Added support for Python 3.9 (#144)

Signed-off-by: Graham Campbell <[email protected]>

Author: GrahamCampbell

.github/workflows/main.yml

@@ -11,7 +11,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v1
         with:
-          python-version: 3.8
+          python-version: '3.9'
       - name: Install tox
         run: python -m pip install tox
       - name: Run linting
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python: [3.6, 3.7, 3.8]
+        python: ['3.6', '3.7', '3.8', '3.9']
     steps:
       - uses: actions/checkout@v2
       - name: Setup Python

.pre-commit-config.yaml

@@ -7,4 +7,4 @@ repos:
     rev: 19.10b0
     hooks:
     - id: black
-      language_version: python3.8
+      language_version: python3.9

setup.py

@@ -38,6 +38,7 @@
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
     ],
     packages=find_packages(exclude=["cloudevents.tests"]),
     version=pypi_config["version_target"],

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py{36,37,38},lint
+envlist = py{36,37,38,39},lint
 skipsdist = True
 
 [testenv]
@@ -13,7 +13,7 @@ setenv =
 commands = pytest {env:PYTESTARGS} {posargs}
 
 [testenv:reformat]
-basepython=python3.8
+basepython=python3.9
 deps =
     black
     isort
@@ -22,7 +22,7 @@ commands =
     isort cloudevents samples
 
 [testenv:lint]
-basepython = python3.8
+basepython = python3.9
 deps =
     black
     isort