Hi Roman,

On Mon, 14 Nov 2011, Roman Chyla wrote:

so after reading
http://docs.python.org/c-api/init.html#PySys_SetArgvEx and the source
code for _PythonVM_init i figured it out

I have to do:

PythonVM.start("/dvt/workspace/montysolr/src/python/montysolr");

and the sys.path then contains the parent folder (above montysolr) and
i can then set more things by loading some boostrap module

but something like
http://docs.python.org/c-api/veryhigh.html#PyRun_SimpleString would be
much more flexible. Is it something that could be added? I can prepare
a patch (as it seems really trivial my knowledge might be sufficient
for this :))

Yes, adding an 'eval' method on PythonVM, like the 'instantiate' method, would make sense. A patch is welcome !

Andi..


roman

On Mon, Nov 14, 2011 at 1:12 PM, Roman Chyla <[email protected]> wrote:
On Mon, Nov 14, 2011 at 4:25 AM, Andi Vajda <[email protected]> wrote:

On Sun, 13 Nov 2011, Roman Chyla wrote:

I am using JCC to run Python inside Java. For unittest, I'd like to
set PYTHONPATH environment variable programmatically. I can change env
vars inside Java (using

http://stackoverflow.com/questions/318239/how-do-i-set-environment-variables-from-java)
and System.getenv("PYTHONPATH") shows correct values

However, I am still getting "ImportError: no module named...."

If I set PYTHONPATH before starting unittest, it works fine

Is it possible what I would like to do?

Why mess with the environment instead of setting sys.path directly instead ?

That would be great, but I don't know how. I am doing roughly this:

PythonVM.start(programName)
vm = PythonVM.get()
vm.instantiate(moduleName, className);

I tried also:
PythonVM.start(programName, new String[]{"-c", "import
sys;sys.path.insert(0, \'/dvt/workspace/montysolr/src/python\'"});

it is failing on vm.instantiate.... when Python cannot find the module


Alternatively, if JCC could execute/eval python string, I could set
sys.argv that way

I'm not sure what you mean here but JCC's Java PythonVM.init() method takes
an array of strings that is fed into sys.argv. See _PythonVM_Init() sources
in jcc.cpp for details.

sorry, i meant sys.path, not sys.argv

roman


Andi..



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