OpenModelica · syntron · Dec 27, 2025 · Dec 27, 2025 · Dec 27, 2025 · Nov 23, 2025
diff --git a/.github/workflows/Test.yml b/.github/workflows/Test.yml
@@ -14,9 +14,19 @@ jobs:
     timeout-minutes: 30
     strategy:
       matrix:
-        python-version: ['3.10', '3.12', '3.13']
+        # test for:
+        # * Python 3.10 - oldest supported version
+        # * Python 3.12 - changes in OMCSession / OMCPath
+        # * Python 3.14 - latest Python version
+        python-version: ['3.10', '3.12', '3.14']
+        # * Linux using ubuntu-latest
+        # * Windows using windows-latest
         os: ['ubuntu-latest', 'windows-latest']
-        omc-version: ['stable', 'nightly']
+        # * OM 1.25.0 - before changing definition of simulation overrides
+        # * OM stable - latest stable version
+        # * OM nightly - latest nightly build
+        omc-version: ['1.25.0', 'stable', 'nightly']
+        # => total of 12 runs for each test
 
     steps:
       - uses: actions/checkout@v6

diff --git a/OMPython/ModelicaSystem.py b/OMPython/ModelicaSystem.py
diff --git a/OMPython/OMCSession.py b/OMPython/OMCSession.py
diff --git a/OMPython/__init__.py b/OMPython/__init__.py
@@ -15,32 +15,38 @@
     ModelicaSystemError,
 )
 from OMPython.OMCSession import (
+    OMCPath,
+    OMCSession,
     OMCSessionCmd,
-    OMCSessionException,
-    OMCSessionRunData,
-    OMCSessionZMQ,
-    OMCSessionPort,
-    OMCSessionLocal,
     OMCSessionDocker,
     OMCSessionDockerContainer,
+    OMCSessionException,
+    OMCSessionLocal,
+    OMCSessionPort,
+    OMCSessionRunData,
     OMCSessionWSL,
+    OMCSessionZMQ,
 )
 
 # global names imported if import 'from OMPython import *' is used
 __all__ = [
     'LinearizationResult',
+
     'ModelicaSystem',
     'ModelicaSystemCmd',
     'ModelicaSystemDoE',
     'ModelicaSystemError',
 
+    'OMCPath',
+
+    'OMCSession',
     'OMCSessionCmd',
+    'OMCSessionDocker',
+    'OMCSessionDockerContainer',
     'OMCSessionException',
-    'OMCSessionRunData',
-    'OMCSessionZMQ',
     'OMCSessionPort',
     'OMCSessionLocal',
-    'OMCSessionDocker',
-    'OMCSessionDockerContainer',
+    'OMCSessionRunData',
     'OMCSessionWSL',
+    'OMCSessionZMQ',
 ]
diff --git a/README.md b/README.md
@@ -40,8 +40,8 @@ help(OMPython)
 ```
 
 ```python
-from OMPython import OMCSessionZMQ
-omc = OMCSessionZMQ()
+from OMPython import OMCSessionLocal
+omc = OMCSessionLocal()
 omc.sendExpression("getVersion()")
 ```
 

diff --git a/tests/test_ArrayDimension.py b/tests/test_ArrayDimension.py
@@ -2,18 +2,18 @@
 
 
 def test_ArrayDimension(tmp_path):
-    omc = OMPython.OMCSessionZMQ()
+    omcs = OMPython.OMCSessionLocal()
 
-    omc.sendExpression(f'cd("{tmp_path.as_posix()}")')
+    omcs.sendExpression(f'cd("{tmp_path.as_posix()}")')
 
-    omc.sendExpression('loadString("model A Integer x[5+1,1+6]; end A;")')
-    omc.sendExpression("getErrorString()")
+    omcs.sendExpression('loadString("model A Integer x[5+1,1+6]; end A;")')
+    omcs.sendExpression("getErrorString()")
 
-    result = omc.sendExpression("getComponents(A)")
+    result = omcs.sendExpression("getComponents(A)")
     assert result[0][-1] == (6, 7), "array dimension does not match"
 
-    omc.sendExpression('loadString("model A Integer y = 5; Integer x[y+1,1+9]; end A;")')
-    omc.sendExpression("getErrorString()")
+    omcs.sendExpression('loadString("model A Integer y = 5; Integer x[y+1,1+9]; end A;")')
+    omcs.sendExpression("getErrorString()")
 
-    result = omc.sendExpression("getComponents(A)")
+    result = omcs.sendExpression("getComponents(A)")
     assert result[-1][-1] == ('y+1', 10), "array dimension does not match"
diff --git a/tests/test_FMIRegression.py b/tests/test_FMIRegression.py
@@ -7,21 +7,21 @@
 
 
 def buildModelFMU(modelName):
-    omc = OMPython.OMCSessionZMQ()
+    omcs = OMPython.OMCSessionLocal()
 
     tempdir = pathlib.Path(tempfile.mkdtemp())
     try:
-        omc.sendExpression(f'cd("{tempdir.as_posix()}")')
+        omcs.sendExpression(f'cd("{tempdir.as_posix()}")')
 
-        omc.sendExpression("loadModel(Modelica)")
-        omc.sendExpression("getErrorString()")
+        omcs.sendExpression("loadModel(Modelica)")
+        omcs.sendExpression("getErrorString()")
 
         fileNamePrefix = modelName.split(".")[-1]
         exp = f'buildModelFMU({modelName}, fileNamePrefix="{fileNamePrefix}")'
-        fmu = omc.sendExpression(exp)
+        fmu = omcs.sendExpression(exp)
         assert os.path.exists(fmu)
     finally:
-        del omc
+        del omcs
         shutil.rmtree(tempdir, ignore_errors=True)
 
 

diff --git a/tests/test_ModelicaSystem.py b/tests/test_ModelicaSystem.py
@@ -47,14 +47,15 @@ def worker():
         )
         mod.simulate()
         mod.convertMo2Fmu(fmuType="me")
+
     for _ in range(10):
         worker()
 
 
 def test_setParameters():
-    omc = OMPython.OMCSessionZMQ()
-    model_path_str = omc.sendExpression("getInstallationDirectoryPath()") + "/share/doc/omc/testmodels"
-    model_path = omc.omcpath(model_path_str)
+    omcs = OMPython.OMCSessionLocal()
+    model_path_str = omcs.sendExpression("getInstallationDirectoryPath()") + "/share/doc/omc/testmodels"
+    model_path = omcs.omcpath(model_path_str)
     mod = OMPython.ModelicaSystem()
     mod.model(
         model_file=model_path / "BouncingBall.mo",
@@ -87,9 +88,9 @@ def test_setParameters():
 
 
 def test_setSimulationOptions():
-    omc = OMPython.OMCSessionZMQ()
-    model_path_str = omc.sendExpression("getInstallationDirectoryPath()") + "/share/doc/omc/testmodels"
-    model_path = omc.omcpath(model_path_str)
+    omcs = OMPython.OMCSessionLocal()
+    model_path_str = omcs.sendExpression("getInstallationDirectoryPath()") + "/share/doc/omc/testmodels"
+    model_path = omcs.omcpath(model_path_str)
     mod = OMPython.ModelicaSystem()
     mod.model(
         model_file=model_path / "BouncingBall.mo",
@@ -155,11 +156,9 @@ def test_customBuildDirectory(tmp_path, model_firstorder):
 @skip_on_windows
 @skip_python_older_312
 def test_getSolutions_docker(model_firstorder):
-    omcp = OMPython.OMCSessionDocker(docker="openmodelica/openmodelica:v1.25.0-minimal")
-    omc = OMPython.OMCSessionZMQ(omc_process=omcp)
-
+    omcs = OMPython.OMCSessionDocker(docker="openmodelica/openmodelica:v1.25.0-minimal")
     mod = OMPython.ModelicaSystem(
-        session=omc.omc_process,
+        session=omcs,
     )
     mod.model(
         model_file=model_firstorder,

diff --git a/tests/test_ModelicaSystemCmd.py b/tests/test_ModelicaSystemCmd.py
@@ -36,15 +36,12 @@ def test_simflags(mscmd_firstorder):
 
     mscmd.args_set({
         "noEventEmit": None,
-        "override": {'b': 2}
+        "override": {'b': 2, 'a': 4},
     })
-    with pytest.deprecated_call():
-        mscmd.args_set(args=mscmd.parse_simflags(simflags="-noEventEmit -noRestart -override=a=1,x=3"))
 
     assert mscmd.get_cmd_args() == [
         '-noEventEmit',
-        '-noRestart',
-        '-override=a=1,b=2,x=3',
+        '-override=a=4,b=2',
     ]
 
     mscmd.args_set({
@@ -53,6 +50,5 @@ def test_simflags(mscmd_firstorder):
 
     assert mscmd.get_cmd_args() == [
         '-noEventEmit',
-        '-noRestart',
-        '-override=a=1,x=3',
+        '-override=a=4',
     ]
diff --git a/tests/test_ModelicaSystemDoE.py b/tests/test_ModelicaSystemDoE.py
@@ -69,15 +69,14 @@ def test_ModelicaSystemDoE_local(tmp_path, model_doe, param_doe):
 @skip_on_windows
 @skip_python_older_312
 def test_ModelicaSystemDoE_docker(tmp_path, model_doe, param_doe):
-    omcp = OMPython.OMCSessionDocker(docker="openmodelica/openmodelica:v1.25.0-minimal")
-    omc = OMPython.OMCSessionZMQ(omc_process=omcp)
-    assert omc.sendExpression("getVersion()") == "OpenModelica 1.25.0"
+    omcs = OMPython.OMCSessionDocker(docker="openmodelica/openmodelica:v1.25.0-minimal")
+    assert omcs.sendExpression("getVersion()") == "OpenModelica 1.25.0"
 
     doe_mod = OMPython.ModelicaSystemDoE(
         model_file=model_doe,
         model_name="M",
         parameters=param_doe,
-        session=omcp,
+        session=omcs,
         simargs={"override": {'stopTime': 1.0}},
     )
 

diff --git a/tests/test_OMCPath.py b/tests/test_OMCPath.py
@@ -15,54 +15,41 @@
 )
 
 
-def test_OMCPath_OMCSessionZMQ():
-    om = OMPython.OMCSessionZMQ()
-
-    _run_OMCPath_checks(om)
-
-    del om
-
-
 def test_OMCPath_OMCProcessLocal():
-    omp = OMPython.OMCSessionLocal()
-    om = OMPython.OMCSessionZMQ(omc_process=omp)
+    omcs = OMPython.OMCSessionLocal()
 
-    _run_OMCPath_checks(om)
+    _run_OMCPath_checks(omcs)
 
-    del om
+    del omcs
 
 
 @skip_on_windows
 @skip_python_older_312
 def test_OMCPath_OMCProcessDocker():
-    omcp = OMPython.OMCSessionDocker(docker="openmodelica/openmodelica:v1.25.0-minimal")
-    om = OMPython.OMCSessionZMQ(omc_process=omcp)
-    assert om.sendExpression("getVersion()") == "OpenModelica 1.25.0"
+    omcs = OMPython.OMCSessionDocker(docker="openmodelica/openmodelica:v1.25.0-minimal")
+    assert omcs.sendExpression("getVersion()") == "OpenModelica 1.25.0"
 
-    _run_OMCPath_checks(om)
+    _run_OMCPath_checks(omcs)
 
-    del omcp
-    del om
+    del omcs
 
 
 @pytest.mark.skip(reason="Not able to run WSL on github")
 @skip_python_older_312
 def test_OMCPath_OMCProcessWSL():
-    omcp = OMPython.OMCSessionWSL(
+    omcs = OMPython.OMCSessionWSL(
         wsl_omc='omc',
         wsl_user='omc',
         timeout=30.0,
     )
-    om = OMPython.OMCSessionZMQ(omc_process=omcp)
 
-    _run_OMCPath_checks(om)
+    _run_OMCPath_checks(omcs)
 
-    del omcp
-    del om
+    del omcs
 
 
-def _run_OMCPath_checks(om: OMPython.OMCSessionZMQ):
-    p1 = om.omcpath_tempdir()
+def _run_OMCPath_checks(omcs: OMPython.OMCSession):
+    p1 = omcs.omcpath_tempdir()
     p2 = p1 / 'test'
     p2.mkdir()
     assert p2.is_dir()
@@ -81,14 +68,14 @@ def _run_OMCPath_checks(om: OMPython.OMCSessionZMQ):
 
 
 def test_OMCPath_write_file(tmpdir):
-    om = OMPython.OMCSessionZMQ()
+    omcs = OMPython.OMCSessionLocal()
 
     data = "abc # \\t # \" # \\n # xyz"
 
-    p1 = om.omcpath_tempdir()
+    p1 = omcs.omcpath_tempdir()
     p2 = p1 / 'test.txt'
     p2.write_text(data=data)
 
     assert data == p2.read_text()
 
-    del om
+    del omcs
diff --git a/tests/test_OMSessionCmd.py b/tests/test_OMSessionCmd.py
@@ -2,8 +2,8 @@
 
 
 def test_isPackage():
-    omczmq = OMPython.OMCSessionZMQ()
-    omccmd = OMPython.OMCSessionCmd(session=omczmq.omc_process)
+    omcs = OMPython.OMCSessionLocal()
+    omccmd = OMPython.OMCSessionCmd(session=omcs)
     assert not omccmd.isPackage('Modelica')