jython-users — Discussion of and questions about using Jython

Re: [Jython-users] Newbie question

[James H. <jh...@pa...>]

Thank you for the clear explanation... I'll look forward to the new version!

James

At 6/18/2001 06:22 PM +0000, Finn Bock wrote:
>On Fri, 15 Jun 2001 16:28:33 -0600, you wrote:
>
> >Hi,
> >
> >So far I think Jython is pretty cool... but I've got a problem/question...
> >
> >First off, here's my sample code:
> >
> >...
> >
> >My problem is that I really need the method
> >
> >   void setAttribute(String key, Object attr)
> >
> >to be this:
> >
> >   void setAttribute(String key, Serializable attr)
>
>Jython-2.0 did not handle Serializable argument very well. This have
>been fixed in jython-2.1a1 where your example works.
>
> >Can someone explain this to me?
>
>When the python code
>
>   theMap.setAttribute("crapKey", "crapVal")
>
>is executed jython is faced with a choice. Should it insert the the
>PyString instance that wraps "crapVal" or should it unwrap the string
>and insert the java.lang.String instance. If the method signature uses
>Object, jython always unwraps, which is why that works in you example.
>If the method signature used Serializable, Jython-2.0 would check and
>see that PyString implement Serializable (it does) and pass over the
>PyString wrapper. In Jython-2.1a1, a Serializable signature will cause
>unwrapping of string, ints, longs, floats, classes and instances.
>
>regards,
>finn

[Jython-users] Python to native compilation via java?

[VanL <va...@li...>]

Hello,

(Cross-posted by request from the python-tutor mailing list)

I was reading about the new gcc 3.0 release, and something that caught 
my eye:

"""
The GNU Compiler for the Java Programming Language
What is GCJ?

GCJ is a portable, optimizing, ahead-of-time compiler for the Java 
Programming Language. It can compile:

    * Java source code directly to native machine code,
    * Java source code to Java bytecode (class files),
    * and Java bytecode to native machine code.

Compiled applications are linked with the GCJ runtime, libgcj, which 
provides the core class libraries, a garbage collector, and a bytecode 
interpreter. libgcj can dynamically load and interpret class files, 
resulting in mixed compiled/interpreted applications.
"""

Would code get any significant speedup by going jython -> .class files 
-> native? Is it possible?  And does jython compile under gcj?

Thanks,

Van

RE: [Jython-users] Re: JDK 1.1.8 [was JDK Recommendation]

[Don C. <don...@em...>]

to enable the Java console in IE 5
Tools -> Internet Options -> Advanced [Tab]
Go to the Microsoft VM section and check "Java Logging Enabled"
restart IE
There should be a java console menu under the view menu

The security problem with IE is the applet is probably trying to read a
configuration file on the hard drive?  A stack trace may tell you more.

java.util.HashMap is JDK 1.2 use java.util.HashTable


> -----Original Message-----
> From: ron greene [mailto:rg...@un...]
> Sent: Monday, June 18, 2001 4:54 PM
> To: jyt...@li...
> Subject: [Jython-users] Re: JDK 1.1.8 [was JDK Recommendation]
> 
> 
>     I downloaded JDK 1.1.8 as suggested and eventually was 
> able to produce a
> simple applet that extends one of my classes and loads in Netscape
> (eventually!) and IE.  Each gave errors, however, described 
> below.  Can someone
> tell me why these are occuring, and what I should do about them?
> 
> Under IE,  I don't know how to capture the output from the 
> Java Console, but
> the messages were
> 
> com.ms.security.SecurityExceptionEx[org/python/core/Py.initPro
> perties]:  Unable
> to access system properties.
> 
> as well as a message indicating an inability to find the 
> java.util.HashMap
> class (as with Netscape, below)
> 
> 
> 
> Under Netscape:
> Netscape Communications Corporation -- Java 1.1.5
> 
> Type '?' for options.
> 
> Symantec Java! ByteCode Compiler Version 210.065
> Copyright (C) 1996-97 Symantec Corporation
> # Error: Invalid digital signature file (-7885)
> # jar file: C:\DOCUME~1\ron\LOCALS~1\Temp\jzipB72T.TMP
> # path:     C:\DOCUME~1\ron\LOCALS~1\Temp\jzipB72T.TMP
> # Error: internal error - error in manifest file (-1)
> # jar file: C:\DOCUME~1\ron\LOCALS~1\Temp\jzipB72T.TMP
> # path:     /D|/HomePage/Illuminations/Java/
> # Verifier error 
> org/python/core/InternalTables2.commitTemp()V: Cannot find
> class java/util/HashMap
> # Verifier error
> org/python/core/MakeProxies.makeProxy(Ljava/lang/Class;Ljava/u
> til/Vector;Ljava/lang/String;Lorg/python/core/PyObject;)Ljava/
> lang/Class;:
> Cannot find class org/python/compiler/ProxyMaker
> java.lang.NullPointerException: invalid peer
> 
>   at java.awt.Component.hide(Compiled Code)
> 
> * at 
> netscape.applet.DerivedAppletFrame$DestroyAppletEvent.dispatch
> (Compiled
> Code)
> 
>   at 
> java.awt.EventDispatchThread$EventPump.dispatchEvents(Compiled Code)
> 
>   at java.awt.EventDispatchThread.run(Compiled Code)
> 
>   at 
> netscape.applet.DerivedAppletFrame$AppletEventDispatchThread.r
> un(Compiled
> Code)
> 
> 
> 
> >
> >
> > Message: 5
> > From: Don Coleman <don...@em...>
> > To: 'ron greene' <rg...@un...>, 
> jyt...@li...
> > Subject: RE: [Jython-users] JDK recommendation
> > Date: Mon, 18 Jun 2001 09:11:13 -0400
> >
> > You should still be able to download JDK1.1.8_007 from Sun, 
> but I think
> > 1.3.1 will work fine as long as you don't use any of the 
> 1.2 specific
> > classes (e.g. Swing, Collections, etc).
> >
> > > -----Original Message-----
> > > From: ron greene [mailto:rg...@un...]
> > > Sent: Monday, June 18, 2001 10:04 AM
> > > To: jyt...@li...
> > > Subject: [Jython-users] JDK recommendation
> > >
> > >
> > > I'm a new would-be convert to Jython.  I've been developing a
> > > series of
> > > Java applets for physics education, and think that I would be more
> > > productive (eventually) with Jython.  I got my Jython 
> installation up
> > > and running with Sun's SDK 1.3.1, but then discovered
> > > (obviously should
> > > have thought about this) that what I produce with it does not
> > > run under
> > > IE 5.x or Netscape 4.7x, the two most common browsers for 
> my audience.
> > > I need a recommendation for a 1.1 JDK that someone has 
> actually tested
> > > with the above browsers.  Thanks.
> > >
> > >         ron greene
> > >
> > >
> 
> 
> _______________________________________________
> Jython-users mailing list
> Jyt...@li...
> http://lists.sourceforge.net/lists/listinfo/jython-users
> 
> 

Re: [Jython-users] Re: JDK 1.1.8 [was JDK Recommendation]

[D-Man <ds...@ri...>]

On Mon, Jun 18, 2001 at 03:53:49PM -0500, ron greene wrote:
| I downloaded JDK 1.1.8 as suggested and eventually was able to
| produce a simple applet that extends one of my classes and loads in
| Netscape (eventually!) and IE.  Each gave errors, however, described
| below.  Can someone tell me why these are occuring, and what I
| should do about them?
| 
| Under IE,  I don't know how to capture the output from the Java
| Console, but the messages were
| 
| com.ms.security.SecurityExceptionEx[org/python/core/Py.initProperties]:  Unable
| to access system properties.

Not sure about this.

| as well as a message indicating an inability to find the java.util.HashMap
| class (as with Netscape, below)

http://java.sun.com/products/jdk/1.2/docs/api/java/util/HashMap.html

Since:
    JDK1.2


java.util.HashMap didn't exist until Java 2.  Use java.util.Hashtable instead.


| Under Netscape:
| Netscape Communications Corporation -- Java 1.1.5

_old_ JVM ;-).

Netscape 6 uses JDK 1.3.0 (not that you can tell your users to upgrade
their web browser anyways).

-D

[Jython-users] Re: JDK 1.1.8 [was JDK Recommendation]

[ron g. <rg...@un...>]

    I downloaded JDK 1.1.8 as suggested and eventually was able to produce a
simple applet that extends one of my classes and loads in Netscape
(eventually!) and IE.  Each gave errors, however, described below.  Can someone
tell me why these are occuring, and what I should do about them?

Under IE,  I don't know how to capture the output from the Java Console, but
the messages were

com.ms.security.SecurityExceptionEx[org/python/core/Py.initProperties]:  Unable
to access system properties.

as well as a message indicating an inability to find the java.util.HashMap
class (as with Netscape, below)



Under Netscape:
Netscape Communications Corporation -- Java 1.1.5

Type '?' for options.

Symantec Java! ByteCode Compiler Version 210.065
Copyright (C) 1996-97 Symantec Corporation
# Error: Invalid digital signature file (-7885)
# jar file: C:\DOCUME~1\ron\LOCALS~1\Temp\jzipB72T.TMP
# path:     C:\DOCUME~1\ron\LOCALS~1\Temp\jzipB72T.TMP
# Error: internal error - error in manifest file (-1)
# jar file: C:\DOCUME~1\ron\LOCALS~1\Temp\jzipB72T.TMP
# path:     /D|/HomePage/Illuminations/Java/
# Verifier error org/python/core/InternalTables2.commitTemp()V: Cannot find
class java/util/HashMap
# Verifier error
org/python/core/MakeProxies.makeProxy(Ljava/lang/Class;Ljava/util/Vector;Ljava/lang/String;Lorg/python/core/PyObject;)Ljava/lang/Class;:
Cannot find class org/python/compiler/ProxyMaker
java.lang.NullPointerException: invalid peer

  at java.awt.Component.hide(Compiled Code)

* at netscape.applet.DerivedAppletFrame$DestroyAppletEvent.dispatch(Compiled
Code)

  at java.awt.EventDispatchThread$EventPump.dispatchEvents(Compiled Code)

  at java.awt.EventDispatchThread.run(Compiled Code)

  at netscape.applet.DerivedAppletFrame$AppletEventDispatchThread.run(Compiled
Code)



>
>
> Message: 5
> From: Don Coleman <don...@em...>
> To: 'ron greene' <rg...@un...>, jyt...@li...
> Subject: RE: [Jython-users] JDK recommendation
> Date: Mon, 18 Jun 2001 09:11:13 -0400
>
> You should still be able to download JDK1.1.8_007 from Sun, but I think
> 1.3.1 will work fine as long as you don't use any of the 1.2 specific
> classes (e.g. Swing, Collections, etc).
>
> > -----Original Message-----
> > From: ron greene [mailto:rg...@un...]
> > Sent: Monday, June 18, 2001 10:04 AM
> > To: jyt...@li...
> > Subject: [Jython-users] JDK recommendation
> >
> >
> > I'm a new would-be convert to Jython.  I've been developing a
> > series of
> > Java applets for physics education, and think that I would be more
> > productive (eventually) with Jython.  I got my Jython installation up
> > and running with Sun's SDK 1.3.1, but then discovered
> > (obviously should
> > have thought about this) that what I produce with it does not
> > run under
> > IE 5.x or Netscape 4.7x, the two most common browsers for my audience.
> > I need a recommendation for a 1.1 JDK that someone has actually tested
> > with the above browsers.  Thanks.
> >
> >         ron greene
> >
> >

Re: [Jython-users] Newbie question

[<bc...@wo...>]

On Fri, 15 Jun 2001 16:28:33 -0600, you wrote:

>Hi,
>
>So far I think Jython is pretty cool... but I've got a problem/question...
>
>First off, here's my sample code:
>
>...
>
>My problem is that I really need the method
>
>   void setAttribute(String key, Object attr)
>
>to be this:
>
>   void setAttribute(String key, Serializable attr)

Jython-2.0 did not handle Serializable argument very well. This have
been fixed in jython-2.1a1 where your example works.

>Can someone explain this to me? 

When the python code

  theMap.setAttribute("crapKey", "crapVal")

is executed jython is faced with a choice. Should it insert the the
PyString instance that wraps "crapVal" or should it unwrap the string
and insert the java.lang.String instance. If the method signature uses
Object, jython always unwraps, which is why that works in you example.
If the method signature used Serializable, Jython-2.0 would check and
see that PyString implement Serializable (it does) and pass over the
PyString wrapper. In Jython-2.1a1, a Serializable signature will cause
unwrapping of string, ints, longs, floats, classes and instances.

regards,
finn

Re: [Jython-users] JDK recommendation

[Neil R. <ne...@bl...>]

Have you tried Sun's Java plugin?

http://java.sun.com/products/plugin/index.html

Neil


Computer Science is no more about computers than
astronomy is about telescopes. -- E. W. Dijkstra 


On Mon, 18 Jun 2001, ron greene wrote:

> I'm a new would-be convert to Jython.  I've been developing a series of
> Java applets for physics education, and think that I would be more
> productive (eventually) with Jython.  I got my Jython installation up
> and running with Sun's SDK 1.3.1, but then discovered  (obviously should
> have thought about this) that what I produce with it does not run under
> IE 5.x or Netscape 4.7x, the two most common browsers for my audience.
> I need a recommendation for a 1.1 JDK that someone has actually tested
> with the above browsers.  Thanks.
> 
>         ron greene
> 
> 
> _______________________________________________
> Jython-users mailing list
> Jyt...@li...
> http://lists.sourceforge.net/lists/listinfo/jython-users
> 

RE: [Jython-users] JDK recommendation

[Don C. <don...@em...>]

You should still be able to download JDK1.1.8_007 from Sun, but I think
1.3.1 will work fine as long as you don't use any of the 1.2 specific
classes (e.g. Swing, Collections, etc).

> -----Original Message-----
> From: ron greene [mailto:rg...@un...]
> Sent: Monday, June 18, 2001 10:04 AM
> To: jyt...@li...
> Subject: [Jython-users] JDK recommendation
> 
> 
> I'm a new would-be convert to Jython.  I've been developing a 
> series of
> Java applets for physics education, and think that I would be more
> productive (eventually) with Jython.  I got my Jython installation up
> and running with Sun's SDK 1.3.1, but then discovered  
> (obviously should
> have thought about this) that what I produce with it does not 
> run under
> IE 5.x or Netscape 4.7x, the two most common browsers for my audience.
> I need a recommendation for a 1.1 JDK that someone has actually tested
> with the above browsers.  Thanks.
> 
>         ron greene
> 
> 
> _______________________________________________
> Jython-users mailing list
> Jyt...@li...
> http://lists.sourceforge.net/lists/listinfo/jython-users
> 
> 

[Jython-users] JDK recommendation

[ron g. <rg...@un...>]

I'm a new would-be convert to Jython.  I've been developing a series of
Java applets for physics education, and think that I would be more
productive (eventually) with Jython.  I got my Jython installation up
and running with Sun's SDK 1.3.1, but then discovered  (obviously should
have thought about this) that what I produce with it does not run under
IE 5.x or Netscape 4.7x, the two most common browsers for my audience.
I need a recommendation for a 1.1 JDK that someone has actually tested
with the above browsers.  Thanks.

        ron greene

[Jython-users] jython 2.0 vs jython 2.1a1

[HEINECKE J. FTRD/DMI/L. <joh...@rd...>]

Hi,

I try to find a problem in my jythonized python code.
It runs fine in python, but something's going wrong using
the same .py-files with jython

First I thought trying jython-2.1a1, maybe it works, but
with jython-2.1a1 the compile fails saying 

1  ./jpywork/repr.java:1: package org.python.core does not exist

This I do not understand since, I put both jython-version in different
directories. I checked the jython and jythonc scripts and teh registry,
everywhere the dirs seem to be correct. Both use java 1.3.

Does any of you have an idea, why the compiler does not seem to find
jython.jar ?

Thanks
Johannes

-- 
Johannes Heinecke
Email: joh...@fr...

RE: [Jython-users] IDE for Jython

[Danny A. <dan...@bt...>]

The NetBeans Java IDE has a Jython module which offers some support,
including easy editing and running, though the IDE very resource-hungry
(they recommend 256MB RAM). If you are wanting to incorporate Java classes
then this would certainly be a good choice.
www.netbeans.org



---
Danny Ayers
http://www.isacat.net

>-----Original Message-----
>From: jyt...@li...
>[mailto:jyt...@li...]On Behalf Of Paolo
>Tortora
>Sent: 18 June 2001 08:41
>To: jyt...@li...
>Subject: [Jython-users] IDE for Jython
>
>
>
>
>I know there some interesting IDe for python.
>For jython is slightly different beacuse it is java based.
>
>Anyway, does anyone know whether there is some IDE for jython ?
>
>Thank you.
>Paolo.
>
>
>
>_______________________________________________
>Jython-users mailing list
>Jyt...@li...
>http://lists.sourceforge.net/lists/listinfo/jython-users

[Jython-users] IDE for Jython

[Paolo T. <Pao...@ma...>]

I know there some interesting IDe for python.
For jython is slightly different beacuse it is java based.

Anyway, does anyone know whether there is some IDE for jython ?

Thank you.
Paolo.

[Jython-users] Jython working directory

[Scott K. <sc...@sc...>]

Sorry for the crosspost, but I am not sure if Jython or BSF is the place
to ask.

I have a server application that uses BSF with Tomcat to do some custom
scripting (Jython).  When the scripts reside in what Tomcat considers
the root (working?) directory, everything runs just fine.  The scripts
just get executed by their name with no path information required.

I need to move these scripts into sub-directories under that root. 
There is no problem invoking a script in any sub-directory, but the
script cannot 'see' the other required scripts in the same directory for
it's imports.  The executed script is looking for the other scripts in
the previously mentioned root directory no matter where it resides.  How
to force the Jython interpreter to have another working directory on a
per-session basis?  Thanks.
-- 
Scott Knight  mailto:sc...@sc...

[Jython-users] jsp-jython

[Carlos G. A. <ga...@to...>]

Hi there,

     Steve and me have the intention of implementing Jython as a language
for jsp. We will be implementing it at the tomcat project.
    Has anybody started a similar proyect? I would like to now.
    Now we are studing how to implement it and we will be starting soon.

Chau,

Gaston

RE: [Jython-users] Newbie question

[Danny A. <dan...@bt...>]

I'm guessing, but it might be worth trying to cast the Serializable into an
object before putting it in the hashtable.

---
Danny Ayers
http://www.isacat.net

>-----Original Message-----
>From: jyt...@li...
>[mailto:jyt...@li...]On Behalf Of James
>House
>Sent: 15 June 2001 23:29
>To: jyt...@li...
>Subject: [Jython-users] Newbie question
>
>
>
>Hi,
>
>So far I think Jython is pretty cool... but I've got a problem/question...
>
>First off, here's my sample code:
>
>"MyMap.java"
>===========================================
>import java.io.Serializable;
>import java.util.HashMap;
>
>public
>class MyMap
>{
>   private HashMap hash = new HashMap(10);
>
>   public
>   void MyMap()
>   {
>   }
>
>   public
>   void setAttribute(String key, Object attr)
>   {
>     hash.put(key, attr);
>   }
>
>   public
>   Object getAtrribute(String key)
>   {
>     return hash.get(key);
>   }
>
>   public static
>   void main(String[] args)
>   {
>     Properties props = new Properties();
>     props.setProperty("jython.home", "/jython");
>     PythonInterpreter.initialize(System.getProperties(),props,new
>String[0]);
>
>     MyMap theMap = new MyMap();
>
>     theMap.setAttribute("myAttr", "myAttr is cool");
>
>     PythonInterpreter interp = new PythonInterpreter();
>     interp.set("theMap", theMap);
>
>     interp.exec("print theMap.getAtrribute(\"myAttr\")");
>     interp.exec("theMap.setAttribute(\"crapKey\", \"crapVal\")");
>
>     MyMap newMap = (MyMap)interp.get("theMap", MyMap.class);
>     System.err.println("GotBack: " +
>(String)newMap.getAtrribute("crapKey"));
>
>   }
>}
>
>========================================
>
>This works just fine, as intended by printing
>the output:
>
>	myAttr is cool
>	GotBack: crapVal
>
>
>My problem is that I really need the method
>
>   void setAttribute(String key, Object attr)
>
>to be this:
>
>   void setAttribute(String key, Serializable attr)
>
>But when I make that change, rather than the
>expected output, I get:
>
>	myAttr is cool
>	Exception in thread "main" java.lang.ClassCastException:
>org.python.core.PyString
>         		at
>com.partnet.prototypes.mops.unittest.MyMap.main(MyMap.java:72)
>
>
>Can someone explain this to me? I really need
>to restrict the input objects to be of type Serializable.
>
>Thanks,
>James
>
>
>_______________________________________________
>Jython-users mailing list
>Jyt...@li...
>http://lists.sourceforge.net/lists/listinfo/jython-users

[Jython-users] Newbie question

[James H. <jh...@pa...>]

Hi,

So far I think Jython is pretty cool... but I've got a problem/question...

First off, here's my sample code:

"MyMap.java"
===========================================
import java.io.Serializable;
import java.util.HashMap;

public
class MyMap
{
   private HashMap hash = new HashMap(10);

   public
   void MyMap()
   {
   }

   public
   void setAttribute(String key, Object attr)
   {
     hash.put(key, attr);
   }

   public
   Object getAtrribute(String key)
   {
     return hash.get(key);
   }

   public static
   void main(String[] args)
   {
     Properties props = new Properties();
     props.setProperty("jython.home", "/jython");
     PythonInterpreter.initialize(System.getProperties(),props,new String[0]);

     MyMap theMap = new MyMap();

     theMap.setAttribute("myAttr", "myAttr is cool");

     PythonInterpreter interp = new PythonInterpreter();
     interp.set("theMap", theMap);

     interp.exec("print theMap.getAtrribute(\"myAttr\")");
     interp.exec("theMap.setAttribute(\"crapKey\", \"crapVal\")");

     MyMap newMap = (MyMap)interp.get("theMap", MyMap.class);
     System.err.println("GotBack: " +  (String)newMap.getAtrribute("crapKey"));

   }
}

========================================

This works just fine, as intended by printing
the output:

	myAttr is cool
	GotBack: crapVal


My problem is that I really need the method

   void setAttribute(String key, Object attr)

to be this:

   void setAttribute(String key, Serializable attr)

But when I make that change, rather than the
expected output, I get:

	myAttr is cool
	Exception in thread "main" java.lang.ClassCastException: 
org.python.core.PyString
         		at com.partnet.prototypes.mops.unittest.MyMap.main(MyMap.java:72)


Can someone explain this to me? I really need
to restrict the input objects to be of type Serializable.

Thanks,
James

[Jython-users] load_module() in Jython

[Gerry W. <gw...@po...>]

HI,
I have successfully used CPython's imp.load_module() in the past to load 
Python code on the fly.  This has been invaluable for lots of reasons 
including the ability to introduce modules dynamically into a running system. 
 The same code will not work with Jython because Jython lacks the 
imp.load_module() method, and the comment for the module states that the 
methods implemented there are those that, in the writer's words, "can" be 
implemented under J(P)ython.  Is this true?

I would appreciate any help in doing what the CPython load_module() provides 
under Jython.  I'm sure that my lack of knowledge of Jython's import code is 
the problem - there's probably a solution so easy that I'm not even seeing 
it.  The archives don't seem to have anything related.  The import-sig 
postings haven't helped yet.  
On bended knee (!),
Gerry 

Re: [Jython-users] strange warning, but what does it mean?

[D-Man <ds...@ri...>]

On Wed, Jun 13, 2001 at 11:50:07AM -0600, Benjamin Collar wrote:
| Hi there,
| 
| I'm getting a warning I haven't seen before. Can someone tell me exactly
| what it means?
| 
| /home/bcollar/work/ecommerce/AppTester.py:4: SyntaxWarning: local name
| 'self' in '__init__' shadows use as global in nested scopes
|   def __init__(self, *TestClasses):

You have something like :


######## a module

self = "some value"

print id( self )

class Foo :
    def __init__( self , *TestClasses ) :
        print id( self )


The 2 'print' lines will print different things -- the 'self' inside
the __init__ function is a different 'self' than outside the function.

The solution is to change the name of one or more of them.  It is also
conceivable that you have

class Foo :
    def func( self ) :
        class Bar :
            def __init__( self ) :
                pass

which would cause the same problem, when nested_scopes are used.  If
you show the rest of the code, then it will be more obvious what is
really causing the warning message, and it will be easier to suggest
alternative coding/naming styles.

-D

[Jython-users] jythonc to build an application

[Sells, F. <fr...@ad...>]

I have an application that uses swing and jdbc and works quite well under
jython.

I would like to create a jar file of that application.  I can get jythonc to
run to completion without errors, but I cannot run the application.  (output
attached)

I'm sure I'm missing something basic.  Here's my first class (i.e. the one I
use to start it all).

are there any examples or documentation of using jythonc to build an
application?

Re: [Jython-users] Is Jython compatible with the GPL?

[<bc...@wo...>]

[Steven M. Castellotti]

>Subject: Is Jython compatible with the GPL?

I'm not a lawyer with specialty in GPL but I don't think so.

>	Ok, I don't mean to start a license war here, but I have written a
>suite of programs (half in java, half in python) that use a pair of
>jython scripts to convert data between the two, and would like to
>distribute my software without breaking any laws.

If you can't distribute jython scripts with your software, then it is
certainly not because of the jython licenses.

>	Here's a couple of scenarios:
>
> ...
>
>	Can anyone tell me which of the above three options (or feel free to
>suggest an alternative) will leave me in the clear?

The jython license grants you the right to do each of these scenarios.
If you fear that GPL may prevent you from do so, I advise you to seek
help from someone who know GPL.

regards,
finn

[Jython-users] Jython + J2ME ?

[Danny A. <dan...@bt...>]

Hi,
I'm new to Python & Jython but am wondering whether anyone had looked into
using Jython with the CLDC+profiles, or had any idea of the chances of
interoperability.

Cheers,
Danny.

---
Danny Ayers
http://www.isacat.net

RE: [Jython-users] running IE from within jython

[Don C. <don...@em...>]

There is a good example of how to launch a URL in a browser from a Java
application using the DEFAULT browser. 

http://www.stanford.edu/~ejalbert/software/BrowserLauncher/

> -----Original Message-----
> From: Glen Starchman [mailto:gl...@en...]
> Sent: Wednesday, June 13, 2001 12:32 PM
> To: jyt...@li...
> Subject: Re: [Jython-users] running IE from within jython
> 
> 
> (sorry, have had little sleep with a newborn and sent before
> checking... should look like:)
> 
> 
> 
> webbrowser.py
> 
> from java.lang import *
> class webbrowser:
>     def __init__(self, browser_path):
>         self.browser=browser_path
> 
>     def setURL(self,url):
>         self.url = url
> 
>     def open_new(self):
>         p = Runtime.getRuntime().exec("%s %s" % (self.browser,
> self.url))
>         p.waitFor()    #if you wish to wait until the browser 
> is closed
> 
> 
> moduleA.py
> 
> from webbrowser import webbrowser
> 
> if __name__=="__main__":
>     wb = webbrowser("C:/Program Files/Internet Explorer/iexplore.exe")
>     wb.setURL("www.jython.org") 
>    wb.open_new()
> 
> 
> 
> 
>              > ================================================
> > C:\>jython
> > Jython 2.0 on java1.3.0_01 (JIT: null)
> > Type "copyright", "credits" or "license" for more information.
> > >>> from java.lang import Runtime
> > >>> rt=Runtime.getRuntime()
> > >>> browser="C:/Program Files/Internet Explorer/iexplore.exe"
> > >>> url="www.jython.org"
> > >>> cmd="%s %s" % (browser, url)
> > >>> rt.exec(cmd)
> > java.lang.Win32Process@407527
> > >>>
> > ================================================
> > 
> > I would prefer "a la Python":
> > 
> > ================================================
> > ActivePython 2.1, build 210 ActiveState)
> > based on Python 2.1 (#15, Apr 23 2001, 18:00:35) [MSC 32 
> bit (Intel)] on
> > win32
> > Type "help", "copyright", "credits" or "license" for more 
> information.
> > >>> import webbrowser
> > >>> webbrowser.open_new("www.python.com")
> > ================================================
> > 
> > Regards,
> > 
> > Andre
> > 
> > 
> > ----- Original Message -----
> > From: "Mark Ackerman" <ack...@go...>
> > To: "Jython Users (E-mail)" <jyt...@li...>
> > Cc: <ack...@go...>
> > Sent: Tuesday, June 12, 2001 5:50 PM
> > Subject: [Jython-users] running IE from within jython
> > 
> > 
> > > Anyone have experience running IE or netscape from within 
> jython?  I just
> > > need to start it with a url.
> > >
> > > Mark
> > >
> > > _______________________________________________
> > > Jython-users mailing list
> > > Jyt...@li...
> > > http://lists.sourceforge.net/lists/listinfo/jython-users
> > >
> > 
> > 
> > _______________________________________________
> > Jython-users mailing list
> > Jyt...@li...
> > http://lists.sourceforge.net/lists/listinfo/jython-users
> -- 
> Glen Starchman
> Enabled Ventures/Enabled Technology Group
> gl...@en...
> 206.234.7330
> 
> 
> _______________________________________________
> Jython-users mailing list
> Jyt...@li...
> http://lists.sourceforge.net/lists/listinfo/jython-users
> 
> 

[Jython-users] strange warning, but what does it mean?

[Benjamin C. <bc...@cs...>]

Hi there,

I'm getting a warning I haven't seen before. Can someone tell me exactly
what it means?

/home/bcollar/work/ecommerce/AppTester.py:4: SyntaxWarning: local name
'self' in '__init__' shadows use as global in nested scopes
  def __init__(self, *TestClasses):

Thanks
Ben

Re: [Jython-users] running IE from within jython

[Matthew S. <m.s...@cs...>]

I found the following tip on www.javaworld.com some time ago that I use
all the time. It's a static class that invokes a browser like so

BrowserControl.displayURL("http://www.javaworld.com");

The nice thing about it is that if there is a running instance then it
will use that browser also it works on multiple platforms.

Source code and the article can be found here

http://www.javaworld.com/javaworld/javatips/jw-javatip66.html

Shouldn't be any work at all just compile the class, import it and call
the function from within Jython.

Matt
--=20
Matthew S. Shields BSc (hons), PhD student
Parallel and Scientific Computation Group, Dept of Computer Science
Cardiff University http://www.cs.cf.ac.uk/User/M.S.Shields/
M.S.Shields@(cs.cf.ac.uk|usa.net) ICQ# 99023784               =1B:wq

Re: [Jython-users] running IE from within jython

[D-Man <ds...@ri...>]

On Tue, Jun 12, 2001 at 03:50:19PM -0700, Mark Ackerman wrote:
| Anyone have experience running IE or netscape from within jython?  I just
| need to start it with a url.

There is a module in the standard library (of CPython anyays) that
will exec a web browser on the user's system.  Check it out and see if
it does what you want and works with Jython.  The other option is to
try COM, but I have no experience with it nor do I have a clue how
well Java supports COM on Windows (COM doesn't exist anywhere else).

-D