Call python method from java

Question

I try to call a python method from java, and made a very simple example. But I have an exception:

My py file (test.py)

def tmp():
    return "test!!!!!"

My java code

PythonInterpreter interpreter = new PythonInterpreter();
interpreter.exec("import test");
PyObject someFunc = interpreter.get("tmp");
System.out.println(someFunc);
PyObject result = someFunc.__call__();
String realResult = (String) result.__tojava__(String.class);
System.out.println(realResult);

And I have this result, exception on line *PyObject result = someFunc.__call__();*, because someFunc is null

null 
Exception in thread "main" java.lang.NullPointerException   at
  com.testing.Test.test(Test.java:936)  at
  com.testing.Test.main(Test.java:96)

Any idea?

Use interpreter.get("test.tmp");

sloth
– sloth

2012-12-13 10:33:30 +00:00
Commented Dec 13, 2012 at 10:33 — sloth
– sloth, Commented Dec 13, 2012 at 10:33

Janne Karila · Accepted Answer · 2012-12-13 10:32:33Z

2

interpreter.exec("from test import tmp");
PyObject someFunc = interpreter.get("tmp");

answered Dec 13, 2012 at 10:32

Janne Karila

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