Upgrade CI build systems to use Python 3.10 (#1151)

* Upgrade CI build systems to use Python 3.10

Changes include:
- Switch Azure Pipelines to use Python 3.10 instead of 3.6
- Switch GitHub Actions to use Python 3.10 instead of 3.10b2 for main CI
- Switch GitHub Actions to use Python 3.10 instead of 3.9 for all auxilliary CI

* Fix nox file

.github/workflows/ci.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: [3.6, 3.7, 3.8, 3.9]
+        python-version: ["3.6", "3.7", "3.8", "3.9", "3.10"]
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:
@@ -28,26 +28,3 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: python -m nox --non-interactive --session tests-${{ matrix.python-version }}  # Run nox for a single version of Python
-  ci-beta:
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.10.0-beta.2"]
-      fail-fast: false
-    runs-on: ${{ matrix.os }}
-    steps:
-      - uses: actions/checkout@v2  # https://github.com/actions/checkout
-        with:
-          # Only a single commit is fetched by default, for the ref/SHA that triggered the workflow.
-          # Set fetch-depth: 0 to fetch all history for all branches and tags.
-          fetch-depth: 0 # Needed for setuptools_scm to work correctly
-      - name: Set up Python
-        uses: actions/setup-python@v2  # https://github.com/actions/setup-python
-        with:
-          python-version: ${{ matrix.python-version }}
-      - name: Install python prerequisites
-        run: pip install -U --user pip setuptools setuptools-scm nox
-      - name: Run tests and post coverage results
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: python -m nox --non-interactive --session tests-3.10  # Run nox for a single version of Python

.github/workflows/doc.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: [3.9]
+        python-version: ["3.10"]
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:

.github/workflows/format.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: [3.9]
+        python-version: ["3.10"]
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:

.github/workflows/lint.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: [3.9]
+        python-version: ["3.10"]
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:

.github/workflows/mypy.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: [3.9]
+        python-version: ["3.10"]
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:

azure-pipelines.yml

@@ -14,9 +14,6 @@ jobs:
   # Run the pipeline with multiple Python versions
   strategy:
     matrix:
-      Python36:
-        python.version: '3.6'
-        NOXSESSION: 'tests-3.6'
       Python37:
         python.version: '3.7'
         NOXSESSION: 'tests-3.7'
@@ -26,9 +23,9 @@ jobs:
       Python39:
         python.version: '3.9'
         NOXSESSION: 'tests-3.9'
-#      Python310:
-#        python.version: '3.10.0b2'
-#        NOXSESSION: 'tests-3.10'
+      Python310:
+        python.version: '3.10'
+        NOXSESSION: 'tests-3.10'
     # Increase the maxParallel value to simultaneously run the job for all versions in the matrix (max 10 for free open-source)
     maxParallel: 10
 

noxfile.py

@@ -1,7 +1,7 @@
 import nox
 
 
-@nox.session(python=['3.9'])
+@nox.session(python=['3.10'])
 def docs(session):
     session.install(
         'sphinx',
@@ -41,7 +41,7 @@ def tests(session, plugin):
         )
 
 
-@nox.session(python=['3.8', '3.9'])
+@nox.session(python=['3.8', '3.9', '3.10'])
 @nox.parametrize('step', ['mypy', 'flake8'])
 def validate(session, step):
     session.install('invoke', './[validate]')