Update python-package.yml

.github/workflows/python-package.yml

@@ -1,22 +1,50 @@
-name: Python package
+name: Python Build Release
 
-on: [push]
+on:
+  push:
+    branches: [ "main" ]
+    paths:
+      - 'src/version.py'
+      - 'requirements.txt'
+      - 'CHANGELOG.md'
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v4
+
       - name: Set up Python
-        # This is the version of the action for setting up Python, not the Python version.
         uses: actions/setup-python@v5
         with:
-          # Semantic version range syntax or exact version of a Python version
           python-version: '3.10.x'
-          # Optional - x64 or x86 architecture, defaults to x64
           architecture: 'x64'
-      # You can test your matrix by printing the current Python version
+
       - name: Display Python version
         run: python -c "import sys; print(sys.version)"
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install pyinstaller
+          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+
+      - name: Check version
+        id: version_check
+        run: |
+          version=$(python -c "from src.version import __version__; print(__version__)")
+          echo "Current version is $version"
+          echo "version=$version" >> $GITHUB_ENV
+        shell: bash
+
+      - name: Verify GitHub tag existence
+        id: tag_check
+        run: |
+          if git ls-remote --exit-code --tags origin "refs/tags/v${{ env.version }}" ; then
+            echo "Tag v${{ env.version }} already exists. Skipping release."
+            exit 1
+          else
+            echo "Tag v${{ env.version }} does not exist. Continuing."
+          fi
+        shell: bash