set up release action

Author: cleoold

.github/workflows/pypi.yml

@@ -0,0 +1,31 @@
+name: pypi
+
+on:
+  push:
+    tags: [v*]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: 3.8
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install twine
+    - name: Build sdist
+      run: |
+        python setup.py sdist
+    - name: Publish to Pypi
+      env:
+        TWINE_REPOSITORY: pypi
+        TWINE_NON_INTERACTIVE: true
+        TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
+        TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
+      run: |
+        twine upload dist/*