Publish releases to PyPI via a GitHub Action

.github/workflows/ci.yml

@@ -90,7 +90,7 @@ jobs:
 
       - name: Build Python package
         run: |
-          make build_pypi
+          make build
 
 
   docs:

.github/workflows/publish.yml

@@ -0,0 +1,50 @@
+# This github action builds Alibi Detect and publishes it to PyPI.
+# It is only run when a new "release" is published via GitHub here:
+# https://github.com/SeldonIO/alibi-detect/releases
+name: Publish release to PyPI
+
+# Only run when tags starting with "v" are pushed
+on: 
+  release:
+    types: [published]
+
+jobs:
+  build-and-publish:
+    name: Build and publish
+    runs-on: ubuntu-18.04
+
+    steps:
+    # Setup Python
+    - uses: actions/checkout@master
+    - name: Set up Python 3.9
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.9
+
+    # Build
+    - name: Build a binary wheel and a source tarball
+      run: make build
+
+    # Get the PEP440 compliant version number (so we can check version is installable)
+    - name: Get 📦 version number
+      id: get_version
+      run: echo "PACKAGE_VERS=$(python setup.py --version)" >> $GITHUB_ENV
+
+    # Publish the associated tag to PyPI
+    - name: Publish 📦 to PyPI
+      uses: pypa/gh-action-pypi-publish@release/v1
+      with:
+        password: ${{ secrets.PYPI_API_TOKEN }}
+
+    # Wait for a while to give PyPI time to update (otherwise the pip install might fail)
+    - name: Sleep for 3 minutes
+      shell: bash
+      run: sleep 3m
+
+    # Install from PyPI and test
+    - name: Install 📦 from PyPI and test
+      run: |
+        make clean
+        python -m pip install alibi-detect==${{ env.PACKAGE_VERS }}
+        python -c "import alibi_detect; print(alibi_detect)"
+        python -c "from alibi_detect.cd import *; print(MMDDrift)"

.github/workflows/publish_test.yml

@@ -0,0 +1,51 @@
+# This github action builds Alibi Detect and publishes it to Test PyPI.
+# It is only run when a new tag is pushed to github.
+name: Publish release to Test PyPI
+
+# Only run when tags starting with "v" are pushed
+on: 
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  build-and-publish:
+    name: Build and publish
+    runs-on: ubuntu-18.04
+
+    steps:
+    # Setup Python
+    - uses: actions/checkout@master
+    - name: Set up Python 3.9
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.9
+
+    # Build
+    - name: Build a binary wheel and a source tarball
+      run: make build
+
+    # Publish to Test PyPI
+    - name: Publish 📦 to Test PyPI
+      uses: pypa/gh-action-pypi-publish@release/v1
+      with:
+        password: ${{ secrets.TEST_PYPI_API_TOKEN }}
+        repository_url: https://test.pypi.org/legacy/
+
+    # Get the PEP440 compliant version number (so we can check version is installable)
+    - name: Get 📦 version number
+      id: get_version
+      run: echo "PACKAGE_VERS=$(python setup.py --version)" >> $GITHUB_ENV
+
+    # Wait for a while to give PyPI time to update (otherwise the pip install might fail)
+    - name: Sleep for 3 minutes
+      shell: bash
+      run: sleep 3m
+
+    # Install from Test PyPI and test
+    - name: Install 📦 from PyPI and test
+      run: |
+        make clean
+        python -m pip install --index-url https://test.pypi.org/simple/ --extra-index-url https://pypi.org/simple alibi-detect==${{ env.PACKAGE_VERS }}
+        python -c "import alibi_detect; print(alibi_detect)"
+        python -c "from alibi_detect.cd import *; print(MMDDrift)"

Makefile

@@ -2,9 +2,14 @@
 install: ## Install package in editable mode with all the dependencies
 	pip install -e .
 
+.PHONY: clean
+clean:	# Clean up install
+	pip uninstall -y alibi-detect
+	rm -r alibi_detect.egg-info/ dist/ build/
+
 .PHONY: test
 test: ## Run all tests
-	python setup.py test
+	pytest alibi_detect
 
 .PHONY: lint
 lint: ## Check linting according to the flake8 configuration in setup.cfg
@@ -14,6 +19,14 @@ lint: ## Check linting according to the flake8 configuration in setup.cfg
 mypy: ## Run typeckecking according to mypy configuration in setup.cfg
 	mypy .
 
+.PHONY: build
+build: ## Build the Python package (for debugging, building for release is done via a GitHub Action)
+	# Below commands are a duplicate of those in the publish.yml "Build" step
+	# (virtualenv added due to Debian issue https://github.com/pypa/build/issues/224)
+	python -m pip install --upgrade pip virtualenv
+	python -m pip install build~=0.9
+	python -m build --sdist --wheel --outdir dist/ .
+
 .PHONY: build_docs
 build_docs:
 	# readthedocs.org build command
@@ -32,18 +45,6 @@ clean_docs: ## Clean the documentation build
 	$(MAKE) -C doc clean
 	rm -r doc/source/api
 
-.PHONY: build_pypi
-build_pypi: ## Build the Python package
-	python setup.py sdist bdist_wheel
-
-.PHONY: push_pypi_test
-push_pypi_test: ## Upload the Python package to the test PyPI registry
-	twine upload --repository-url https://test.pypi.org/legacy/ dist/*
-
-.PHONY: push_pypi
-push_pypi: ## Upload the Python package to the PyPI registry
-	twine upload dist/*
-
 .PHONY: help
 help: ## Print out help message on using these commands
 	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'

pyproject.toml

@@ -0,0 +1,6 @@
+[build-system]
+requires = [
+	"setuptools~=65.5",
+	"wheel~=0.38",
+]
+build-backend = "setuptools.build_meta"