Thanks! This clear up a few question I have in mind about python and kepler.
>>>One possibility would be to implement a similar interface to Python, though this >>>would be a somewhat complex task. >>>Another possibility is to use the bcvtb facility in Ptolemy II to interface via a >>>socket to a Python process. This is also complex, but probably easier that writing >>>your own interface. Ya this task that you mention here seems really complex for me, as I might not have the technical skills to implement all this. Will check out python and kepler website. Great Thanks for the help regards ckw On Oct 12, 2011 12:38 AM, "Christopher Brooks" <[email protected]> wrote: > .Hi ckw, > Yes, this is a good place for questions about using Kepler. > > Yes, Kepler has an actor named "Python Script". The actor uses Jython, > which is a Java implementation of Python. Kepler is using Jython 2.2 or > 2.2.1. > I tried upgrading, but jython2.5.8 does not have > org.python.core.PyJavaInstance. > Jython is present as a jar file in Kepler. So, Kepler is not using an > external > version of Python, it is using the Jython jar file at > ./ptolemy/src/lib/jython.jar. > > To execute an external program, you could use the Kepler "External > Execution" actor. > This merely invokes the program as a separate process. This would not make > the Python in the external program visible to the Kepler process. > > I'm not sure how you would interface to a Python interpreter outside of > Kepler. > The non-Jython, outside Python interpreter is presumably written in C or > C++. > You could use the Java Native Interface (JNI) to interface to outside > Python shared libraries. > JNI is rather difficult to use. Kepler uses Ptolemy II as its engine. > Ptolemy II has > a Matlab interface that is found in the Kepler sources as > kepler/ptolemy/src/ptolemy/matlab/ > One possibility would be to implement a similar interface to Python, though > this would be a somewhat complex task. > > Another possibility is to use the bcvtb facility in Ptolemy II to interface > via a socket > to a Python process. This is also complex, but probably easier that > writing your > own interface. In Ptolemy II, see $PTII/lbnl for the bcvtb interface. > > I just started a page about Kepler and Python, see > https://kepler-project.org/developers/reference/python-and-kepler > > _Christopher > > > On 10/11/11 4:49 AM, kianwee chen wrote: > > Hi! I am a newbie in using kepler and every now and then I will run into > obstacles concerning the usage of kepler, so I am wondering if this forum is > a good place post my questions ? > > I am currently trying to use the pythonscript actor in kepler to execute an > external programme ( the external programme has a python api which I can > make use of ) thus I would like to know, does kepler has its own python > interpreter ? or does it use the python that is in the environment PATH of > my OS ? Is it possible to change the python intepreter to python that the > external programme is using to ensure that the version of python use is the > same between kepler and the external programme ? > > ckw > > -- > Christopher Brooks, PMP University of California > CHESS Executive Director US Mail: 337 Cory Hall > Programmer/Analyst CHESS/Ptolemy/Trust Berkeley, CA 94720-1774 > ph: 510.643.9841 (Office: 545Q Cory) > home: (F-Tu) 707.665.0131 cell: 707.332.0670 > >
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