I realized that I never got any answer to the above, and still there s no such list of Jython of use cases anywhere (AFAIK).
 
Sadly, I saw someone on Twitter closing a current Jython integration project with someone commenting "no company that I know of is using Jython", or words to that effect. The FUD lives on...
 
FC
--
During times of Universal Deceit, telling the truth becomes a revolutionary act
- George Orwell
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Re: [Jython-users] Jython use cases inside Rackspace, IBM, Oracle, Vert.x

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

To address this perennial question, I expect we will be ready with the
Jython 2.7.1 release candidate fairly soon. Sorry it has taken so long!
There's one more bug we would like to fix, http://bugs.jython.org/issue2446
I'm at the OpenStack Summit in Barcelona this week; and I will be on
vacation next week. After that, I should have time to resolve this bug and
help put the RC together.

After that: we should look at publishing jython.org using readthedocs.org
or maybe github pages support. (Maybe other alternatives?) Improving our
docs is probably more important than anything else we can do at this time.
In parallel, 2.7.2 and 3.x work can of course continue, and we will figure
timelines later.

- Jim

On Mon, Oct 24, 2016 at 7:40 AM, Fernando Cassia <fc...@gm...> wrote:

>
> On Wed, Jul 8, 2015 at 5:51 PM, Fernando Cassia <fc...@gm...> wrote:
>
>> Anyway, is there a wiki or web server playground -like staging.jython.org,
>> test.jython.org or something- where I could edit such list and preview
>> it before copying it to the live web site?. I only have experience editing
>> wikipedia articles... But even if I have to dig into HTML that shouldn't be
>> a problem....
>>
>> FC
>>
>
> I realized that I never got any answer to the above, and still there s no
> such list of Jython of use cases anywhere (AFAIK).
>
> Sadly, I saw someone on Twitter closing a current Jython integration
> project with someone commenting "no company that I know of is using
> Jython", or words to that effect. The FUD lives on...
>
> FC
> --
> During times of Universal Deceit, telling the truth becomes a
> revolutionary act
> - George Orwell
>
> ------------------------------------------------------------
> ------------------
> 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] Jython use cases inside Rackspace, IBM, Oracle, Vert.x

[Fernando C. <fc...@gm...>]

On Wed, Jul 8, 2015 at 5:51 PM, Fernando Cassia <fc...@gm...> wrote:

> Anyway, is there a wiki or web server playground -like staging.jython.org,
> test.jython.org or something- where I could edit such list and preview it
> before copying it to the live web site?. I only have experience editing
> wikipedia articles... But even if I have to dig into HTML that shouldn't be
> a problem....
>
> FC
>

I realized that I never got any answer to the above, and still there s no
such list of Jython of use cases anywhere (AFAIK).

Sadly, I saw someone on Twitter closing a current Jython integration
project with someone commenting "no company that I know of is using
Jython", or words to that effect. The FUD lives on...

FC
-- 
During times of Universal Deceit, telling the truth becomes a revolutionary
act
- George Orwell

[Jython-users] Using multiple interpreters vs reusing one

[Bulat Y. <bul...@gm...>]

Hi everybody!

I'm developing an application where Jython scripts would be executed once
in a while as part of executing a workflow of tasks. So the number of tasks
and the time when they execute can be random and depends on the users'
input. In any case it can happen in parallel.

The question is, should I better create a separate new engine for each
scripts, like in "new
ScriptEngineManager().getEngineByName(PYTHON_ENGINE)". Or should I instead
create the engine once globally for my application and then just call
"jythonEngine.eval(script, scriptContext)" whenever running a user's task?

Maybe creating a new engine for each execution would be much slower? Or
maybe reusing the engine could lead to some isolation problems?

Thanks in advance for your comments!

Regards,
Bulat Yaminov

[Jython-users] PyDev 5.3.0 Released

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

Release Highlights:
-------------------------------

* **Important** PyDev now requires Java 8 and Eclipse 4.5 onwards.

    * PyDev 4.5.5 is the last release supporting Java 7 and Eclipse 3.8.
    * See: update sites page for the update site of older versions of PyDev.
    * See: the **PyDev does not appear after install** section on the
download page for help on using a Java 8 vm in Eclipse.

* **Syntax validation for multiple grammars**

    * Helps to make code which is **Python 2 and 3 compatible**.
    * To customize, go to Project Properties > PyDev - Interpreter/Grammar,
and select **grammars for "additional syntax validation"**.

* **Code completion**

    * The code-completion can now do substring based matches (i.e.: the
proposals will be shown if any part of the completion matches the requested
name).
    * It's **still** not the default (to activate it, change the setting
**"Preferences > PyDev > Editor > Code Completion > Match substrings on
code completion?"** to true).
    * Completion proposals have the part of the completion used to do the
match in bold.
    * Qualifiers of the completion (i.e.: package name) are styled
differently (color may be customized in **General > Appearance > Colors and
Fonts > Basic Qualifier Information Color**).
    * Completions are re-sorted when the name used to request a code
completion changes.
    * **Sorting** is based on:

        * The current name typed (so that matches that are exact or start
with the requested token appear first).
        * The type of the completion (parameter, local, context insensitive
with auto-import, etc).
        * Where the completion was found (so, matches from the same project
go first, referenced projects second and standard library last).

    * **Ctrl and Shift Behavior when applying code-completion proposal**

        * Ctrl is always **"replace the current name with the completion"**
for all completions.
        * Pressing Ctrl to override the next name in code completion no
longer looses the highlight in the editor.
        * On code completion with auto-import, for doing local imports, the
pop-up must be focused and Shift must be kept pressed while the completion
is applied.

* **PyQt5 support in Interactive Console**

    * PyQt5 may now be used as a backend in the interactive console so that
widgets/plots can be inspected interactively while using the console.
    * May be activated with **%matplotlib qt5** (when using IPython) or in
**"Preferences > PyDev > Interactive Console > Enable GUI event loop
integration > PyQt5"**.


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] PySerial & RXTX query

[Corgi <co...@te...>]

Here's a listing to demonstrate serial port connection
with Jython and the RXTX module.
Much more needs to be done to make it a useful
program but it demonstrates the key points
to make a connection!
Hope this helps anyone just starting out on a similar project.

Graham

#Jython.py Serial Port connection with RXTX

import sys, socket, gnu.io
import gnu.io.RXTXPort as RXTX

#Open port COM3
portId=gnu.io.CommPortIdentifier.getPortIdentifier("COM3")
serialPort=portId.open("Demo1",2000)        #(Name,delay)

#Set port parameters
serialPort.setSerialPortParams(9600,RXTX.DATABITS_8,RXTX.STOPBITS_1,RXTX.PARITY_NONE)

#Open input & output streams
outStream=serialPort.getOutputStream()
inStream=serialPort.getInputStream()

#Define some output and write it to the serial port
toOutput="Test output to serial port"
outStream.write(toOutput)

#Close inStream, outStream before closing the port itself
outStream.close()
inStream.close()
serialPort.close()


----- Original Message ----- 
From: "Corgi" <co...@te...>
To: <jyt...@li...>
Sent: Monday, September 26, 2016 8:54 AM
Subject: Re: [Jython-users] PySerial & RXTX query


> Thanks, I've now sorted out how to use the RXTX module!
>
> I'll post a listing shortly.
>
> Graham
>
> ------------------------------------------------------------------------------
> _______________________________________________
> Jython-users mailing list
> Jyt...@li...
> https://lists.sourceforge.net/lists/listinfo/jython-users 

Re: [Jython-users] PySerial & RXTX query

[Corgi <co...@te...>]

Thanks, I've now sorted out how to use the RXTX module!

I'll post a listing shortly.

Graham

Re: [Jython-users] PySerial & RXTX query

[Corgi <co...@te...>]

Thanks, I've added two listings:
Python 2.7
import sys, socket, serial
ser = serial.Serial(port="COM9",baudrate=9600)
if ser.is_open:
    ser.close()
    print "Closed"
ser.open() #open port
print(ser.portstr) # confirm which port was really used
s="Test"
ser.write(s)
print "written:",s

This works fine and I can see the data being written to the port.

Jython 2.7
import sys, socket, serial, gnu.io
ser = serial.Serial(port="COM9",baudrate=9600)
if ser.is_open:
    ser.close()
    print "Closed"
ser.open() #open port
print(ser.portstr) # confirm which port was really used
s="Test"
ser.write(s)
print "written:",s

This fails with the following trace back

Traceback (most recent call last):
File "C:\jee-neon\eclipse\workspace\JythonTest\src\Jython_USB_232.py", line 
9, in <module>
ser = serial.Serial(port="COM9",baudrate=9600)
File "C:\jython2.7.0\Lib\site-packages\serial\serialutil.py", line 182, in 
__init__
self.open()
File "C:\jython2.7.0\Lib\site-packages\serial\serialjava.py", line 69, in 
open
portId = comm.CommPortIdentifier.getPortIdentifier(self._port)
at 
javax.comm.CommPortIdentifier.getPortIdentifier(CommPortIdentifier.java:105)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
javax.comm.NoSuchPortException: javax.comm.NoSuchPortException

It all seems to be to do with javax.comm and its replacement (in theory) by 
gnu.io (RXTX)
The RXTX jar is in the JRE and pythonpath and is the 64 bit version also 
installed is the serial.dll that is required.

Any help gratefully appreciated - I'm sure it's something very simple that 
I've misunderstood!

Graham


----- Original Message ----- 
From: "Adam Burke" <ada...@gm...>
To: "Corgi" <co...@te...>
Cc: <jyt...@li...>
Sent: Saturday, September 24, 2016 9:25 AM
Subject: Re: [Jython-users] PySerial & RXTX query


Hi, do you get exceptions, or can you share a simple test program?

Adam

> 在 24 Sep 2016，4:15 PM，Corgi <co...@te...> 写道：
>
> I have had no success with opening a serial port (device is a Prolific USB
> to serial comm port [COM9]) from Jython (2.7) using PySerial (tried both 
> 2.7
> and 3.1.1) and the RXTX replacement for javax.comm on windows 64 bit.  I
> have tried the usual googling for examples but found no really helpful
> jython specific ones.  If anyone has an example program that works, I 
> should
> be really grateful to see it!
>
> It all works fine in Python 2.7 !
>
> Thanks in advance,
>
> Graham
>
> (Apologies if this is posted twice)
>
>
> ------------------------------------------------------------------------------
> _______________________________________________
> Jython-users mailing list
> Jyt...@li...
> https://lists.sourceforge.net/lists/listinfo/jython-users