jython-users

[Jython-users] Jython-2.0 released

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

I am happy to announce the release of Jython 2.0. 

Jython is a Java implementation of the Python programming
language.  It allows users to compile Python source code to
Java byte codes, and run the resulting bytecodes on any Java
Virtual Machine.  It is a very seamless and smooth
integration with Java:  from Python you have complete access
to all Java libraries, can build applets, can integrate with
Java beans, and can subclass Java classes in Python and vice
versa.  Like Python, and unlike Java, Jython can also be
used interactively:  just type some Jython code at the
prompt and see the results immediately.

A java installer is available for download at the Jython website:

    http://www.jython.org/

Installation is started by running the installer class. Further 
information and tips on installation is available at:

    http://www.jython.org/install.html

Jython 2.0 is feature compatible with Python 2.0 and among the 
new feature are:

  - Augmented assignment, e.g. x += 1
  - List comprehensions, e.g. [x**2 for x in range(10)]
  - Extended import statement, e.g. import Module as Name
  - Extended print statement, e.g. print >> file, "Hello"


A complete list of changes and differences are available here:

  http://www.jython.org/NEWS.html

Bugs can be reported to the bug manager on SourceForge:

  http://sourceforge.net/bugs/?group_id=12867

Cheers,
the jython-developers 

Re: [Jython-users] Jython-2.0 released

[<ba...@di...>]

On behalf of the Pythonlabs team, I want to extend my congratulations
to Finn Bock on the release of Jython 2.0 final.  This is a wonderful
milestone in the life of JPython and Jython.

Some of you are probably aware that I haven't been actively involved
in Jython development for many months.  With the Pythonlabs turmoil in
2000, I found that trying to lead two open source projects (Mailman
and Jython) while still contributing to CPython's development was
simply too much.  I ran out of cycles and something had to give.

Handing over the reins of Jython project leadership to Finn was
actually quite an easy decision.  He has been a valued contributor to
the project for a long time, and I knew that he would serve Jython
well.  The Jython 2.0 release reinforces the wisdom of that decision!
:)

Jython is and continues to be a very important part of the Python
world.  The Pythonlabs team encourages and salutes Finn's work on
Jython and will continue to work with him on various issues such as
language development, CPython compatibility, and legal issues.

I leave Jython in good hands -- thanks Finn Bock, Samuele Pedroni, and
all the other Jython developers.

-Barry

Barry A. Warsaw
PythonLabs at Digital Creations
ba...@di...

Re: [Jython-users] Jython-2.0 released

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

Jython is very cool!  Thanks Finn.

I have used it already to find some errors in my Java code ;-) (the
interactiveness is invaluable).

On Thu, Jan 18, 2001 at 10:12:20AM +0000, Finn Bock wrote:
| Java beans, and can subclass Java classes in Python and vice
| versa.  Like Python, and unlike Java, Jython can also be

How can you access Python classes / modules directly from Java?  It
would be very cool if I could use Jython while not changing any of the
Java my coworkers are using.  (ie.  They wouldn't even have to know I
was using jython except for including the jar file in the classpath)

Thanks,
-D

Re: [Jython-users] Jython-2.0 released

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

On Thu, 18 Jan 2001 17:27:39 -0500, you wrote:

>How can you access Python classes / modules directly from Java? 

A python class can implement a java interface or java class by listing
the java interface as a base class. Instances of such a python class can
be passed to java code as a parameter and used as any other java class.

In addition, the command "jythonc" can be be used to create a java class
from a python module. Such a java class be used from a java program as a
normal java class. Including in a "new" statement.

regards.
finn

Re: [Jython-users] Jython-2.0 released

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

Oops,  I didn't have the mailfolder listed in my MUA.  Wow.  The list
isn't dead.  :-)

On Fri, Jan 19, 2001 at 03:08:13PM +0000, Finn Bock wrote:
| On Thu, 18 Jan 2001 17:27:39 -0500, you wrote:
| 
| >How can you access Python classes / modules directly from Java? 
| 
| A python class can implement a java interface or java class by listing
| the java interface as a base class. Instances of such a python class can
| be passed to java code as a parameter and used as any other java class.
| 
| In addition, the command "jythonc" can be be used to create a java class
| from a python module. Such a java class be used from a java program as a
| normal java class. Including in a "new" statement.

I just found it in the FAQ -- I need to include @sig in the doc
string.  I was using jythonc, but it didn't create a Java interface
that matched my Python interface (it simply called into the
interpreter to execute the python stuff).

| 
| regards.
| finn

I'll check it out some more.

Thanks,
-D