How can I call an OpenModelica model in Python with OMPython?

Question

I have an OpenModelica model made with OMEdit. In order to get a concrete example I designed the following:

Answer 1

• Create one new folder in windows

• In this folder put/create 2 new files file1.py and file2.bat

• The file1.py content is:

import os
import sys
sys.path.insert(0, "C:\OpenModelica1.11.0-32bit\share\omc\scripts\PythonInterface")
from OMPython import OMCSession
sys.path.insert(0, "C:\OpenModelica1.11.0-32bit\lib\python")
os.environ['USER'] = 'stefanache'
omc = OMCSession()
omc.sendExpression("loadModel(Modelica)")
omc.sendExpression("loadFile(getInstallationDirectoryPath() + \"/share/doc/omc/testmodels/BouncingBall.mo\")")
omc.sendExpression("instantiateModel(BouncingBall)")
omc.sendExpression("simulate(BouncingBall)")
omc.sendExpression("plot(h)")`

• the file2.bat content is:

@echo off
python file1.py
pause

• then click on file2.bat... and please be patient!

The plotted result window will appear.