Officially support Python 3.9

Author: bluetech

.github/workflows/main.yml

@@ -53,8 +53,8 @@ jobs:
           python: 3.8
           allow_failure: false
 
-        - name: py38-dj31-postgres-xdist-coverage
-          python: 3.8
+        - name: py39-dj31-postgres-xdist-coverage
+          python: 3.9
           allow_failure: false
 
         - name: py37-dj30-mysql_innodb-coverage
@@ -77,8 +77,8 @@ jobs:
           python: 3.8
           allow_failure: false
 
-        - name: py38-djmaster-sqlite-coverage
-          python: 3.8
+        - name: py39-djmaster-sqlite-coverage
+          python: 3.9
           allow_failure: true
 
         # Explicitly test (older) pytest 5.4.

setup.cfg

@@ -24,6 +24,7 @@ classifiers =
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
     Programming Language :: Python :: Implementation :: CPython
     Programming Language :: Python :: Implementation :: PyPy
     Topic :: Software Development :: Testing

tox.ini

@@ -1,5 +1,6 @@
 [tox]
 envlist =
+    py39-dj{31,30,22}-postgres
     py38-dj{31,30,22}-postgres
     py37-dj{31,30,22}-postgres
     py36-dj{31,30,22}-postgres