Nabble - jython-users

Re: how to catch dispose events of swing widgets

2009-11-09T07:43:51Z

Fabrizio Pollastri kirjoitti:

> Alex Grönholm wrote:
>
>> Fabrizio Pollastri kirjoitti:
>>
>>> Alex Grönholm wrote:
>>>
>>>> Fabrizio Pollastri kirjoitti:
>>>>
>>>>> Hi all,
>>>>> when the gui of my application is closed or when the application
>>>>> destroys (intentionally) part of the gui, I need to catch this event
>>>>> for each involved widget. Any suggestion is welcome. Thanks in advance.
>>>>>
>>>>>
>>>>>
>>>> What for? Also, I don't think any dispose events are sent, but you
>>>> can catch events generated from removing those widgets from their
>>>> parent container.
>>>> Would that be good enough?
>>>>
>>> I have tried this:
>>>
>>> widget.addContainerListener(ContainerListener(my_destroy_manager_function))
>>>
>>> ....
>>> class ContainerListener(awt.event.ContainerListener):
>>> "Call my widget destroy handler"
>>>
>>> def __init__(self,my_destroy_manager):
>>> self.my_destroy_manager = my_destroy_manager
>>>
>>> def componentRemoved(self,*args):
>>> self.my_destroy_manager()
>>>
>>> But nor the closing by mouse clicking, nor the widget dispose method
>>> trigger my_destroy_manager function.
>>>
>>>
>> Because in neither case is your component actually removed from its
>> parent container. Please explain why you need to do this in the first
>> place so we may help you.
>>
>
> I am porting AVC (http://avc.inrim.it) to java swing using jython.
>
> In brief, AVC is a python module that connects values displayed by
> widgets to values held by application variables. The connection is done
> automatically matching names assigned to widgets with variable names.
>

Sounds just like what I've been doing with the binding module in
jython-swingutils (http://bitbucket.org/agronholm/jython-swingutils/).
Why don't you take a look and see if it's anything like AVC?
> When a widget controlled by AVC is destroyed, AVC needs to remove it
> from its internal data structures. So I am looking for the right signal
> to do this when I close the main window or the program delete same
> widgets from the gui.
>
It is relatively rare for widgets to actually get removed from their
parent container in Swing applications. Are these internal data
structures persistent? If not, I see no point in removing the variables
from them on application exit. If they are, you could just listen for
the parent window's windowClosed event.

> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> trial. Simplify your report design, integration and deployment - and focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now. http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Jython-users mailing list
> Jython-users@...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

Re: how to catch dispose events of swing widgets

2009-11-09T07:18:44Z

Alex Grönholm wrote:

> Fabrizio Pollastri kirjoitti:
>> Alex Grönholm wrote:
>>> Fabrizio Pollastri kirjoitti:
>>>> Hi all,
>>>> when the gui of my application is closed or when the application
>>>> destroys (intentionally) part of the gui, I need to catch this event
>>>> for each involved widget. Any suggestion is welcome. Thanks in advance.
>>>>
>>>>
>>> What for? Also, I don't think any dispose events are sent, but you
>>> can catch events generated from removing those widgets from their
>>> parent container.
>>> Would that be good enough?
>> I have tried this:
>>
>> widget.addContainerListener(ContainerListener(my_destroy_manager_function))
>>
>> ....
>> class ContainerListener(awt.event.ContainerListener):
>> "Call my widget destroy handler"
>>
>> def __init__(self,my_destroy_manager):
>> self.my_destroy_manager = my_destroy_manager
>>
>> def componentRemoved(self,*args):
>> self.my_destroy_manager()
>>
>> But nor the closing by mouse clicking, nor the widget dispose method
>> trigger my_destroy_manager function.
>>
> Because in neither case is your component actually removed from its
> parent container. Please explain why you need to do this in the first
> place so we may help you.

I am porting AVC (http://avc.inrim.it) to java swing using jython.

In brief, AVC is a python module that connects values displayed by
widgets to values held by application variables. The connection is done
automatically matching names assigned to widgets with variable names.

When a widget controlled by AVC is destroyed, AVC needs to remove it
from its internal data structures. So I am looking for the right signal
to do this when I close the main window or the program delete same
widgets from the gui.

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

Re: how to catch dispose events of swing widgets

2009-11-09T06:59:49Z

Fabrizio Pollastri kirjoitti:

> Alex Grönholm wrote:
>> Fabrizio Pollastri kirjoitti:
>>> Hi all,
>>> when the gui of my application is closed or when the application
>>> destroys (intentionally) part of the gui, I need to catch this event
>>> for each involved widget. Any suggestion is welcome. Thanks in advance.
>>>
>>>
>> What for? Also, I don't think any dispose events are sent, but you
>> can catch events generated from removing those widgets from their
>> parent container.
>> Would that be good enough?
>
> I have tried this:
>
> widget.addContainerListener(ContainerListener(my_destroy_manager_function))
>
> ....
> class ContainerListener(awt.event.ContainerListener):
> "Call my widget destroy handler"
>
> def __init__(self,my_destroy_manager):
> self.my_destroy_manager = my_destroy_manager
>
> def componentRemoved(self,*args):
> self.my_destroy_manager()
>
> But nor the closing by mouse clicking, nor the widget dispose method
> trigger my_destroy_manager function.
>

Because in neither case is your component actually removed from its
parent container. Please explain why you need to do this in the first
place so we may help you.

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

Re: how to catch dispose events of swing widgets

2009-11-09T06:11:57Z

Fabrizio Pollastri kirjoitti:
> Hi all,
> when the gui of my application is closed or when the application
> destroys (intentionally) part of the gui, I need to catch this event for
> each involved widget. Any suggestion is welcome. Thanks in advance.
>
>
What for? Also, I don't think any dispose events are sent, but you can
catch events generated from removing those widgets from their parent
container.
Would that be good enough?

> Fabrizio Pollastri
>
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> trial. Simplify your report design, integration and deployment - and focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now. http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Jython-users mailing list
> Jython-users@...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>

how to catch dispose events of swing widgets

2009-11-09T06:01:44Z

Hi all,
when the gui of my application is closed or when the application
destroys (intentionally) part of the gui, I need to catch this event for
each involved widget. Any suggestion is welcome. Thanks in advance.

Fabrizio Pollastri

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

Re: pwd module on Windows

2009-11-08T23:50:31Z

hi john,

--- code-snippet ---
from java.lang import System

for pname in System.getProperties():
print('%s=%s' % (pname, System.getProperty(pname)))

--- /code-snippet ---

look at properties such as:
os.name
os.arch

and some others.

regards,
daniel

2009/11/2 <john.m.baker@...>

And now I’m looking about for a solution, where by I need to check the operating system (I have other requirements to avoid running code that is platform specific – it makes calls to rsync etc.!), platform.system() returns ‘Java’, so it’s difficult to tell what is the underlying operating system.

Any thoughts?

From: Baker, John (IT/UK)
Sent: 02 November 2009 09:35
To: jython-users@...
Subject: [Jython-users] pwd module on Windows

Hi,

What’s the best way to cope with these errors:

ImportError: pwd module not supported on Windows

If it’s not supported, what should I do to do something like this:

currentuser= pwd.getpwuid(os.geteuid())[0]

I appreciate this isn’t really Jython specific, but I suspect someone has some thoughts on writing cross OS Python!

Thanks,

John

This e-mail (including any attachments) is confidential, may contain

proprietary or privileged information and is intended for the named

recipient(s) only. Unintended recipients are prohibited from taking action

on the basis of information in this e-mail and must delete all copies.

Nomura will not accept responsibility or liability for the accuracy or

completeness of, or the presence of any virus or disabling code in, this

e-mail. If verification is sought please request a hard copy. Any reference

to the terms of executed transactions should be treated as preliminary only

and subject to formal written confirmation by Nomura. Nomura reserves the

right to monitor e-mail communications through its networks (in accordance

with applicable laws). No confidentiality or privilege is waived or lost by

Nomura by any mistransmission of this e-mail. Any reference to "Nomura" is

a reference to any entity in the Nomura Holdings, Inc. group. Please read

our Electronic Communications Legal Notice which forms part of this e-mail:

http://www.Nomura.com/email_disclaimer.htm

------------------------------------------------------------------------------
Come build with us! The BlackBerry(R) Developer Conference in SF, CA
is the only developer event you need to attend this year. Jumpstart your
developing skills, take BlackBerry mobile applications to market and stay
ahead of the curve. Join us from November 9 - 12, 2009. Register now!
http://p.sf.net/sfu/devconference
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

--
Daniel Baktiar - JEEwish & Pythoneer
(http://dbaktiar.wordpress.com)

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

Re: Cleaning up PythonInterpreter object

2009-11-08T02:39:49Z

looping through the script locals and setting them to null seems to work for me

e.g.
List<String> scriptLocals = new ArrayList<String>();
PyObject locals = interp.getLocals();
for (PyObject item : locals.__iter__().asIterable()) {
scriptLocals.add(item.toString());
}
for (String string : scriptLocals) {
interp.set(string, null);
}

this is the simplified version, you would probably need to ignore "__name__" and "__doc__"

Joonas Pulakka wrote:

Hello,

I've been told that creating a PythonInterpreter object is relatively
expensive, and therefore it makes sense to cache/reuse it somehow. However,
I'm having difficulties to "reset" the interpreter to its initial state. By
resetting I mean clearing all previous variables, functions and class
definitions. I thought interp.cleanup() would do something like that, but it
doesn't seem to have any effect.

Is there a way to "reset" the interpreter, or should I just recreate it?

Best Regards,
Joonas

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Jython-users mailing list
Jython-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/jython-users

Re: Cleaning up PythonInterpreter object

2009-11-07T22:20:31Z

Actually I was working with exactly the object factory section that you mention. However, I think these examples are not quite production-quality code:

* http://jythonpodcast.hostjava.net/jythonbook/chapter10.html#one-to-one-jython-object-factories forces to recreate PythonInterpreter each time a new type of Jython->Java object is needed. The factory can only be reused for building several objects of same type.

* http://jythonpodcast.hostjava.net/jythonbook/chapter10.html#making-use-of-a-loosely-coupled-object-factory : The upper listing recreates PythonInterpreter each time a new Jython->Java object is needed - it's doesn't even reuse the interpreter for same types of objects (like the previous example does). The lower one (that uses PySystemState) contains the descriptive comment: "// likely want to reuse PySystemState in some clever fashion since expensive to setup..."

So from the doc it seems that nobody has really figured out how to actually implement this reuse thing. Anyway, thanks for pointing out PlyJy in the other mail, I'll have a look at it.

Best,
Joonas

2009/11/8 Josh Juneau <juneau001@...>

It seems that the only way to really "reset" the interpreter would be to recreate it as you mention. I do agree with you that cleanup() seems that it should do the trick...but instead does nothing notable.

Can we ask what you are doing with the interpreter? Are object factories (http://jythonpodcast.hostjava.net/jythonbook/chapter10.html#object-factories) a solution that may work for you? If so, they are quite easy to use and there is a PySystemState object factory that performs fairly well. This may be something for you to look into. You may also want to take a look at using JSR-223 as it may do the trick for you.

Best

Josh Juneau
juneau001@...
http://jj-blogger.blogspot.com
Twitter ID: javajuneau

On Fri, Nov 6, 2009 at 6:48 AM, Joonas Pulakka <joonas.pulakka@...> wrote:

Hello,

I've been told that creating a PythonInterpreter object is relatively expensive, and therefore it makes sense to cache/reuse it somehow. However, I'm having difficulties to "reset" the interpreter to its initial state. By resetting I mean clearing all previous variables, functions and class definitions. I thought interp.cleanup() would do something like that, but it doesn't seem to have any effect.

Is there a way to "reset" the interpreter, or should I just recreate it?

Best Regards,
Joonas

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

Re: Cleaning up PythonInterpreter object

2009-11-07T20:58:46Z

It seems that the only way to really "reset" the interpreter would be to recreate it as you mention. I do agree with you that cleanup() seems that it should do the trick...but instead does nothing notable.

Can we ask what you are doing with the interpreter? Are object factories (http://jythonpodcast.hostjava.net/jythonbook/chapter10.html#object-factories) a solution that may work for you? If so, they are quite easy to use and there is a PySystemState object factory that performs fairly well. This may be something for you to look into. You may also want to take a look at using JSR-223 as it may do the trick for you.

Best

Josh Juneau
juneau001@...
http://jj-blogger.blogspot.com
Twitter ID: javajuneau

On Fri, Nov 6, 2009 at 6:48 AM, Joonas Pulakka <joonas.pulakka@...> wrote:

Hello,

I've been told that creating a PythonInterpreter object is relatively expensive, and therefore it makes sense to cache/reuse it somehow. However, I'm having difficulties to "reset" the interpreter to its initial state. By resetting I mean clearing all previous variables, functions and class definitions. I thought interp.cleanup() would do something like that, but it doesn't seem to have any effect.

Is there a way to "reset" the interpreter, or should I just recreate it?

Best Regards,
Joonas

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

Re: Invoking a function on a module

2009-11-07T20:38:23Z

I also just updated the PythonInterpreter section of the book and sent to Apress. I will be updating the online book at some point in the not too distant future. For now, here is a table that I put together that describes all of the different methods available for use with the PythonInterpreter. Perhaps it will help you out a bit with the PythonInterpreter. However, I agree with Jim that object factories are the best way to go. Check out the PlyJy (http://kenai.com/projects/plyjy) project for some working examples.

Here is that table (unformatted and ugly):

PythonInterpreter Methods

Method Description

setIn(PyObject) Set the Python object to use for the standard input stream

setIn(java.io.Reader) Set a java.io.Reader to use for the standard input stream

setIn(java.io.InputStream) Set a java.io.InputStream to use for the standard input stream

setOut(PyObject) Set the Python object to use for the standard output stream

setOut(java.io.Writer) Set the java.io.Writer to use for the standard output stream

setOut(java,io.OutputStream) Set the java.io.OutputStream to use for the standard output stream

setErr(PyObject) Set a Python error object to use for the standard error stream

setErr(java.io.Writer Set a java.io.Writer to use for the standard error stream

setErr(java.io.OutputStream) Set a java.io.OutputStream to use for the standard error stream

eval(String) Evaluate a string as Python source and return the result

eval(PyObject) Evaluate a Python code object and return the result

exec(String) Execute a string of Python source in the local namespace

exec(PyObject) Execute a Python code object in the local namespace

execfile(String filename) Execute a file of Python source in the local namespace

execfile(java.io.InputStream) Execute an input stream of Python source in the local namespace

compile(String) Compile a string of Python source as an expression or module

compile(script, filename) Compile a script of Python source as an expression or module

set(String name, Object value) Set a variable of Object type in the local namespace

set(String name, PyObject value) Set a varuable of PyObject type in the local namespace

get(String) Get the value of a variable in the local namespace

get(String name, Class<T> javaclass Get the value of a variable in the local namespace. The value will be returned as an instance of the given Java class.

Hope this helps.

Josh Juneau
juneau001@...
http://jj-blogger.blogspot.com
Twitter ID: javajuneau

2009/11/6 Alex Grönholm <alex.gronholm@...>

john.m.baker@... kirjoitti:

> Great, thanks. Why can't I do:
>
> interp.exec("import mypackage.mymodule")
> PythonObject f= interp.get("mypackage.mymodule.mymethod");
>
> f is null?
>

Try interp.eval()

>
>> -----Original Message-----
>> From: Jeff Emanuel [mailto:jemanuel@...]
>> Sent: 05 November 2009 21:55
>> To: Baker, John (IT/UK)
>> Cc: jython-users@...
>> Subject: Re: [Jython-users] Invoking a function on a module
>>
>>
>>
>> interp.exec("from mypackage.mymodule import mymethod");
>> PyObject f = interp.get('mymethod');
>> PyObject result = f.__call__(new PyString("a"),new PyInteger(123));
>>
>>
>>
>>
>> john.m.baker@... wrote:
>>
>>> Hi,
>>>
>>> If I want to do:
>>>
>>> Import mypackage.mymodule
>>> Mypackage.mymodule.mymethod('a', 123)
>>>
>>> Then how do I do it like this:
>>>
>>> PyModule module = ... ?
>>> PyObject result = module.invoke("mymethod",
>>> new PyObject[] {
>>> new PyString('a'),
>>> new PyInteger(123)
>>> }
>>> )
>>>
>>> I don't know how to get a reference to module - the reason I ask is
>>>
>> I'd like to implement this slightly more strictly than running
>> PythonInterpreter.exec for each method call.
>>
>>> Thanks,
>>>
>>>
>>> john
>>>
>>>
>>>
>>>> -----Original Message-----
>>>> From: Alex Grönholm [mailto:alex.gronholm@...]
>>>> Sent: 04 November 2009 17:27
>>>> To: jython-users@...
>>>> Subject: Re: [Jython-users] Invoking a function on a module
>>>>
>>>> john.m.baker@... kirjoitti:
>>>>
>>>>
>>>>> Hello,
>>>>>
>>>>> I've looked at the Python API docs but feel that a few common
>>>>>
>>>>>
>>>> examples
>>>>
>>>>
>>>>> would be of use. For example, I can pass a String to
>>>>>
>>>>>
>>>> PythonInterpreter
>>>>
>>>>
>>>>> and execute it, but how can I invoke the method 'test' on the
>>>>>
>> module
>>
>>>>> 'mymodule.py', which is in the classpath? Or even better, if my
>>>>> classpath contains a directory 'mypackage', and the module lives
>>>>> inside it, how do I do:
>>>>>
>>>>> import mypackage.mymodule
>>>>>
>>>>> mypackage.mymodule.test('params')
>>>>>
>>>>> through the Python API?
>>>>>
>>>>>
>>>>>
>>>> Just exec() those statements one after another. Shouldn't be that
>>>> difficult to figure out :)
>>>>
>>>>
>>>>> Thanks,
>>>>>
>>>>>
>>>>> John
>>>>>
>>>>>
>>>>>
>>>>> This e-mail (including any attachments) is confidential, may
>>>>>
>> contain
>>
>>>>> proprietary or privileged information and is intended for the named
>>>>> recipient(s) only. Unintended recipients are prohibited from taking
>>>>> action
>>>>> on the basis of information in this e-mail and must delete all
>>>>>
>> copies.
>>
>>>>> Nomura will not accept responsibility or liability for the accuracy
>>>>>
>>>>>
>>>> or
>>>>
>>>>
>>>>> completeness of, or the presence of any virus or disabling code in,
>>>>>
>>>>>
>>>> this
>>>>
>>>>
>>>>> e-mail. If verification is sought please request a hard copy. Any
>>>>> reference
>>>>> to the terms of executed transactions should be treated as
>>>>>
>>>>>
>>>> preliminary
>>>>
>>>>
>>>>> only
>>>>> and subject to formal written confirmation by Nomura. Nomura
>>>>>
>> reserves
>>
>>>> the
>>>>
>>>>
>>>>> right to monitor e-mail communications through its networks (in
>>>>> accordance
>>>>> with applicable laws). No confidentiality or privilege is waived or
>>>>> lost by
>>>>> Nomura by any mistransmission of this e-mail. Any reference to
>>>>> "Nomura" is
>>>>> a reference to any entity in the Nomura Holdings, Inc. group.
>>>>>
>> Please
>>
>>>> read
>>>>
>>>>
>>>>> our Electronic Communications Legal Notice which forms part of this
>>>>> e-mail:
>>>>> http://www.Nomura.com/email_disclaimer.htm
>>>>> -------------------------------------------------------------------
>>>>>
>> --
>>
>>>> ---
>>>>
>>>>
>>>>> -------------------------------------------------------------------
>>>>>
>> --
>>
>>>> ---------
>>>>
>>>>
>>>>> Let Crystal Reports handle the reporting - Free Crystal Reports
>>>>>
>> 2008
>>
>>>> 30-Day
>>>>
>>>>
>>>>> trial. Simplify your report design, integration and deployment -
>>>>>
>> and
>>
>>>> focus on
>>>>
>>>>
>>>>> what you do best, core application coding. Discover what's new with
>>>>> Crystal Reports now. http://p.sf.net/sfu/bobj-july
>>>>> -------------------------------------------------------------------
>>>>>
>> --
>>
>>>> ---
>>>>
>>>>
>>>>> _______________________________________________
>>>>> Jython-users mailing list
>>>>> Jython-users@...
>>>>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>>>>
>>>>>
>>>>>
>>>> --------------------------------------------------------------------
>>>>
>> ---
>>
>>>> -------
>>>> Let Crystal Reports handle the reporting - Free Crystal Reports 2008
>>>> 30-Day
>>>> trial. Simplify your report design, integration and deployment - and
>>>> focus on
>>>> what you do best, core application coding. Discover what's new with
>>>> Crystal Reports now. http://p.sf.net/sfu/bobj-july
>>>> _______________________________________________
>>>> Jython-users mailing list
>>>> Jython-users@...
>>>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>>>
>>>>
>>>
>>> This e-mail (including any attachments) is confidential, may contain
>>> proprietary or privileged information and is intended for the named
>>> recipient(s) only. Unintended recipients are prohibited from taking
>>>
>> action
>>
>>> on the basis of information in this e-mail and must delete all copies.
>>> Nomura will not accept responsibility or liability for the accuracy
>>>
>> or
>>
>>> completeness of, or the presence of any virus or disabling code in,
>>>
>> this
>>
>>> e-mail. If verification is sought please request a hard copy. Any
>>>
>> reference
>>
>>> to the terms of executed transactions should be treated as
>>>
>> preliminary only
>>
>>> and subject to formal written confirmation by Nomura. Nomura reserves
>>>
>> the
>>
>>> right to monitor e-mail communications through its networks (in
>>>
>> accordance
>>
>>> with applicable laws). No confidentiality or privilege is waived or
>>>
>> lost by
>>
>>> Nomura by any mistransmission of this e-mail. Any reference to
>>>
>> "Nomura" is
>>
>>> a reference to any entity in the Nomura Holdings, Inc. group. Please
>>>
>> read
>>
>>> our Electronic Communications Legal Notice which forms part of this
>>>
>> e-mail:
>>
>>> http://www.Nomura.com/email_disclaimer.htm
>>>
>>>
>>> ---------------------------------------------------------------------
>>>
>> ---------
>>
>>> Let Crystal Reports handle the reporting - Free Crystal Reports 2008
>>>
>> 30-Day
>>
>>> trial. Simplify your report design, integration and deployment - and
>>>
>> focus on
>>
>>> what you do best, core application coding. Discover what's new with
>>> Crystal Reports now. http://p.sf.net/sfu/bobj-july
>>> _______________________________________________
>>> Jython-users mailing list
>>> Jython-users@...
>>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>>
>>>
>
>
>
> This e-mail (including any attachments) is confidential, may contain
> proprietary or privileged information and is intended for the named
> recipient(s) only. Unintended recipients are prohibited from taking action
> on the basis of information in this e-mail and must delete all copies.
> Nomura will not accept responsibility or liability for the accuracy or
> completeness of, or the presence of any virus or disabling code in, this
> e-mail. If verification is sought please request a hard copy. Any reference
> to the terms of executed transactions should be treated as preliminary only
> and subject to formal written confirmation by Nomura. Nomura reserves the
> right to monitor e-mail communications through its networks (in accordance
> with applicable laws). No confidentiality or privilege is waived or lost by
> Nomura by any mistransmission of this e-mail. Any reference to "Nomura" is
> a reference to any entity in the Nomura Holdings, Inc. group. Please read
> our Electronic Communications Legal Notice which forms part of this e-mail:
> http://www.Nomura.com/email_disclaimer.htm
>
>
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> trial. Simplify your report design, integration and deployment - and focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now. http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Jython-users mailing list
> Jython-users@...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>

------------------------------------------------------------------------------

Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

Cleaning up PythonInterpreter object

2009-11-06T04:48:31Z

Hello,

I've been told that creating a PythonInterpreter object is relatively expensive, and therefore it makes sense to cache/reuse it somehow. However, I'm having difficulties to "reset" the interpreter to its initial state. By resetting I mean clearing all previous variables, functions and class definitions. I thought interp.cleanup() would do something like that, but it doesn't seem to have any effect.

Is there a way to "reset" the interpreter, or should I just recreate it?

Best Regards,

Joonas

Re: Invoking a function on a module

2009-11-06T02:48:11Z

john.m.baker@... kirjoitti:
> Great, thanks. Why can't I do:
>
> interp.exec("import mypackage.mymodule")
> PythonObject f= interp.get("mypackage.mymodule.mymethod");
>
> f is null?
>
Try interp.eval()

>
>> -----Original Message-----
>> From: Jeff Emanuel [mailto:jemanuel@...]
>> Sent: 05 November 2009 21:55
>> To: Baker, John (IT/UK)
>> Cc: jython-users@...
>> Subject: Re: [Jython-users] Invoking a function on a module
>>
>>
>>
>> interp.exec("from mypackage.mymodule import mymethod");
>> PyObject f = interp.get('mymethod');
>> PyObject result = f.__call__(new PyString("a"),new PyInteger(123));
>>
>>
>>
>>
>> john.m.baker@... wrote:
>>
>>> Hi,
>>>
>>> If I want to do:
>>>
>>> Import mypackage.mymodule
>>> Mypackage.mymodule.mymethod('a', 123)
>>>
>>> Then how do I do it like this:
>>>
>>> PyModule module = ... ?
>>> PyObject result = module.invoke("mymethod",
>>> new PyObject[] {
>>> new PyString('a'),
>>> new PyInteger(123)
>>> }
>>> )
>>>
>>> I don't know how to get a reference to module - the reason I ask is
>>>
>> I'd like to implement this slightly more strictly than running
>> PythonInterpreter.exec for each method call.
>>
>>> Thanks,
>>>
>>>
>>> john
>>>
>>>
>>>
>>>> -----Original Message-----
>>>> From: Alex Grönholm [mailto:alex.gronholm@...]
>>>> Sent: 04 November 2009 17:27
>>>> To: jython-users@...
>>>> Subject: Re: [Jython-users] Invoking a function on a module
>>>>
>>>> john.m.baker@... kirjoitti:
>>>>
>>>>
>>>>> Hello,
>>>>>
>>>>> I've looked at the Python API docs but feel that a few common
>>>>>
>>>>>
>>>> examples
>>>>
>>>>
>>>>> would be of use. For example, I can pass a String to
>>>>>
>>>>>
>>>> PythonInterpreter
>>>>
>>>>
>>>>> and execute it, but how can I invoke the method 'test' on the
>>>>>
>> module
>>
>>>>> 'mymodule.py', which is in the classpath? Or even better, if my
>>>>> classpath contains a directory 'mypackage', and the module lives
>>>>> inside it, how do I do:
>>>>>
>>>>> import mypackage.mymodule
>>>>>
>>>>> mypackage.mymodule.test('params')
>>>>>
>>>>> through the Python API?
>>>>>
>>>>>
>>>>>
>>>> Just exec() those statements one after another. Shouldn't be that
>>>> difficult to figure out :)
>>>>
>>>>
>>>>> Thanks,
>>>>>
>>>>>
>>>>> John
>>>>>
>>>>>
>>>>>
>>>>> This e-mail (including any attachments) is confidential, may
>>>>>
>> contain
>>
>>>>> proprietary or privileged information and is intended for the named
>>>>> recipient(s) only. Unintended recipients are prohibited from taking
>>>>> action
>>>>> on the basis of information in this e-mail and must delete all
>>>>>
>> copies.
>>
>>>>> Nomura will not accept responsibility or liability for the accuracy
>>>>>
>>>>>
>>>> or
>>>>
>>>>
>>>>> completeness of, or the presence of any virus or disabling code in,
>>>>>
>>>>>
>>>> this
>>>>
>>>>
>>>>> e-mail. If verification is sought please request a hard copy. Any
>>>>> reference
>>>>> to the terms of executed transactions should be treated as
>>>>>
>>>>>
>>>> preliminary
>>>>
>>>>
>>>>> only
>>>>> and subject to formal written confirmation by Nomura. Nomura
>>>>>
>> reserves
>>
>>>> the
>>>>
>>>>
>>>>> right to monitor e-mail communications through its networks (in
>>>>> accordance
>>>>> with applicable laws). No confidentiality or privilege is waived or
>>>>> lost by
>>>>> Nomura by any mistransmission of this e-mail. Any reference to
>>>>> "Nomura" is
>>>>> a reference to any entity in the Nomura Holdings, Inc. group.
>>>>>
>> Please
>>
>>>> read
>>>>
>>>>
>>>>> our Electronic Communications Legal Notice which forms part of this
>>>>> e-mail:
>>>>> http://www.Nomura.com/email_disclaimer.htm
>>>>> -------------------------------------------------------------------
>>>>>
>> --
>>
>>>> ---
>>>>
>>>>
>>>>> -------------------------------------------------------------------
>>>>>
>> --
>>
>>>> ---------
>>>>
>>>>
>>>>> Let Crystal Reports handle the reporting - Free Crystal Reports
>>>>>
>> 2008
>>
>>>> 30-Day
>>>>
>>>>
>>>>> trial. Simplify your report design, integration and deployment -
>>>>>
>> and
>>
>>>> focus on
>>>>
>>>>
>>>>> what you do best, core application coding. Discover what's new with
>>>>> Crystal Reports now. http://p.sf.net/sfu/bobj-july
>>>>> -------------------------------------------------------------------
>>>>>
>> --
>>
>>>> ---
>>>>
>>>>
>>>>> _______________________________________________
>>>>> Jython-users mailing list
>>>>> Jython-users@...
>>>>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>>>>
>>>>>
>>>>>
>>>> --------------------------------------------------------------------
>>>>
>> ---
>>
>>>> -------
>>>> Let Crystal Reports handle the reporting - Free Crystal Reports 2008
>>>> 30-Day
>>>> trial. Simplify your report design, integration and deployment - and
>>>> focus on
>>>> what you do best, core application coding. Discover what's new with
>>>> Crystal Reports now. http://p.sf.net/sfu/bobj-july
>>>> _______________________________________________
>>>> Jython-users mailing list
>>>> Jython-users@...
>>>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>>>
>>>>
>>>
>>> This e-mail (including any attachments) is confidential, may contain
>>> proprietary or privileged information and is intended for the named
>>> recipient(s) only. Unintended recipients are prohibited from taking
>>>
>> action
>>
>>> on the basis of information in this e-mail and must delete all copies.
>>> Nomura will not accept responsibility or liability for the accuracy
>>>
>> or
>>
>>> completeness of, or the presence of any virus or disabling code in,
>>>
>> this
>>
>>> e-mail. If verification is sought please request a hard copy. Any
>>>
>> reference
>>
>>> to the terms of executed transactions should be treated as
>>>
>> preliminary only
>>
>>> and subject to formal written confirmation by Nomura. Nomura reserves
>>>
>> the
>>
>>> right to monitor e-mail communications through its networks (in
>>>
>> accordance
>>
>>> with applicable laws). No confidentiality or privilege is waived or
>>>
>> lost by
>>
>>> Nomura by any mistransmission of this e-mail. Any reference to
>>>
>> "Nomura" is
>>
>>> a reference to any entity in the Nomura Holdings, Inc. group. Please
>>>
>> read
>>
>>> our Electronic Communications Legal Notice which forms part of this
>>>
>> e-mail:
>>
>>> http://www.Nomura.com/email_disclaimer.htm
>>>
>>>
>>> ---------------------------------------------------------------------
>>>
>> ---------
>>
>>> Let Crystal Reports handle the reporting - Free Crystal Reports 2008
>>>
>> 30-Day
>>
>>> trial. Simplify your report design, integration and deployment - and
>>>
>> focus on
>>
>>> what you do best, core application coding. Discover what's new with
>>> Crystal Reports now. http://p.sf.net/sfu/bobj-july
>>> _______________________________________________
>>> Jython-users mailing list
>>> Jython-users@...
>>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>>
>>>
>
>
>
> This e-mail (including any attachments) is confidential, may contain
> proprietary or privileged information and is intended for the named
> recipient(s) only. Unintended recipients are prohibited from taking action
> on the basis of information in this e-mail and must delete all copies.
> Nomura will not accept responsibility or liability for the accuracy or
> completeness of, or the presence of any virus or disabling code in, this
> e-mail. If verification is sought please request a hard copy. Any reference
> to the terms of executed transactions should be treated as preliminary only
> and subject to formal written confirmation by Nomura. Nomura reserves the
> right to monitor e-mail communications through its networks (in accordance
> with applicable laws). No confidentiality or privilege is waived or lost by
> Nomura by any mistransmission of this e-mail. Any reference to "Nomura" is
> a reference to any entity in the Nomura Holdings, Inc. group. Please read
> our Electronic Communications Legal Notice which forms part of this e-mail:
> http://www.Nomura.com/email_disclaimer.htm
>
>
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> trial. Simplify your report design, integration and deployment - and focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now. http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Jython-users mailing list
> Jython-users@...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>

Re: Invoking a function on a module

2009-11-06T00:45:09Z

Great, thanks. Why can't I do:

interp.exec("import mypackage.mymodule")
PythonObject f= interp.get("mypackage.mymodule.mymethod");

f is null?

> -----Original Message-----
> From: Jeff Emanuel [mailto:jemanuel@...]
> Sent: 05 November 2009 21:55
> To: Baker, John (IT/UK)
> Cc: jython-users@...
> Subject: Re: [Jython-users] Invoking a function on a module
>
>
>
> interp.exec("from mypackage.mymodule import mymethod");
> PyObject f = interp.get('mymethod');
> PyObject result = f.__call__(new PyString("a"),new PyInteger(123));
>
>
>
>
> john.m.baker@... wrote:
> > Hi,
> >
> > If I want to do:
> >
> > Import mypackage.mymodule
> > Mypackage.mymodule.mymethod('a', 123)
> >
> > Then how do I do it like this:
> >
> > PyModule module = ... ?
> > PyObject result = module.invoke("mymethod",
> > new PyObject[] {
> > new PyString('a'),
> > new PyInteger(123)
> > }
> > )
> >
> > I don't know how to get a reference to module - the reason I ask is
> I'd like to implement this slightly more strictly than running
> PythonInterpreter.exec for each method call.
> >
> > Thanks,
> >
> >
> > john
> >
> >
> >> -----Original Message-----
> >> From: Alex Grönholm [mailto:alex.gronholm@...]
> >> Sent: 04 November 2009 17:27
> >> To: jython-users@...
> >> Subject: Re: [Jython-users] Invoking a function on a module
> >>
> >> john.m.baker@... kirjoitti:
> >>
> >>> Hello,
> >>>
> >>> I've looked at the Python API docs but feel that a few common
> >>>
> >> examples
> >>
> >>> would be of use. For example, I can pass a String to
> >>>
> >> PythonInterpreter
> >>
> >>> and execute it, but how can I invoke the method 'test' on the
> module
> >>> 'mymodule.py', which is in the classpath? Or even better, if my
> >>> classpath contains a directory 'mypackage', and the module lives
> >>> inside it, how do I do:
> >>>
> >>> import mypackage.mymodule
> >>>
> >>> mypackage.mymodule.test('params')
> >>>
> >>> through the Python API?
> >>>
> >>>
> >> Just exec() those statements one after another. Shouldn't be that
> >> difficult to figure out :)
> >>
> >>> Thanks,
> >>>
> >>>
> >>> John
> >>>
> >>>
> >>>
> >>> This e-mail (including any attachments) is confidential, may
> contain
> >>> proprietary or privileged information and is intended for the named
> >>> recipient(s) only. Unintended recipients are prohibited from taking
> >>> action
> >>> on the basis of information in this e-mail and must delete all
> copies.
> >>> Nomura will not accept responsibility or liability for the accuracy
> >>>
> >> or
> >>
> >>> completeness of, or the presence of any virus or disabling code in,
> >>>
> >> this
> >>
> >>> e-mail. If verification is sought please request a hard copy. Any
> >>> reference
> >>> to the terms of executed transactions should be treated as
> >>>
> >> preliminary
> >>
> >>> only
> >>> and subject to formal written confirmation by Nomura. Nomura
> reserves
> >>>
> >> the
> >>
> >>> right to monitor e-mail communications through its networks (in
> >>> accordance
> >>> with applicable laws). No confidentiality or privilege is waived or
> >>> lost by
> >>> Nomura by any mistransmission of this e-mail. Any reference to
> >>> "Nomura" is
> >>> a reference to any entity in the Nomura Holdings, Inc. group.
> Please
> >>>
> >> read
> >>
> >>> our Electronic Communications Legal Notice which forms part of this
> >>> e-mail:
> >>> http://www.Nomura.com/email_disclaimer.htm
> >>> -------------------------------------------------------------------
> --
> >>>
> >> ---
> >>
> >>> -------------------------------------------------------------------
> --
> >>>
> >> ---------
> >>
> >>> Let Crystal Reports handle the reporting - Free Crystal Reports
> 2008
> >>>
> >> 30-Day
> >>
> >>> trial. Simplify your report design, integration and deployment -
> and
> >>>
> >> focus on
> >>
> >>> what you do best, core application coding. Discover what's new with
> >>> Crystal Reports now. http://p.sf.net/sfu/bobj-july
> >>> -------------------------------------------------------------------
> --
> >>>
> >> ---
> >>
> >>> _______________________________________________
> >>> Jython-users mailing list
> >>> Jython-users@...
> >>> https://lists.sourceforge.net/lists/listinfo/jython-users
> >>>
> >>>
> >> --------------------------------------------------------------------
> ---
> >> -------
> >> Let Crystal Reports handle the reporting - Free Crystal Reports 2008
> >> 30-Day
> >> trial. Simplify your report design, integration and deployment - and
> >> focus on
> >> what you do best, core application coding. Discover what's new with
> >> Crystal Reports now. http://p.sf.net/sfu/bobj-july
> >> _______________________________________________
> >> Jython-users mailing list
> >> Jython-users@...
> >> https://lists.sourceforge.net/lists/listinfo/jython-users
> >>
> >
> >
> >
> > This e-mail (including any attachments) is confidential, may contain
> > proprietary or privileged information and is intended for the named
> > recipient(s) only. Unintended recipients are prohibited from taking
> action
> > on the basis of information in this e-mail and must delete all copies.
> > Nomura will not accept responsibility or liability for the accuracy
> or
> > completeness of, or the presence of any virus or disabling code in,
> this
> > e-mail. If verification is sought please request a hard copy. Any
> reference
> > to the terms of executed transactions should be treated as
> preliminary only
> > and subject to formal written confirmation by Nomura. Nomura reserves
> the
> > right to monitor e-mail communications through its networks (in
> accordance
> > with applicable laws). No confidentiality or privilege is waived or
> lost by
> > Nomura by any mistransmission of this e-mail. Any reference to
> "Nomura" is
> > a reference to any entity in the Nomura Holdings, Inc. group. Please
> read
> > our Electronic Communications Legal Notice which forms part of this
> e-mail:
> > http://www.Nomura.com/email_disclaimer.htm
> >
> >
> > ---------------------------------------------------------------------
> ---------
> > Let Crystal Reports handle the reporting - Free Crystal Reports 2008
> 30-Day
> > trial. Simplify your report design, integration and deployment - and
> focus on
> > what you do best, core application coding. Discover what's new with
> > Crystal Reports now. http://p.sf.net/sfu/bobj-july
> > _______________________________________________
> > Jython-users mailing list
> > Jython-users@...
> > https://lists.sourceforge.net/lists/listinfo/jython-users
> >

This e-mail (including any attachments) is confidential, may contain
proprietary or privileged information and is intended for the named
recipient(s) only. Unintended recipients are prohibited from taking action
on the basis of information in this e-mail and must delete all copies.
Nomura will not accept responsibility or liability for the accuracy or
completeness of, or the presence of any virus or disabling code in, this
e-mail. If verification is sought please request a hard copy. Any reference
to the terms of executed transactions should be treated as preliminary only
and subject to formal written confirmation by Nomura. Nomura reserves the
right to monitor e-mail communications through its networks (in accordance
with applicable laws). No confidentiality or privilege is waived or lost by
Nomura by any mistransmission of this e-mail. Any reference to "Nomura" is
a reference to any entity in the Nomura Holdings, Inc. group. Please read
our Electronic Communications Legal Notice which forms part of this e-mail:
http://www.Nomura.com/email_disclaimer.htm

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

Re: java.lang.NoClassDefFoundError: wrong name

2009-11-05T14:33:13Z

Michael,

KeyPBO.class is top level inside the .jar file,
but javap -c reveals:
public final class DhtPairs.KeyPBO extends java.lang.Object
which makes me believe it should be in package DhtPairs.

best wishes,
Oti.

On Thu, Nov 5, 2009 at 8:46 PM, Michael Lawson (mshindo)
<michael@...> wrote:

> Attached is the file. Its a rather simple package, basically just simply one
> class that has been generated by google protocol buffers.
>
>
> On Fri, Nov 6, 2009 at 6:13 AM, Leo Soto M. <leo.soto@...> wrote:
>>
>> On Thu, Nov 5, 2009 at 12:38 AM, Michael Lawson (mshindo)
>> <michael@...> wrote:
>> > Hey,
>> >
>> > I am trying to use a class that I have created that is located in a
>> > seperate
>> > Jar file in my class path. I can use this with standalone java without
>> > any
>> > problems. I have tried several methods of including/importing this into
>> > my
>> > Jython program, all without any success and rather strange error
>> > messages.
>> >
>> > First method:
>> > from DhtPairs import KeyPBO
>> >
>> > which returns
>> >>>> from DhtPairs import KeyPBO
>> > Traceback (innermost last):
>> > File "<console>", line 1, in ?
>> > ImportError: no module named DhtPairs
>> >
>> > and also:
>> > from KeyPBO import Key
>> >>>> import KeyPBO
>> > Traceback (innermost last):
>> > File "<console>", line 1, in ?
>> >         at java.lang.ClassLoader.defineClass1(Native Method)
>> >         at java.lang.ClassLoader.defineClass(ClassLoader.java:700)
>> >         at
>> > java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>> >         at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>> >         at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
>> >         at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>> >         at java.security.AccessController.doPrivileged(Native Method)
>> >         at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>> >         at sun.misc.Launcher$ExtClassLoader.findClass(Launcher.java:244)
>> >         at java.lang.ClassLoader.loadClass(ClassLoader.java:319)
>> >         at java.lang.ClassLoader.loadClass(ClassLoader.java:254)
>> >         at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:399)
>> >         at java.lang.Class.forName0(Native Method)
>> >         at java.lang.Class.forName(Class.java:169)
>> >         at org.python.core.SyspathJavaLoader.loadClass(Unknown Source)
>> >         at java.lang.ClassLoader.loadClass(ClassLoader.java:254)
>> >         at org.python.core.Py.findClassEx(Unknown Source)
>> >         at org.python.core.SysPackageManager.findClass(Unknown Source)
>> >         at org.python.core.PackageManager.findClass(Unknown Source)
>> >         at org.python.core.SysPackageManager.findClass(Unknown Source)
>> >         at org.python.core.PyJavaPackage.__findattr__(Unknown Source)
>> >         at org.python.core.PackageManager.lookupName(Unknown Source)
>> >         at org.python.core.JavaImporter.find_module(Unknown Source)
>> >         at org.python.core.JavaImporter.find_module(Unknown Source)
>> >         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>> >         at
>> >
>> > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>> >         at
>> >
>> > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>> >         at java.lang.reflect.Method.invoke(Method.java:597)
>> >
>> > java.lang.NoClassDefFoundError: java.lang.NoClassDefFoundError: KeyPBO
>> > (wrong name: DhtPairs/KeyPBO)
>> >
>> > Can anyone offer suggestions ?
>>
>> Can you attach the jar file with the Java classes? (or publish on the
>> web?)
>>
>> Regards,
>> --
>> Leo Soto M.
>> http://blog.leosoto.com
>
>
>
> --
> Michael Lawson (mshindo)
>
>
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> trial. Simplify your report design, integration and deployment - and focus
> on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now. http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Jython-users mailing list
> Jython-users@...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>
>

Re: Invoking a function on a module

2009-11-05T13:55:16Z

interp.exec("from mypackage.mymodule import mymethod");
PyObject f = interp.get('mymethod');
PyObject result = f.__call__(new PyString("a"),new PyInteger(123));

john.m.baker@... wrote:

> Hi,
>
> If I want to do:
>
> Import mypackage.mymodule
> Mypackage.mymodule.mymethod('a', 123)
>
> Then how do I do it like this:
>
> PyModule module = ... ?
> PyObject result = module.invoke("mymethod",
> new PyObject[] {
> new PyString('a'),
> new PyInteger(123)
> }
> )
>
> I don't know how to get a reference to module - the reason I ask is I'd like to implement this slightly more strictly than running PythonInterpreter.exec for each method call.
>
> Thanks,
>
>
> john
>
>
>> -----Original Message-----
>> From: Alex Grönholm [mailto:alex.gronholm@...]
>> Sent: 04 November 2009 17:27
>> To: jython-users@...
>> Subject: Re: [Jython-users] Invoking a function on a module
>>
>> john.m.baker@... kirjoitti:
>>
>>> Hello,
>>>
>>> I've looked at the Python API docs but feel that a few common
>>>
>> examples
>>
>>> would be of use. For example, I can pass a String to
>>>
>> PythonInterpreter
>>
>>> and execute it, but how can I invoke the method 'test' on the module
>>> 'mymodule.py', which is in the classpath? Or even better, if my
>>> classpath contains a directory 'mypackage', and the module lives
>>> inside it, how do I do:
>>>
>>> import mypackage.mymodule
>>>
>>> mypackage.mymodule.test('params')
>>>
>>> through the Python API?
>>>
>>>
>> Just exec() those statements one after another. Shouldn't be that
>> difficult to figure out :)
>>
>>> Thanks,
>>>
>>>
>>> John
>>>
>>>
>>>
>>> This e-mail (including any attachments) is confidential, may contain
>>> proprietary or privileged information and is intended for the named
>>> recipient(s) only. Unintended recipients are prohibited from taking
>>> action
>>> on the basis of information in this e-mail and must delete all copies.
>>> Nomura will not accept responsibility or liability for the accuracy
>>>
>> or
>>
>>> completeness of, or the presence of any virus or disabling code in,
>>>
>> this
>>
>>> e-mail. If verification is sought please request a hard copy. Any
>>> reference
>>> to the terms of executed transactions should be treated as
>>>
>> preliminary
>>
>>> only
>>> and subject to formal written confirmation by Nomura. Nomura reserves
>>>
>> the
>>
>>> right to monitor e-mail communications through its networks (in
>>> accordance
>>> with applicable laws). No confidentiality or privilege is waived or
>>> lost by
>>> Nomura by any mistransmission of this e-mail. Any reference to
>>> "Nomura" is
>>> a reference to any entity in the Nomura Holdings, Inc. group. Please
>>>
>> read
>>
>>> our Electronic Communications Legal Notice which forms part of this
>>> e-mail:
>>> http://www.Nomura.com/email_disclaimer.htm
>>> ---------------------------------------------------------------------
>>>
>> ---
>>
>>> ---------------------------------------------------------------------
>>>
>> ---------
>>
>>> Let Crystal Reports handle the reporting - Free Crystal Reports 2008
>>>
>> 30-Day
>>
>>> trial. Simplify your report design, integration and deployment - and
>>>
>> focus on
>>
>>> what you do best, core application coding. Discover what's new with
>>> Crystal Reports now. http://p.sf.net/sfu/bobj-july
>>> ---------------------------------------------------------------------
>>>
>> ---
>>
>>> _______________________________________________
>>> Jython-users mailing list
>>> Jython-users@...
>>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>>
>>>
>> -----------------------------------------------------------------------
>> -------
>> Let Crystal Reports handle the reporting - Free Crystal Reports 2008
>> 30-Day
>> trial. Simplify your report design, integration and deployment - and
>> focus on
>> what you do best, core application coding. Discover what's new with
>> Crystal Reports now. http://p.sf.net/sfu/bobj-july
>> _______________________________________________
>> Jython-users mailing list
>> Jython-users@...
>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>
>
>
>
> This e-mail (including any attachments) is confidential, may contain
> proprietary or privileged information and is intended for the named
> recipient(s) only. Unintended recipients are prohibited from taking action
> on the basis of information in this e-mail and must delete all copies.
> Nomura will not accept responsibility or liability for the accuracy or
> completeness of, or the presence of any virus or disabling code in, this
> e-mail. If verification is sought please request a hard copy. Any reference
> to the terms of executed transactions should be treated as preliminary only
> and subject to formal written confirmation by Nomura. Nomura reserves the
> right to monitor e-mail communications through its networks (in accordance
> with applicable laws). No confidentiality or privilege is waived or lost by
> Nomura by any mistransmission of this e-mail. Any reference to "Nomura" is
> a reference to any entity in the Nomura Holdings, Inc. group. Please read
> our Electronic Communications Legal Notice which forms part of this e-mail:
> http://www.Nomura.com/email_disclaimer.htm
>
>
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> trial. Simplify your report design, integration and deployment - and focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now. http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Jython-users mailing list
> Jython-users@...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>

Re: java.lang.NoClassDefFoundError: wrong name

2009-11-05T11:46:11Z

Attached is the file. Its a rather simple package, basically just simply one class that has been generated by google protocol buffers.

On Fri, Nov 6, 2009 at 6:13 AM, Leo Soto M. <leo.soto@...> wrote:

On Thu, Nov 5, 2009 at 12:38 AM, Michael Lawson (mshindo)
<michael@...> wrote:
> Hey,
>
> I am trying to use a class that I have created that is located in a seperate
> Jar file in my class path. I can use this with standalone java without any
> problems. I have tried several methods of including/importing this into my
> Jython program, all without any success and rather strange error messages.
>
> First method:
> from DhtPairs import KeyPBO
>
> which returns
>>>> from DhtPairs import KeyPBO
> Traceback (innermost last):
> File "<console>", line 1, in ?
> ImportError: no module named DhtPairs
>
> and also:
> from KeyPBO import Key
>>>> import KeyPBO
> Traceback (innermost last):
> File "<console>", line 1, in ?
>         at java.lang.ClassLoader.defineClass1(Native Method)
>         at java.lang.ClassLoader.defineClass(ClassLoader.java:700)
>         at
> java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>         at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>         at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
>         at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>         at sun.misc.Launcher$ExtClassLoader.findClass(Launcher.java:244)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:319)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:254)
>         at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:399)
>         at java.lang.Class.forName0(Native Method)
>         at java.lang.Class.forName(Class.java:169)
>         at org.python.core.SyspathJavaLoader.loadClass(Unknown Source)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:254)
>         at org.python.core.Py.findClassEx(Unknown Source)
>         at org.python.core.SysPackageManager.findClass(Unknown Source)
>         at org.python.core.PackageManager.findClass(Unknown Source)
>         at org.python.core.SysPackageManager.findClass(Unknown Source)
>         at org.python.core.PyJavaPackage.__findattr__(Unknown Source)
>         at org.python.core.PackageManager.lookupName(Unknown Source)
>         at org.python.core.JavaImporter.find_module(Unknown Source)
>         at org.python.core.JavaImporter.find_module(Unknown Source)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>         at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>
> java.lang.NoClassDefFoundError: java.lang.NoClassDefFoundError: KeyPBO
> (wrong name: DhtPairs/KeyPBO)
>
> Can anyone offer suggestions ?

Can you attach the jar file with the Java classes? (or publish on the web?)

Regards,
--
Leo Soto M.
http://blog.leosoto.com

--
Michael Lawson (mshindo)

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

DhtPairs.jar (8K) Download Attachment

Re: java.lang.NoClassDefFoundError: wrong name

2009-11-05T09:13:34Z

On Thu, Nov 5, 2009 at 12:38 AM, Michael Lawson (mshindo)
<michael@...> wrote:

> Hey,
>
> I am trying to use a class that I have created that is located in a seperate
> Jar file in my class path. I can use this with standalone java without any
> problems. I have tried several methods of including/importing this into my
> Jython program, all without any success and rather strange error messages.
>
> First method:
> from DhtPairs import KeyPBO
>
> which returns
>>>> from DhtPairs import KeyPBO
> Traceback (innermost last):
> File "<console>", line 1, in ?
> ImportError: no module named DhtPairs
>
> and also:
> from KeyPBO import Key
>>>> import KeyPBO
> Traceback (innermost last):
> File "<console>", line 1, in ?
>         at java.lang.ClassLoader.defineClass1(Native Method)
>         at java.lang.ClassLoader.defineClass(ClassLoader.java:700)
>         at
> java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>         at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>         at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
>         at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>         at sun.misc.Launcher$ExtClassLoader.findClass(Launcher.java:244)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:319)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:254)
>         at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:399)
>         at java.lang.Class.forName0(Native Method)
>         at java.lang.Class.forName(Class.java:169)
>         at org.python.core.SyspathJavaLoader.loadClass(Unknown Source)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:254)
>         at org.python.core.Py.findClassEx(Unknown Source)
>         at org.python.core.SysPackageManager.findClass(Unknown Source)
>         at org.python.core.PackageManager.findClass(Unknown Source)
>         at org.python.core.SysPackageManager.findClass(Unknown Source)
>         at org.python.core.PyJavaPackage.__findattr__(Unknown Source)
>         at org.python.core.PackageManager.lookupName(Unknown Source)
>         at org.python.core.JavaImporter.find_module(Unknown Source)
>         at org.python.core.JavaImporter.find_module(Unknown Source)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>         at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>
> java.lang.NoClassDefFoundError: java.lang.NoClassDefFoundError: KeyPBO
> (wrong name: DhtPairs/KeyPBO)
>
> Can anyone offer suggestions ?

Can you attach the jar file with the Java classes? (or publish on the web?)

Regards,
--
Leo Soto M.
http://blog.leosoto.com

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

Re: Invoking a function on a module

2009-11-05T09:02:38Z

May I suggest the far easier mechanism of using an object factory? It's more general than the incomplete snippet presented, and we have lots of experience using it for Java integration:

http://jythonpodcast.hostjava.net/jythonbook/chapter10.html#object-factories

An alternative would be to use JSR223, also documented in chapter 10.

- Jim

On Thu, Nov 5, 2009 at 9:36 AM, <john.m.baker@...> wrote:

Hi,

If I want to do:

Import mypackage.mymodule
Mypackage.mymodule.mymethod('a', 123)

Then how do I do it like this:

PyModule module = ... ?
PyObject result = module.invoke("mymethod",
new PyObject[] {
new PyString('a'),
new PyInteger(123)
}
)

I don't know how to get a reference to module - the reason I ask is I'd like to implement this slightly more strictly than running PythonInterpreter.exec for each method call.

Thanks,

john

> -----Original Message-----
> From: Alex Grönholm [mailto:alex.gronholm@...]
> Sent: 04 November 2009 17:27
> To: jython-users@...
> Subject: Re: [Jython-users] Invoking a function on a module
>

> john.m.baker@... kirjoitti:
> >
> > Hello,
> >
> > I've looked at the Python API docs but feel that a few common
> examples
> > would be of use. For example, I can pass a String to
> PythonInterpreter
> > and execute it, but how can I invoke the method 'test' on the module
> > 'mymodule.py', which is in the classpath? Or even better, if my
> > classpath contains a directory 'mypackage', and the module lives
> > inside it, how do I do:
> >
> > import mypackage.mymodule
> >
> > mypackage.mymodule.test('params')
> >
> > through the Python API?
> >
> Just exec() those statements one after another. Shouldn't be that
> difficult to figure out :)
> >
> > Thanks,
> >
> >
> > John
> >
> >
> >
> > This e-mail (including any attachments) is confidential, may contain
> > proprietary or privileged information and is intended for the named
> > recipient(s) only. Unintended recipients are prohibited from taking
> > action
> > on the basis of information in this e-mail and must delete all copies.
> > Nomura will not accept responsibility or liability for the accuracy
> or
> > completeness of, or the presence of any virus or disabling code in,
> this
> > e-mail. If verification is sought please request a hard copy. Any
> > reference
> > to the terms of executed transactions should be treated as
> preliminary
> > only
> > and subject to formal written confirmation by Nomura. Nomura reserves
> the
> > right to monitor e-mail communications through its networks (in
> > accordance
> > with applicable laws). No confidentiality or privilege is waived or
> > lost by
> > Nomura by any mistransmission of this e-mail. Any reference to
> > "Nomura" is
> > a reference to any entity in the Nomura Holdings, Inc. group. Please
> read
> > our Electronic Communications Legal Notice which forms part of this
> > e-mail:
> > http://www.Nomura.com/email_disclaimer.htm
> > ---------------------------------------------------------------------
> ---
> >
> > ---------------------------------------------------------------------
> ---------
> > Let Crystal Reports handle the reporting - Free Crystal Reports 2008
> 30-Day
> > trial. Simplify your report design, integration and deployment - and
> focus on
> > what you do best, core application coding. Discover what's new with
> > Crystal Reports now. http://p.sf.net/sfu/bobj-july
> > ---------------------------------------------------------------------
> ---
> >
> > _______________________________________________
> > Jython-users mailing list
> > Jython-users@...
> > https://lists.sourceforge.net/lists/listinfo/jython-users
> >
>
>
> -----------------------------------------------------------------------
> -------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008
> 30-Day
> trial. Simplify your report design, integration and deployment - and
> focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now. http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Jython-users mailing list
> Jython-users@...
> https://lists.sourceforge.net/lists/listinfo/jython-users

This e-mail (including any attachments) is confidential, may contain
proprietary or privileged information and is intended for the named
recipient(s) only. Unintended recipients are prohibited from taking action
on the basis of information in this e-mail and must delete all copies.
Nomura will not accept responsibility or liability for the accuracy or
completeness of, or the presence of any virus or disabling code in, this
e-mail. If verification is sought please request a hard copy. Any reference
to the terms of executed transactions should be treated as preliminary only
and subject to formal written confirmation by Nomura. Nomura reserves the
right to monitor e-mail communications through its networks (in accordance
with applicable laws). No confidentiality or privilege is waived or lost by
Nomura by any mistransmission of this e-mail. Any reference to "Nomura" is
a reference to any entity in the Nomura Holdings, Inc. group. Please read
our Electronic Communications Legal Notice which forms part of this e-mail:
http://www.Nomura.com/email_disclaimer.htm

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

--
Jim Baker
jbaker@...

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

ANN: Jump 0.9.6 released!

2009-11-05T08:56:55Z

I am proud to announce that Jump 0.9.6 is released!

Jump is a build tool for distributing Java and Jython applications in a really simple step. You can find the Jump project at http://opensource.ollix.com/jump. Yes, we have a new website!

New features:

* Support distributing `JAVA ONLY` applications!

* Support including resource files in the final distribution.

If you have any question or bug report, please post it to our mailing list at http://groups.google.com/group/ollix-jump, contributions are always welcome as well.

--
Olli Wang

OLLI WANG PRODUCTIONS - http://olliwang.com
A BLOG ABOUT MY LIFE AND MY WORK

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

Re: Invoking a function on a module

2009-11-05T08:36:59Z

Hi,

If I want to do:

Import mypackage.mymodule
Mypackage.mymodule.mymethod('a', 123)

Then how do I do it like this:

PyModule module = ... ?
PyObject result = module.invoke("mymethod",
new PyObject[] {
new PyString('a'),
new PyInteger(123)
}
)

I don't know how to get a reference to module - the reason I ask is I'd like to implement this slightly more strictly than running PythonInterpreter.exec for each method call.

Thanks,

john

> -----Original Message-----
> From: Alex Grönholm [mailto:alex.gronholm@...]
> Sent: 04 November 2009 17:27
> To: jython-users@...
> Subject: Re: [Jython-users] Invoking a function on a module
>
> john.m.baker@... kirjoitti:
> >
> > Hello,
> >
> > I've looked at the Python API docs but feel that a few common
> examples
> > would be of use. For example, I can pass a String to
> PythonInterpreter
> > and execute it, but how can I invoke the method 'test' on the module
> > 'mymodule.py', which is in the classpath? Or even better, if my
> > classpath contains a directory 'mypackage', and the module lives
> > inside it, how do I do:
> >
> > import mypackage.mymodule
> >
> > mypackage.mymodule.test('params')
> >
> > through the Python API?
> >
> Just exec() those statements one after another. Shouldn't be that
> difficult to figure out :)
> >
> > Thanks,
> >
> >
> > John
> >
> >
> >
> > This e-mail (including any attachments) is confidential, may contain
> > proprietary or privileged information and is intended for the named
> > recipient(s) only. Unintended recipients are prohibited from taking
> > action
> > on the basis of information in this e-mail and must delete all copies.
> > Nomura will not accept responsibility or liability for the accuracy
> or
> > completeness of, or the presence of any virus or disabling code in,
> this
> > e-mail. If verification is sought please request a hard copy. Any
> > reference
> > to the terms of executed transactions should be treated as
> preliminary
> > only
> > and subject to formal written confirmation by Nomura. Nomura reserves
> the
> > right to monitor e-mail communications through its networks (in
> > accordance
> > with applicable laws). No confidentiality or privilege is waived or
> > lost by
> > Nomura by any mistransmission of this e-mail. Any reference to
> > "Nomura" is
> > a reference to any entity in the Nomura Holdings, Inc. group. Please
> read
> > our Electronic Communications Legal Notice which forms part of this
> > e-mail:
> > http://www.Nomura.com/email_disclaimer.htm
> > ---------------------------------------------------------------------
> ---
> >
> > ---------------------------------------------------------------------
> ---------
> > Let Crystal Reports handle the reporting - Free Crystal Reports 2008
> 30-Day
> > trial. Simplify your report design, integration and deployment - and
> focus on
> > what you do best, core application coding. Discover what's new with
> > Crystal Reports now. http://p.sf.net/sfu/bobj-july
> > ---------------------------------------------------------------------
> ---
> >
> > _______________________________________________
> > Jython-users mailing list
> > Jython-users@...
> > https://lists.sourceforge.net/lists/listinfo/jython-users
> >
>
>
> -----------------------------------------------------------------------
> -------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008
> 30-Day
> trial. Simplify your report design, integration and deployment - and
> focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now. http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Jython-users mailing list
> Jython-users@...
> https://lists.sourceforge.net/lists/listinfo/jython-users

Re: Invoking a function on a module

2009-11-05T01:44:52Z

Well I assumed I'd have to create a PyModule and invoke a function on it...

java.lang.NoClassDefFoundError: wrong name

2009-11-04T19:38:00Z

Hey,

I am trying to use a class that I have created that is located in a seperate Jar file in my class path. I can use this with standalone java without any problems. I have tried several methods of including/importing this into my Jython program, all without any success and rather strange error messages.

First method:
from DhtPairs import KeyPBO

which returns
>>> from DhtPairs import KeyPBO
Traceback (innermost last):
File "<console>", line 1, in ?
ImportError: no module named DhtPairs

and also:
from KeyPBO import Key
>>> import KeyPBO
Traceback (innermost last):
File "<console>", line 1, in ?
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:700)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at sun.misc.Launcher$ExtClassLoader.findClass(Launcher.java:244)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:319)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:254)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:399)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:169)
        at org.python.core.SyspathJavaLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:254)
        at org.python.core.Py.findClassEx(Unknown Source)
        at org.python.core.SysPackageManager.findClass(Unknown Source)
        at org.python.core.PackageManager.findClass(Unknown Source)
        at org.python.core.SysPackageManager.findClass(Unknown Source)
        at org.python.core.PyJavaPackage.__findattr__(Unknown Source)
        at org.python.core.PackageManager.lookupName(Unknown Source)
        at org.python.core.JavaImporter.find_module(Unknown Source)
        at org.python.core.JavaImporter.find_module(Unknown Source)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)

java.lang.NoClassDefFoundError: java.lang.NoClassDefFoundError: KeyPBO (wrong name: DhtPairs/KeyPBO)

Can anyone offer suggestions ?

--
Michael Lawson (mshindo)

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

Re: Invoking a function on a module

2009-11-04T09:26:42Z

john.m.baker@... kirjoitti:

Just exec() those statements one after another. Shouldn't be that
difficult to figure out :)

>
> Thanks,
>
>
> John
>
>
>
> This e-mail (including any attachments) is confidential, may contain
> proprietary or privileged information and is intended for the named
> recipient(s) only. Unintended recipients are prohibited from taking
> action
> on the basis of information in this e-mail and must delete all copies.
> Nomura will not accept responsibility or liability for the accuracy or
> completeness of, or the presence of any virus or disabling code in, this
> e-mail. If verification is sought please request a hard copy. Any
> reference
> to the terms of executed transactions should be treated as preliminary
> only
> and subject to formal written confirmation by Nomura. Nomura reserves the
> right to monitor e-mail communications through its networks (in
> accordance
> with applicable laws). No confidentiality or privilege is waived or
> lost by
> Nomura by any mistransmission of this e-mail. Any reference to
> "Nomura" is
> a reference to any entity in the Nomura Holdings, Inc. group. Please read
> our Electronic Communications Legal Notice which forms part of this
> e-mail:
> http://www.Nomura.com/email_disclaimer.htm
> ------------------------------------------------------------------------
>
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> trial. Simplify your report design, integration and deployment - and focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now. http://p.sf.net/sfu/bobj-july
> ------------------------------------------------------------------------
>
> _______________________________________________
> Jython-users mailing list
> Jython-users@...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>

Re: Invoking a function on a module

2009-11-04T09:09:46Z

http://wiki.python.org/jython/UserGuide#embedding-jython

john.m.baker@... wrote:

>
> Hello,
>
> I’ve looked at the Python API docs but feel that a few common examples
> would be of use. For example, I can pass a String to PythonInterpreter
> and execute it, but how can I invoke the method ‘test’ on the module
> ‘mymodule.py’, which is in the classpath? Or even better, if my
> classpath contains a directory ‘mypackage’, and the module lives
> inside it, how do I do:
>
> import mypackage.mymodule
>
> mypackage.mymodule.test(‘params’)
>
> through the Python API?
>
> Thanks,
>
>
> John
>
>
>
> This e-mail (including any attachments) is confidential, may contain
> proprietary or privileged information and is intended for the named
> recipient(s) only. Unintended recipients are prohibited from taking
> action
> on the basis of information in this e-mail and must delete all copies.
> Nomura will not accept responsibility or liability for the accuracy or
> completeness of, or the presence of any virus or disabling code in, this
> e-mail. If verification is sought please request a hard copy. Any
> reference
> to the terms of executed transactions should be treated as preliminary
> only
> and subject to formal written confirmation by Nomura. Nomura reserves the
> right to monitor e-mail communications through its networks (in
> accordance
> with applicable laws). No confidentiality or privilege is waived or
> lost by
> Nomura by any mistransmission of this e-mail. Any reference to
> "Nomura" is
> a reference to any entity in the Nomura Holdings, Inc. group. Please read
> our Electronic Communications Legal Notice which forms part of this
> e-mail:
> http://www.Nomura.com/email_disclaimer.htm
> ------------------------------------------------------------------------
>
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> trial. Simplify your report design, integration and deployment - and focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now. http://p.sf.net/sfu/bobj-july
> ------------------------------------------------------------------------
>
> _______________________________________________
> Jython-users mailing list
> Jython-users@...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>

Re: Using Python Classes from Java without Factories / Jython on Java ME

2009-11-04T08:49:10Z

Jan Wedel kirjoitti:

>
> Hi,
>
>
>
> I’m currently looking for a way to get a python script running on an
> Java ME (IMP/CLDC) environment. I actually already ported PyMite to
> Java but it was to slow because it was interpreting Python byte code
> at runtime.
>
>
>
> Then I though Clamp could be the solution and Charlie Groves pointed
> me back to jython which is able to compile Python scripts to class files.
>
>
>
> I used the compileall script to compile a midlet written in python,
> something like this:
>
> from javax.microedition.midlet import MIDlet
>
> class PyMidlet(MIDlet):
>
> def __init__(self):
>
> print "Midlet Constructor"
>
> def startApp(self):
>
> print "Application
> started."
>
> def pauseApp(self):
>
> print "Application
> paused."
>
> def destroyApp(self, cond):
>
> print "Application destroyed,
> condition=", cond
>
>
>
> I packaged this as a jar, created a jad and run it with the WTK
> emulator. It says not Midlet “PyMidlet” found. Then I used JBE to look
> at the generated java bytecode and compared it to the bytecode of a
> “real” Java midlet.
>
>
>
> Taking a quick look, I saw two important things:
>
> 1.) It implements the PyRunnable interface instead of MIDlet
>
> 2.) All method got a $1, $2 attached to its names.
>
>
>
> So, now the question, is it possible, to create a class file that
> looks and behaves like a “real” MIDlet from other java classes?
>
>
>
> Ok, and the second, maybe more important, question is, is “only” the
> python libraries implemented in Java that use advanced java features
> (HashMap e.g.) that do not exist in JavaME? That would be Ok, because
> I’m a pro in porting JavaSE code to JavaME. Or, does the core part,
> that is essentially necessary to run even the most simple python
> script, does use e.g. class loading which can not be implemented in
> Java ME at all?
>
>
>
> What I need is a self-contained jar file including only the necessary
> class files. I don’t need the interpreter and features like the
> interactive input.
>
>
>
> So, I am willing to spend some time (days, weeks) to the necessary
> work to get it running on Java ME. But if there is some general
> restrictions in the architecture of Jython, it won’t be possible.
>

This is exactly what Clamp is meant to do. Charlie Groves has not yet
finished his work on the necessary proxy generation hooks in Jython,
which would enable Clamp to function. If you want to expedite the
process, offer him your help.

>
>
>
> Any comments are welcome!
>
>
>
> Jan
>
> ------------------------------------------------------------------------
>
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> trial. Simplify your report design, integration and deployment - and focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now. http://p.sf.net/sfu/bobj-july
> ------------------------------------------------------------------------
>
> _______________________________________________
> Jython-users mailing list
> Jython-users@...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>

Using Python Classes from Java without Factories / Jython on Java ME

2009-11-04T08:41:34Z

Hi,

I’m currently looking for a way to get a python script running on an Java ME (IMP/CLDC) environment. I actually already ported PyMite to Java but it was to slow because it was interpreting Python byte code at runtime.

Then I though Clamp could be the solution and Charlie Groves pointed me back to jython which is able to compile Python scripts to class files.

I used the compileall script to compile a midlet written in python, something like this:

from javax.microedition.midlet import MIDlet

class PyMidlet(MIDlet):

def __init__(self):

print "Midlet Constructor"

def startApp(self):

print "Application started."

def pauseApp(self):

print "Application paused."

def destroyApp(self, cond):

print "Application destroyed, condition=", cond

I packaged this as a jar, created a jad and run it with the WTK emulator. It says not Midlet “PyMidlet” found. Then I used JBE to look at the generated java bytecode and compared it to the bytecode of a “real” Java midlet.

Taking a quick look, I saw two important things:

1.) It implements the PyRunnable interface instead of MIDlet

2.) All method got a $1, $2 attached to its names.

So, now the question, is it possible, to create a class file that looks and behaves like a “real” MIDlet from other java classes?

Ok, and the second, maybe more important, question is, is “only” the python libraries implemented in Java that use advanced java features (HashMap e.g.) that do not exist in JavaME? That would be Ok, because I’m a pro in porting JavaSE code to JavaME. Or, does the core part, that is essentially necessary to run even the most simple python script, does use e.g. class loading which can not be implemented in Java ME at all?

What I need is a self-contained jar file including only the necessary class files. I don’t need the interpreter and features like the interactive input.

So, I am willing to spend some time (days, weeks) to the necessary work to get it running on Java ME. But if there is some general restrictions in the architecture of Jython, it won’t be possible.

Any comments are welcome!

Jan

Re: BeautifulSoup is very slow with Jython

2009-11-04T06:57:44Z

In article
<d03bb4010911030757m64f2e6cag8c00edf2d4b1c349@...>,
Jim Baker <jbaker@...> wrote:

> So we looked at both java.util.regex and somewhat more seriously at the
> JRuby regex engine (itself a port of a C-based engine). In the latter case,
> Nicholas Riley saw something like 30% (as I recall it) speedup over our
> existing engine.

It was closer to 50% on pyparsing, but that's a pretty extreme case of
regex usage. One of the major issues is that the string gets converted
into an int array and back in order to handle 4-byte Unicode characters.

One version of my patch is here:

<http://freya.cs.uiuc.edu/~njriley/joni.patch>

It's pretty rough, though. It may be possible to examine the regex at
compile time to determine whether it's executable with another engine or
needs exact sre emulation.
--
Nicholas Riley <njriley@...>

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

Invoking a function on a module

2009-11-04T02:04:10Z

Invoking a function on a module

Hello,

I’ve looked at the Python API docs but feel that a few common examples would be of use. For example, I can pass a String to PythonInterpreter and execute it, but how can I invoke the method ‘test’ on the module ‘mymodule.py’, which is in the classpath? Or even better, if my classpath contains a directory ‘mypackage’, and the module lives inside it, how do I do:

import mypackage.mymodule

mypackage.mymodule.test(‘params’)

through the Python API?

Thanks,

John

This e-mail (including any attachments) is confidential, may contain

proprietary or privileged information and is intended for the named

recipient(s) only. Unintended recipients are prohibited from taking action

on the basis of information in this e-mail and must delete all copies.

Nomura will not accept responsibility or liability for the accuracy or

completeness of, or the presence of any virus or disabling code in, this

e-mail. If verification is sought please request a hard copy. Any reference

to the terms of executed transactions should be treated as preliminary only

and subject to formal written confirmation by Nomura. Nomura reserves the

right to monitor e-mail communications through its networks (in accordance

with applicable laws). No confidentiality or privilege is waived or lost by

Nomura by any mistransmission of this e-mail. Any reference to "Nomura" is

a reference to any entity in the Nomura Holdings, Inc. group. Please read

our Electronic Communications Legal Notice which forms part of this e-mail:

http://www.Nomura.com/email_disclaimer.htm

struts like jython actions

2009-11-04T01:47:38Z

I've put together a simple Struts like action framework by extending the VelocityViewServlet and using the JythonUberspect from here http://wiki.apache.org/velocity/JythonUberspect

Basic idea is on a call to some_page.vm it will first run some_page.py and then pass the request back to some_page.vm, with no configuration. The locals from some_page.py are picked up and automatically made available in the Velocity context.

It all seems to work well, I can easily access the relevant Jython objects on the Velocity pages. However, I had to introduce an interpreter pool, as each request needs to be made in a separate interpreter for things not to clash. Also having to "clean up" the interpreter prior to sending it back to the pool.

I've since come up with another version of this, instead of executing a script each time, this one has all the Actions defined as classes. The definition for these action classes are loaded once, and on each call I get a new instance of the class and run the execute method (just like Struts2). The variables in the class is then made available automatically to the Velocity context. This too seems to work well.

With both ways, I can now do most of the coding using Jython but still have access to all the Java tools. For example, we use Solr a lot and the embedded solr server is started in a Jython module. We have also started up Quartz scheduler and datasources for database the same way. All these services are then easily available to the actions via a simple import statement.

My question is which way to go? I like the first way because the action scripts are very clean, but I'm not sure about keeping a pool of interpreters. I also like the second way because there is only one interpreter and the actions classes are compiled once until they change, but the actions in classes is not as clean as a plain script.

Wonder if anyone can give input about this?

Thanks
Ron

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

Re: from and with keywords

2009-11-03T11:37:53Z

I didn't know that, so useful to me... ;-)

On 3 Nov 2009, at 16:56, Leo Soto M. wrote:

> On Tue, Nov 3, 2009 at 9:17 AM, Jason R Briggs
> <jasonrbriggs@...> wrote:
>> I think you might've misunderstood me. You *can* use a jar with
>> the Lib
>> dir, and as far as I'm aware site-packages is supported (someone else
>> might be able to confirm). All I'm saying is when you bundle it
>> inside a
>> war file, I'm not sure how the .pth stuff will work.
>>
>> Regarding site-packages, I was more questioning the necessity of
>> using it.
>> That dir is used when you're providing site-wide extensions for a
>> Python
>> installation. In this case you're bundling jython inside a war (so
>> it
>> doesn't really fit the definition of "site-wide") so you could
>> probably
>> get away with including the module dir in whatever dir you're
>> storing your
>> main jython scripts.
>
> Not sure if relevant to the discussion (since I haven't followed it
> all) but still useful information:
>
> On WAR web deployment scenarios when the request dispatching is done
> using modjy, the WEB-INF/lib-python directory will be automatically
> added to the path
>
> Regards,
> --
> Leo Soto M.
> http://blog.leosoto.com

------------------------------------------------------------------------------
Come build with us! The BlackBerry(R) Developer Conference in SF, CA
is the only developer event you need to attend this year. Jumpstart your
developing skills, take BlackBerry mobile applications to market and stay
ahead of the curve. Join us from November 9 - 12, 2009. Register now!
http://p.sf.net/sfu/devconference
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

Re: from and with keywords

2009-11-03T08:56:40Z

On Tue, Nov 3, 2009 at 9:17 AM, Jason R Briggs <jasonrbriggs@...> wrote:

> I think you might've misunderstood me. You *can* use a jar with the Lib
> dir, and as far as I'm aware site-packages is supported (someone else
> might be able to confirm). All I'm saying is when you bundle it inside a
> war file, I'm not sure how the .pth stuff will work.
>
> Regarding site-packages, I was more questioning the necessity of using it.
> That dir is used when you're providing site-wide extensions for a Python
> installation. In this case you're bundling jython inside a war (so it
> doesn't really fit the definition of "site-wide") so you could probably
> get away with including the module dir in whatever dir you're storing your
> main jython scripts.

Not sure if relevant to the discussion (since I haven't followed it
all) but still useful information:

On WAR web deployment scenarios when the request dispatching is done
using modjy, the WEB-INF/lib-python directory will be automatically
added to the path

Regards,
--
Leo Soto M.
http://blog.leosoto.com

------------------------------------------------------------------------------
Come build with us! The BlackBerry(R) Developer Conference in SF, CA
is the only developer event you need to attend this year. Jumpstart your
developing skills, take BlackBerry mobile applications to market and stay
ahead of the curve. Join us from November 9 - 12, 2009. Register now!
http://p.sf.net/sfu/devconference
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

Re: BeautifulSoup is very slow with Jython

2009-11-03T08:36:54Z

What were the biggest obstacles to implementing re
as a wrapper for java.util.regex?

Larry

------------------------------------------------------------------------------
Come build with us! The BlackBerry(R) Developer Conference in SF, CA
is the only developer event you need to attend this year. Jumpstart your
developing skills, take BlackBerry mobile applications to market and stay
ahead of the curve. Join us from November 9 - 12, 2009. Register now!
http://p.sf.net/sfu/devconference
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

Re: BeautifulSoup is very slow with Jython

2009-11-03T07:57:11Z

So we looked at both java.util.regex and somewhat more seriously at the JRuby regex engine (itself a port of a C-based engine). In the latter case, Nicholas Riley saw something like 30% (as I recall it) speedup over our existing engine.

But the semantics of the last "10%" makes it difficult.

The reality is that CPython's sre is quite good. We just need to put some more resources in finetuning our port, as well as fixing any gaping holes in performance, as seems to be suggested by what we are seeing with HTMLParser. In terms of the finetuning, we know of several opportunities to speed things up, it's just a question of spending some time on them.

- Jim

2009/11/3 Alex Grönholm <alex.gronholm@...>

Eli Golovinsky kirjoitti:

> Isn't CPython regex implementation in C? Couldn't Jython's regex
> implementation use the Java regular expression engine after (possibly)
> some simple translation from Python syntax to Java syntax?
>
>

Java's regular expressions have different semantics.
Jython's REs are notoriously slow, but iirc it's being worked on and I'd
expect faster REs in the 2.5 line of releases already.

> ---
> gooli
>
>
>
> 2009/11/3 Jim Baker <jbaker@...>:
>
>> At least the problem is in a very small part of the code (which seems to be
>> the usual case for something so bad). The goahead, parse_starttag, and
>> parse_endtag methods in HTMLParser all use regexes extensively, so that
>> would be my first guess. Our regex implementation is a direct port of
>> CPython's, but it's certainly possible that we have not applied the same
>> subsequent performance optimizations for support of such things as
>> lookahead.
>>
>> So now we need to profile a little deeper with something like YourKit to see
>> what's really happening.
>>
>> 2009/11/3 Sébastien Boisgérault <Sebastien.Boisgerault@...>
>>
>>> Sébastien Boisgérault a écrit :
>>>
>>> Eli Golovinsky a écrit :
>>>
>>>
>>> Hi,
>>>
>>> I just tried to run BeautifulSoup (3.1.0.1) with Jython (2.5.1) and I
>>> was amazed to see how much slower it was than CPython (2.6). Parsing a
>>> page (http://www.fixprotocol.org/specifications/fields/5000-5999) with
>>> CPython took just under a second (0.844 second to be exact). With
>>> Jython it took 564 seconds - almost 700 times as much.
>>>
>>> Can anyone confirm this result? It's doesn't seem reasonable for
>>> Jython to run 700 times slower than CPython.
>>>
>>>
>>> CPython is about x380 faster on my box.
>>>
>>> ouch ...
>>>
>>> SB
>>>
>>>
>>>
>>> Attached below the execution profiles with CPython and Jython.
>>>
>>> AFAICT BeautifulSoup code performs OK with Jython (a few seconds tops
>>> spent in handle_* methods), but the HTMLParser code (goahead, parse_*
>>> methods) it calls is painfully slow.
>>>
>>>
>>>
>>> CPYTHON
>>>
>>> Tue Nov 3 14:24:46 2009 results
>>>
>>> 903568 function calls (903519 primitive calls) in 6.512 CPU
>>> seconds
>>>
>>> Ordered by: cumulative time
>>> List reduced from 137 to 20 due to restriction <20>
>>>
>>> ncalls tottime percall cumtime percall filename:lineno(function)
>>> 1 0.000 0.000 6.512 6.512
>>> profile:0(BeautifulSoup(data))
>>> 1 0.000 0.000 6.512 6.512 <string>:1(<module>)
>>> 1 0.000 0.000 6.512 6.512
>>> BeautifulSoup.py:1164(__init__)
>>> 1 0.000 0.000 6.512 6.512 BeautifulSoup.py:1236(_feed)
>>> 1 0.000 0.000 6.512 6.512
>>> BeautifulSoup.py:1495(__init__)
>>> 1 0.000 0.000 6.484 6.484 HTMLParser.py:101(feed)
>>> 1 0.600 0.600 6.484 6.484 HTMLParser.py:132(goahead)
>>> 11083 0.556 0.000 3.784 0.000
>>> HTMLParser.py:224(parse_starttag)
>>> 11083 0.060 0.000 2.552 0.000
>>> BeautifulSoup.py:1013(handle_starttag)
>>> 11083 0.264 0.000 2.492 0.000
>>> BeautifulSoup.py:1397(unknown_starttag)
>>> 8351 0.240 0.000 1.404 0.000
>>> HTMLParser.py:305(parse_endtag)
>>> 8351 0.060 0.000 1.044 0.000
>>> BeautifulSoup.py:1019(handle_endtag)
>>> 8351 0.120 0.000 0.984 0.000
>>> BeautifulSoup.py:1427(unknown_endtag)
>>> 8349 0.484 0.000 0.912 0.000
>>> BeautifulSoup.py:1351(_smartPop)
>>> 11084 0.168 0.000 0.676 0.000
>>> BeautifulSoup.py:500(__init__)
>>> 12420 0.276 0.000 0.604 0.000
>>> BeautifulSoup.py:1329(_popToTag)
>>> 19441 0.216 0.000 0.528 0.000
>>> BeautifulSoup.py:1306(endData)
>>> 33250 0.244 0.000 0.368 0.000
>>> BeautifulSoup.py:1269(isSelfClosingTag)
>>> 66134 0.344 0.000 0.344 0.000 :0(match)
>>> 103566 0.280 0.000 0.280 0.000
>>> BeautifulSoup.py:554(__nonzero__)
>>>
>>> JYTHON
>>>
>>> Tue Nov 3 14:31:34 2009 results
>>>
>>> 383982 function calls (383944 primitive calls) in 390.007 CPU
>>> seconds
>>>
>>> Ordered by: cumulative time
>>> List reduced from 97 to 20 due to restriction <20>
>>>
>>> ncalls tottime percall cumtime percall filename:lineno(function)
>>> 1 0.003 0.003 390.007 390.007
>>> profile:0(BeautifulSoup(data))
>>> 1 0.000 0.000 390.004 390.004 <string>:0(<module>)
>>> 1 0.000 0.000 390.004 390.004
>>> BeautifulSoup.py:1495(__init__)
>>> 1 0.000 0.000 390.004 390.004
>>> BeautifulSoup.py:1164(__init__)
>>> 1 0.372 0.372 390.003 390.003 BeautifulSoup.py:1236(_feed)
>>> 1 0.000 0.000 389.553 389.553 HTMLParser.py:101(feed)
>>> 1 159.714 159.714 389.552 389.552 HTMLParser.py:132(goahead)
>>> 11083 112.086 0.010 159.921 0.014
>>> HTMLParser.py:224(parse_starttag)
>>> 8351 68.361 0.008 69.394 0.008
>>> HTMLParser.py:305(parse_endtag)
>>> 11083 45.443 0.004 45.443 0.004
>>> HTMLParser.py:275(check_for_whole_start_tag)
>>> 11083 0.084 0.000 2.363 0.000
>>> BeautifulSoup.py:1013(handle_starttag)
>>> 11083 0.536 0.000 2.278 0.000
>>> BeautifulSoup.py:1397(unknown_starttag)
>>> 8351 0.051 0.000 1.009 0.000
>>> BeautifulSoup.py:1019(handle_endtag)
>>> 8351 0.077 0.000 0.958 0.000
>>> BeautifulSoup.py:1427(unknown_endtag)
>>> 19441 0.438 0.000 0.761 0.000
>>> BeautifulSoup.py:1306(endData)
>>> 11084 0.374 0.000 0.726 0.000
>>> BeautifulSoup.py:500(__init__)
>>> 8349 0.498 0.000 0.630 0.000
>>> BeautifulSoup.py:1351(_smartPop)
>>> 38924 0.435 0.000 0.435 0.000 markupbase.py:49(updatepos)
>>> 12420 0.251 0.000 0.334 0.000
>>> BeautifulSoup.py:1329(_popToTag)
>>> 17252 0.220 0.000 0.245 0.000 BeautifulSoup.py:118(setup)
>>>
>>>
>>>
>>>
>>> Perhaps something is
>>> wrong with my setup.
>>>
>>> Here's the code I used:
>>>
>>> import time
>>> from BeautifulSoup import BeautifulSoup
>>> data = open("fix-5000-5999.html").read()
>>> start = time.time()
>>> soup = BeautifulSoup(data)
>>> print time.time() - start
>>>
>>> ---
>>> gooli
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Come build with us! The BlackBerry(R) Developer Conference in SF, CA
>>> is the only developer event you need to attend this year. Jumpstart your
>>> developing skills, take BlackBerry mobile applications to market and stay
>>> ahead of the curve. Join us from November 9 - 12, 2009. Register now!
>>> http://p.sf.net/sfu/devconference
>>> _______________________________________________
>>> Jython-users mailing list
>>> Jython-users@...
>>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>>
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Come build with us! The BlackBerry(R) Developer Conference in SF, CA
>>> is the only developer event you need to attend this year. Jumpstart your
>>> developing skills, take BlackBerry mobile applications to market and stay
>>> ahead of the curve. Join us from November 9 - 12, 2009. Register now!
>>> http://p.sf.net/sfu/devconference
>>> _______________________________________________
>>> Jython-users mailing list
>>> Jython-users@...
>>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Come build with us! The BlackBerry(R) Developer Conference in SF, CA
>>> is the only developer event you need to attend this year. Jumpstart your
>>> developing skills, take BlackBerry mobile applications to market and stay
>>> ahead of the curve. Join us from November 9 - 12, 2009. Register now!
>>> http://p.sf.net/sfu/devconference
>>> _______________________________________________
>>> Jython-users mailing list
>>> Jython-users@...
>>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>>
>>>
>>
>> --
>> Jim Baker
>> jbaker@...
>>
>>
>
> ------------------------------------------------------------------------------
> Come build with us! The BlackBerry(R) Developer Conference in SF, CA
> is the only developer event you need to attend this year. Jumpstart your
> developing skills, take BlackBerry mobile applications to market and stay
> ahead of the curve. Join us from November 9 - 12, 2009. Register now!
> http://p.sf.net/sfu/devconference
> _______________________________________________
> Jython-users mailing list
> Jython-users@...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>

------------------------------------------------------------------------------
Come build with us! The BlackBerry(R) Developer Conference in SF, CA
is the only developer event you need to attend this year. Jumpstart your
developing skills, take BlackBerry mobile applications to market and stay
ahead of the curve. Join us from November 9 - 12, 2009. Register now!
http://p.sf.net/sfu/devconference
_______________________________________________
Jython-users mailing list
Jython-users@...
https://lists.sourceforge.net/lists/listinfo/jython-users

--
Jim Baker
jbaker@...

Re: BeautifulSoup is very slow with Jython

2009-11-03T07:40:13Z

Eli Golovinsky kirjoitti:
> Isn't CPython regex implementation in C? Couldn't Jython's regex
> implementation use the Java regular expression engine after (possibly)
> some simple translation from Python syntax to Java syntax?
>
>
Java's regular expressions have different semantics.
Jython's REs are notoriously slow, but iirc it's being worked on and I'd
expect faster REs in the 2.5 line of releases already.

> ---
> gooli
>
>
>
> 2009/11/3 Jim Baker <jbaker@...>:
>
>> At least the problem is in a very small part of the code (which seems to be
>> the usual case for something so bad). The goahead, parse_starttag, and
>> parse_endtag methods in HTMLParser all use regexes extensively, so that
>> would be my first guess. Our regex implementation is a direct port of
>> CPython's, but it's certainly possible that we have not applied the same
>> subsequent performance optimizations for support of such things as
>> lookahead.
>>
>> So now we need to profile a little deeper with something like YourKit to see
>> what's really happening.
>>
>> 2009/11/3 Sébastien Boisgérault <Sebastien.Boisgerault@...>
>>
>>> Sébastien Boisgérault a écrit :
>>>
>>> Eli Golovinsky a écrit :
>>>
>>>
>>> Hi,
>>>
>>> I just tried to run BeautifulSoup (3.1.0.1) with Jython (2.5.1) and I
>>> was amazed to see how much slower it was than CPython (2.6). Parsing a
>>> page (http://www.fixprotocol.org/specifications/fields/5000-5999) with
>>> CPython took just under a second (0.844 second to be exact). With
>>> Jython it took 564 seconds - almost 700 times as much.
>>>
>>> Can anyone confirm this result? It's doesn't seem reasonable for
>>> Jython to run 700 times slower than CPython.
>>>
>>>
>>> CPython is about x380 faster on my box.
>>>
>>> ouch ...
>>>
>>> SB
>>>
>>>
>>>
>>> Attached below the execution profiles with CPython and Jython.
>>>
>>> AFAICT BeautifulSoup code performs OK with Jython (a few seconds tops
>>> spent in handle_* methods), but the HTMLParser code (goahead, parse_*
>>> methods) it calls is painfully slow.
>>>
>>>
>>>
>>> CPYTHON
>>>
>>> Tue Nov 3 14:24:46 2009 results
>>>
>>> 903568 function calls (903519 primitive calls) in 6.512 CPU
>>> seconds
>>>
>>> Ordered by: cumulative time
>>> List reduced from 137 to 20 due to restriction <20>
>>>
>>> ncalls tottime percall cumtime percall filename:lineno(function)
>>> 1 0.000 0.000 6.512 6.512
>>> profile:0(BeautifulSoup(data))
>>> 1 0.000 0.000 6.512 6.512 <string>:1(<module>)
>>> 1 0.000 0.000 6.512 6.512
>>> BeautifulSoup.py:1164(__init__)
>>> 1 0.000 0.000 6.512 6.512 BeautifulSoup.py:1236(_feed)
>>> 1 0.000 0.000 6.512 6.512
>>> BeautifulSoup.py:1495(__init__)
>>> 1 0.000 0.000 6.484 6.484 HTMLParser.py:101(feed)
>>> 1 0.600 0.600 6.484 6.484 HTMLParser.py:132(goahead)
>>> 11083 0.556 0.000 3.784 0.000
>>> HTMLParser.py:224(parse_starttag)
>>> 11083 0.060 0.000 2.552 0.000
>>> BeautifulSoup.py:1013(handle_starttag)
>>> 11083 0.264 0.000 2.492 0.000
>>> BeautifulSoup.py:1397(unknown_starttag)
>>> 8351 0.240 0.000 1.404 0.000
>>> HTMLParser.py:305(parse_endtag)
>>> 8351 0.060 0.000 1.044 0.000
>>> BeautifulSoup.py:1019(handle_endtag)
>>> 8351 0.120 0.000 0.984 0.000
>>> BeautifulSoup.py:1427(unknown_endtag)
>>> 8349 0.484 0.000 0.912 0.000
>>> BeautifulSoup.py:1351(_smartPop)
>>> 11084 0.168 0.000 0.676 0.000
>>> BeautifulSoup.py:500(__init__)
>>> 12420 0.276 0.000 0.604 0.000
>>> BeautifulSoup.py:1329(_popToTag)
>>> 19441 0.216 0.000 0.528 0.000
>>> BeautifulSoup.py:1306(endData)
>>> 33250 0.244 0.000 0.368 0.000
>>> BeautifulSoup.py:1269(isSelfClosingTag)
>>> 66134 0.344 0.000 0.344 0.000 :0(match)
>>> 103566 0.280 0.000 0.280 0.000
>>> BeautifulSoup.py:554(__nonzero__)
>>>
>>> JYTHON
>>>
>>> Tue Nov 3 14:31:34 2009 results
>>>
>>> 383982 function calls (383944 primitive calls) in 390.007 CPU
>>> seconds
>>>
>>> Ordered by: cumulative time
>>> List reduced from 97 to 20 due to restriction <20>
>>>
>>> ncalls tottime percall cumtime percall filename:lineno(function)
>>> 1 0.003 0.003 390.007 390.007
>>> profile:0(BeautifulSoup(data))
>>> 1 0.000 0.000 390.004 390.004 <string>:0(<module>)
>>> 1 0.000 0.000 390.004 390.004
>>> BeautifulSoup.py:1495(__init__)
>>> 1 0.000 0.000 390.004 390.004
>>> BeautifulSoup.py:1164(__init__)
>>> 1 0.372 0.372 390.003 390.003 BeautifulSoup.py:1236(_feed)
>>> 1 0.000 0.000 389.553 389.553 HTMLParser.py:101(feed)
>>> 1 159.714 159.714 389.552 389.552 HTMLParser.py:132(goahead)
>>> 11083 112.086 0.010 159.921 0.014
>>> HTMLParser.py:224(parse_starttag)
>>> 8351 68.361 0.008 69.394 0.008
>>> HTMLParser.py:305(parse_endtag)
>>> 11083 45.443 0.004 45.443 0.004
>>> HTMLParser.py:275(check_for_whole_start_tag)
>>> 11083 0.084 0.000 2.363 0.000
>>> BeautifulSoup.py:1013(handle_starttag)
>>> 11083 0.536 0.000 2.278 0.000
>>> BeautifulSoup.py:1397(unknown_starttag)
>>> 8351 0.051 0.000 1.009 0.000
>>> BeautifulSoup.py:1019(handle_endtag)
>>> 8351 0.077 0.000 0.958 0.000
>>> BeautifulSoup.py:1427(unknown_endtag)
>>> 19441 0.438 0.000 0.761 0.000
>>> BeautifulSoup.py:1306(endData)
>>> 11084 0.374 0.000 0.726 0.000
>>> BeautifulSoup.py:500(__init__)
>>> 8349 0.498 0.000 0.630 0.000
>>> BeautifulSoup.py:1351(_smartPop)
>>> 38924 0.435 0.000 0.435 0.000 markupbase.py:49(updatepos)
>>> 12420 0.251 0.000 0.334 0.000
>>> BeautifulSoup.py:1329(_popToTag)
>>> 17252 0.220 0.000 0.245 0.000 BeautifulSoup.py:118(setup)
>>>
>>>
>>>
>>>
>>> Perhaps something is
>>> wrong with my setup.
>>>
>>> Here's the code I used:
>>>
>>> import time
>>> from BeautifulSoup import BeautifulSoup
>>> data = open("fix-5000-5999.html").read()
>>> start = time.time()
>>> soup = BeautifulSoup(data)
>>> print time.time() - start
>>>
>>> ---
>>> gooli
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Come build with us! The BlackBerry(R) Developer Conference in SF, CA
>>> is the only developer event you need to attend this year. Jumpstart your
>>> developing skills, take BlackBerry mobile applications to market and stay
>>> ahead of the curve. Join us from November 9 - 12, 2009. Register now!
>>> http://p.sf.net/sfu/devconference
>>> _______________________________________________
>>> Jython-users mailing list
>>> Jython-users@...
>>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>>
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Come build with us! The BlackBerry(R) Developer Conference in SF, CA
>>> is the only developer event you need to attend this year. Jumpstart your
>>> developing skills, take BlackBerry mobile applications to market and stay
>>> ahead of the curve. Join us from November 9 - 12, 2009. Register now!
>>> http://p.sf.net/sfu/devconference
>>> _______________________________________________
>>> Jython-users mailing list
>>> Jython-users@...
>>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Come build with us! The BlackBerry(R) Developer Conference in SF, CA
>>> is the only developer event you need to attend this year. Jumpstart your
>>> developing skills, take BlackBerry mobile applications to market and stay
>>> ahead of the curve. Join us from November 9 - 12, 2009. Register now!
>>> http://p.sf.net/sfu/devconference
>>> _______________________________________________
>>> Jython-users mailing list
>>> Jython-users@...
>>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>>
>>>
>>
>> --
>> Jim Baker
>> jbaker@...
>>
>>
>
> ------------------------------------------------------------------------------
> Come build with us! The BlackBerry(R) Developer Conference in SF, CA
> is the only developer event you need to attend this year. Jumpstart your
> developing skills, take BlackBerry mobile applications to market and stay
> ahead of the curve. Join us from November 9 - 12, 2009. Register now!
> http://p.sf.net/sfu/devconference
> _______________________________________________
> Jython-users mailing list
> Jython-users@...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>

Re: BeautifulSoup is very slow with Jython

2009-11-03T07:07:07Z

Isn't CPython regex implementation in C? Couldn't Jython's regex
implementation use the Java regular expression engine after (possibly)
some simple translation from Python syntax to Java syntax?

---
gooli

2009/11/3 Jim Baker <jbaker@...>:

> At least the problem is in a very small part of the code (which seems to be
> the usual case for something so bad). The goahead, parse_starttag, and
> parse_endtag methods in HTMLParser all use regexes extensively, so that
> would be my first guess. Our regex implementation is a direct port of
> CPython's, but it's certainly possible that we have not applied the same
> subsequent performance optimizations for support of such things as
> lookahead.
>
> So now we need to profile a little deeper with something like YourKit to see
> what's really happening.
>
> 2009/11/3 Sébastien Boisgérault <Sebastien.Boisgerault@...>
>>
>> Sébastien Boisgérault a écrit :
>>
>> Eli Golovinsky a écrit :
>>
>>
>> Hi,
>>
>> I just tried to run BeautifulSoup (3.1.0.1) with Jython (2.5.1) and I
>> was amazed to see how much slower it was than CPython (2.6). Parsing a
>> page (http://www.fixprotocol.org/specifications/fields/5000-5999) with
>> CPython took just under a second (0.844 second to be exact). With
>> Jython it took 564 seconds - almost 700 times as much.
>>
>> Can anyone confirm this result? It's doesn't seem reasonable for
>> Jython to run 700 times slower than CPython.
>>
>>
>> CPython is about x380 faster on my box.
>>
>> ouch ...
>>
>> SB
>>
>>
>>
>> Attached below the execution profiles with CPython and Jython.
>>
>> AFAICT BeautifulSoup code performs OK with Jython (a few seconds tops
>> spent in handle_* methods), but the HTMLParser code (goahead, parse_*
>> methods) it calls is painfully slow.
>>
>>
>>
>> CPYTHON
>>
>> Tue Nov 3 14:24:46 2009    results
>>
>>          903568 function calls (903519 primitive calls) in 6.512 CPU
>> seconds
>>
>>    Ordered by: cumulative time
>>    List reduced from 137 to 20 due to restriction <20>
>>
>>    ncalls tottime percall cumtime percall filename:lineno(function)
>>         1    0.000    0.000    6.512    6.512
>> profile:0(BeautifulSoup(data))
>>         1    0.000    0.000    6.512    6.512 <string>:1(<module>)
>>         1    0.000    0.000    6.512    6.512
>> BeautifulSoup.py:1164(__init__)
>>         1    0.000    0.000    6.512    6.512 BeautifulSoup.py:1236(_feed)
>>         1    0.000    0.000    6.512    6.512
>> BeautifulSoup.py:1495(__init__)
>>         1    0.000    0.000    6.484    6.484 HTMLParser.py:101(feed)
>>         1    0.600    0.600    6.484    6.484 HTMLParser.py:132(goahead)
>>     11083    0.556    0.000    3.784    0.000
>> HTMLParser.py:224(parse_starttag)
>>     11083    0.060    0.000    2.552    0.000
>> BeautifulSoup.py:1013(handle_starttag)
>>     11083    0.264    0.000    2.492    0.000
>> BeautifulSoup.py:1397(unknown_starttag)
>>      8351    0.240    0.000    1.404    0.000
>> HTMLParser.py:305(parse_endtag)
>>      8351    0.060    0.000    1.044    0.000
>> BeautifulSoup.py:1019(handle_endtag)
>>      8351    0.120    0.000    0.984    0.000
>> BeautifulSoup.py:1427(unknown_endtag)
>>      8349    0.484    0.000    0.912    0.000
>> BeautifulSoup.py:1351(_smartPop)
>>     11084    0.168    0.000    0.676    0.000
>> BeautifulSoup.py:500(__init__)
>>     12420    0.276    0.000    0.604    0.000
>> BeautifulSoup.py:1329(_popToTag)
>>     19441    0.216    0.000    0.528    0.000
>> BeautifulSoup.py:1306(endData)
>>     33250    0.244    0.000    0.368    0.000
>> BeautifulSoup.py:1269(isSelfClosingTag)
>>     66134    0.344    0.000    0.344    0.000 :0(match)
>>    103566    0.280    0.000    0.280    0.000
>> BeautifulSoup.py:554(__nonzero__)
>>
>> JYTHON
>>
>> Tue Nov 3 14:31:34 2009    results
>>
>>          383982 function calls (383944 primitive calls) in 390.007 CPU
>> seconds
>>
>>    Ordered by: cumulative time
>>    List reduced from 97 to 20 due to restriction <20>
>>
>>    ncalls tottime percall cumtime percall filename:lineno(function)
>>         1    0.003    0.003 390.007 390.007
>> profile:0(BeautifulSoup(data))
>>         1    0.000    0.000 390.004 390.004 <string>:0(<module>)
>>         1    0.000    0.000 390.004 390.004
>> BeautifulSoup.py:1495(__init__)
>>         1    0.000    0.000 390.004 390.004
>> BeautifulSoup.py:1164(__init__)
>>         1    0.372    0.372 390.003 390.003 BeautifulSoup.py:1236(_feed)
>>         1    0.000    0.000 389.553 389.553 HTMLParser.py:101(feed)
>>         1 159.714 159.714 389.552 389.552 HTMLParser.py:132(goahead)
>>     11083 112.086    0.010 159.921    0.014
>> HTMLParser.py:224(parse_starttag)
>>      8351   68.361    0.008   69.394    0.008
>> HTMLParser.py:305(parse_endtag)
>>     11083   45.443    0.004   45.443    0.004
>> HTMLParser.py:275(check_for_whole_start_tag)
>>     11083    0.084    0.000    2.363    0.000
>> BeautifulSoup.py:1013(handle_starttag)
>>     11083    0.536    0.000    2.278    0.000
>> BeautifulSoup.py:1397(unknown_starttag)
>>      8351    0.051    0.000    1.009    0.000
>> BeautifulSoup.py:1019(handle_endtag)
>>      8351    0.077    0.000    0.958    0.000
>> BeautifulSoup.py:1427(unknown_endtag)
>>     19441    0.438    0.000    0.761    0.000
>> BeautifulSoup.py:1306(endData)
>>     11084    0.374    0.000    0.726    0.000
>> BeautifulSoup.py:500(__init__)
>>      8349    0.498    0.000    0.630    0.000
>> BeautifulSoup.py:1351(_smartPop)
>>     38924    0.435    0.000    0.435    0.000 markupbase.py:49(updatepos)
>>     12420    0.251    0.000    0.334    0.000
>> BeautifulSoup.py:1329(_popToTag)
>>     17252    0.220    0.000    0.245    0.000 BeautifulSoup.py:118(setup)
>>
>>
>>
>>
>> Perhaps something is
>> wrong with my setup.
>>
>> Here's the code I used:
>>
>> import time
>> from BeautifulSoup import BeautifulSoup
>> data = open("fix-5000-5999.html").read()
>> start = time.time()
>> soup = BeautifulSoup(data)
>> print time.time() - start
>>
>> ---
>> gooli
>>
>>
>> ------------------------------------------------------------------------------
>> Come build with us! The BlackBerry(R) Developer Conference in SF, CA
>> is the only developer event you need to attend this year. Jumpstart your
>> developing skills, take BlackBerry mobile applications to market and stay
>> ahead of the curve. Join us from November 9 - 12, 2009. Register now!
>> http://p.sf.net/sfu/devconference
>> _______________________________________________
>> Jython-users mailing list
>> Jython-users@...
>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>
>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>> Come build with us! The BlackBerry(R) Developer Conference in SF, CA
>> is the only developer event you need to attend this year. Jumpstart your
>> developing skills, take BlackBerry mobile applications to market and stay
>> ahead of the curve. Join us from November 9 - 12, 2009. Register now!
>> http://p.sf.net/sfu/devconference
>> _______________________________________________
>> Jython-users mailing list
>> Jython-users@...
>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>> Come build with us! The BlackBerry(R) Developer Conference in SF, CA
>> is the only developer event you need to attend this year. Jumpstart your
>> developing skills, take BlackBerry mobile applications to market and stay
>> ahead of the curve. Join us from November 9 - 12, 2009. Register now!
>> http://p.sf.net/sfu/devconference
>> _______________________________________________
>> Jython-users mailing list
>> Jython-users@...
>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>
>
>
>
> --
> Jim Baker
> jbaker@...
>