test build

.github/workflows/build.yml

@@ -47,6 +47,18 @@ jobs:
       artifact: ${{ steps.init.outputs.artifact }}
     runs-on: ${{ (inputs.target_os == 'ios' || inputs.target_os == 'mac') && 'macos-latest' || inputs.target_os == 'win' && 'windows-2019' || 'ubuntu-20.04' }}
     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: '3.9.13'
+          # 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: Initialize
         id: init
         shell: bash