Re: [Jython-users] beginner question

[Robert W. B. <rb...@di...>]

Hi Frank,

On Thu, 6 Sep 2001, Frank Immich wrote:
> Thanks...it's working now.
> But I still have some questions.
> I run jythonc hw.py ... the result is stored in jpywork. O.K.?

Correct, but you can change that with jythonc's -w

> to start hw.class I need all the other files:hw$_PyInner.class,
> hw$HelloWorld.class, hw.class...Right ?

Correct.

> command: ..\jpywork>java -cp ".;..\jython.jar" hw
> So I can not run a hw.py-->hw.class via jythonc file without the jython.jar
> and all the other stuff ??

The files in jython.jar (and other stuff) are required. They don't have to
be in jython.jar however. see below.

> Is there a way to run hw.class on a "empty"
> machine ?

Assuming 'emtpy' means no Jython, but yes Java...
Yes. jythonc's --deep, --core, --all and --jar options let you stuff all
required classes in a jar file, so deployment requires sending just one
jar.  see http://www.jython.org/docs/jythonc.html.

> BTW is there a (reliable) list of py modules which work with jython ?

Not really a formal list unless you consider those that are included with
the Jython distribution.  The guideline has been that if it comes with
Jython, someone has tried it; If it doesn't, try it and maybe post your
findings here (assuming that doesn't rely on C extensions).

-rb

> At 07:29 PM 9/5/2001 +0000, Finn Bock wrote:
> >[Frank Immich]
> >
> >>Hello,
> >>Pretty new to Jython, and already faced with a problem.
> >>Anyway, looking over the demo programs that  come with, and I can't get
> the
> >>example helloworld, or any other,
> >>to work.  The output trace is attached.
> >>All I found in the archive was a hint, that the classpath has to be set,
> but
> >>it seems to be O.K.
> >>Any suggestions welcomed...
> >>
> >>...
> >>1  java.io.IOException: CreateProcess:
> >>C:\Programme\JavaSoft\JRE\1.3.1\bin\javac -classpath ....
> >
> >It looks like jython was installed with the JRE and there is no javac
> >compiler in the JRE. You must re-install jython and make sure that you
> >are starting the java command from the full JDK.
>
>
> If you look in the directory from the error above, you'll find
> there's no javac.exe there!  On my system, javac is found in
> c:\jdk1.3.1\bin.
>
>
> Perhaps you can get away with editing the jython.bat script
> to point to the jdk... but probably the cleanest approach is as
> Finn says, reinstall, giving the full path to java IN the jdk
> directory as you run the installer, else it will pick up either
> the one in the jre tree, or worse, the MS native java...
>
>
>
> Mats
>
>