chore(ci): separate build & publish and add lint

.github/workflows/python.yml

@@ -18,8 +18,26 @@ concurrency:
  cancel-in-progress: true
 
 jobs:
+ test:
+ runs-on: ubuntu-latest
+ steps:
+ - uses: actions/checkout@v4
+ - name: Lint
+ working-directory: python
+ run: |
+ pipenv install --dev
+ pipenv run flake8 databend_udf
+ pipenv run black --check databend_udf
+ - name: build
+ working-directory: python
+ run: |
+ python -m pip install build
+ python -m build
+
  publish:
  runs-on: ubuntu-latest
+ needs: test
+ if: github.event_name == 'push'
  permissions:
  contents: read
  id-token: write
@@ -34,7 +52,6 @@ jobs:
  python -m pip install build
  python -m build
  - uses: pypa/gh-action-pypi-publish@release/v1
- if: github.event_name == 'push'
  with:
  packages-dir: python/dist/
  skip-existing: true