Rename internal variables and methods to start with _

.github/workflows/Test.yml

@@ -19,16 +19,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: "Set up OpenModelica Compiler"
-        uses: OpenModelica/setup-openmodelica@v1.0
-        with:
-          version: ${{ matrix.omc-version }}
-          packages: |
-            omc
-          libraries: |
-            'Modelica 4.0.0'
-      - run: "omc --version"
-
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
         with:
@@ -38,16 +28,25 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install . pytest pytest-md pytest-emoji flake8
+          pip install . pytest pytest-md pytest-emoji pre-commit
 
       - name: Set timezone
         uses: szenius/set-timezone@v2.0
         with:
           timezoneLinux: 'Europe/Berlin'
 
-      - name: Lint with flake8
-        run: |
-          flake8 . --count --statistics
+      - name: Run pre-commit linters
+        run: 'pre-commit run --all-files'
+
+      - name: "Set up OpenModelica Compiler"
+        uses: OpenModelica/setup-openmodelica@v1.0
+        with:
+          version: ${{ matrix.omc-version }}
+          packages: |
+            omc
+          libraries: |
+            'Modelica 4.0.0'
+      - run: "omc --version"
 
       - name: Run pytest
         uses: pavelzw/pytest-action@v2

.pre-commit-config.yaml

@@ -0,0 +1,39 @@
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v5.0.0
+    hooks:
+      - id: trailing-whitespace
+      - id: end-of-file-fixer
+      - id: check-case-conflict
+      - id: check-docstring-first
+      - id: check-executables-have-shebangs
+      - id: check-shebang-scripts-are-executable
+      - id: mixed-line-ending
+      - id: debug-statements
+      - id: destroyed-symlinks
+      - id: fix-byte-order-marker
+      - id: check-merge-conflict
+      - id: name-tests-test
+        args: [--pytest-test-first]
+
+  - repo: https://github.com/pycqa/flake8
+    rev: '7.2.0'
+    hooks:
+      - id: flake8
+
+  - repo: https://github.com/codespell-project/codespell
+    rev: v2.4.1
+    hooks:
+      - id: codespell
+
+  - repo: https://github.com/pre-commit/mirrors-mypy.git
+    rev: "v1.15.0"
+    hooks:
+      - id: mypy
+        args: []
+        exclude: tests/
+        additional_dependencies:
+          - pyparsing
+          - types-psutil
+          - pyzmq
+          - numpy