Re: [Jython-users] Importing custom modules in jython

[Brian C. <cor...@gm...>]

I've had success with custom python modules by setting the python.pathprope=
rty.
My jython script now includes :

-Dpython.path=3D"$PYTHONPATH"

So what ever my PYTHONPATH includes, Jython can also use.

I've not tried this with the PythonInterpreter in Java code, but it works
when I run jython code from the command line.
I would expect that it would work the same.   I'm using jython 2.1.

--Brian

On 2/16/06, Michel Albert <Mic...@st...> wrote:
>
> Hi,
>
> After searching through the mailing list archives I have the impression I
> am
> the only one trying to write some java code and import a custom python
> module. Everyone seems to try it directly in python. So here's some code:
>
> <code>
>    [...]
>    public static void main(String[] args) throws PyException {
>       PythonInterpreter interp =3D new PythonInterpreter();
>
>       interp.exec("import sys");
>
>       interp.exec("from rematch.op.StringReplaceOp import *");
>       [...]
> </code>
>
> "rematch" is a module I wrote myself and installed it using the standard
> python "setup.py" procedure. If I try to import it from whithin the pytho=
n
> interpreter it works just fine:
>
> <code>
>    malbert@stones:~$ python
>    Python 2.4.2 (#2, Sep 30 2005, 21:19:01)
>    [GCC 4.0.2 20050808 (prerelease) (Ubuntu 4.0.1-4ubuntu8)] on linux2
>    Type "help", "copyright", "credits" or "license" for more information.
>    All loaded!
>    ------------------------------------------------------------
>    python $ import sys
>    python $ import rematch
>    python $
> </code>
>
> node: don't mind the python prompt. I edited my startup file. Other than
> that
> it's normal python ;)
>
> Well all this is good and shiny. But now in jython:
>
> <code>
>    malbert@stones:~$ /opt/jython-2.1/jython
>    Jython 2.1 on java1.5.0_05 (JIT: null)
>    Type "copyright", "credits" or "license" for more information.
>    >>> import sys
>    >>> import rematch
>    Traceback (innermost last):
>      File "<console>", line 1, in ?
>    ImportError: no module named rematch
>    >>>
> </code>
>
> The module is installed in "/usr/lib/python2.4/site-packages/rematch" the
> way
> it should be. So why can't jython access it?
>
> As you can see I installed jython into "/opt". I suppose that's not the
> problem or is it? The cache dir is also writeable. Do I have to do
> something
> about sys.path? And if so how do I do that?
> The docs talk a lot about Environment variables and the "registry" file.
> But
> the explanations are vague at best.
>
>
>