I am trying to develop a simple Java application and I want it to use some Python code using Jython. I am trying to run a python method from a file and getting this error:
ImportError: cannot import name testFunction
Just trying a simple example so I can see where the problem is. My python file test.py
is like this:
def testFunction():
print("testing")
And my Java class:
PythonInterpreter interpreter = new PythonInterpreter();
interpreter.exec("path_to_file\\test.py");
interpreter.exec("from test import testFunction");
So it can correctly find the module but behaves like there is no function called testFunction
inside.
Execute script files as follows.
interpreter.execfile("path/to/file/test.py");
If you have functions declared in the script file then after executing the above statement you'll have those functions available to be executed from the program as follows.
interpreter.exec("testFunction()");
So, you don't need to have any import statement.
Complete Sample Code:
package jython_tests;
import org.python.util.PythonInterpreter;
public class RunJythonScript2 {
public static void main(String[] args) {
try (PythonInterpreter pyInterp = new PythonInterpreter()) {
pyInterp.execfile("scripts/test.py");
pyInterp.exec("testFunction()");
}
}
}
Script:
def testFunction():
print "testing"
Output:
testing
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