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I think John is looking for something that would allow C Python to call into the netCDF-Java libraries. For that, the two options seem to be: JPype JCCor using interprocess communication. Here's a good presentation on different approaches that I found on the web:
http://www.slideshare.net/onyame/mixing-python-and-java I think Sean Arms at Unidata was looking at JCC at one point. Don On 4/4/12 7:38 AM, stephen.pascoe@xxxxxxxxxx wrote:
The important question is why you need Python. If it's to access some C library with python bindings (e.g. numpy or netCDF4-python) then Jython isn't appropriate and you'll need one of those Python<->bridges JPype or Jepp. If you need the very latest Python features (particularly Python 3) you'll also find Jython is a bit behind CPython. Many standard Python frameworks now work with Jython (e.g. Django, SQLAlchemy) but you'd have to check the compatibility of each dependency. Otherwise Jython is the most popular and well maintained choice. Depending on your application you could also wire Java and Python together using inter-process communication. There is a plethora of RPC libraries out there with good Python and Java support. E.g. protocol buffers. Stephen. --- Stephen Pascoe +44 (0)1235 445980 Centre of Environmental Data Archival STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot OX11 0QX, UK -----Original Message----- From: Robert Casey [mailto:rob@xxxxxxxxxxxxxxxxxxx] Sent: 04 April 2012 14:31 To: Pascoe, Stephen (STFC,RAL,RALSP); John Caron Cc: netcdf-java@xxxxxxxxxxxxxxxx; thredds@xxxxxxxxxxxxxxxx Subject: Re: [thredds] Java to Python tools Hi John- If you use Jython, it looks to be pretty seamless. I am just starting to develop in Jython, so I can't claim experience in this department yet. The first section of this page details Java within Jython. http://www.jython.org/jythonbook/en/1.0/JythonAndJavaIntegration.html -Rob On Apr 4, 2012, at 1:02 AM,<stephen.pascoe@xxxxxxxxxx> wrote:Hi John, Direct experience beyond playing, no; but I've come across several options: * Jpype : http://sourceforge.net/project/jpype -- embeds a JVM in Python * Jepp : http://jepp.soureforge.net -- embeds Python interpreter in Java * Jython : http://www.jython.org -- A Python implementation in the JVM. I expect you want Jpype as in your case Python is doing the wrapping. I tested it out once and it worked for me. The project seems isn't exactly active but it still appears to be in use. Cheers, Stephen. --- Stephen Pascoe +44 (0)1235 445980 Centre of Environmental Data Archival STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot OX11 0QX, UK -----Original Message----- From: thredds-bounces@xxxxxxxxxxxxxxxx [mailto:thredds-bounces@xxxxxxxxxxxxxxxx ] On Behalf Of John Caron Sent: 04 April 2012 00:20 To: Java NetCDF; THREDDS community Subject: [thredds] Java to Python tools Hi all: Anyone have experience with ways to wrap java in Python? We are thinking about how to solve this issue again. John _______________________________________________ thredds mailing list thredds@xxxxxxxxxxxxxxxx For list information or to unsubscribe, visit: http://www.unidata.ucar.edu/mailing_lists/ -- Scanned by iCritical. _______________________________________________ thredds mailing list thredds@xxxxxxxxxxxxxxxx For list information or to unsubscribe, visit: http://www.unidata.ucar.edu/mailing_lists/
-- Don Murray NOAA/ESRL/PSD and CIRES 303-497-3596 http://www.esrl.noaa.gov/psd/people/don.murray/
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