Simple and effective way to call Python from Java

Question

I have a couple of python scripts whose methods I'd like to access from Java. These functions take a string as a parameter and also return a string. What would be a simple and effective way to do that?

My python codes don't run under jython. With jython, I get loads of errors for simple things like:

'with' will become a reserved keyword in Python 2.6

However, I am able to create .so objects using cython. Could that be used from Java?

duplicate of http://stackoverflow.com/questions/8898765/calling-python-in-java? — cmd, Mar 31 '14 at 20:51
I don't this question has been satisfactorily answered there :/ — gat, Mar 31 '14 at 20:54
If your python code does not run under jython, why do you think there is a "simple and effective" way to do it? — Elliott Frisch, Mar 31 '14 at 20:59
@ElliottFrisch I was hoping I could do that since it works fine with cython. — gat, Mar 31 '14 at 21:08
Is it possible that cython is using an interpreter with a grammar of >= 2.6 and jython is using a grammar of < 2.6? This seems like the bigger issue here. — Lucas, Mar 31 '14 at 21:25
I think you are correct, I just checked cython is using 2.6. — gat, Mar 31 '14 at 21:27

score 0 · Answer 1 · answered Mar 31 '14 at 21:05

0

You will need to wrap the functions in a command line executable that outputs the desired result. Then you can use ProcessBuilder to call the script and get the output.

answered Mar 31 '14 at 21:05

spinlok

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Is there no neater way to do this? – gat Mar 31 '14 at 21:09

Simple and effective way to call Python from Java

1 Answers1